{"title":"Astrographs","description":"Looking for \u003cstrong\u003eAstrograph Telescopes\u003c\/strong\u003e? We stock a range of them online and ship from Sydney to anywhere in Australia or New Zealand.","products":[{"product_id":"evostar-ed72-guidescope","title":"Skywatcher EVOSTAR ED72","description":"\u003cp\u003eSky-Watcher Evostar ED72 refractors provide the finest images obtainable in their design class. These doublet refractors deliver dramatic, coal-black skies and faithful, contrast-rich views of planetary and deep-space phenomenon that are second to none. Sky-Watcher Evostar refractors are the logical choice for the discriminating amateur astronomer looking for an investment in advanced instrumentation for exceptional viewing and astrophotography, the focus position is designed for use with a camera.\u003c\/p\u003e\n\u003cp\u003eThis telescope is designed to be used as an astrograph, it short focal length make it ideal for imaging large star fields without the need for a large astronomical mount. However, we suggest the Skywatcher 0.85x Reducer \/ Corrector to flatten the wide field for better imaging results\u003c\/p\u003e\n\u003cp\u003eIt is also a perfect scope for Autoguiding with the addition of the ZWO ASI 120Mini Guider camera\u003c\/p\u003e\n\u003cp\u003e\u003cstrong style=\"font-size: 14.4px;\"\u003eFEATURES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Doublet ED\u003c\/li\u003e\n\u003cli\u003eDiameter 72 mm\u003c\/li\u003e\n\u003cli\u003eFocal length 420 mm\u003c\/li\u003e\n\u003cli\u003eFocal ratio f \/ 5.8\u003c\/li\u003e\n\u003cli\u003eMax. Magnification 150x\u003c\/li\u003e\n\u003cli\u003eAnti-reflective treatment treatment\u003c\/li\u003e\n\u003cli\u003e50.8 \/ 31.8 dual speed focuser\u003c\/li\u003e\n\u003cli\u003eWeight 1.9 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSUPPLIED\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRings and “Vixen” style dovetail bar with camera mount\u003c\/li\u003e\n\u003cli\u003eHigh quality aluminium case for safe storage and travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note: diagonal and eyepiece are not included with this telescope.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"TSA","offers":[{"title":"Default Title","offer_id":42045235232837,"sku":"SWED72","price":525.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/CopyofUntitled_547e6354-425c-46f1-88d0-e354d050d581.jpg?v=1739940695"},{"product_id":"celestron-8-inch-f-2-rasa-schmidt-astrograph-ota","title":"Celestron 8 Inch F\/2 RASA Schmidt Astrograph OTA","description":"\u003cp\u003eCelestron 8\" F\/2 RASA - Capture spectacular wide-field deep sky images in seconds with Celestron’s portable astrograph, the 8” Rowe-Ackermann Schmidt Astrograph (RASA). This incredibly fast f\/2.0 system is the perfect companion to today’s color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, it’s easy to transport your 8” RASA to the most remote dark sky locations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRASA Performance Made for Everyone\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 8” RASA is an imaging telescope that delivers a flat field without optical aberrations for razor sharp stars across a wide field of view. It can capture stunning deep-sky astronomical images without the challenges typically presented by longer focal length instruments at a fraction of the cost of those systems.\u003c\/p\u003e\n\u003cp\u003eThe latest addition to the RASA family, this 8” version is a much more portable and affordable version of the heralded RASA 11, which was introduced to much acclaim in 2014. With the 8” RASA joining the lineup, a wider range of astroimagers can enjoy the benefits of the RASA design. It has many of the same thoughtfully designed features as its “big brother” RASA 11, including the integrated air-cooling system, internal filter mount, and sturdy CGE dovetail mounting bar.\u003c\/p\u003e\n\u003cp\u003ePurely designed for imaging, the 8” RASA cannot be used visually. The prime focus focal plane is located at the front of the optical system, so it cannot accommodate a traditional eyepiece.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShorter Exposure Times and Virtual “Real-Time” Observing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSince it is an F\/2.0 optical system, imagers can use shorter exposure times to capture detail in faint objects. When combined with sensitive cameras and the proper “live stacking” software, the 8” RASA can provide an almost real-time observing experience. View images on a computer instantly that are brighter and more detailed than can be seen in much bigger telescopes with the naked eye.\u003c\/p\u003e\n\u003cp\u003eBecause shorter exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The 8” RASA’s relatively short 400mm focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required. Weighing only 17 lb, this optical tube pairs perfectly with a wide variety of mounts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUltra-Stable Focus System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith the launch of the 8” RASA, Celestron is unveiling a focuser design that mitigates lateral movement of the primary mirror when focusing, slewing, or tracking with the astrograph. Focusing is easier, more accurate, and more stable than ever. The key to the Ultra-Stable Focus System is two sets of precision bearings that are precisely aligned and tested during assembly to ensure optimal results.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for Today’s Latest Cameras\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnlike the larger RASAs that work with DSLR and large CCD cameras, the 8” model was designed with color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras in mind. The telescope does not work with standard DSLR cameras. It is optimized for sensors with up to a 22mm diagonal, but performs well with sensors up to 32mm diagonal. The APS-C sized sensors used in many mirrorless cameras are a good choice. 42mm full frame sensors will also work, but performance will be poor at the edges of the sensor and field illumination will be reduced. Additionally, we do not recommend pairing RASA 8 with any camera body more than 4” in diameter. See the chart below to determine if your camera is compatible with RASA 8.\u003c\/p\u003e\n\u003ctable class=\"compatibility-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCamera\u003c\/th\u003e\n\u003cth\u003eCompatible with RASA 8?\u003c\/th\u003e\n\u003cth\u003eAdapter required\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstronomical CMOS\/CCD camera with C-mount\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eC-mount adapter (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstronomical CMOS\/CCD camera with M42-thread mount\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eM42 adapter (included) with M42 extension tubes (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstronomical CMOS\/CCD camera with other mount\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eCustom camera adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCanon mirrorless with APS-C sensor\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.celestron.com\/products\/camera-adapter-for-canon-mirrorless-rasa-8\" target=\"_blank\"\u003eCanon mirrorless adapter\u003c\/a\u003e\n\u003cp\u003e(sold separately)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSony mirrorless with APS-C sensor\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.celestron.com\/products\/camera-adapter-for-sony-mirrorless-rasa-8\" target=\"_blank\"\u003eSony mirrorless adapter\u003c\/a\u003e\n\u003cp\u003e(sold separately)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCanon mirrorless with full frame (42mm) sensor\u003c\/td\u003e\n\u003ctd\u003eYes, but not optimized across the full sensor\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.celestron.com\/products\/camera-adapter-for-canon-mirrorless-rasa-8\" target=\"_blank\"\u003eCanon mirrorless adapter\u003c\/a\u003e\n\u003cp\u003e(sold separately)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSony mirrorless with full frame (42mm) sensor\u003c\/td\u003e\n\u003ctd\u003eYes, but not optimized across the full sensor\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.celestron.com\/products\/camera-adapter-for-sony-mirrorless-rasa-8\" target=\"_blank\"\u003eSony mirrorless adapter\u003c\/a\u003e\n\u003cp\u003e(sold separately)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDSLR\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e--\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eUnique Optical Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRASA’s optical design is patented (US 2016\/0299331 A1). The design consists of a Schmidt corrector, primary mirror, lens group, and optical window. The lens group contains 4 elements and utilizes rare-earth elements. Unlike many telescopes that only perform well over the visible spectrum (400-700nm), the 8” RASA’s optics are designed to perform over a wider spectral range, from 390-800nm. This allows more of the light emitted from the astronomical object to be sharply focused in the image.\u003c\/p\u003e\n\u003cp\u003eWith many imaging systems, adding an extra piece of flat glass such as a filter does not change optical performance. However, that is not the case with super-fast optical systems like the RASA. Our engineers addressed this by designing the RASA with a removeable optical window, so you can maintain peak optical performance if a filter is added or if a camera has its own optical window. Celestron offers a Light Pollution Imaging Filter designed specifically for the 8” RASA, which mounts in place of the optical window.\u003c\/p\u003e\n\u003cp\u003eAll refractive optical surfaces are coated with StarBright XLT coatings, while the primary mirror uses enhanced aluminum coatings. This maintains high light transmission through the entire optical system.\u003c\/p\u003e\n\u003cp\u003eWhen compared with “Hyperstar SCT” systems, the RASA 8 provides better optical performance and field illumination.\u003c\/p\u003e\n\u003ctable class=\"table-open\" id=\"product-specs-list\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eOPTICAL TUBE INFO:\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody id=\"spec-block-1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eRowe-Ackermann Schmidt Astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e203mm (8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e400mm (15.74\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentral obstruction diameter\u003c\/td\u003e\n\u003ctd\u003e93mm (3.66\") (46% of aperture diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Gathering Power (Compared to human eye)\u003c\/td\u003e\n\u003ctd\u003e843x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (Rayleigh)\u003c\/td\u003e\n\u003ctd\u003e0.68 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (Dawes)\u003c\/td\u003e\n\u003ctd\u003e0.57 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e22mm (.86\") Ø, 3.15°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUseable field\u003c\/td\u003e\n\u003ctd\u003e32mm (1.26\") Ø, 4.6°, only minimal performance loss at edge of FOV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength range\u003c\/td\u003e\n\u003ctd\u003e390 - 800 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpot size\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 4.6 μm RMS across image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eStarBright XLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-axis Illumination\u003c\/td\u003e\n\u003ctd\u003e93% at 11mm (.43\") off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Window\u003c\/td\u003e\n\u003ctd\u003e46mm (1.81\") Ø\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focus with included camera adapter\u003c\/td\u003e\n\u003ctd\u003e25mm (.98\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focus from top of threaded collar\u003c\/td\u003e\n\u003ctd\u003e29mm (1.14\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd\u003e628mm (24.7\") length | 235mm (9.3\") diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eUltra-Stable Focusing System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinderscope\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd\u003e17 lbs (7.7 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther Features\u003c\/td\u003e\n\u003ctd\u003eAir-cooling system, integrated filter mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded items\u003c\/td\u003e\n\u003ctd\u003eM42 camera adapter, C-thread camera adapter, fan battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail\u003c\/td\u003e\n\u003ctd\u003eCGE Dovetail Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"review-content\"\u003e\n\u003cp class=\"heading h3\"\u003e\u003cstrong\u003eSKY \u0026amp; TELESCOPE’S HOT PRODUCTS 2019 AWARD\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\"Incredibly fast optical speeds allow deep-sky imaging with short exposures, opening up a new world of scientific- and recreational-astrophotography possibilities.\"\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.skyandtelescope.com\/sky-and-telescope-magazine\/inside-january-2019-issue\/\" class=\"btn hollow\"\u003eREAD FULL REVIEW\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eFrequently Asked Questions \u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why can’t the Rowe-Ackermann Schmidt Astrograph (RASA) 8 be used visually?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe optics produce an image at the front end of the telescope, not the back. Therefore, you cannot look through the RASA 8 with your eyes because your head will block the light from entering the telescope. The RASA 8 is an astrograph designed specifically for deep-sky astronomical imaging.\u003cstrong\u003eQ: Why was the RASA 8 designed to have a camera mount at the front of the telescope?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe RASA 8 optical design uses a prime focus focal plane position in order to obtain its super-fast F\/2.0 focal ratio. This necessitates the camera having to be mounted at the front of the astrograph.\u003cstrong\u003eQ: Won’t the camera block the incoming light?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe RASA 8 optical design has its own central obstruction which is caused by the sub-aperture lens assembly at the front of the telescope. The lens assembly has an outer diameter of 93mm. If a camera’s body is smaller than this, it will not block any light from reaching the camera sensor. If the camera body is larger than this, then it will block some of the incoming light. As long as the camera body does not greatly exceed about 120mm diameter, the effect on images is negligible.\u003cstrong\u003eQ: What cameras can be used with the RASA 8?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe RASA 8 can be used with many astronomical CMOS and CCD cameras. It also works well with mirrorless digital cameras. Two key considerations are the size of the camera body (should not exceed about 120mm in diameter), and the camera’s backfocus distance (cannot exceed 25mm). Color or monochrome sensors can be used, although color sensors are easiest to use since the RASA 8 cannot accommodate a filter wheel (see question #7).\u003cstrong\u003eQ: Why can’t a DSLR be used with the RASA 8?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe body size of a DSLR is too large compared to the front aperture of the RASA 8, and therefore blocks too much of the incoming light. Also, the DSLR requires too much backfocus (55mm) for the RASA 8, so the camera sensor cannot be placed at the required location relative to the astrograph. For DSLR imaging, we recommend the RASA 11.\u003cstrong\u003eQ: What about camera cables in front of the optics?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eCamera cables which cross the front of the RASA 8 do not block much light and, don’t have a significant effect on images. To minimize any potential diffraction spike around the brightest stars, camera cables can be positioned to cross the aperture in a curved pattern, rather than a straight line.\u003cstrong\u003eQ: Will I need additional camera adapters for my camera?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eIt depends on what camera you are using. For cameras with a C-mount, no additional adapters are required. For cameras which mount with a 42mm thread, a 42mm (or T-thread) spacer ring to place the camera sensor at the proper backfocus distance relative to the optics will be needed. (Note: With the included 42mm camera adapter, the backfocus distance required is 25mm. So, subtract the backfocus distance specification for your camera from 25mm, and that is the length of the M42 spacer ring you will need. If the camera has a backfocus distance of more than 25mm, it cannot be used with the RASA 8.) For Sony and Canon mirrorless cameras, Celestron offers optional camera adapters. For other cameras, a custom camera adapter will be needed.\u003cstrong\u003eQ: What is the difference between the image circle and the useable field?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe image circle is the diameter at the focal plane (i.e. where the camera sensor is positioned) which the astrograph’s performance was optimized for. The useable field is the diameter at the focal plane where the performance of the astrograph is excellent. Most astrographs only mention the useable field in their specifications.\u003cstrong\u003eQ: What if my camera’s sensor is larger than the useable field?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe RASA 8 has a useable field of 32mm. A sensor with a diagonal size larger than that, such as a full-frame mirrorless camera, can be used, but there will be some drop off in optical performance and field illumination in the corners of the image. This may require cropping during image processing.\u003cstrong\u003eQ: Can filters be used with the RASA 8?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe RASA 8 has a removeable optical window which can be replaced with a filter. Currently, Celestron offers a Light Pollution Reduction Filter for the RASA 8. Filter “sliders” offered by some manufacturers may also work with some cameras. A filter wheel cannot be used, since the filter wheel would have to mount in front of the optics and would block too much of the incoming light.\u003cstrong\u003eQ: Why does the RASA 8 have a removeable optical window?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eWith such a fast optical system, you cannot add a filter into the light path without adversely affecting the optical performance. With a removeable optical window, you can replace the window with a filter with no loss of performance.\u003cstrong\u003eQ: Why is the fast focal ratio (F\/2.0) of the RASA 8 such a big deal?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eBecause it allows much shorter exposures to be used to capture detail in fainter astronomical objects. This makes getting good images much easier and quicker. With a sensitive high-speed camera along with live image stacking software, you can see images in “real-time” on your computer screen.\u003cstrong\u003eQ: What mounts can be used with the RASA 8?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eAny mount which can accept a CGE (or Losmandy D) dovetail bar and can handle at least 20 lbs. The RASA 8 weighs 17 lbs, and you’ll also need to account for the weight of your camera and any other accessories.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will I need to collimate (i.e. align) the optics?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe optics are aligned at the factory, and should not normally need adjustment. However, there are screws which adjust the tilt of the lens assembly should collimation adjustment ever be needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is focus shift, and how does the Ultra-Stable Focus System (USFS) help to minimize it?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eFocus shift is when the image in your camera moves a little bit when focusing. This can make critical focusing more challenging. The RASA 8 focuses by moving the primary mirror inward-and-outward. If the mirror moves at all laterally, then focus shift will result. The USFS works by using pre-loaded precision ball bearings on the focus tube which the primary mirror rides on. This constrains any lateral motion of the primary mirror and minimizes focus shift. This also helps prevent any unwanted lateral motion of the primary mirror (also known as “mirror flop”) as the astrograph is pointed to different positions in the night sky.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the extended spectral range (400-800 nm) and what is the benefit?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eMost telescopes are designed to perform well over the visual spectrum (i.e 400-700nm). The RASA 8 optics were designed to perform over a wider spectral range, from 400-800nm. This means that light from 700nm-800nm will be well focused in the RASA 8, allowing more of the light emitted from the astronomical object to be sharply focused in the image. For cameras which have spectral response in the 700-800nm range, you’ll get brighter and sharper images and won’t necessarily need to use an IR-cut filter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What else might be needed with the RASA 8?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eA finderscope can be useful for visually finding objects or for initial alignment of your computerized mount with the night sky. The RASA 8 has mounting holes for a finderscope. If doing longer exposures, you may want to consider using a guide scope and autoguider in order to provide the best tracking performance with your mount. For convenient mounting of a guide scope, Celestron offers a CGE dovetail accessory mounting bar which connects to the top of the RASA 8 and allows easy installation of guide scope rings. Perhaps the most useful accessory is a focus motor, this permits focusing from the computer which is controlling the camera and\/or mount. A focus motor which is compatible with the RASA 8 will soon be introduced by Celestron.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the purpose of the integrated air-cooling system?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe RASA 8 will perform the best when its optics have reached thermal equilibrium with the outside air. The cooling system uses a fan and vents to pull air through the astrograph and around the primary mirror in order to help the RASA 8 reach thermal equilibrium more quickly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between RASA 8 and an 8” SCT or EdgeHD using the Starizona Hyperstar accessory?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eThe RASA 8 provides better optical performance and better field illumination than an 8\" SCT or Edge HD with a Hyperstar accessory. The Hyperstar accessory provides great flexibility for an SCT or EdgeHD optical system, as it allows the telescope to be used at two different focal lengths. When imaging at F\/2.0 however, it cannot provide the performance of the RASA 8.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What about dew?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eJust like any telescope design which uses a lens at the front of the telescope, the RASA 8 Schmidt corrector lens can be susceptible to dew under certain environmental conditions. To prevent dew when the outside temperature drops below the dew point, we recommend using a dew shield or dew heater.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":42045237461061,"sku":"91073","price":3999.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/91073_8in_Rowe-Ackermann_Schmidt_Astrograph_01_570x380_2x_a086f5e3-5339-489f-8594-17147aeff135.webp?v=1739937640"},{"product_id":"celestron-rasa-36-ota","title":"Celestron RASA 36 Telescope","description":"\u003cp\u003eThe Rowe-Ackermann Schmidt Astrograph (Celestron RASA 36), is a cost-effective optical system for space surveillance, Space Situational Awareness (SSA), other scientific applications, and advanced wide field astroimaging. It offers unprecedented value in aperture, speed, field of view, and optical performance. The RASA design has a convenient external prime-focus image capture location with a flat focal plane, providing small spot sizes to the edge of a wide field. The result is images free of optical defects like field curvature, off-axis coma, and astigmatism.\u003c\/p\u003e\n\u003cp\u003eThe 36 cm aperture version is the largest RASA Celestron manufactures; it is the biggest and fastest (f\/2.2) optical instrument of its kind available off-the-shelf. Unlike most telescopes, which only focus visible light (400-700 nm), the RASA 36 cm focuses an extended spectral range (400-900 nm), allowing a brighter signal to be detected by a camera sensor. The RASA 36 cm also features a redesigned focus system, which ensures easy and stable focusing.\u003c\/p\u003e\n\u003cp\u003eRASA 36 c sample back-focus distance (77.5 mm) accommodates a wide variety of imaging sensors. A custom camera adapter can be added for a field of view up to 4.4 degrees.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant freight requirement  \u003c\/strong\u003eRASA 36 is a professional-caliber, high-precision instrument. It is manufactured and aligned to an exacting standard to provide exceptional optical performance. The telescope has been packaged to ensure it retains alignment and resulting performance during transport. However, due to the weight, size, and known stresses of shipping via parcel service, Celestron has determined that the ideal transport is a palletized delivery via LTL truck freight. For all Australian deliveries, Celestron will ship via this method.  Please contact us for further freight costs\u003c\/p\u003e\n\u003ctable id=\"product-specs-list\" class=\"table-open\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eOPTICAL TUBE INFO:\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody id=\"spec-block-1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eRowe-Ackermann Schmidt Astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e355.6mm (14\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e790mm (31.1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/2.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentral obstruction diameter\u003c\/td\u003e\n\u003ctd\u003e158mm (6.22\")(44% of aperture diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Gathering Power (Compared to human eye)\u003c\/td\u003e\n\u003ctd\u003e2581X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (Rayleigh)\u003c\/td\u003e\n\u003ctd\u003e0.39 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (Dawes)\u003c\/td\u003e\n\u003ctd\u003e0.36 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage circle\u003c\/td\u003e\n\u003ctd\u003e60.1mm (2.36\") Ø, 4.4°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUseable field\u003c\/td\u003e\n\u003ctd\u003e70mm (2.75\") Ø, 5.1°, only minimal performance loss at edge of FOV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength range\u003c\/td\u003e\n\u003ctd\u003e400 – 900 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpot size\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 6.3 μm RMS across FOV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical coatings\u003c\/td\u003e\n\u003ctd\u003eEnhanced aluminum, XLT multi-coatings used throughout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-axis Illumination\u003c\/td\u003e\n\u003ctd\u003e83% at 30mm (1.18\") off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical window\u003c\/td\u003e\n\u003ctd\u003e104mm (4.09\") Ø\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focus with included camera adapter\u003c\/td\u003e\n\u003ctd\u003e55mm (2.16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focus from top of threaded collar\u003c\/td\u003e\n\u003ctd\u003e77.5mm (3.05\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd\u003e1079.5mm (42.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Diameter\u003c\/td\u003e\n\u003ctd\u003e406.4mm (16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eNew focuser design, minimizes focus shift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinderscope\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd\u003e75 lbs (34.02 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther features\u003c\/td\u003e\n\u003ctd\u003eVentilation fan, dual dovetail mounting bars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded items\u003c\/td\u003e\n\u003ctd\u003e48mm (1.89\") camera adapter, fan battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":42045237985349,"sku":"91077","price":31499.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Untitleddesign_be1ca8b4-b310-4fbe-9dc1-584324764cc1.jpg?v=1739937890"},{"product_id":"planewave-20-cdk-fused-silica-glass","title":"PlaneWave CDK 20 f\/6.8 OTA","description":"\u003ch2\u003eCDK20’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Moderate Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eThe CDK20 f\/6.8 features a significant 508 mm aperture and an f\/6.8 focal ratio. This combination provides excellent light-gathering capabilities and a wide field of view, enhancing its ability to capture detailed images of deep-sky objects for astrophotography and research purposes.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Optical Design\u003c\/h3\u003e\n\u003cp\u003eEquipped with a state-of-the-art Corrected Dall-Kirkham optical system, the CDK20 offers unmatched image clarity. It eliminates off-axis coma and astigmatism and provides a perfectly flat field, ensuring images are crisp and detailed across the entire field of view, requiring minimal post-processing.\u003c\/p\u003e\n\u003ch3\u003eRobust Mechanical Structure\u003c\/h3\u003e\n\u003cp\u003eBuilt with a carbon fiber optical tube, the CDK20 is both durable and lightweight. Its design minimizes thermal expansion, ensuring minimal focus shift with temperature changes, which is ideal for extended observing sessions under diverse environmental conditions.\u003c\/p\u003e\n\u003ch3\u003eHigh-Performance Mirrors and Coatings\u003c\/h3\u003e\n\u003cp\u003eUtilizing fused silica mirrors, the CDK20 maintains precise optical alignment and exceptional surface accuracy, even during temperature fluctuations. The high-quality coatings improve light transmission and reduce stray light, optimizing the telescope's performance for specialized observational tasks.\u003c\/p\u003e\n\u003ch3\u003eThermal Management\u003c\/h3\u003e\n\u003cp\u003eThe CDK20 has cooling fans and a Delta-T ready system to achieve thermal equilibrium swiftly. These features help reduce air turbulence within the tube, thus minimizing image distortion and maintaining consistent imaging quality.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Dew Control\u003c\/h3\u003e\n\u003cp\u003eThe telescope includes advanced dew prevention technology with heater pads controlled by PlaneWave’s software. This ensures optical surfaces remain free from condensation in humid conditions, thus maintaining clear and consistent imaging performance.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eWith its large image circle and exceptional field flatness, the CDK20 allows astrophotographers to capture expansive and breathtaking views of the cosmos with incredible detail and clarity.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eThe stable and precise imaging capabilities of the CDK20 make it an invaluable asset for academic institutions and observatories engaged in sophisticated astronomical research, including deep-sky surveys and detailed photometric studies.\u003c\/p\u003e\n\u003ch3\u003eVisual Observations\u003c\/h3\u003e\n\u003cp\u003eThe CDK20 excels in visual observation, providing bright and clear views ideal for star parties and serious visual astronomy. Its large aperture and superior optical quality deliver stunning views of planetary, lunar, and deep-sky objects, making every viewing session a memorable experience. Here's the updated article adapted for the CDK17 based on the features and specifications from the provided product page:\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eThe CDK20 also lends itself to Space Situational Awareness and Space Domain Awareness applications. Its capability to provide detailed observations can be essential for tracking and monitoring satellites and other space debris, contributing valuable data for space traffic management and safety initiatives.\u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable width=\"521\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"237\"\u003e \u003ccol width=\"284\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"237\" height=\"21\"\u003eAperture \u003c\/td\u003e\n\u003ctd width=\"284\"\u003e508mm (20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e3454mm (136\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e39% of the Primary Mirror Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus From Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e224 mm (8.81\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight \u003c\/td\u003e\n\u003ctd\u003e140 lbs (63.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e1194 mm (47\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design Performance\u003c\/td\u003e\n\u003ctd\u003e1.5-micron RMS on-axis, 3.8-micron RMS at 12 mm off-axis, 6.0-micron at 21 mm off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss and light shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle Size\u003c\/td\u003e\n\u003ctd\u003e52mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable width=\"238\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"93\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"93\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e191 mm (7.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminum - 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eLens Group\u003c\/h3\u003e\n\u003ctable width=\"266\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"121\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e90mm (3.54\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eBroadband AR Coatings (less than .5% reflected from 400 to 700 nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable width=\"266\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"121\" height=\"21\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e508 mm (20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e521 mm (20.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial \u003c\/td\u003e\n\u003ctd\u003eFused Silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminum - 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Items\u003c\/td\u003e\n\u003ctd\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eFlashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42045239099461,"sku":"200104Q","price":68999.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveIRDK20.jpg?v=1739491445"},{"product_id":"planewave-cdk-14-inch-fused-silica-2","title":"PlaneWave CDK 14 Inch Fused Silica","description":"\u003ch5\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003ePlaneWave CDK 14\" Fused Silica\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003eThe CDK (Corrected Dall-Kirkham) Optical Design is an innovative solution for unsurpassed astroimaging quality at an affordable price. The CDK telescope design provides excellent imaging with large format CCD cameras while remaining superb for visual use. The CDK design far exceeds the off-axis performance of most commercial telescope designs including the Ritchey-Chrétien design.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eFUSED SILICA\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eFused Silica is a synthetic amorphous silica glass of the highest purity and one of the most transparent glasses made.\u003c\/p\u003e\n\u003cp\u003eThe optical and thermal properties of fused silica are superior to other types of glass due to its purity. Its transmission and homogeneity exceed those of crystalline quartz without the problems of temperature instability inherent in the crystalline form.\u003c\/p\u003e\n\u003cp\u003eFused Silica has a coefficient of thermal six times lower than Borosilicate glass, which means that as fused silica cools down, it preserves its shape to a high degree of accuracy. This translates into consistent optical performance and unchanging focus over temperature changes.\u003c\/p\u003e\n\u003cp\u003eWith high melting temperature (~1,600 degrees Celsius), a very low coefficient of thermal expansion and resistance to thermal shock, fused silica is the material of choice for professional observatories as well as various scientific applications.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003eThis no-compromise design is unique in making the optical alignment forgiving and collimation very easy. This guarantees the user the best possible performance from the telescope. The end result at the image plane of the CDK design is no off-axis coma, no off-axis astigmatism, perfectly flat field (no off-axis defocus). The CDK design will give you pinpoint stars from the center to the corner of the field of view.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003e\u003ca style=\"color: #0000ff;\" href=\"\/wp-content\/uploads\/2019\/10\/PW-Optical-Design.pdf\"\u003eMore about our Optical Design\u003c\/a\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/h6\u003e\n\u003ctable width=\"996\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"216\"\u003e \n\u003cp\u003e\u003cstrong\u003eCarbon Fiber Truss Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"465\"\u003eOpen truss tube design with carbon fiber frame minimizes thermal expansion which causes focus shift with changes in temperature. Carbon fiber truss design also promotes quick thermal cooling and provides a rigid, lightweight structure.\u003c\/td\u003e\n\u003ctd width=\"315\"\u003e\u003cimg class=\"alignright size-full wp-image-59778\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PW-CF-truss.jpg\" alt=\"\" width=\"720\" height=\"316\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"216\"\u003e\u003cstrong\u003e3D Printed Baffles\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"465\"\u003ePlanewave uses digital 3D printing technology to produce lightweight baffle tubes. 3D printers add successive layers of material to construct a baffle system with precision positioned internal stray light baffles to minimize vignetting and maximize image contrast.\u003c\/td\u003e\n\u003ctd width=\"315\"\u003e\u003cimg class=\"alignright size-full wp-image-59776\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PW-CDK14-baffle.jpg\" alt=\"\" width=\"295\" height=\"200\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"216\"\u003e\u003cstrong\u003eDovetail Expansion Joint\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"465\"\u003eAllows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminium dovetail expand and contract without stressing the carbon fiber lower truss.\u003c\/td\u003e\n\u003ctd width=\"315\"\u003e\u003cimg class=\"alignright size-full wp-image-59780\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PW-Expansion.jpg\" alt=\"\" width=\"295\" height=\"200\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"216\"\u003e\u003cstrong\u003eCooling Fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"465\"\u003eThree cooling fans blow air inside the back of the telescope. Internal diverting fins circulate air flow behind the mirror for even cooling to help the telescope reach thermal equilibrium quickly. The fans are controlled with PWI PC software with the optional Electronic Focus Accessory (EFA Kit).\u003c\/td\u003e\n\u003ctd width=\"315\"\u003e\u003cimg class=\"alignright size-full wp-image-59777\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PW-CDK14-Fans.jpg\" alt=\"\" width=\"295\" height=\"200\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"216\"\u003e\u003cstrong\u003eDelta-T Ready\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"465\"\u003eFor added dew prevention, the CDK14 is internally wired with polyimide film heater pads and temperature sensor, ready to be controlled with the optional \u003ca href=\"http:\/\/planewave.com\/products-page\/general-accessories\/delta-t-heater\/\"\u003eDelta-T controller\u003c\/a\u003e.\u003c\/td\u003e\n\u003ctd width=\"315\"\u003e\u003cimg class=\"alignright size-full wp-image-59779\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PW-heat-pad.jpg\" alt=\"\" width=\"295\" height=\"200\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch6\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 20.8px;\"\u003ePlaneWave \u003c\/span\u003e\u003cspan style=\"color: #000000;\"\u003eCDK 14\" Fused Silica \u003c\/span\u003e\u003cspan style=\"font-size: 20.8px;\"\u003eSpecifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003e\u003cstrong\u003eOPTICAL SYSTEM\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eCorrected Dall-Kirkham (CDK)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e14 inch (356mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2563mm (101 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003eF\/7.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e23.5% by surface area; 48.5% by diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eBack Focus from Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e11.09 inch (282 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e48 lbs (22 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e35 inch (889 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptical Performance\u003c\/td\u003e\n\u003ctd\u003e3.1 micron RMS at 13mm off-axis; 6.0 micron RMS at 35mm off-axis - \u003ca href=\"http:\/\/planewave.com\/wp-content\/uploads\/2013\/07\/CDK14-spot-diagram.jpg\"\u003eSpot Diagram\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss and Light Shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptimal Field of View\u003c\/td\u003e\n\u003ctd\u003e70mm Image Circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eSECONDARY MIRROR\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e165 mm (6.5 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePrecision Annealed Borosilicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminum - 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003ePRIMARY MIRROR\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd\u003e14 inches (355.6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e14.5 inches (468.3mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused Silica\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminum - 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eLENS GROUP\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e95mm (3.7 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eNumber of lenses\u003c\/td\u003e\n\u003ctd\u003eTwo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003ebroadband AR Coatings (less than .5% reflected from 400 to 700nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eSTANDARD FEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellspacing=\"3\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eCDK Optics\u003c\/td\u003e\n\u003ctd width=\"713\"\u003eThe Corrected Dall-Kirkham design yields a perfectly flat field free from off-axis astigmatism, coma and defocus.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eCarbon Fiber Truss Design\u003c\/td\u003e\n\u003ctd width=\"713\"\u003eMinimizes thermal expansion which causes focus shift with changes in temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eDovetail Expansion Joint\u003c\/td\u003e\n\u003ctd width=\"713\"\u003eAllows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminum dovetail expand and contract without stressing the carbon fiber lower truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eCooling Fans\u003c\/td\u003e\n\u003ctd width=\"713\"\u003eThree cooling fans blow air inside the back of the telescope. This helps the telescope to reach thermal equilibrium quickly. The fans are controlled by a computer if the optional Electronic Focus Accessory (EFA Kit) is purchased.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eDelta-T Ready\u003c\/td\u003e\n\u003ctd width=\"713\"\u003eFor added dew prevention, the CDK14 is internally wired with polyimide film heater pads and temperature sensor, ready to be controlled with the optional Delta-T controller.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eSHIPPING\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellspacing=\"3\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eCrated Shipping Weight\u003c\/td\u003e\n\u003ctd width=\"713\"\u003e 225 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eCrate Width\u003c\/td\u003e\n\u003ctd width=\"713\"\u003e 31 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eCrate Height\u003c\/td\u003e\n\u003ctd width=\"713\"\u003e 26 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"227\"\u003eCrate Length\u003c\/td\u003e\n\u003ctd width=\"713\"\u003e 53 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This product has a lengthy lead time. Please contact \u003cspan style=\"color: #0000ff;\"\u003e\u003ca style=\"color: #0000ff;\" href=\"mailto:education@bintel.com.au\"\u003eeducation@bintel.com.au\u003c\/a\u003e\u003c\/span\u003e for further information.\u003c\/p\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42045239361605,"sku":"140101Q","price":33599.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/IRDK14.jpg?v=1739424162"},{"product_id":"celestron-rowe-ackermann-schmidt-astrograph-rasa-11-v2","title":"Celestron RASA 11 Rowe-Ackermann Schmidt Astrograph Telescope OTA","description":"\u003cp\u003eCapturing impressive deep-sky astroimages is easier than ever with Celestron’s Rowe-Ackermann Schmidt Astrograph (RASA 11) V2, the perfect companion to today’s top DSLR or astronomical CCD cameras. This fast, wide-field f\/2.2 system allows for shorter exposure times compared to traditional f\/10 astroimaging, without sacrificing resolution. Because shorter sub-exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The short focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required.\u003c\/p\u003e\n\u003cp\u003eRASA 11 V2 builds on the legacy of Celestron’s Schmidt Cameras, which allowed astrophotographers to produce images with much shorter exposure times on film in the 1970s.\u003c\/p\u003e\n\u003cp\u003eToday, with CCD sensor sizes as large as film or larger, the RASA 11 V2 offers a 43.3mm optimized image circle to capture pinpoint stars on the largest imaging chips. Optical performance for huge sensors with diagonals of up to 52mm wide is still excellent.\u003c\/p\u003e\n\u003cp\u003eCombine this large image circle with a focal length of just 620mm and you have an instrument suitable for wide-field imaging, creating huge mosaics of the night sky, surveying, and even comet hunting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptical Performance\u003c\/strong\u003e\u003cstrong\u003e\u003cbr\u003e\n\u003c\/strong\u003eThe RASA 11 V2 features optics with 4-element rare-earth glass for images free of false color and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle are unprecedented for an astrograph in this price range—or even that of a much more expensive instrument. The design also provides minimal vignetting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced Features\u003c\/strong\u003e\u003cstrong\u003e\u003cbr\u003e\n\u003c\/strong\u003eRASA 11 V2 utilizes the Ultra-Stable Focus System (USFS). At the heart of this system is a precision linear ball bearing. The bearing serves to minimize focus shift (unwanted lateral motion of the primary mirror during focusing which causes shifting of the image) and mirror flop (movement of the primary mirror when the telescope is pointing to different positions in the sky). The USFS is also compatible with the optional Celestron Focus Motor (#94155-A). The integrated 12V DC MagLev fan reduces cooldown time and provides optimal airflow through the dust filtered optical tube.\u003c\/p\u003e\n\u003cp\u003eEngineered as a complete astroimaging system, every component of the RASA 11 V2 is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully-multicoated optical window or optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly. The Dovetail CGE bars on the top of the optical tube provides a connection for use of optional accessories like a guidescope.\u003c\/p\u003e\n\u003ctable id=\"product-specs-list\" class=\"table-open\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eOPTICAL TUBE INFO:\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody id=\"spec-block-1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eRowe-Ackermann Schmidt Astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e279mm (11\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e620mm (24.4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/2.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentral obstruction diameter\u003c\/td\u003e\n\u003ctd\u003e114mm (4.48\") (41% of aperture diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Gathering Power (Compared to human eye)\u003c\/td\u003e\n\u003ctd\u003e1588x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (Rayleigh)\u003c\/td\u003e\n\u003ctd\u003e0.49 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (Dawes)\u003c\/td\u003e\n\u003ctd\u003e0.41 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e43.3mm (1.7\") Ø , 4.0°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUseable field\u003c\/td\u003e\n\u003ctd\u003e52mm (2.04\") Ø , 4.8° only minimal performance loss at edge of FOV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength range\u003c\/td\u003e\n\u003ctd\u003e400 - 700 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpot size\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 4.4 μm RMS across FOV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eStarBright XLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-axis Illumination\u003c\/td\u003e\n\u003ctd\u003e83% at 21mm (.82\") off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Window\u003c\/td\u003e\n\u003ctd\u003e68mm (2.67\") Ø\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focus with included camera adapter\u003c\/td\u003e\n\u003ctd\u003e55mm (2.16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focus from top of threaded collar\u003c\/td\u003e\n\u003ctd\u003e72.8mm (2.86\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd\u003e838.2mm (33\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Diameter\u003c\/td\u003e\n\u003ctd\u003e330.2mm (13\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eUltra-Stable Focus System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinderscope\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd\u003e43 lbs (19.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther Features\u003c\/td\u003e\n\u003ctd\u003eVentilation fan, dual dovetail mounting bars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded items\u003c\/td\u003e\n\u003ctd\u003e42mm (1.65\") T-thread camera adapter | 48mm (1.89\") camera adapter | Dust cover | Fan battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail\u003c\/td\u003e\n\u003ctd\u003eCGE Dovetail Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":42045244244037,"sku":"91076","price":7749.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Untitleddesign_2_f0b1cda4-8c5b-4cad-bbae-6c9cb6718bf7.jpg?v=1739937763"},{"product_id":"planewave-cdk-12-5-fused-silica","title":"Planewave  CDK 12.5 Fused Silica","description":"\u003cp\u003ePlaneWave CDK 12.5 Fused Silica\u003c\/p\u003e\n\u003cp\u003eCapturing the most stunning astrophotographs possible is something our team is passionate about. From design to manufacture, our goal with the Corrected Dall-Kirkham (CDK) 12.5″ telescope was centered around performance and ease of use. The PlaneWave CDK 12.5 Fused Silica is an incredible breakthrough in telescope technology and produces no off-axis coma and no off-axis astigmatism. Additionally, the PlaneWave CDK 12.5 Fused Silica provides a perfectly flat field so your astrophotographs will have stunning clarity from corner to corner of the image without field curvature degrading the photos. Offering the simplicity of single-mirror collimation, the stray light control of advanced baffles, structural performance created through finite element analysis (FEA), and decades of telescope design experience, the CDK12.5 is an exceptional diffraction-limited telescope. CDK12.5 users can experience pinpoint stars edge-to-edge and a 70 x 70 arcminute field of view when using large camera sensors. When equipment fades into the background and simply performs, the astrophotography experience becomes even more fun and rewarding!\u003c\/p\u003e\n\u003cp\u003eThe PlaneWave CDK 12.5 Fused Silica is a 12.5 inch (0.32 m) f\/8 Corrected Dall-Kirkham Astrograph telescope. The telescope has a closed carbon fiber tube, with 3 cooling fans ejecting air from the back of the telescope. The PlaneWave CDK 12.5 covers a 52 mm field of view without any field curvature, off-axis coma, or astigmatism. The instrument weight is 21kg and comes standard with the large capacity 2.75 inch Hedrick focuser.\u003c\/p\u003e\n\u003ctable width=\"777\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003eCarbon Fiber Tube Design\u003c\/td\u003e\n\u003ctd width=\"509\"\u003eMinimizes thermal expansion which causes focus shift with changes in temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003eDovetail expansion joint\u003c\/td\u003e\n\u003ctd width=\"509\"\u003eAllows for the difference in thermal expansion between carbon fiber and aluminium. The expansion joint allows the aluminium dovetail expand and contract without stressing the carbon fiber lower truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e2.75 inch Hedrick Focuser\u003c\/td\u003e\n\u003ctd width=\"509\"\u003eHeavy duty no-slip focuser. The focus tube runs on 5 bearings and is driven by a leadscrew so there is no chance of slipping. Focus may be automated through a computer using PlaneWave's EFA Kit add-on. The draw tube travel is 1.3 inch. \u003ca href=\"http:\/\/planewave.com\/wp-content\/uploads\/2013\/04\/hedrick-focuser-diagram-1.jpg\"\u003eImage 1\u003c\/a\u003e \u003ca href=\"http:\/\/planewave.com\/wp-content\/uploads\/2013\/04\/hedrick-focuser-diagram-2.jpg\"\u003eImage 2\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003eCooling Fans\u003c\/td\u003e\n\u003ctd width=\"509\"\u003eThree fans blow out of the optical tube pulling air though the telescope and by the primary mirror. This helps the telescope to reach thermal equilibrium quickly. The fans are controlled by a switch on the optical tube or can be controlled by a computer if the optional Electronic Focus Accessory (EFA Kit) is purchased.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eTechnology\u003cimg height=\"185\" width=\"420\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/CDK-Design.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe CDK Optical Design\u003c\/p\u003e\n\u003cp\u003eThe CDK \u003ccorrected dall-kirkham=\"\"\u003e telescope\u003c\/corrected\u003e is based on a new optical design developed by Dave Rowe. The goal of the design is to make an affordable astrographic telescope with a large enough imaging plane to take advantage of the large format CCD cameras of today. Most telescope images degrade as you move off-axis from either coma, off-axis astigmatism, or field curvature. The CDK design suffers from none of these problems. The CDK is coma free, has no off-axis astigmatism, and has a flat field. The design is a simple and elegant solution to the problems posed above. The CDK consists of three components: an ellipsoidal primary mirror, a spherical secondary mirror and a lens group. All these components are optimized to work in concert in order to create superb pinpoint stars across the entire 52mm image plane.\u003c\/p\u003e\n\u003cp\u003eOptical Performance\u003cimg height=\"517\" width=\"410\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Planewave-Spot-Diagram.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eShown are two simulations showing the CDK’s stunning performance. The first is a diffraction simulation and the second is a spot diagram. In both simulations the small squares are 9×9 microns, about the size of a CCD pixel. In the diffraction simulation the star images on axis and off-axis are nearly identical. In the spot diagram 21mm off-axis the spot size is an incredible 6 microns RMS diameter. This means stars across a 52 mm image circle are going to be pinpoints as small as the atmospheric seeing will allow.\u003c\/p\u003e\n\u003cp\u003eBoth of the simulations take into consideration a flat field, which is a more accurate representation of how the optics would perform on a flat CCD camera chip. For visual use some amount of field curvature would be allowed since the eye is able to compensate for a curved field. The diffraction simulation was calculated at 585nm. The spot diagram was calculated at 720, 585, and 430nm. Many companies show spot diagrams in only one wavelength, but you cannot see the chromatic performance with only one wavelength.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eComparison: CDK vs. Ritchey Chrétien\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"517\" width=\"410\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlaneWave-CDK-VS-RC.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe simulations shown compares the optical performance of the CDK design to the Ritchey Chrétien (RC) design. The Ritchey design was popularized as an astroimaging telescope due to its use in many professional\u003c\/p\u003e\n\u003cp\u003eobservatories. Although very difficult and expensive to manufacture and align, the Ritchey is successful in eliminating many of the problems that plague many other designs, namely off-axis coma. However the Ritchey does nothing to eliminate the damaging effects of off-axis astigmatism and field curvature.\u003c\/p\u003e\n\u003cp\u003eThe CDK design tackles the off-axis coma problem by integrating a pair of correcting lenses into a two mirror design. The beauty is that this design also corrects for astigmatism and field curvature. Because the lenses are relatively close to the focal plane (unlike the Schmidt corrector plate found in various Schmidt Cassegrain designs), and because these lenses work together as a doublet, there is no chromatic aberration. The CDK offers a wide aberration-free, flat field of view that allows the user to take full advantage of the very large imaging chip cameras in the market place today.\u003c\/p\u003e\n\u003cp\u003eHaving an aberration free telescope design means nothing if the optics cannot be aligned properly. Many Ritchey owners never get to take full advantage of their instrument’s performance because the Ritchey is very difficult to collimate. Aligning the hyperbolic secondary mirror’s optical axis to the optical axis of the primary mirror is critical in the Ritchey design, and the tolerances are unforgiving. The secondary mirror of the CDK design is spherical. It has no optical axis and so the centering tolerance of the CDK secondary mirror is comparatively huge. With the help of some very simple tools, the CDK user will be able to set the secondary spacing, collimate the optics and begin enjoying the full performance potential the instrument has to offer within a few minutes.\u003c\/p\u003e\n\u003cp\u003eThe drastic difference in performance between the CDK and the RC is apparent. The biggest component that degrades the off-axis performance of the RC is the defocus due to field curvature. In many diagrams shown by RC manufacturers, the diagrams look better than this because they are showing a curved field. This is fine for visual use because the eye can compensate for some amount of curvature of field. But CCD arrays are flat and so in order to evaluate the performance a spot diagrams and\/or diffraction simulations requires a flat field as shown.\u003c\/p\u003e\n\u003ch5\u003ePlaneWave CDK 12.5 Specifications\u003c\/h5\u003e\n\u003ch6\u003eOPTICAL SYSTEM\u003c\/h6\u003e\n\u003ctable cellpadding=\"1\" width=\"824\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e318mm (12.5 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2541 mm (100.04 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e42% of the Primary Mirror Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eBack Focus from Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e265mm (10.445 inch )\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eBack Focus from Racked in Focuser\u003c\/td\u003e\n\u003ctd\u003e183mm (7.2 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e787mm (31 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptical Tube\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/wp-content\/uploads\/2021\/08\/125101DIM-A.pdf\"\u003eOverall Dimensions (PDF)\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eWeight (includes manual-focuser and dovetail)\u003c\/td\u003e\n\u003ctd\u003e20.9 kg (46 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eWeight (includes electronic-focuser and dovetail)\u003c\/td\u003e\n\u003ctd\u003e22.0 kg (48.5 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch6\u003eSECONDARY MIRROR\u003c\/h6\u003e\n\u003ctable cellpadding=\"1\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e118 mm (4.65 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePrecision Annealed Fused Silica\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminium - 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch6\u003ePRIMARY MIRROR\u003c\/h6\u003e\n\u003ctable cellpadding=\"1\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd\u003e318 mm (12.5 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e330 mm (13 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePrecision Annealed Fused Silica\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminium - 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch6\u003eLENS GROUP\u003c\/h6\u003e\n\u003ctable cellpadding=\"1\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e70 mm (2.76 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eNumber of lenses\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eBroadband AR Coatings (less than .5% reflected from 400 to 700nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSHIPPING\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrated Shipping Weight\u003c\/td\u003e\n\u003ctd\u003e73.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrate Width\u003c\/td\u003e\n\u003ctd\u003e559 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrate Height\u003c\/td\u003e\n\u003ctd\u003e737 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrate Length\u003c\/td\u003e\n\u003ctd\u003e1,219 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eINCLUDED ACCESSORIES\u003c\/p\u003e\n\u003ctable cellpadding=\"1\" width=\"807\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eMotorized 2.75″ Hedrick Focuser\u003c\/td\u003e\n\u003ctd\u003eOffers 1.3″ of focusMotorized 2.75″ Hedrick Focuser Offers 1.3″ of focuser travel and takes up 3″ of backfocus. Requires the 125901 EFA kit sold separately.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eHeating elements for dew prevention\u003c\/td\u003e\n\u003ctd\u003eThe heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOTA Cover\u003c\/td\u003e\n\u003ctd\u003eTo protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eFlashdrive\u003c\/td\u003e\n\u003ctd\u003eContains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCable connector for fan power\u003c\/td\u003e\n\u003ctd\u003eProvides a connection method for powering for the fans if the user does not have the 125901 EFA kit. User must provide 12VDC power supply 2.1 barrel jack connector that is center positive.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003ca href=\"\/wp-content\/uploads\/2019\/10\/PlaneWave-12.5-CDK.jpg\"\u003eCollimation and Spacing Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42045251158085,"sku":"125104Q","price":25999.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveIRDK12.5.jpg?v=1739484584"},{"product_id":"planewave-17-optimised-dall-kirkham-2","title":"Planewave IRDK 17 OTA","description":"\u003ch2\u003eIRDK17’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Optimized Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eThe IRDK17 features a considerable 432 mm aperture and an f\/6.8 focal ratio, enhancing its ability to capture infrared light effectively. This configuration is ideal for precise infrared observations and long-exposure imaging, offering superior light-gathering capabilities.\u003c\/p\u003e\n\u003ch3\u003eSpecialized Optical Design for Infrared\u003c\/h3\u003e\n\u003cp\u003eThe Dall-Kirkham optical design of the IRDK17 is finely tuned for infrared wavelengths. There are no refractive lenses, only reflective components made from fused silica. The reflective coatings are a protected gold with better than 98% reflectivity from .65 microns (650nm) to 5 microns (5000nm), making it optimal for infrared astronomy or LIDAR applications. UV-optimized coatings can also be provided, enhancing the telescope's versatility—please contact our technical sales team to discuss UV optimization.\u003c\/p\u003e\n\u003ch3\u003eRobust Mechanical Structure\u003c\/h3\u003e\n\u003cp\u003eConstructed using carbon fiber, the optical tube of the IRDK17 ensures durability and stability with minimal thermal expansion. This feature guarantees consistent performance across various conditions and is suitable for intensive scientific and research applications.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Thermal Management\u003c\/h3\u003e\n\u003cp\u003eThe IRDK17 has cooling fans and a system ready for Delta-T applications, promoting rapid thermal equilibrium. This system is essential for minimizing air turbulence within the tube, reducing potential image distortion, and improving overall imaging quality.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Dew Control\u003c\/h3\u003e\n\u003cp\u003eGiven that infrared observations are prone to condensation, the IRDK17 incorporates advanced dew-prevention technology. Heater pads, controlled via PlaneWave’s software, ensure the optical surfaces remain clear from dew, maintaining consistent and sharp imaging performance.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eInfrared Astronomy\u003c\/h3\u003e\n\u003cp\u003eThe IRDK17 excels in infrared astronomy, where its large aperture and infrared-optimized optics allow for detailed observation of celestial objects in infrared light. This capability is vital for uncovering astrophysical phenomena invisible to the naked eye or conventional optical wavelengths.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Research and LIDAR Applications\u003c\/h3\u003e\n\u003cp\u003eWith its specialized design and infrared optimization, the IRDK17 is a robust platform for advanced scientific research, including applications in LIDAR, leveraging its specialized optical capabilities.\u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"521\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"237\"\u003e \u003ccol width=\"284\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"237\"\u003eAperture \u003c\/td\u003e\n\u003ctd width=\"284\"\u003e432mm (17 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2939\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6,8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e23.7% by surface area; 48.6% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus From Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e262.33mm (10.32 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus From Racked In Focuser\u003c\/td\u003e\n\u003ctd\u003e184mm (7.24 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight \u003c\/td\u003e\n\u003ctd\u003e48kg (106 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e1067mm (42 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss and light shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"238\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"93\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"93\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e165mm (6.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused Silica (Quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"266\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"121\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e432 mm (17 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e445 mm (17.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial \u003c\/td\u003e\n\u003ctd\u003eFused Silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Items\u003c\/td\u003e\n\u003ctd\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eFlashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42045252632645,"sku":"170120Q","price":54699.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/CopyofUntitled_9fbe63b9-6202-41ba-a636-38505c24e9fd.jpg?v=1739943295"},{"product_id":"planewave-cdk-400_114259","title":"Planewave CDK 400 Observatory System","description":"\u003cp\u003e\u003cspan\u003eThe CDK400 Observatory System from PlaneWave Instruments is designed for the sophisticated astrophotographer and dedicated astronomy researcher. This premium package combines the high-performing CDK17 optical tube with the advanced L-500 direct-drive mount to provide a superior observational platform that excels in a range of applications, from detailed celestial research to high-end astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features of the CDK400 Observatory System\u003c\/h2\u003e\n\u003ch3\u003eCDK17 Optical Tube Assembly\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture and Focal Length\u003c\/strong\u003e: Features a 17-inch aperture and a 2939 mm focal length at an f\/6.8 focal ratio, optimizing it for deep-sky imaging with excellent depth and clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Optical Design\u003c\/strong\u003e: Utilizes a Corrected Dall-Kirkham optical design, delivering a field free of off-axis coma and astigmatism and achieving a perfectly flat field across a 70 mm image circle, resulting in critically sharp images across the entire viewing area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction\u003c\/strong\u003e: Made with lightweight yet robust carbon fiber, reducing thermal expansion and allowing for rapid thermal equilibration, which helps maintain precise optical alignment under fluctuating temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Mirrors and Coatings\u003c\/strong\u003e: Equipped with high-stability fused silica mirrors known for minimal thermal expansion, paired with high-performance coatings that maximize light throughput while minimizing stray light for optimal imaging quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management\u003c\/strong\u003e: Features an advanced cooling system with strategically placed fans that promote rapid thermal stabilization, essential for maintaining consistent high-quality imaging and minimizing focus shifts caused by temperature changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eL-500 Direct Drive Mount\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Drive Motors\u003c\/strong\u003e: Employs state-of-the-art direct-drive motors on each axis, ensuring smooth, fast, and virtually silent movement of the telescope with zero backlash and zero periodic error, perfect for precise tracking and swift repositioning of celestial objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Encoders\u003c\/strong\u003e: Outfitted with high-resolution optical encoders on both axes, providing exacting positioning and movement, crucial for top-tier astrophotography and detailed astronomical studies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAzimuth Dovetail Balance System\u003c\/strong\u003e: Incorporates a finely adjustable balance system that improves the stability and performance of the setup in both alt-azimuth and equatorial configurations, essential for prolonged accurate tracking and reducing stress on the mount during extended observations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Target Acquisition\u003c\/strong\u003e: Achieves impressive slew speeds up to 50 degrees per second, allowing for quick and efficient targeting of celestial bodies and satellites, vital for dynamic observations and responsive astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplication-Specific Advantages\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eThe CDK400 stands out as a formidable system for astrophotographers, offering unmatched tracking accuracy and image stability which facilitate capturing spectacular celestial images with detailed resolution and vibrant colors.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eResearchers will appreciate the CDK400 for its consistent performance and precise data collection capabilities. It serves as a robust platform for sophisticated photometry, spectroscopy, and minor planet tracking, offering a solid foundation for scientific discovery and exploration.\u003c\/p\u003e\n\u003ch3\u003eVisual Observations\u003c\/h3\u003e\n\u003cp\u003eFor enthusiasts of visual astronomy, the CDK400 delivers vibrant and detailed views of the universe. Its significant aperture and high-quality optical components ensure exceptional viewing of planetary, lunar, and deep-sky objects, enriching every observational experience.\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eWith its swift and precise repositioning capabilities, the L-500 mount in the CDK400 system is capable of tracking satellites and space debris. However, it's important to note that while the L-series mounts are highly effective for astrophotography and research applications, they might not meet the optimal performance standards required for dedicated SSA\/SDA operations. For those needs, we recommend exploring our \u003ca href=\"https:\/\/planewave.com\/products\/t-600\/\"\u003eT-600 Direct-Drive Gimbal\u003c\/a\u003e, specifically engineered to exceed the demanding requirements for SSA\/SDA applications, ensuring superior tracking and responsiveness in monitoring and cataloging space objects.\u003c\/p\u003e\n\u003ch3\u003eMount System \u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eMount Weight\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e338 lbs (153 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMax. Load Capacity\u003c\/td\u003e\n\u003ctd\u003e300 lbs (136 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLatitude Range\u003c\/td\u003e\n\u003ctd\u003e0 to 90 degrees, Northern and Southern hemispheres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCable Management\u003c\/td\u003e\n\u003ctd\u003eEquipment cables can be wired through mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eControl System\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eControl Electronics\u003c\/td\u003e\n\u003ctd width=\"645\"\u003ePlaneWave Interface dual axis telescope control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eHoming Sensors\u003c\/td\u003e\n\u003ctd\u003eHome position sensors are included allowing the mount can find its home position on power up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eSlew Rate\u003c\/td\u003e\n\u003ctd\u003e20 degrees per second (standard); 50 degrees per second (maximum), both axes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eAccepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eAperture\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e17 inch (432 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2939 mm (115.71 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e23.7% by surface area; 48.6% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBackfocus from Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e10.32 inch (262.33 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBackfocus from Racked in Focuser\u003c\/td\u003e\n\u003ctd\u003e7.24 inch (184 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e106 lbs (48 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOptimal Field of View\u003c\/td\u003e\n\u003ctd\u003e70mm image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMechanical Structure\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eFork Assembly\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eL-500 Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFork Base\u003c\/td\u003e\n\u003ctd\u003eWelded stainless steel torsion box \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOptical Tube\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss with Carbon Fiber Light Shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eInstrument Payload\u003c\/td\u003e\n\u003ctd\u003e201 lbs (91 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMotion control\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eMotor – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eDirect Drive 3 Phase Axial-Flux Torque Motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eEncoder – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd\u003e152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMotor Torque\u003c\/td\u003e\n\u003ctd\u003eApproximately 20 ft-lbs continuous; 50 ft-lbs peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eDrive Electronics\u003c\/td\u003e\n\u003ctd\u003eIndustrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eTelescope Control Software\u003c\/td\u003e\n\u003ctd\u003eUses PWI4. Incorporates PointXP mount modeling software by Dave Rowe.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSystem Performance \u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003ePointing Accuracy\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e\u0026lt;10 arcsecond RMS with PointXP Model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003ePointing Precision\u003c\/td\u003e\n\u003ctd\u003e2 arcseconds at sidereal velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eTracking Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.3 arcseconds over a 5-minute period at sidereal velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eSystem Natural Frequency\u003c\/td\u003e\n\u003ctd\u003e10 Hz or greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIncluded items\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eIncluded Items\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eHeating elements for dew prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eFlash drive - Contains PWI4 software for mount control , instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eHardware - Six 1\/2-13 x 1 1\/4″ socket head cap screws to bolt the mount to the pier, or wedge; Six 1\/2-13 washers; One extended length shoulder bolt for RA axis to EQ wedge alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOne 16′ USB cable - To connect the mount to the observatory control computer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOne 120VAC power cable - To provide power to the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard Allen Key set - For tightening bolts used on the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eGamepad - Used for control of the mount tracking speeds for visual observing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eDovetail Saddle (200919) - The PW wide saddle comes standard with the L-500 mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42045254631493,"sku":"170130Q","price":85980.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Planewavecdk450system.jpg?v=1746057565"},{"product_id":"planewave-delta-rho-350","title":"PlaneWave DeltaRho 350","description":"\u003cp\u003e\u003cspan class=\"TextRun SCXW90145262 BCX8\" lang=\"EN-US\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun CommentStart CommentHighlightPipeRest CommentHighlightRest SCXW90145262 BCX8\"\u003eThrough years of dreaming of the\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"TextRun SCXW90145262 BCX8\" lang=\"EN-US\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun CommentHighlightRest SCXW90145262 BCX8\"\u003e perfect telescope\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"TextRun SCXW90145262 BCX8\" lang=\"EN-US\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun CommentHighlightRest SCXW90145262 BCX8\"\u003e for wide-field imaging, our \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"TextRun SCXW90145262 BCX8\" lang=\"EN-US\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun CommentHighlightRest SCXW90145262 BCX8\"\u003epursuit of innovation\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"TextRun SCXW90145262 BCX8\" lang=\"EN-US\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun CommentHighlightRest SCXW90145262 BCX8\"\u003e has finally \u003c\/span\u003e\u003cspan class=\"NormalTextRun CommentHighlightRest SCXW90145262 BCX8\"\u003ebeen honored\u003c\/span\u003e\u003cspan class=\"NormalTextRun CommentHighlightRest SCXW90145262 BCX8\"\u003e with PlaneWave’s revolutionary DeltaRho 350 \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"TextRun SCXW90145262 BCX8\" lang=\"EN-US\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun CommentHighlightRest SCXW90145262 BCX8\"\u003ef\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"TextRun SCXW90145262 BCX8\" lang=\"EN-US\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun CommentHighlightRest SCXW90145262 BCX8\"\u003e\/3 telescope. \u003c\/span\u003e\u003cspan class=\"NormalTextRun CommentHighlightPipeRest SCXW90145262 BCX8\"\u003eThe DeltaRho 350 is designed for unsurpassed wide-field imaging and ease of use in the field. Since the primary mirror is fixed in place, collimation is quickly achieved by adjusting the tip and tilt of the secondary mirror. With the Delta Rho 350, your astrophotography experience will be second to none!\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP SCXW90145262 BCX8\" data-ccp-props='{\"201341983\":0,\"335551550\":0,\"335551620\":0,\"335559739\":160,\"335559740\":259}'\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCorrected Cassegrain focus optical design\u003c\/li\u003e\n\u003cli\u003eAperture – 350 mm\u003c\/li\u003e\n\u003cli\u003eFocal length – 1050 mm\u003c\/li\u003e\n\u003cli\u003eFocal Ratio – \u003cem\u003ef\u003c\/em\u003e\/3\u003c\/li\u003e\n\u003cli\u003e60mm Image Circle \u0026gt; 3 degrees\u003c\/li\u003e\n\u003cli\u003eFixed Primary Mirror\u003c\/li\u003e\n\u003cli\u003eCollimation performed via 3 tip\/tilt screws at the secondary mirror\u003c\/li\u003e\n\u003cli\u003eBackfocus of 5.651” (143.535 mm) from mounting surface (without focuser and rotator). This distance includes refraction from filters.\u003c\/li\u003e\n\u003cli\u003eBackfocus of 2.525″ (64.135 mm) with Series-5 focuser and Series-5 Rotator installed (with focuser at midpoint of travel range).\u003c\/li\u003e\n\u003cli\u003eBuilt-in primary and secondary dew heaters with temperature sensors\u003c\/li\u003e\n\u003cli\u003e*L-350 mount seen in product photo is sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCapturing the most stunning astrophotographs possible is something our team is passionate about. From design to manufacture, our goal with the DeltaRho 350 was centered around creating a game-changing wide-field telescope. The DeltaRho 350 is a Cassegrain optical design which means the imaging train is secured at the back of the telescope and does not block the light path compared to prime focus designs, which severely limit users’ ability to operate with filterwheels or large cameras.\u003c\/p\u003e\n\u003cp\u003eThe DeltaRho 350 is an incredible breakthrough in telescope technology and ease of use. Operating at f\/3 and 1050 mm focal length, the DeltaRho is a wide-field telescope that is sure to revolutionize your astrophotography!\u003c\/p\u003e\n\u003cp\u003eAdditionally, the DeltaRho 350 provides a perfectly flat field so your astrophotographs will have stunning clarity from corner to corner of the image without field curvature degrading the photos. Offering the simplicity of single-mirror collimation, the stray light control of advanced baffles, structural performance created through finite element analysis (FEA), and decades of telescope design experience, the DeltaRho 350 is an exceptional telescope. DeltaRho 350 users can experience pinpoint stars edge-to-edge and a 170 x 170 arcminute field of view when using large 16803\/4040 size camera sensors. This field of view is nearly 3 times as large as our CDK14! When equipment fades into the background and simply performs, the astrophotography experience becomes even more fun and rewarding!\u003c\/p\u003e\n\u003ch3\u003eOptical System\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"551\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"232\" height=\"21\"\u003eOptical Design\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"319\"\u003eCorrected Dall-Kirkham (CDK)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eAperture\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e350 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e1050 mm (41.34 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eFocal ratio\u003c\/td\u003e\n\u003ctd class=\"xl66\"\u003ef\u003cspan class=\"font5\"\u003e\/3\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"551\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"232\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"319\"\u003e7.48 in. (190 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eEnhanced aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"551\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"232\" height=\"21\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"319\"\u003e13.78 inches (350mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e14.5 inches (468.3mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eFused Silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eLens Group\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"551\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"232\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"319\"\u003e110 mm (4.33 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eNumber of lenses\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eThree\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eBroadband AR Coatings (less than .5% reflected from 400 to 700nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eStandard Features\u003c\/h3\u003e\n\u003ctable style=\"height: 289px;\" border=\"0\" width=\"941\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"232\" height=\"21\"\u003eCorrected Cassegrain\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"319\"\u003eThe corrected design yields a flat field free from off-axis astigmatism, coma, and field curvature.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCarbon Fiber Truss Design\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eMinimizes thermal expansion which causes focus shift with changes in temperature.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eDovetail Expansion Joint\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eAllows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminum dovetail expand and contract without stressing the carbon fiber lower truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCooling Fans\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eThree cooling fans blow air inside the back of the telescope. This helps the telescope to reach thermal equilibrium quickly. The fans are controlled by a computer if the optional Electronic Focus Accessory (EFA Kit) is purchased.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eDelta-T Ready\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eFor added dew prevention, the DR350 is internally wired with polyimide film heater pads and temperature sensor, ready to be controlled with the optional Delta-T controller.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eShipping\u003c\/h3\u003e\n\u003ctable style=\"height: 94px;\" border=\"0\" width=\"541\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"83\"\u003e \u003ccol width=\"87\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"232\" height=\"21\"\u003eCrated Shipping Weight\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"83\"\u003e225 lbs\u003c\/td\u003e\n\u003ctd width=\"87\"\u003e102 KG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCrate Width\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e31 inches\u003c\/td\u003e\n\u003ctd\u003e787.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCrate Height\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e26 inches\u003c\/td\u003e\n\u003ctd\u003e660.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCrate Length\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e53 inches\u003c\/td\u003e\n\u003ctd\u003e1346.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIncluded Items\u003c\/h3\u003e\n\u003ctable style=\"height: 133px;\" border=\"0\" width=\"718\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"763\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"232\" height=\"21\"\u003eHeating elements for dew prevention\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"763\"\u003eThe heating pads on the primary and secondary mirror require the 5-Series Controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eOTA Cover\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eTo protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eFlashdrive\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eContains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eWrench Set (5812A35)\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eStandard hex wrenches (European orders only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eRecommended Accessories\u003c\/h3\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cstrong\u003eOTA Accessories\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cem\u003eSeries-5 Focuser (6011001)\u003c\/em\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cem\u003eSeries-5 Rotator (6021001)\u003c\/em\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cem\u003eSeries-5 Controller (600199)\u003c\/em\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cstrong\u003eMount Accessories\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cem\u003eL-350 Direct Drive Mount (600549)\u003c\/em\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cem\u003eDeltaRho 350 Piggyback Dovetail (140990)\u003c\/em\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cstrong\u003eImaging Accessories\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cem\u003eTip-Tilt Adapter for Series-5 Focuser or Rotator to SecureFit (6061006)\u003c\/em\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42045287104581,"sku":"140126Q","price":38000.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-delta-rho-350-723588.jpg?v=1731540906"},{"product_id":"skywatcher-quattro-300-1200-f4-imaging-reflector-ota","title":"SkyWatcher Quattro 300\/1200 F4 Imaging Reflector Telescope (OTA)","description":"\u003cp\u003e\u003cbig\u003e\u003cstrong\u003ePremium Photo – 300\/1200 F4 Imaging Reflector\u003cbr\u003e\n\u003c\/strong\u003e\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eFast Photography F\/4 (12-inch) steel tube Newtonian Optical Tube with rings and mounting plate.\u003c\/p\u003e\n\u003cp\u003eClassic f\/4 Newtonian wide-field optical tube with super power linear 2 speed focuser and built for wide field astrophotography, the Sky-Watcher 200mm f\/4 reflector will ensure you fit more sky on your astronomy cameras and reduced exposure times.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKEY FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUser level, intermediate and advanced users.\u003c\/li\u003e\n\u003cli\u003eHighly recommended for astrophotography.\u003c\/li\u003e\n\u003cli\u003eFast F4 focal ratio.\u003c\/li\u003e\n\u003cli\u003eMetallic high reflection coatings\u003c\/li\u003e\n\u003cli\u003eFully blackened\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOTHER INFORMATION:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCast Aluminum tube rings, with Losmandy Dovetail Bar\u003c\/li\u003e\n\u003cli\u003ePremium 2″ diagonal\u003c\/li\u003e\n\u003cli\u003e2″ Dual-speed linear power focuser\u003c\/li\u003e\n\u003cli\u003ePyrex mirrors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TSA","offers":[{"title":"Default Title","offer_id":42045291167813,"sku":"SW300Q-OTA","price":2599.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/skywatcher-quattro-3001200-f4-imaging-reflector-telescope-ota-389204.jpg?v=1731541083"},{"product_id":"planewave-cdk20-f-7-7-ota","title":"Planewave CDK 20 f\/7.7 OTA","description":"\u003cp\u003eCapturing the most stunning astrophotographs possible is something our team is passionate about. From design to manufacture, our goal with the Corrected Dall-Kirkham (CDK) 20″ telescope was centered around performance and ease of use. The Planewave CDK20 f\/7.7 OTA is an incredible breakthrough in telescope technology and produces no off-axis coma and no off-axis astigmatism. Additionally, the CDK20 provides a perfectly flat field so your astrophotographs will have stunning clarity from corner to corner of the image without field curvature degrading the photos. Offering the simplicity of single-mirror collimation, the stray light control of advanced baffles, structural performance created through finite element analysis (FEA), and decades of telescope design experience, the CDK20 is an exceptional diffraction-limited telescope. CDK20 users can experience pinpoint stars edge-to-edge and a 45 x 45 arcminute field of view when using large 16803 size camera sensors. When equipment fades into the background and simply performs, the astrophotography experience becomes even more fun and rewarding!\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch3\u003eCarbon Fiber Truss Design\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eMinimizes thermal expansion which causes focus shift as temperature changes during an imaging session. Carbon fiber also reaches ambient temperatures quickly and is extremely lightweight and rigid to help ensure excellent imaging data is produced.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e3D Printed Baffles\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003ePlaneWave uses digital 3D printing technology to produce lightweight baffle tubes. 3D printers add successive layers of material to construct a baffle system with precision positioned internal stray light baffles to minimize vignetting and maximize image contrast. Quality baffling makes an incredible difference in overall image quality, so we ensured an optimal design was created for our telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDovetail Expansion Joint\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eAllows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminum dovetail to expand and contract without stressing the carbon fiber lower truss. This results in images that are not distorted due to expansion, or contraction of the optical tube materials.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDelta-T Ready\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor added dew prevention, the Planewave CDK20 f\/7.7 OTA is internally wired with polyimide film heater pads and temperature sensor, which is ready to be controlled with the Delta-T via PlaneWave Interface 3 software.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eCooling Fans\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eThree fans on the backplate of the optical tube pull air through the telescope and by the primary mirror. Three fans on the side of the optical tube also blow air across the primary to ensure a boundary layer of air does not distort images. These fans help the telescope reach thermal equilibrium quickly, further reducing any distortion in images due to temperature variations. The fans are controlled by a switch on the optical tube, or can be controlled by via PWI3 software if a PlaneWave Electronic Focus Accessory (EFA Kit) is purchased.\u003c\/p\u003e\n\u003ch4\u003ePlanewave CDK20 f\/7.7 OTA Specifications\u003c\/h4\u003e\n\u003ch3\u003eOptical System\u003c\/h3\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"757\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" width=\"232\"\u003eAperture\u003c\/td\u003e\n\u003ctd width=\"319\"\u003e20 inch (508 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e3951 mm (155.55 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7.77\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e39% of the Primary Mirror Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eBack Focus from mounting surface\u003c\/td\u003e\n\u003ctd\u003e10.61 inch (269.49 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e140 lbs (63.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e47 inch (1,194 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss with carbon fiber light shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eOptimal Field of View\u003c\/td\u003e\n\u003ctd\u003e52mm image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"551\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" width=\"232\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"319\"\u003e7.5 inch (191mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"551\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" width=\"232\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"319\"\u003e20 inch (508 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e20.5 inch (521 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eLens Group\u003c\/h3\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"551\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" width=\"232\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"319\"\u003e90 mm (3.54 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eNumber of lenses\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eBroadband AR Coatings (less than .5% reflected from 400 to 700nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd\u003e20 inch (508 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eStandard Features\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"807\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" width=\"232\"\u003eCarbon Fiber Truss Design\u003c\/td\u003e\n\u003ctd width=\"319\"\u003eMinimizes thermal expansion which causes focus shift with changes in temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eDovetail Expansion Joint\u003c\/td\u003e\n\u003ctd\u003eAllows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminum dovetail expand and contract without stressing the carbon fiber lower truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eCooling Fans\u003c\/td\u003e\n\u003ctd\u003eThree cooling fans ejecting air from the back of the telescope and four fans blowing across the boundary layer of the mirror surface. This helps the telescope to reach thermal equilibrium quickly. The fans are controlled by a computer if the optional Electronic Focus Accessory (EFA Kit) is purchased.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eShipping\u003c\/h3\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"551\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" width=\"232\"\u003eCrated Shipping Weight\u003c\/td\u003e\n\u003ctd width=\"319\"\u003e291 lbs (132.0 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eCrate Width\u003c\/td\u003e\n\u003ctd\u003e33 inch (838 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eCrate Height\u003c\/td\u003e\n\u003ctd\u003e33 inch (838 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eCrate Length\u003c\/td\u003e\n\u003ctd\u003e65 inch (1,651 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIncluded Items\u003c\/h3\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"551\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" width=\"232\"\u003eHeating elements for dew prevention\u003c\/td\u003e\n\u003ctd width=\"319\"\u003eThe heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eOTA Cover\u003c\/td\u003e\n\u003ctd\u003eTo protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eFlashdrive\u003c\/td\u003e\n\u003ctd\u003eContains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eWrench Set (5812A35)\u003c\/td\u003e\n\u003ctd\u003eStandard hex wrenches (European orders only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIncluded Accessories\u003c\/h3\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"551\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"232\"\u003e \u003ccol width=\"319\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" width=\"232\"\u003ePrimary Mirror Cover\u003c\/td\u003e\n\u003ctd width=\"319\"\u003eTo protect the primary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003ePlaneWave Thumb Drive\u003c\/td\u003e\n\u003ctd\u003eContains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003e12VDC Power Supply\u003c\/td\u003e\n\u003ctd\u003eProvides power for the fans (Not included for European Orders)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003eWrench Set\u003c\/td\u003e\n\u003ctd\u003eStandard hex wrenches (European orders only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\"\u003e(5812A35)\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eRecommend Accessories\u003c\/p\u003e\n\u003cp\u003eOTA Accessories\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReducer .66x CDK20 (200166)\u003c\/li\u003e\n\u003cli\u003eDelta T Heater Part (600195)\u003c\/li\u003e\n\u003cli\u003eHendrick Focuser (200340)\u003c\/li\u003e\n\u003cli\u003eIRF90 – Integrated Rotating Focuser (600180)\u003c\/li\u003e\n\u003cli\u003eEFA kit Electronic Focuser (EFA)\u003c\/li\u003e\n\u003cli\u003eLight Shroud CDK20 (200970)\u003c\/li\u003e\n\u003cli\u003eDovetail Clamp CDK20 (200919)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVisual Accessories\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMounting Bracket for Finderscopes (125360)\u003c\/li\u003e\n\u003cli\u003eFinderscope and Mounting Bracket (6009003)\u003c\/li\u003e\n\u003cli\u003eVisual Adapter – CDK20 (200399)\u003c\/li\u003e\n\u003cli\u003e2 Inch Mirror Diagonal (D1029ED)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMount Accessories\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePiggyback Dovetail Bars (200990)\u003c\/li\u003e\n\u003cli\u003eL-500 Direct Drive Mount (600550)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42045306044485,"sku":"200127Q","price":67999.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-cdk20-f77-ota-277526.jpg?v=1731540903"},{"product_id":"borg-107fl-telescope-set-carbon-tube","title":"BORG 107FL Telescope Set (Carbon Tube)","description":"\u003cp\u003eThe BORG 107FL Telescope Set CR is the premium model BORG telescope, designed for professional astro-watchers. This telescope features a 600mm focal length objective lens that incorporates high-end apochromat fluorite glass elements from Canon Optron, Inc.\u003c\/p\u003e\n\u003cp\u003eAxial chromatic aberrations are suppressed even further with the 107FL objective lens when matched against the 90FL. The BORG 107FL Telescope Set CR is constructed with a lightweight and compactable carbon fiber barrel. Arca-Swiss Quick Release base plates are included for tripod mounting. The BORG 107FL Telescope Set CR is recommended for starry sky, nebula, star cluster, and planet observation.\u003c\/p\u003e\n\u003cp\u003eYou can convert this telescope to tele lens by swapping the prism and eyepiece with a BORG camera mount adapter (sold separately).\u003c\/p\u003e\n\u003ch3\u003eMain Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFluorite glass elements from Canon Optron, Inc. are incorporated in the optical design for ultimate resolution and minimal axial chromatic aberrations.\u003c\/li\u003e\n\u003cli\u003eObjective lens optical construction: 2 elements in 2 groups, fluorite apochromat, fully multicoated.\u003c\/li\u003e\n\u003cli\u003eRobust and beautiful carbon fiber barrel.\u003c\/li\u003e\n\u003cli\u003eBORG 80Ø barrel system.\u003c\/li\u003e\n\u003cli\u003eRack \u0026amp; pinion focusing system.\u003c\/li\u003e\n\u003cli\u003eErect prism (included) allows users to observe both on-ground objects and celestial bodies.\u003c\/li\u003e\n\u003cli\u003e20mm and 9mm eyepieces included.\u003c\/li\u003e\n\u003cli\u003eSuper lightweight at 3.7 kilograms (including accessories).\u003c\/li\u003e\n\u003cli\u003eArca-Swiss Quick Release System tripod plate.\u003c\/li\u003e\n\u003cli\u003eObjective lenses and major parts are Made in Japan.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e'CR' stands for carbon fiber barrel and rack \u0026amp; pinion focusing system.\u003c\/p\u003e\n\u003cp\u003eCamera mount adapters and other camera components are sold separately.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable class=\"prodSpecs\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width: 50%;\"\u003e\n\u003ccol style=\"width: 50%;\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Name\u003c\/th\u003e\n\u003ctd\u003eBORG 107FL Telescope Set CR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Code\u003c\/th\u003e\n\u003ctd\u003e6207\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length, mm\u003c\/th\u003e\n\u003ctd\u003e600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin. Length, mm\u003c\/th\u003e\n\u003ctd\u003e504\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight, g\u003c\/th\u003e\n\u003ctd\u003e3700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter Size, mm\u003c\/th\u003e\n\u003ctd\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e","brand":"CR Kennedy","offers":[{"title":"Default Title","offer_id":42045307191365,"sku":"6207","price":5925.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/borg-107fl-telescope-set-carbon-tube-450308.jpg?v=1731540540"},{"product_id":"borg-90fl-telescope-set-cr-carbon-tube","title":"BORG 90FL Telescope Set CR (Carbon Tube)","description":"\u003cp\u003eThe BORG 90FL CR has exceptional optical resolution, accomplished by apochromat fluorite glass elements from Canon Optron, Inc. built in the optical design of the objective lens, and a super tele 500mm focal length and aperture of f\/5.6.\u003c\/p\u003e\n\u003cp\u003eA great piece of gear for observing celestial bodies and bird life in the Australian bush and city environments.\u003c\/p\u003e\n\u003cp\u003eThe 90mm front element diameter does not hamper the 90FL's extreme compact and lightweight capabilities thanks to the detachable carbon fiber made barrel. Recommended for starry sky, nebula, star cluster, and planet observation. You can convert this telescope to a tele lens by swapping the prism and eyepiece with a BORG camera mount adapter (sold separately).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eObjective lens equipped with apochromat fluorite glass elements from Canon Optron, Inc.\u003c\/li\u003e\n\u003cli\u003eObjective lens optical design: 2 elements in 2 groups, fluorite, apochromat, fully multicoated.\u003c\/li\u003e\n\u003cli\u003eRobust and beautiful carbon fiber barrel.\u003c\/li\u003e\n\u003cli\u003eBORG 80Ø barrel system.\u003c\/li\u003e\n\u003cli\u003eRack \u0026amp; pinion focusing system.\u003c\/li\u003e\n\u003cli\u003eErect prism (included) allows users to observe both on-ground objects and celestial bodies.\u003c\/li\u003e\n\u003cli\u003e20mm and 9mm eyepieces included.\u003c\/li\u003e\n\u003cli\u003eLightweight construction of 3 kilograms (including accessories).\u003c\/li\u003e\n\u003cli\u003eArca-Swiss Quick Release System tripod plate.\u003c\/li\u003e\n\u003cli\u003eObjective lenses and major parts are Made in Japan.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e'CR' stands for carbon fiber barrel and rack \u0026amp; pinion focusing system.\u003c\/p\u003e\n\u003cp\u003eCamera mount adapters and other camera components are sold separately.\u003c\/p\u003e\n\u003ch2\u003eMain Features\u003c\/h2\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable class=\"prodSpecs\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width: 50%;\"\u003e\n\u003ccol style=\"width: 50%;\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Name\u003c\/th\u003e\n\u003ctd\u003eBORG 90FL Telescope Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Code\u003c\/th\u003e\n\u003ctd\u003e6390\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length, mm\u003c\/th\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMin. Length, mm\u003c\/th\u003e\n\u003ctd\u003e420\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight, g\u003c\/th\u003e\n\u003ctd\u003e2900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter Size, mm\u003c\/th\u003e\n\u003ctd\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e","brand":"CR Kennedy","offers":[{"title":"Default Title","offer_id":42045307256901,"sku":"6390","price":4599.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/borg-90fl-telescope-set-cr-carbon-tube-266022.jpg?v=1731540543"},{"product_id":"planewave-delta-rho-500","title":"PlaneWave DeltaRho 500","description":"\u003cp\u003eAfter successfully introducing the DeltaRho 350, the DeltaRho 500 is now available for transcending the challenges of-ultra wide field imaging. With a primary mirror that is fixed in place, collimation is quickly achieved with a simple adjustment to the tip and tilt of the secondary mirror. With more than twice the light-gathering power of the DeltaRho 350, maximizing the performance of your astrograph has never been easier due to PlaneWave’s pursuit of the perfect telescope!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"\u003eCorrected Cassegrain focus optical design\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"2\" data-aria-level=\"1\"\u003eAperture – 508 mm (20″)\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"\u003eFocal length – 1537 mm\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"\u003eFocal Ratio – \u003ci\u003ef\u003c\/i\u003e\/3.03\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"\u003e70mm Image Circle \u0026gt; 2.6 degrees\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"\u003eFixed Primary Mirror\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"\u003eCollimation performed via 3 tip\/tilt screws at the secondary mirror\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"\u003e9.166” (232.8 mm) from mounting surface (without focuser and rotator).\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"\u003eBackfocus of 5.81″ (147.6mm) with Series-5XL focuser and Series-5 Rotator installed (with focuser at midpoint of travel range).\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"\u003eBuilt-in primary and secondary dew heaters with temperature sensors\u003c\/li\u003e\n\u003cli data-leveltext=\"•\" data-font=\"Lao UI\" data-listid=\"8\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"469769242\":\u0026lt;8226\u0026gt;,\"469777804\":\"•\"}' aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"\u003eCompatible with L-500 or 600 series direct drive mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOur team at PlaneWave is passionate about designing exceptional telescopes so that users around the world are able to capture the most awe-inspiring astro images possible. From design to manufacture, our goal with the DeltaRho 500 was centered around creating a revolutionary wide-field telescope. The DeltaRho 500 is a Cassegrain Optical Design with the imaging train at the back of the telescope to prevent obstruction of the instrument. This offers a real advantage against prime focus designs, which can severely limit users’ ability to operate with filter wheels or large cameras. Witness the incredible breakthrough in telescope technology as the DeltaRho 500 operates at f\/3 and 1537 mm focal length, which is sure to revolutionize your astrophotography.\u003c\/p\u003e\n\u003cp\u003eLast, but not least, the DeltaRho 500 provides a flat field, which ensures stunning clarity from corner-to-corner images without field curvature degradation. The DeltaRho 500 offers the simplicity of single-mirror collimation, stray light control of advanced 3D printed baffles, and structural performance created through finite element analysis (FEA). DeltaRho 500 users can experience pinpoint stars edge-to-edge and a 2-degree field of view when using large 16803\/4040 (52mm) size camera sensors. This field of view is over twice as large as our CDK 20! This kind of equipment allows users to experience a whole new level of wide-field imaging that can bring them closer than ever to deep space. The DeltaRho 500 allows nothing to stand in between the user and amazing astro images.\u003c\/p\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003ch3\u003eCarbon Fiber Tube Design\u003c\/h3\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003eMinimizes thermal expansion which causes focus shift as temperature changes during an imaging session. Carbon fiber also reaches ambient temperatures quickly and is extremely lightweight and rigid to help ensure that excellent imaging data is produced.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003ch3\u003eCollimation software\u003c\/h3\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003eAlong with the included collimation mask, PlaneWave Collimation software allows for quick and easy collimation necessary to maximize the performance of a fast f-ratio optical system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003ch3\u003e3D Printed Baffles\u003c\/h3\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003ePlaneWave's digital 3D printing technology adds successive layers of material to our baffle systems for lightweight, precision-positioned internal stray light control to minimize vignetting and maximize image contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003ch3\u003eCooling Fans\u003c\/h3\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003eThree fans are strategically placed on the backplate of the optical tube to ventilate through the telescope and by the primary mirror. Four additional fans on the side of the optical tube provide airflow across the primary, bringing thermal equilibrium efficiently to prevent distorted images due to temperature variations.\u003c\/p\u003e\n\u003cp\u003eThe fans are controlled via the PWI 4 software with the PlaneWave Series 5 Controller sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003ch3\u003eDew Control Ready\u003c\/h3\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003eFor added dew prevention, the DR500 is internally wired with polyimide film heater pads and a temperature sensor, which is ready to be controlled with the Series 5 Controller via PWI 4 software.\u003c\/p\u003e\n\u003ch3\u003eOptical system\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"608\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"213\"\u003e\n\u003ccol width=\"395\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"213\" height=\"21\"\u003eOptical Design\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"395\"\u003eCorrected Cassegrain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eAperture\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e508 mm (20 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e1537 mm (60.5 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eFocal ratio\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003ef\/3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e59 % by diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eBack Focus from Mounting Surface (No focuser\/rotator installed)\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e9.166 in (232.8 mm) from mounting surface;  7.271 inch (184.7 mm) from lens cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eWeight\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e165 lbs (75 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e35.1 inch (892 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eOptical Design Performance (Spot Diameter)\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e3.86 micron RMS on-axis, 4.04 micron RMS at 22 mm off-axis, and 6.04 micron RMS at 35 mm off-axis (Spot Diameters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eTelescope Cage\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eCarbon fiber truss poles with carbon fiber shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eOptimal Field of View\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e70mm image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"608\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"213\"\u003e\n\u003ccol width=\"395\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"213\" height=\"21\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"395\"\u003e 20 inch (508 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003e20.8 inch (528 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eProlate ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eEnhanced aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"608\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"213\"\u003e\n\u003ccol width=\"395\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"213\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"395\"\u003e286 mm (11.26 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eEnhanced aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eLens Group\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"608\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"213\"\u003e\n\u003ccol width=\"395\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" width=\"213\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"395\"\u003e160 mm (6.3 inch)  Largest Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eNumber of lenses\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eThree\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eBroadband AR Coatings (on avg. less than .5% reflected from 400 to 700 nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIncluded items\u003c\/h3\u003e\n\u003ctable border=\"0\" width=\"1047\" cellspacing=\"0\" cellpadding=\"0\" data-tablestyle=\"MsoNormalTable\" data-tablelook=\"1696\" aria-rowcount=\"4\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"280\"\u003e\n\u003ccol width=\"767\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr aria-rowindex=\"1\"\u003e\n\u003ctd class=\"xl65\" width=\"280\" height=\"21\" data-celllook=\"69905\"\u003eHeating elements for dew prevention\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"767\" data-celllook=\"69905\"\u003eThe heating pads on the primary and secondary mirror require the Series 5  Controller (sold separately).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr aria-rowindex=\"2\"\u003e\n\u003ctd class=\"xl65\" height=\"21\" data-celllook=\"69905\"\u003eOTA Cover\u003c\/td\u003e\n\u003ctd class=\"xl65\" data-celllook=\"69905\"\u003eWhich protects the primary mirror and the inside of the optical tube.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr aria-rowindex=\"3\"\u003e\n\u003ctd class=\"xl65\" height=\"21\" data-celllook=\"69905\"\u003eFlashdrive\u003c\/td\u003e\n\u003ctd class=\"xl65\" data-celllook=\"69905\"\u003eContains software and instructions for collimation and spacing the primary to the secondary mirror.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr aria-rowindex=\"4\"\u003e\n\u003ctd class=\"xl65\" height=\"21\" data-celllook=\"69905\"\u003eWrench Set (5812A35)\u003c\/td\u003e\n\u003ctd class=\"xl65\" data-celllook=\"69905\"\u003eStandard hex wrenches (European orders only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eConfigurations\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cp data-ogsb=\"white\"\u003e\u003cspan data-ogsc=\"black\"\u003eFor the DeltaRho 500 and Series-5XL Focuser: \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp data-ogsb=\"white\"\u003e\u003cspan data-ogsc=\"black\"\u003eTo achieve proper mechanical clearance, a 0.5″ spacer (#6003165) is\u003cb\u003e required\u003c\/b\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp data-ogsb=\"white\"\u003e\u003cspan data-ogsc=\"black\"\u003eIf the user plans on using our Focuser and Rotator, the 0.5″ spacer is placed\u003cb\u003e in between\u003c\/b\u003e the Focuser and Rotator, then the Tip-Tilt Adapter.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp data-ogsb=\"white\"\u003e\u003cspan data-ogsc=\"black\"\u003eIf the user plans on using only the focuser, the 0.5″ spacer, assembles as follows: OTA, Focuser, Spacer, then Tip-Tilt Adapter.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp data-ogsb=\"white\"\u003e\u003cspan data-ogsc=\"black\" data-ogsb=\"white\"\u003eThe  \u003c\/span\u003e\u003cspan data-ogsc=\"black\"\u003eTip Tilt Adapter is compatible with the Series- 5XL Focuser, as both the focuser and the tip-tilt accessory use the 7.125″ flange interface. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-ogsb=\"white\"\u003eRecommended Accessories\u003c\/h3\u003e\n\u003cp\u003eMount Accessories\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eL-500 Direct Drive Mount (600550)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImaging Accessories\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTip-Tilt Adapter for Series-5 Focuser or Rotator to SecureFit (6061006)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOTA Accessories\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e0.5″ Extension Spacer for 7.125″ Flange Interface (6003165)\u003c\/li\u003e\n\u003cli\u003ePiggyback Dovetail Bar (201990)\u003c\/li\u003e\n\u003cli\u003eSeries-5XL Focuser (6071001)\u003c\/li\u003e\n\u003cli\u003eSeries-5 Rotator (6021001)\u003c\/li\u003e\n\u003cli\u003eSeries-5 Controller (600199)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42045311451205,"sku":"200128Q","price":117999.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-delta-rho-500-503369.jpg?v=1731540903"},{"product_id":"planewave-irdk-14-ota","title":"Planewave IRDK 14 OTA","description":"\u003cp\u003e\u003cspan\u003eThe IRDK14 from PlaneWave Instruments is a precisely engineered optical system designed for high performance in infrared wavelengths. It is an excellent tool for advanced astronomical research and remote sensing applications, offering superior performance for infrared imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eIRDK14’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Optimized Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eThe IRDK14 features a 356 mm aperture and an f\/7.2 focal ratio, enhancing its capacity to gather infrared light effectively. This setup is ideal for detailed infrared observations and long-exposure imaging, providing exceptional light-gathering capabilities.\u003c\/p\u003e\n\u003ch3\u003eSpecialized Optical Design for Infrared\u003c\/h3\u003e\n\u003cp\u003eThe Dall-Kirkham optical design of the IRDK14 is optimized for infrared wavelengths. There are no refractive lenses, only reflective fused silica mirrors. The reflective coatings are a protected gold with better than 98% reflectivity from .65 microns (650nm) to 5 microns (5000nm), making it well-suited for infrared astronomy or LIDAR applications. UV-optimized coatings can also be provided, and potential customers are encouraged to contact our technical sales team to discuss UV optimization.\u003c\/p\u003e\n\u003ch3\u003eRobust Mechanical Structure\u003c\/h3\u003e\n\u003cp\u003eConstructed using carbon fiber, the optical tube of the IRDK14 offers durability and stability with minimal thermal expansion. This design ensures consistent performance under various environmental conditions, making it suitable for intensive scientific applications.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Thermal Management\u003c\/h3\u003e\n\u003cp\u003eThe IRDK14 includes cooling fans and a system prepared for Delta-T applications, promoting rapid thermal equilibrium. This feature is critical for minimizing air turbulence within the tube, thus reducing potential image distortion and enhancing overall imaging quality.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Dew Control\u003c\/h3\u003e\n\u003cp\u003eInfrared observations are prone to condensation, but the IRDK14 tackles this with advanced dew prevention technology. Heater pads, controlled via PlaneWave’s software, ensure the optical surfaces stay clear from dew, maintaining consistent and clear imaging performance.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eInfrared Astronomy\u003c\/h3\u003e\n\u003cp\u003eThe IRDK14 excels in infrared astronomy, where its significant aperture and infrared-optimized optics allow for precise observation of celestial objects in infrared light. This capability is essential for studying astrophysical phenomena invisible to the naked eye or standard optical wavelengths.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Research and LIDAR Applications\u003c\/h3\u003e\n\u003cp\u003eWith its specialized design and infrared optimization, the IRDK14 is a robust platform for advanced scientific research, including LIDAR and other remote sensing applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features Overview\u003c\/h4\u003e\n\u003cp\u003eThe IRDK14 comes with impressive specifications tailored for infrared optimization:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGold-coated mirrors optimized for high reflectivity in infrared wavelengths (ultraviolet optimization available)\u003c\/li\u003e\n\u003cli\u003e14-inch (356 mm) aperture\u003c\/li\u003e\n\u003cli\u003e2563 mm focal length\u003c\/li\u003e\n\u003cli\u003ef\/7.2 focal ratio\u003c\/li\u003e\n\u003cli\u003e282mm back focus from mounting surface\u003c\/li\u003e\n\u003cli\u003e70mm image circle\u003c\/li\u003e\n\u003cli\u003eRock-solid fused silica mirrors with low thermal expansion\u003c\/li\u003e\n\u003cli\u003eLightweight and rigid carbon fiber optical tube assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eOptical Systems\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable width=\"521\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"237\"\u003e \u003ccol width=\"284\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"237\" height=\"21\"\u003eAperture\u003cspan\u003e \u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd width=\"284\"\u003e356mm (14 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2563mm (101 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003eF\/7.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e23.5% by Surface Area: 48.5% by Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus From Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e282mm (11.09 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight\u003cspan\u003e \u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e22kg (48lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e889mm (35 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss And Light Shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSecondary Mirror\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable width=\"238\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"93\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"93\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e165mm (6.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused Silica (Quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable style=\"width: 551px;\" width=\"266\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 250px;\" width=\"121\"\u003e \u003ccol style=\"width: 299px;\" width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"121\" height=\"21\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e355.6mm (14 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e468.3mm (14.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlated Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003cspan\u003e \u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eFused Silica (Quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable style=\"width: 99.880786%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.371631%;\"\u003e\u003cstrong\u003eIncluded Items\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 84.489959%;\"\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.371631%;\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 84.489959%;\"\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.371631%;\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 84.489959%;\"\u003eFlashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.371631%;\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 84.489959%;\"\u003eWrench Set (5812A35) - Standard hex wrenches (European orders only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42360006967365,"sku":"140120Q","price":39000.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/IRDK14.jpg?v=1739424162"},{"product_id":"planewave-irdk-12-5-ota","title":"Planewave IRDK 12.5 OTA","description":"\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch2\u003eIRDK12.5’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Optimized Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eThe IRDK12.5 features a significant 318 mm aperture and an f\/8 focal ratio, enhancing its efficiency in capturing infrared light. This setup is perfect for detailed infrared observations and extensive exposure imaging, offering outstanding light-gathering capacity.\u003c\/p\u003e\n\u003ch3\u003eSpecialized Optical Design for Infrared\u003c\/h3\u003e\n\u003cp\u003eThe Dall-Kirkham optical design of the IRDK12.5 is tailored for infrared wavelengths. It incorporates only reflective fused silica mirrors and no refractive lenses. The reflective coatings are protected gold, ensuring more than 98% reflectivity from 0.65 microns (650nm) to 5 microns (5000nm), making it ideal for infrared astronomy and environmental LIDAR applications. UV-optimized coatings are also available upon request.\u003c\/p\u003e\n\u003ch3\u003eRobust Mechanical Structure\u003c\/h3\u003e\n\u003cp\u003eConstructed using carbon fiber, the optical tube of the IRDK12.5 ensures durability and stability with minimal thermal expansion. This design maintains consistent performance under varying environmental conditions, suitable for rigorous scientific applications.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Thermal Management\u003c\/h3\u003e\n\u003cp\u003eEquipped with cooling fans and a system ready for Delta-T applications, the IRDK12.5 promotes rapid thermal equilibrium. This feature is critical for minimizing air turbulence inside the tube, thereby reducing potential image distortion and enhancing the quality of imaging.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Dew Control\u003c\/h3\u003e\n\u003cp\u003eThe IRDK12.5 is designed to combat condensation, a common challenge in infrared observations. Advanced dew prevention technology, including heater pads controlled via PlaneWave’s software, keeps the optical surfaces clear of dew, ensuring consistent and clear imaging performance.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eInfrared Astronomy\u003c\/h3\u003e\n\u003cp\u003eThe IRDK12.5 excels in infrared astronomy, where its large aperture and infrared-optimized optics allow for detailed observation of celestial objects in infrared light. This capability is essential for studying astrophysical phenomena not visible in standard optical wavelengths.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Research and LIDAR Applications\u003c\/h3\u003e\n\u003cp\u003eWith its specialized design and infrared optimization, the IRDK14 is a robust platform for advanced scientific research, including LIDAR and other remote sensing applications.\u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable width=\"521\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"237\"\u003e \u003ccol width=\"284\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"237\" height=\"21\"\u003eAperture \u003c\/td\u003e\n\u003ctd width=\"284\"\u003e318mm (12.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2541 (100 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e42% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus From Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e265mm (10.4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight \u003c\/td\u003e\n\u003ctd\u003e19kg (42 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e787mm (31 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable width=\"238\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"93\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"93\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e118mm (4.65 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused Silica (Quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable width=\"266\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"121\" height=\"21\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e318mm (12.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e330mm (13 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlated Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial \u003c\/td\u003e\n\u003ctd\u003eFused Silica (Quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating \u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Items\u003c\/td\u003e\n\u003ctd\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eFlash drive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWrench Set (5812A35) - Standard hex wrenches (European orders only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eCable connector for fan power - Provides a connection method for powering for the fans if the user does not have the 125901 EFA kit. User must provide 12VDC power supply 2.1 barrel jack connector that is center positive. (Not included for European orders)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42363507015749,"sku":"125120Q","price":29799.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveIRDK12.5.jpg?v=1739484584"},{"product_id":"planewave-cdk-17-ota","title":"Planewave CDK 17 OTA","description":"\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch2\u003eCDK17’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Moderate Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eThe CDK17 features a 432 mm aperture and an f\/6.8 focal ratio. This combination enhances its capability to capture deep-sky objects with exceptional detail, offering excellent light-gathering efficiency and a broad field of view suitable for advanced research and high-quality imaging.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Optical Design\u003c\/h3\u003e\n\u003cp\u003eEquipped with a state-of-the-art Corrected Dall-Kirkham optical system, the CDK17 delivers outstanding image clarity. Its innovative design eliminates off-axis coma and astigmatism. It provides a perfectly flat field, ensuring images are sharp and detailed across the entire field of view with minimal need for post-processing.\u003c\/p\u003e\n\u003ch3\u003eRobust Mechanical Structure\u003c\/h3\u003e\n\u003cp\u003eConstructed with a carbon fiber optical tube, the CDK17 is lightweight and durable. Its design minimizes thermal expansion, ensuring minimal focus shift with temperature changes, making it ideal for extended observing sessions under varying environmental conditions.\u003c\/p\u003e\n\u003ch3\u003eHigh-Performance Mirrors and Coatings\u003c\/h3\u003e\n\u003cp\u003eUsing fused silica mirrors, the CDK17 maintains precise optical alignment and surface accuracy, even amid temperature fluctuations. The high-quality coatings enhance light transmission and reduce stray light, optimizing performance for specialized observational tasks.\u003c\/p\u003e\n\u003ch3\u003eThermal Management\u003c\/h3\u003e\n\u003cp\u003eThe CDK17 is equipped with cooling fans and a Delta-T ready system to achieve thermal equilibrium swiftly. These features help to minimize air turbulence within the tube, thus reducing image distortion and maintaining consistent imaging quality.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Dew Control\u003c\/h3\u003e\n\u003cp\u003eThe telescope incorporates advanced dew prevention technology with heater pads controlled by PlaneWave’s software. This ensures that optical surfaces remain clear of condensation during humid conditions, thus maintaining clear and consistent imaging performance.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eWith its large image circle and exceptional field flatness, the CDK17 allows astrophotographers to capture expansive and breathtaking views of the cosmos with incredible detail and clarity.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eThe precise and stable imaging capabilities of the CDK17 make it an invaluable tool for academic institutions and observatories engaged in complex astronomical research, including deep-sky surveys and detailed photometric studies.\u003c\/p\u003e\n\u003ch3\u003eVisual Observations\u003c\/h3\u003e\n\u003cp\u003eThe CDK17 excels in visual observation, offering bright and crisp views ideal for star parties and serious visual astronomy. The telescope's superior optical quality provides stunning views of planetary, lunar, and deep-sky objects, making every viewing session a remarkable experience.\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eThe CDK17 also lends itself to Space Situational Awareness and Space Domain Awareness applications. Its capability to provide detailed observations can be essential for tracking and monitoring satellites and other space debris, contributing valuable data for space traffic management and safety initiatives.\u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"521\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"237\"\u003e \u003ccol width=\"284\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"237\"\u003eAperture \u003c\/td\u003e\n\u003ctd width=\"284\"\u003e432mm (17 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2939\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6,8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e23.7% by surface area; 48.6% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus From Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e262.33mm (10.32 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus From Racked In Focuser\u003c\/td\u003e\n\u003ctd\u003e184mm (7.24 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight \u003c\/td\u003e\n\u003ctd\u003e48kg (106 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e1067mm (42 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design Performance\u003c\/td\u003e\n\u003ctd\u003e6.5 micron rms at 21mm and 9.6 micron at 26mm off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss and light shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle Size\u003c\/td\u003e\n\u003ctd\u003e70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"238\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"93\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"93\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e165mm (6.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused Silica (Quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eLens Group\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"266\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"121\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e105mm (4.13 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eBroadband AR Coatings (less than .5% reflected from 400 to 700nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"266\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"121\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e432 mm (17 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e445 mm (17.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial \u003c\/td\u003e\n\u003ctd\u003eFused Silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003e\n\u003cmeta charset=\"UTF-8\"\u003eEnhanced aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Items\u003c\/td\u003e\n\u003ctd\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eFlashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42363537293381,"sku":"170101Q","price":47299.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/CopyofUntitled_1_83247145-d7e3-45eb-9045-6934a4a77217.jpg?v=1739943279"},{"product_id":"planewave-irdk-20-ota","title":"Planewave IRDK 20 OTA","description":"\u003ch2\u003eIRDK20’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Optimized Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eThe IRDK20 features a substantial 508 mm aperture and an f\/6.8 focal ratio, enhancing its ability to gather infrared light effectively. This setup is ideal for detailed infrared observations and long-exposure imaging, offering excellent light-gathering capabilities.\u003c\/p\u003e\n\u003ch3\u003eSpecialized Optical Design for Infrared\u003c\/h3\u003e\n\u003cp\u003eThe Dall-Kirkham optical design of the IRDK20 is optimized for infrared wavelengths. There are no refractive lenses, only reflective fused silica mirrors. The reflective coatings are a protected gold with better than 98% reflectivity from .65 microns (650nm) to 5 microns (5000nm), ideal for infrared astronomy or LIDAR applications. UV-optimized coatings can also be provided, so please contact our technical sales team to discuss UV optimization.\u003c\/p\u003e\n\u003ch3\u003eRobust Mechanical Structure\u003c\/h3\u003e\n\u003cp\u003eConstructed using carbon fiber, the optical tube of the IRDK20 provides durability and stability with minimal thermal expansion. This design ensures consistent performance across varying environmental conditions, making it suitable for intensive scientific applications.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Thermal Management\u003c\/h3\u003e\n\u003cp\u003eThe IRDK20 includes cooling fans and a system prepared for Delta-T applications, promoting rapid thermal equilibrium. This setup is crucial for minimizing air turbulence within the tube, thus reducing potential image distortion and enhancing overall imaging quality.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Dew Control\u003c\/h3\u003e\n\u003cp\u003eInfrared observations can be prone to condensation, but the IRDK20 addresses this with advanced dew prevention technology. Heater pads, controlled via PlaneWave’s software, ensure the optical surfaces remain clear from dew, maintaining consistent and clear imaging performance.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eInfrared Astronomy\u003c\/h3\u003e\n\u003cp\u003eThe IRDK20 excels in infrared astronomy, where its large aperture and infrared-optimized optics allow for detailed observation of celestial objects in infrared light. This capability is crucial for studying astrophysical phenomena invisible to the naked eye or standard optical wavelengths.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Research and LIDAR Applications\u003c\/h3\u003e\n\u003cp\u003eWith its specialized design and infrared optimization, the IRDK20 is a robust platform for advanced scientific research, including LIDAR applications.\u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"521\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"237\"\u003e \u003ccol width=\"284\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"237\"\u003eAperture \u003c\/td\u003e\n\u003ctd width=\"284\"\u003e508 mm (20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e3454mm (136\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e39% of the Primary Mirror Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus From Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e8.81 in (224 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight \u003c\/td\u003e\n\u003ctd\u003e63.5kg (140 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e1194mm (47\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss and light shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"238\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"93\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"93\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e191mm (7.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused Silica (Quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"266\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"121\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e508mm (20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e521mm (20.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial \u003c\/td\u003e\n\u003ctd\u003eFused Silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Items\u003c\/td\u003e\n\u003ctd\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eFlashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42363728396357,"sku":"200120Q","price":78399.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveIRDK20.jpg?v=1739491445"},{"product_id":"planewave-cdk-24-ota","title":"Planewave CDK 24 OTA","description":"\u003ch2\u003eCDK24’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Moderate Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eThe CDK24 features a substantial 610 mm aperture and a moderate f\/6.5 focal ratio. This setup enhances its capability to capture deep-sky objects with remarkable detail, providing excellent light-gathering efficiency and a broad field of view for research and imaging.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Optical Design\u003c\/h3\u003e\n\u003cp\u003eEquipped with a state-of-the-art Corrected Dall-Kirkham optical system, the CDK24 offers exceptional image clarity. Its design eliminates off-axis coma and astigmatism and delivers a perfectly flat field, ensuring images are sharp and detailed across the entire field of view with minimal post-processing adjustments.\u003c\/p\u003e\n\u003ch3\u003eRobust Mechanical Structure\u003c\/h3\u003e\n\u003cp\u003eConstructed with a carbon fiber optical tube, the CDK24 is lightweight and durable. Its thermal expansion coefficient ensures minimal focus shift as temperatures change, making it ideal for prolonged observing sessions under varying environmental conditions.\u003c\/p\u003e\n\u003ch3\u003eHigh-Performance Mirrors and Coatings\u003c\/h3\u003e\n\u003cp\u003eUtilizing fused silica mirrors, the CDK24 maintains precise optical alignment and surface accuracy, even with temperature fluctuations. Its high-quality coatings enhance light transmission and reduce stray light, optimizing performance for specialized observational tasks.\u003c\/p\u003e\n\u003ch3\u003eThermal Management\u003c\/h3\u003e\n\u003cp\u003eThe CDK24 is equipped with cooling fans and a Delta-T ready system to achieve thermal equilibrium swiftly. These features help to minimize air turbulence within the tube, thus reducing image distortion and maintaining consistent imaging quality.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Dew Control\u003c\/h3\u003e\n\u003cp\u003eThe telescope incorporates advanced dew prevention technology with heater pads controlled by PlaneWave’s software. This ensures that optical surfaces remain clear of condensation during humid conditions, thus maintaining clear and consistent imaging performance.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eWith its large image circle and exquisite field flatness, the CDK24 allows astrophotographers to capture expansive and breathtaking views of the cosmos with incredible detail and clarity.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eThe precise and stable imaging capabilities of the CDK24 make it an invaluable tool for academic institutions and observatories engaged in complex astronomical research, including deep-sky surveys and detailed photometric studies.\u003c\/p\u003e\n\u003ch3\u003eVisual Observations\u003c\/h3\u003e\n\u003cp\u003eThe CDK24 excels in visual observation, offering bright and crisp views ideal for star parties and serious visual astronomy. The telescope's large aperture and superior optical quality provide stunning views of planetary, lunar, and deep-sky objects, making every viewing session a remarkable experience.\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eThe CDK24 also lend itself to applications in Space Situational Awareness and Space Domain Awareness. Its capability to provide detailed observations can be essential for tracking and monitoring satellites and other space debris, contributing valuable data for space traffic management and safety initiatives.\u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable width=\"521\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"237\"\u003e \u003ccol width=\"284\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"237\" height=\"21\"\u003eAperture \u003c\/td\u003e\n\u003ctd width=\"284\"\u003e610 mm (24\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e3974 mm (156\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e47% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus From Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e364.46 mm (14.349\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight \u003c\/td\u003e\n\u003ctd\u003e240 lbs (108.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e1422 mm (56\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design Performance\u003c\/td\u003e\n\u003ctd\u003e2.4-micron RMS on-axis, 4.0-micron RMS at 26 mm off-axis, 4.8-micron at 35 mm off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss with aluminum light shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle Size\u003c\/td\u003e\n\u003ctd\u003e70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable width=\"238\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"93\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"93\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e280 mm (11\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminum - 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eLens Group\u003c\/h3\u003e\n\u003ctable width=\"266\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"121\" height=\"21\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e135 mm (5.31\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eBroadband AR Coatings (less than .5% reflected from 400 to 700 nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable width=\"266\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"121\"\u003e \u003ccol width=\"145\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"121\" height=\"21\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e610 mm (24\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e622 mm (24.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003e\n\u003cmeta charset=\"UTF-8\"\u003e Enhanced aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42363775811653,"sku":"240104Q","price":127499.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveCDK24.jpg?v=1739492210"},{"product_id":"planewave-cdk-24-ota-copy","title":"Planewave IRDK 24 OTA","description":"\u003ch2\u003eLarge Aperture and Optimized Focal Ratio\u003c\/h2\u003e\n\u003cp\u003eThe IRDK24 features a generous 610 mm aperture paired with an f\/6.5 focal ratio, enhancing its ability to capture light effectively. This combination is ideal for detailed infrared observations and long-exposure imaging, providing superb light-gathering capabilities.\u003c\/p\u003e\n\u003ch2\u003eSpecialized Optical Design for Infrared\u003c\/h2\u003e\n\u003cp\u003eThe Dall-Kirkham optical design of the IRDK24 is optimized for infrared wavelengths. There are no refractive lenses, only reflective fused silica mirrors. Reflective coatings are a protected gold with better than 98% reflectivity from .65 microns (650nm) to 5 microns (5000nm), ideal for infrared astronomy or LIDAR applications. UV-optimized coatings can also be provided, so please contact our technical sales team to discuss UV optimization.\u003c\/p\u003e\n\u003ch2\u003eRobust Mechanical Structure\u003c\/h2\u003e\n\u003cp\u003eConstructed using carbon fiber, the optical tube of the IRDK24 offers durability and stability with minimal thermal expansion. This design ensures consistent performance under varying environmental conditions, making it suitable for intensive scientific applications.\u003c\/p\u003e\n\u003ch2\u003eAdvanced Thermal Management\u003c\/h2\u003e\n\u003cp\u003eThe IRDK24 incorporates cooling fans and a system ready for Delta-T applications, facilitating rapid thermal equilibrium. This setup is crucial for minimizing air turbulence within the tube, thus reducing potential image distortion and enhancing overall imaging quality.\u003c\/p\u003e\n\u003ch2\u003eIntegrated Dew Control\u003c\/h2\u003e\n\u003cp\u003eInfrared observations can be susceptible to condensation, but the IRDK24 addresses this with sophisticated dew prevention technology. Heater pads, controlled via PlaneWave’s software, ensure the optical surfaces remain clear from dew, thereby maintaining consistent and clear imaging performance.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eInfrared Astronomy:\u003c\/strong\u003e The IRDK24 is especially effective for infrared astronomy, where its large aperture and infrared-optimized optics allow for detailed observation of celestial objects in infrared light. This capability is essential for studying astrophysical phenomena invisible to the naked eye or standard optical wavelengths.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced Research and LIDAR Applications:\u003c\/strong\u003e With its specialized design and infrared optimization, the IRDK24 is a robust platform for advanced scientific research, including LIDAR.\u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture \u003c\/td\u003e\n\u003ctd\u003e610 mm (24\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e3974 mm (156\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e47% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus From Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e364.46 mm (14.349\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight \u003c\/td\u003e\n\u003ctd\u003e240 lbs (108.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e1422 mm (56\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design Performance\u003c\/td\u003e\n\u003ctd\u003e2.4-micron RMS on-axis, 4.0-micron RMS at 26 mm off-axis, 4.8-micron at 35 mm off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss with aluminum light shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"853\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"248\"\u003e\n\u003ccol width=\"605\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"19\"\u003e\n\u003ctd height=\"19\" width=\"248\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd width=\"605\"\u003e610 mm (24\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\"\u003e\n\u003ctd height=\"19\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e622 mm (24.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\"\u003e\n\u003ctd height=\"19\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate Ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\"\u003e\n\u003ctd height=\"19\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eSecondary Mirror\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"93\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"145\"\u003e280 mm (11\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eProtected Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"641\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"113\"\u003e \u003ccol width=\"528\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"80\"\u003e\n\u003ctd height=\"80\" width=\"113\"\u003eIncluded Items\u003c\/td\u003e\n\u003ctd width=\"528\"\u003eCDK24 Focus Spacer (240343-1) - This 5.539″ long spacer is installed between the backplate and the focuser to take up some of the CDK24’s extra backfocus and reduce the torque placed on the focuser mechanism. This spacer is sized such that the backfocus distance behind the focuser is 8.8″.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"60\"\u003e\n\u003ctd height=\"60\" width=\"113\"\u003e\u003c\/td\u003e\n\u003ctd width=\"528\"\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" width=\"113\"\u003e\u003c\/td\u003e\n\u003ctd width=\"528\"\u003ePrimary Mirror Cover - To protect the primary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"40\"\u003e\n\u003ctd height=\"40\" width=\"113\"\u003e\u003c\/td\u003e\n\u003ctd width=\"528\"\u003eFlashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42366011473989,"sku":"240120Q","price":139599.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveCDK24.jpg?v=1739492210"},{"product_id":"planewave-rc-20-ota","title":"Planewave RC 20 OTA","description":"\u003ch2\u003eRC20’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Ritchey-Chrétien Optics\u003c\/h3\u003e\n\u003cp\u003eThe RC20 features a purely reflective Ritchey-Chrétien optical system, which includes high-quality mirrors with enhanced coatings. This setup minimizes chromatic aberration and ensures excellent light throughput, providing superb image fidelity and contrast. This optical design shines when making observations, primarily on-axis, and wide-field imaging is not a concern.\u003c\/p\u003e\n\u003ch3\u003eMechanical Structure\u003c\/h3\u003e\n\u003cp\u003eConstructed from lightweight yet durable materials, including a dual carbon-fiber truss design, the 20-inch Ritchey-Chrétien ensures structural integrity and reduces the overall weight. This makes it easier to handle and mount on various telescope mounts.\u003c\/p\u003e\n\u003ch3\u003eThermal Management\u003c\/h3\u003e\n\u003cp\u003eEquipped with three cooling fans at the back of the telescope, the RC20 achieves thermal equilibrium quickly. This feature helps to reduce air turbulence inside the telescope tube, minimizing thermal distortions and maintaining optimal imaging conditions.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eThe large aperture and precision optics of the 20-Inch Ritchey-Chrétien enable astrophotographers to capture detailed and crisp images of celestial phenomena, making it an excellent tool for capturing faint galaxies, nebulae, and star clusters.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eWith its reliable performance and detailed imaging capabilities, the 20-inch Ritchey-Chrétien is a valuable asset for universities and research observatories that engage in complex studies such as stellar classification, photometric research, and other scientific investigations.\u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable width=\"633\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 260px;\" width=\"281\"\u003e \u003ccol style=\"width: 290px;\" width=\"352\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd width=\"281\" class=\"xl65\" height=\"23\"\u003eAperture\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e508 mm (20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e3556 mm (140\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e39% of the Primary Mirror Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eBack Focus from Racked in Focuser\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e147 mm (5.8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eWeight\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e63.5 kg (140 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e1194 mm (47\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd class=\"xl65\" height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eUpper Cage\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003eCarbon Fiber Truss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eLower Cage\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003eCarbon Fiber Truss with Carbon Fiber Light Shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSecondary Mirro\u003cmeta charset=\"UTF-8\"\u003e\n\u003c\/h3\u003e\n\u003ctable width=\"633\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"281\"\u003e \u003ccol width=\"352\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd width=\"281\" class=\"xl65\" height=\"23\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003e191mm (7.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eMaterial\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003eFused silica \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eShape\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003eHyperbolic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"23\"\u003e\n\u003ctd class=\"xl65\" height=\"23\"\u003eCoating\u003c\/td\u003e\n\u003ctd width=\"352\" class=\"xl66\"\u003eEnhanced Aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003ePrimary Mirror\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e508 mm (20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e521 mm (20.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHyperbolic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFused Silica\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Items\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWrench Set (5812A35) - Standard hex wrenches (European orders only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42373545721925,"sku":"200125Q","price":114599.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveRC20.jpg?v=1739832343"},{"product_id":"planewave-cdk300-observatory-system","title":"Planewave CDK300 Observatory System","description":"\u003cp\u003e\u003cspan\u003eThe CDK300 Observatory System from PlaneWave Instruments, an elite configuration designed specifically for the astrophotography enthusiast and serious astronomy researcher. This system combines the precision-engineered CDK12.5 optical tube assembly with the robust L-350 direct-drive mount, offering an unparalleled observational experience that excels in a wide array of applications from detailed celestial studies to advanced astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features of the CDK300 Observatory System\u003c\/h2\u003e\n\u003ch3\u003eCDK12.5 Optical Tube Assembly\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture and Focal Length\u003c\/strong\u003e: Features a 12.5-inch aperture and a 2541 mm focal length at an f\/8 focal ratio, perfect for capturing deep-sky objects with exceptional depth of field and clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Optical Design\u003c\/strong\u003e: Utilizes a Corrected Dall-Kirkham optical design, eliminating off-axis coma and astigmatism while achieving a perfectly flat field across a 52 mm image circle, ensuring sharp and detailed images across the entire field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction\u003c\/strong\u003e: The optical tube is constructed from lightweight and sturdy carbon fiber, reducing thermal expansion and allowing rapid cooling, which maintains optical alignment in varying temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Mirrors and Coatings\u003c\/strong\u003e: Equipped with rock-solid fused silica mirrors known for their low thermal expansion, along with high-quality coatings that maximize light transmission and minimize stray light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management\u003c\/strong\u003e: Incorporates a sophisticated cooling system featuring three rear cooling fans and four boundary layer fans. This setup rapidly achieves thermal equilibrium, essential for maintaining consistent imaging quality during long exposure astrophotography and reducing thermal-induced focus shifts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eL-350 Direct Drive Mount\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Drive Motors\u003c\/strong\u003e: Employs state-of-the-art direct-drive motors on each axis, providing smooth, fast, and ultra-quiet movement of the telescope with zero backlash and zero periodic error.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Encoders\u003c\/strong\u003e: Integrated high-resolution encoders offer precise positioning, essential for capturing high-quality astrophotography and conducting detailed astronomical research.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAzimuth Dovetail Balance System\u003c\/strong\u003e: Provides precise center of gravity adjustments, enhancing the stability and performance of the system in both alt-azimuth and equatorial configurations, crucial for maintaining accurate tracking and reducing strain on the mount during extended observations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAzimuth Dovetail Balance System\u003c\/strong\u003e: Provides precise center of gravity adjustments, enhancing the stability and performance of the system in both alt-azimuth and equatorial configurations, crucial for maintaining accurate tracking and reducing strain on the mount during extended observations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Target Acquisition\u003c\/strong\u003e: Equipped with direct-drive motors capable of slew speeds up to 50 degrees per second, enabling quick and efficient targeting of celestial objects and satellites, crucial for dynamic observations and time-sensitive astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eApplication-Specific Advantages\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eThe CDK300 system is a powerhouse for astrophotographers, providing exceptional tracking accuracy and image stability which allow for capturing breathtaking celestial images with intricate details and vibrant colors.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eResearchers will find the CDK300 invaluable for its consistent performance and precise data collection capabilities. Ideal for photometry, spectroscopy, and minor planet tracking, it serves as a reliable platform for scientific exploration and discovery.\u003c\/p\u003e\n\u003ch3\u003eVisual Observations\u003c\/h3\u003e\n\u003cp\u003eFor those who enjoy visual astronomy, the CDK300 offers vibrant and detailed views of the cosmos. Its large aperture and high-quality optical components make it perfect for viewing planetary, lunar, and deep-sky objects, enriching every observational session.\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eWith its swift and precise repositioning capabilities, the L-350 mount in the CDK300 system is capable of tracking satellites and space debris. However, it's important to note that while the L-series mounts are highly effective for astrophotography and research applications, they might not meet the optimal performance standards required for dedicated SSA\/SDA operations. For those needs, we recommend exploring our T-600 Direct-Drive Gimbal, specifically engineered to exceed the demanding requirements for SSA\/SDA applications, ensuring superior tracking and responsiveness in monitoring and cataloging space objects.\u003c\/p\u003e\n\u003ch3\u003eMount System\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Weight\u003c\/td\u003e\n\u003ctd\u003e50kg (110 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Load Capacity\u003c\/td\u003e\n\u003ctd\u003e45 kg (100 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLatitude Range\u003c\/td\u003e\n\u003ctd\u003e0 to 90 degrees, Northern and Southern hemispheres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Management\u003c\/td\u003e\n\u003ctd\u003eEquipment cables can be wired through mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eControl System\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Electronics\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface dual axis telescope control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHoming Sensors\u003c\/td\u003e\n\u003ctd\u003eHome position sensors are included allowing the mount to find its home position on power up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlew Rate\u003c\/td\u003e\n\u003ctd\u003e20 degrees per second (standard); 50 degrees per second (maximum), both axes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eAccepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable style=\"width: 99.90458%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 49.067876%;\"\u003eAperture\u003c\/td\u003e\n\u003ctd style=\"width: 49.97654%;\"\u003e318 mm (12.5 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 49.067876%;\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd style=\"width: 49.97654%;\"\u003e100.04 inch (2541 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 49.067876%;\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd style=\"width: 49.97654%;\"\u003ef\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 49.067876%;\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd style=\"width: 49.97654%;\"\u003e42% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 49.067876%;\"\u003eBackfocus from Mounting Surface\u003c\/td\u003e\n\u003ctd style=\"width: 49.97654%;\"\u003e265 mm (10.445 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 49.067876%;\"\u003eBackfocus from Racked in Focuser\u003c\/td\u003e\n\u003ctd style=\"width: 49.97654%;\"\u003e183 mm (7.2 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 49.067876%;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"width: 49.97654%;\"\u003e19 kg (42 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 49.067876%;\"\u003eOptimal Field of View\u003c\/td\u003e\n\u003ctd style=\"width: 49.97654%;\"\u003e52 mm image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eMechanical Structure\u003c\/h3\u003e\n\u003ctable style=\"width: 99.90458%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 37.800438%;\"\u003e\u003cstrong\u003eFork Assembly\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 61.243978%;\"\u003eL-350 Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 37.800438%;\"\u003e\u003cstrong\u003eFork Base\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 61.243978%;\"\u003eWelded stainless steel torsion box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 37.800438%;\"\u003e\u003cstrong\u003eOptical Tube\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 61.243978%;\"\u003eCarbon fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 37.800438%;\"\u003e\u003cstrong\u003eInstrument Payload\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 61.243978%;\"\u003e45 kg (101 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMotion Control\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd\u003eDirect Drive 3 Phase Axial-Flux Torque Motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEncoder – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd\u003e152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Torque\u003c\/td\u003e\n\u003ctd\u003eApproximately 20 ft-lbs continuous; 50 ft-lbs peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Electronics\u003c\/td\u003e\n\u003ctd\u003eIndustrial grade, off-the-shelf brushless motor drives for each axis with custom-designed interface card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Control Software\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface (PWI4). Incorporates PointXP mount modeling software by Dave Rowe. Provides HTTP and ASCOM control interfaces. MaxIm DL is required for camera control when building a pointing model within our PWI4 software.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIncluded Items\u003c\/h3\u003e\n\u003ctable style=\"width: 99.90458%; height: 309.32066px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.130436px;\"\u003e\n\u003ctd style=\"width: 99.226149%;\"\u003eHeating elements for dew prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.592392px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 19.592392px;\"\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 57.391304px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 57.391304px;\"\u003eFlash drive - Contains PWI4 software for mount control, instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 57.391304px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 57.391304px;\"\u003eHardware - Six 3\/8-16 x 1\/4″ socket head cap screws to bolt the mount to the pier, or wedge; Six 3\/8-16 x 1\/4″ washers; One extended length shoulder bolt for RA axis to EQ wedge alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.592392px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 19.592392px;\"\u003eOne 16′ USB cable - To connect the mount to the observatory control computer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.592392px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 19.592392px;\"\u003eOne 120VAC power cable - To provide power to the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.592392px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 19.592392px;\"\u003eStandard Allen Key set - For tightening bolts used on the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.592392px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 19.592392px;\"\u003eGamepad - Used for control of the mount tracking speeds for visual observing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38.260872px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 38.260872px;\"\u003eKeller EZ-Saddle (600182) - The Keller EZ saddle comes standard with the L-350 mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.592392px;\"\u003e\n\u003ctd style=\"width: 99.226149%; height: 19.592392px;\"\u003eOne 16′ USB cable - To connect the mount to the observatory control computer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42383256453189,"sku":"125130Q","price":53499.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveCDK300system.jpg?v=1740007827"},{"product_id":"planewave-cdk350-observatory-system","title":"Planewave CDK350 Observatory System","description":"\u003cp\u003eThe CDK350 Observatory System from PlaneWave Instruments is a premium setup designed for the astrophotography aficionado and the dedicated astronomy researcher. This system marries the high-performing CDK14 optical tube assembly with the robust L-350 direct-drive mount, creating an unmatched observational platform that excels across a spectrum of applications, from deep celestial studies to sophisticated astrophotography\u003c\/p\u003e\n\u003ch2\u003eKey Features of the CDK350 Observatory System\u003c\/h2\u003e\n\u003ch3\u003eCDK14 Optical Tube Assembly\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAperture and Focal Length: Boasts a 14-inch aperture and a 2563 mm focal length at an f\/7.2 focal ratio, ideal for capturing wide-field views of the cosmos with incredible depth and clarity.\u003c\/li\u003e\n\u003cli\u003eAdvanced Optical Design: Features a Corrected Dall-Kirkham optical design, providing a field free of off-axis coma and astigmatism while achieving a perfectly flat field across a 70 mm image circle, ensuring critically sharp images throughout the entire field.\u003c\/li\u003e\n\u003cli\u003eHigh-Quality Construction: Constructed from lightweight yet durable carbon fiber, minimizing thermal expansion and allowing for rapid thermal equilibration, which helps maintain optical precision in fluctuating temperatures.\u003c\/li\u003e\n\u003cli\u003eSuperior Mirrors and Coatings: Fitted with rock-solid fused silica mirrors known for their minimal thermal expansion, paired with premium coatings that enhance light throughput while minimizing stray light for optimal image quality.\u003c\/li\u003e\n\u003cli\u003eThermal Management: Integrates an advanced cooling system with multiple fans that promote rapid thermal stabilization, essential for maintaining consistent high-quality imaging during lengthy exposures and minimizing focus shifts caused by temperature variations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eL-350 Direct Drive Mount\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect Drive Motors: Features sophisticated direct-drive motors on each axis, ensuring smooth, swift, and near-silent movement of the telescope with zero backlash and zero periodic error, perfect for both tracking celestial objects and quick repositioning.\u003c\/li\u003e\n\u003cli\u003eHigh-Resolution Encoders: Comes equipped with high-resolution optical encoders on both axes, delivering precise positioning and movement, which is critical for high-quality astrophotography and detailed celestial research.\u003c\/li\u003e\n\u003cli\u003eAzimuth Dovetail Balance System: Includes a finely adjustable balance system that enhances the stability and performance of the setup in both alt-azimuth and equatorial configurations, critical for sustained accurate tracking and easing the strain on the mount during prolonged observations.\u003c\/li\u003e\n\u003cli\u003eRapid Target Acquisition: Boasts direct-drive motors capable of impressive slew speeds up to 50 degrees per second, allowing for quick and efficient targeting of celestial objects and satellites, vital for dynamic observations and responsive astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplication-Specific Advantages\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eThe CDK350 is a powerhouse for astrophotographers, offering exceptional tracking accuracy and image stability which facilitate capturing breathtaking celestial images with intricate details and vibrant colors.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eResearchers will find the CDK350 invaluable for its consistent performance and precise data collection capabilities. It serves as a reliable platform for photometry, spectroscopy, and minor planet tracking, providing a robust foundation for scientific exploration and discovery.\u003c\/p\u003e\n\u003ch3\u003eVisual Observations\u003c\/h3\u003e\n\u003cp\u003eFor enthusiasts of visual astronomy, the CDK350 delivers vibrant and detailed views of the universe. Its substantial aperture and high-quality optical components ensure superb viewing of planetary, lunar, and deep-sky objects, enhancing every observational session.\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eWith its swift and precise repositioning capabilities, the L-350 mount in the CDK350 system is capable of tracking satellites and space debris. However, it's important to note that while the L-series mounts are highly effective for astrophotography and research applications, they might not meet the optimal performance standards required for dedicated SSA\/SDA operations. For those needs, we recommend exploring our T-600 Direct-Drive Gimbal, specifically engineered to exceed the demanding requirements for SSA\/SDA applications, ensuring superior tracking and responsiveness in monitoring and cataloging space objects.\u003c\/p\u003e\n\u003ch3\u003eMount System\u003c\/h3\u003e\n\u003ctable style=\"width: 99.90458%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.533%;\"\u003eMount Weight\u003c\/td\u003e\n\u003ctd style=\"width: 72.329684%;\"\u003e50kg (110 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.533%;\"\u003eMax. Load Capacity\u003c\/td\u003e\n\u003ctd style=\"width: 72.329684%;\"\u003e45 kg (100 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.533%;\"\u003eLatitude Range\u003c\/td\u003e\n\u003ctd style=\"width: 72.329684%;\"\u003e0 to 90 degrees, Northern and Southern hemispheres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.533%;\"\u003eCable Management\u003c\/td\u003e\n\u003ctd style=\"width: 72.329684%;\"\u003eEquipment cables can be wired through mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eControl system\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Electronics\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface dual axis telescope control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHoming Sensors\u003c\/td\u003e\n\u003ctd\u003eHome position sensors are included allowing the mount to find its home position on power up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlew Rate\u003c\/td\u003e\n\u003ctd\u003e20 degrees per second (standard); 50 degrees per second (maximum), both axes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eAccepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAperture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e356mm (14\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2563 mm (101\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ef\/7.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCentral Obstruction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23.5% by surface area; 48.5% of the Primary Mirror Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBack Focus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e282 mm (11.09\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22 kg (48 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptimal Field of View\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52 mm Image Circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMechanical Structure\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFork Assembly\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eL-350 Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFork Base\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWelded stainless steel torsion box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Tube\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber truss and light shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstrument Payload\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 kg (100 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMotion control\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor – Azimuth and Altitude\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect Drive 3 Phase Axial-Flux Torque Motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEncoder – Azimuth and Altitude\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 20 ft-lbs continuous; 50 ft-lbs peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive Electronics\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTelescope Control Software\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface (PWI4). Incorporates PointXP mount modeling software by Dave Rowe. Provides HTTP and ASCOM control interfaces. MaxIm DL is required for camera control when building a pointing model within our PWI4 software.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIncluded items \u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeating elements for dew prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlash drive -Contains PWI4 software for mount control , instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware - Six 3\/8-16 x 1\/4″ socket head cap screws to bolt the mount to the pier, or wedge; Six 3\/8-16 x 1\/4″ washers; One extended length shoulder bolt for RA axis to EQ wedge alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOne 16′ USB cable - To connect the mount to the observatory control computer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOne 120VAC power cable - To provide power to the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Allen Key set - For tightening bolts used on the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGamepad - Used for control of the mount tracking speeds for visual observing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeller EZ-Saddle (600182) - The Keller EZ saddle comes standard with the L-350 mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42383295545413,"sku":"140130Q","price":61199.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/PlanewaveCDK350telescopesystem.jpg?v=1740009353"},{"product_id":"celestron-rasa-6-rowe-ackermann-schmidt-astrograph-ota","title":"Celestron RASA 6 Rowe-Ackermann Schmidt Astrograph OTA","description":"\u003cstyle\u003e\n  .celestron-rasa6-page * , .celestron-rasa6-page *::before , .celestron-rasa6-page *::after {\n    box-sizing: border-box;\n    margin: 0;\n    padding: 0;\n  }\n\n  .celestron-rasa6-page {\n    --cr-black:      #000000;\n    --cr-ink:        #1D1D1F;\n    --cr-paper:      #F5F5F7;\n    --cr-white:      #FFFFFF;\n    --cr-mute:       #86868B;\n    --cr-line:       #D2D2D7;\n    --cr-link:       #06C;\n    --cr-accent:     #F37220;\n    --cr-radius:     22px;\n    --cr-radius-lg:  28px;\n\n    font-family: -apple-system, BlinkMacSystemFont, \"SF Pro Display\", \"SF Pro\", \"Helvetica Neue\", 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.cr-stats {\n    background: var(--cr-paper);\n    padding: 90px 0;\n  }\n  .celestron-rasa6-page .cr-stats-grid {\n    display: grid;\n    grid-template-columns: repeat(4, 1fr);\n    gap: 36px;\n    text-align: center;\n  }\n  .celestron-rasa6-page .cr-stat-num {\n    font-size: clamp(48px, 5vw, 80px);\n    font-weight: 600;\n    line-height: 1;\n    letter-spacing: -0.03em;\n    color: var(--cr-ink);\n    margin-bottom: 10px;\n  }\n  .celestron-rasa6-page .cr-stat-lbl {\n    font-size: 15px;\n    font-weight: 400;\n    color: var(--cr-mute);\n    letter-spacing: -0.005em;\n  }\n  .celestron-rasa6-page .cr-stat-cap {\n    font-size: 13px;\n    color: var(--cr-mute);\n    margin-top: 4px;\n    line-height: 1.4;\n  }\n\n  .celestron-rasa6-page .cr-pullquote {\n    text-align: center;\n    padding: 140px 22px;\n    background: var(--cr-white);\n    color: var(--cr-ink);\n  }\n  .celestron-rasa6-page .cr-pullquote p {\n    font-size: clamp(28px, 3.4vw, 48px);\n    font-weight: 600;\n    line-height: 1.15;\n    letter-spacing: -0.018em;\n    max-width: 920px;\n    margin: 0 auto;\n  }\n  .celestron-rasa6-page .cr-pullquote p .cr-mute-text {\n    color: var(--cr-mute);\n  }\n\n  .celestron-rasa6-page .cr-split-block {\n    padding: 110px 0;\n  }\n  .celestron-rasa6-page .cr-split-block .cr-split-grid {\n    display: grid;\n    grid-template-columns: 1fr 1fr;\n    gap: 80px;\n    align-items: center;\n    max-width: 1080px;\n    margin: 0 auto;\n  }\n  .celestron-rasa6-page .cr-split-block.cr-reverse .cr-split-grid \u003e div:first-child {\n    order: 2;\n  }\n  .celestron-rasa6-page .cr-split-block .cr-split-text {\n    text-align: left;\n  }\n  .celestron-rasa6-page .cr-split-block .cr-split-text .cr-eyebrow {\n    font-size: 13px;\n    font-weight: 600;\n    letter-spacing: 0.04em;\n    text-transform: uppercase;\n    color: var(--cr-mute);\n    margin-bottom: 14px;\n  }\n  .celestron-rasa6-page .cr-on-dark .cr-split-block .cr-split-text .cr-eyebrow {\n    color: #A1A1A6;\n  }\n  .celestron-rasa6-page .cr-split-block .cr-split-text h2 {\n    font-size: clamp(28px, 3vw, 40px);\n    font-weight: 600;\n    line-height: 1.12;\n    letter-spacing: -0.018em;\n    margin: 0 0 20px;\n    text-align: left;\n    max-width: none;\n    color: inherit;\n  }\n  .celestron-rasa6-page .cr-split-block .cr-split-text p {\n    font-size: 17px;\n    line-height: 1.55;\n    color: var(--cr-mute);\n    max-width: 460px;\n    margin-bottom: 14px;\n  }\n  .celestron-rasa6-page .cr-on-dark .cr-split-block .cr-split-text p {\n    color: #A1A1A6;\n  }\n  .celestron-rasa6-page .cr-split-block .cr-split-img {\n    border-radius: var(--cr-radius);\n    overflow: hidden;\n    background: var(--cr-paper);\n    max-width: 540px;\n    margin: 0 auto;\n  }\n  .celestron-rasa6-page .cr-on-dark .cr-split-block .cr-split-img {\n    background: #1D1D1F;\n  }\n  .celestron-rasa6-page .cr-split-block .cr-split-img img {\n    width: 100%;\n    height: auto;\n    display: block;\n  }\n  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clamp(44px, 4vw, 64px);\n    font-weight: 600;\n    line-height: 1;\n    letter-spacing: -0.03em;\n    color: var(--cr-ink);\n    display: block;\n    margin-bottom: 8px;\n  }\n  .celestron-rasa6-page .cr-on-dark .cr-big-num {\n    color: var(--cr-white);\n  }\n  .celestron-rasa6-page .cr-big-unit {\n    font-size: 14px;\n    color: var(--cr-mute);\n    letter-spacing: -0.005em;\n  }\n\n  .celestron-rasa6-page .cr-bento {\n    display: grid;\n    grid-template-columns: repeat(6, 1fr);\n    gap: 16px;\n    text-align: left;\n    margin-top: 16px;\n  }\n  .celestron-rasa6-page .cr-bento-card {\n    background: var(--cr-white);\n    border-radius: var(--cr-radius-lg);\n    padding: 44px;\n    overflow: hidden;\n    position: relative;\n    min-height: 320px;\n    display: flex;\n    flex-direction: column;\n    justify-content: flex-end;\n    transition: transform 0.4s ease;\n  }\n  .celestron-rasa6-page .cr-on-dark .cr-bento-card {\n    background: #1D1D1F;\n  }\n  .celestron-rasa6-page .cr-bento-card:hover {\n    transform: translateY(-2px);\n  }\n  .celestron-rasa6-page .cr-bento-card.cr-span-3 { grid-column: span 3; }\n  .celestron-rasa6-page .cr-bento-card.cr-span-2 { grid-column: span 2; }\n  .celestron-rasa6-page .cr-bento-card.cr-span-4 { grid-column: span 4; min-height: 380px; }\n  .celestron-rasa6-page .cr-bento-card.cr-span-6 { grid-column: span 6; }\n\n  .celestron-rasa6-page .cr-bento-card .cr-bento-eyebrow {\n    font-size: 13px;\n    font-weight: 600;\n    letter-spacing: 0.04em;\n    text-transform: uppercase;\n    color: var(--cr-mute);\n    margin-bottom: 14px;\n  }\n  .celestron-rasa6-page .cr-on-dark .cr-bento-card .cr-bento-eyebrow {\n    color: #A1A1A6;\n  }\n  .celestron-rasa6-page .cr-bento-card h3 {\n    font-size: clamp(22px, 2.2vw, 32px);\n    font-weight: 600;\n    line-height: 1.12;\n    letter-spacing: -0.014em;\n    margin-bottom: 12px;\n    color: inherit;\n  }\n  .celestron-rasa6-page .cr-bento-card p {\n    font-size: 15px;\n    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var(--cr-black);\n    color: var(--cr-white);\n    text-align: center;\n    padding: 100px 22px 60px;\n  }\n  .celestron-rasa6-page .cr-cinema-cap .cr-eyebrow {\n    color: #A1A1A6;\n    font-size: 13px;\n    font-weight: 600;\n    letter-spacing: 0.04em;\n    text-transform: uppercase;\n    margin-bottom: 14px;\n  }\n  .celestron-rasa6-page .cr-cinema-cap h2 {\n    font-size: clamp(34px, 4vw, 56px);\n    font-weight: 600;\n    line-height: 1.07;\n    letter-spacing: -0.022em;\n    color: var(--cr-white);\n    margin-bottom: 18px;\n    max-width: 720px;\n    margin-left: auto;\n    margin-right: auto;\n  }\n  .celestron-rasa6-page .cr-cinema-cap h2 .cr-mute-text {\n    color: #6E6E73;\n  }\n  .celestron-rasa6-page .cr-cinema-cap p {\n    font-size: 17px;\n    color: #A1A1A6;\n    max-width: 640px;\n    margin: 0 auto 26px;\n    line-height: 1.55;\n  }\n  .celestron-rasa6-page .cr-cinema-meta {\n    display: flex;\n    justify-content: center;\n    gap: 24px 36px;\n    flex-wrap: wrap;\n    margin-top: 8px;\n  }\n  .celestron-rasa6-page .cr-cinema-meta-item {\n    display: inline-flex;\n    align-items: center;\n    gap: 8px;\n    font-size: 13px;\n    color: #A1A1A6;\n    font-weight: 500;\n    letter-spacing: -0.005em;\n  }\n  .celestron-rasa6-page .cr-cinema-meta-item svg {\n    width: 16px;\n    height: 16px;\n    color: var(--cr-white);\n    flex-shrink: 0;\n  }\n\n  .celestron-rasa6-page .cr-gallery {\n    background: var(--cr-paper);\n    padding: 120px 0;\n  }\n  .celestron-rasa6-page .cr-gallery-head {\n    text-align: center;\n    margin-bottom: 60px;\n  }\n  .celestron-rasa6-page .cr-gallery-head h2 {\n    font-size: clamp(36px, 4vw, 56px);\n    font-weight: 600;\n    line-height: 1.08;\n    letter-spacing: -0.022em;\n    color: var(--cr-ink);\n    margin: 0 auto 14px;\n    max-width: 780px;\n  }\n  .celestron-rasa6-page .cr-gallery-head h2 .cr-mute-text {\n    color: var(--cr-mute);\n  }\n  .celestron-rasa6-page .cr-gallery-head p {\n    font-size: 19px;\n    color: var(--cr-mute);\n    max-width: 600px;\n    margin: 0 auto;\n    line-height: 1.45;\n  }\n  .celestron-rasa6-page .cr-gallery-grid {\n    display: grid;\n    grid-template-columns: 1.6fr 1fr;\n    gap: 16px;\n    max-width: 1180px;\n    margin: 0 auto;\n    padding: 0 22px;\n  }\n  .celestron-rasa6-page .cr-gallery-main,\n  .celestron-rasa6-page .cr-gallery-side {\n    border-radius: var(--cr-radius);\n    overflow: hidden;\n    background: var(--cr-black);\n    position: relative;\n  }\n  .celestron-rasa6-page .cr-gallery-main {\n    grid-row: span 2;\n  }\n  .celestron-rasa6-page .cr-gallery-main img,\n  .celestron-rasa6-page .cr-gallery-side img {\n    width: 100%;\n    height: 100%;\n    object-fit: cover;\n    display: block;\n    transition: transform 0.6s ease;\n  }\n  .celestron-rasa6-page .cr-gallery-main:hover img,\n  .celestron-rasa6-page .cr-gallery-side:hover img {\n    transform: scale(1.04);\n  }\n  .celestron-rasa6-page .cr-gallery-cap {\n    position: absolute;\n    bottom: 0;\n    left: 0;\n    right: 0;\n    padding: 36px 24px 22px;\n    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, transparent 100%);\n    color: var(--cr-white);\n  }\n  .celestron-rasa6-page .cr-gallery-cap strong {\n    display: block;\n    font-size: 16px;\n    font-weight: 600;\n    margin-bottom: 4px;\n  }\n  .celestron-rasa6-page .cr-gallery-cap span {\n    font-size: 12px;\n    color: rgba(255,255,255,0.65);\n  }\n  .celestron-rasa6-page .cr-gallery-side {\n    min-height: 280px;\n  }\n\n  .celestron-rasa6-page .cr-highlights {\n    background: var(--cr-white);\n    padding: 110px 22px;\n  }\n  .celestron-rasa6-page .cr-highlights-inner {\n    max-width: 1080px;\n    margin: 0 auto;\n  }\n  .celestron-rasa6-page .cr-highlights-head {\n    text-align: center;\n    margin-bottom: 60px;\n  }\n  .celestron-rasa6-page .cr-highlights-head h2 {\n    font-size: clamp(36px, 4vw, 56px);\n    font-weight: 600;\n    line-height: 1.08;\n    letter-spacing: -0.022em;\n    color: var(--cr-ink);\n    margin: 0 auto 14px;\n    max-width: 720px;\n  }\n  .celestron-rasa6-page .cr-highlights-head p {\n    font-size: 19px;\n    color: var(--cr-mute);\n    max-width: 600px;\n    margin: 0 auto;\n    line-height: 1.45;\n  }\n  .celestron-rasa6-page .cr-highlights-grid {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 28px 60px;\n  }\n  .celestron-rasa6-page .cr-highlight-item {\n    display: flex;\n    gap: 14px;\n    align-items: flex-start;\n  }\n  .celestron-rasa6-page .cr-highlight-item .cr-tick {\n    width: 22px;\n    height: 22px;\n    color: var(--cr-ink);\n    flex-shrink: 0;\n    margin-top: 2px;\n  }\n  .celestron-rasa6-page .cr-highlight-item p {\n    font-size: 17px;\n    line-height: 1.45;\n    color: var(--cr-ink);\n    margin: 0;\n  }\n\n  .celestron-rasa6-page .cr-specs-section {\n    padding: 120px 0;\n    background: var(--cr-paper);\n  }\n  .celestron-rasa6-page .cr-specs-section h2 {\n    text-align: center;\n    font-size: clamp(40px, 5vw, 64px);\n    font-weight: 600;\n    line-height: 1.08;\n    letter-spacing: -0.022em;\n    color: var(--cr-ink);\n    margin-bottom: 18px;\n  }\n  .celestron-rasa6-page .cr-specs-section .cr-lead {\n    text-align: center;\n    color: var(--cr-mute);\n    margin-bottom: 70px;\n    font-size: 19px;\n    max-width: 600px;\n    margin-left: auto;\n    margin-right: auto;\n  }\n  .celestron-rasa6-page .cr-specs-table {\n    width: 100%;\n    border-collapse: collapse;\n    max-width: 980px;\n    margin: 0 auto;\n    font-size: 17px;\n  }\n  .celestron-rasa6-page .cr-specs-table tbody td {\n    padding: 18px 18px 18px 0;\n    border-bottom: 1px solid var(--cr-line);\n    font-weight: 400;\n    color: var(--cr-ink);\n    vertical-align: top;\n  }\n  .celestron-rasa6-page .cr-specs-table tbody td:first-child {\n    color: var(--cr-mute);\n    width: 40%;\n  }\n  .celestron-rasa6-page .cr-specs-table .cr-specs-cat td {\n    padding: 36px 0 14px;\n    font-size: 13px;\n    font-weight: 600;\n    letter-spacing: 0.04em;\n    text-transform: uppercase;\n    color: var(--cr-ink);\n    border-bottom: none;\n  }\n  .celestron-rasa6-page .cr-specs-table tbody tr:last-child td {\n    border-bottom: none;\n  }\n\n  .celestron-rasa6-page .cr-closing {\n    background: var(--cr-paper);\n    text-align: center;\n    padding: 140px 22px;\n  }\n  .celestron-rasa6-page .cr-closing h2 {\n    font-size: clamp(36px, 4.5vw, 64px);\n    font-weight: 600;\n    line-height: 1.08;\n    letter-spacing: -0.022em;\n    color: var(--cr-ink);\n    margin: 0 auto 22px;\n    max-width: 880px;\n  }\n  .celestron-rasa6-page .cr-closing h2 .cr-mute-text {\n    color: var(--cr-mute);\n  }\n  .celestron-rasa6-page .cr-closing p {\n    font-size: clamp(19px, 1.5vw, 22px);\n    color: var(--cr-mute);\n    max-width: 640px;\n    margin: 0 auto 40px;\n    line-height: 1.45;\n  }\n  .celestron-rasa6-page .cr-perks {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 36px;\n    justify-content: center;\n    margin-top: 14px;\n  }\n  .celestron-rasa6-page .cr-perk {\n    display: inline-flex;\n    align-items: center;\n    gap: 8px;\n    color: var(--cr-ink);\n    font-size: 15px;\n    font-weight: 500;\n    letter-spacing: -0.005em;\n  }\n  .celestron-rasa6-page .cr-perk svg {\n    width: 16px;\n    height: 16px;\n    color: var(--cr-ink);\n    flex-shrink: 0;\n  }\n\n  @media (max-width: 1024px) {\n    .celestron-rasa6-page .cr-bento { grid-template-columns: repeat(2, 1fr); }\n    .celestron-rasa6-page .cr-bento-card.cr-span-3,\n    .celestron-rasa6-page .cr-bento-card.cr-span-2,\n    .celestron-rasa6-page .cr-bento-card.cr-span-4,\n    .celestron-rasa6-page .cr-bento-card.cr-span-6 { grid-column: span 2; }\n    .celestron-rasa6-page .cr-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 60px 36px; }\n    .celestron-rasa6-page .cr-gallery-grid { grid-template-columns: 1fr 1fr; }\n    .celestron-rasa6-page .cr-gallery-main { grid-row: span 1; }\n  }\n  @media (max-width: 900px) {\n    .celestron-rasa6-page .cr-split-block .cr-split-grid { grid-template-columns: 1fr; gap: 40px; max-width: 540px; }\n    .celestron-rasa6-page .cr-split-block.cr-reverse .cr-split-grid \u003e div:first-child { order: 0; }\n    .celestron-rasa6-page .cr-split-block .cr-split-text { text-align: center; }\n    .celestron-rasa6-page .cr-split-block .cr-split-text h2 { text-align: center; }\n    .celestron-rasa6-page .cr-split-block .cr-split-text p { margin-left: auto; margin-right: auto; }\n    .celestron-rasa6-page .cr-check-list { margin-left: auto; margin-right: auto; max-width: 460px; text-align: left; }\n    .celestron-rasa6-page .cr-big-stat { margin-left: auto; margin-right: auto; text-align: center; }\n  }\n  @media (max-width: 700px) {\n    .celestron-rasa6-page .cr-highlights-grid { grid-template-columns: 1fr; gap: 22px; }\n    .celestron-rasa6-page .cr-gallery-grid { grid-template-columns: 1fr; }\n  }\n  @media (max-width: 640px) {\n    .celestron-rasa6-page .cr-section,\n    .celestron-rasa6-page .cr-split-block,\n    .celestron-rasa6-page .cr-specs-section,\n    .celestron-rasa6-page .cr-closing,\n    .celestron-rasa6-page .cr-pullquote,\n    .celestron-rasa6-page .cr-highlights,\n    .celestron-rasa6-page .cr-gallery { padding-left: 22px; padding-right: 22px; padding-top: 80px; padding-bottom: 80px; }\n    .celestron-rasa6-page .cr-stats { padding: 60px 22px; }\n    .celestron-rasa6-page .cr-stats-grid { grid-template-columns: 1fr; gap: 50px; }\n    .celestron-rasa6-page .cr-bento { grid-template-columns: 1fr; gap: 14px; }\n    .celestron-rasa6-page .cr-bento-card.cr-span-3,\n    .celestron-rasa6-page .cr-bento-card.cr-span-2,\n    .celestron-rasa6-page .cr-bento-card.cr-span-4,\n    .celestron-rasa6-page .cr-bento-card.cr-span-6 { grid-column: span 1; }\n    .celestron-rasa6-page .cr-bento-card { padding: 28px; min-height: 220px; }\n    .celestron-rasa6-page .cr-hero { padding: 80px 22px 70px; }\n    .celestron-rasa6-page .cr-hero .cr-link-row { flex-direction: column; gap: 8px; align-items: center; margin-bottom: 40px; }\n    .celestron-rasa6-page .cr-perks { gap: 16px 24px; }\n    .celestron-rasa6-page .cr-cinema-cap { padding: 70px 22px 40px; }\n    .celestron-rasa6-page .cr-specs-table { font-size: 15px; }\n    .celestron-rasa6-page .cr-specs-table tbody td { padding: 14px 10px 14px 0; font-size: 15px; }\n    .celestron-rasa6-page .cr-specs-table tbody td:first-child { width: 46%; padding-right: 8px; }\n    .celestron-rasa6-page .cr-pullquote p { padding: 0 6px; }\n    .celestron-rasa6-page .cr-closing p { font-size: 17px; }\n    .celestron-rasa6-page .cr-highlights-head { margin-bottom: 40px; }\n  }\n\n  @media (max-width: 380px) {\n    .celestron-rasa6-page .cr-hero h2.cr-hero-headline { font-size: clamp(42px, 13vw, 56px); }\n    .celestron-rasa6-page .cr-hero .cr-eyebrow { font-size: 17px; }\n    .celestron-rasa6-page .cr-hero .cr-hero-sub { font-size: 17px; }\n    .celestron-rasa6-page .cr-section h2,\n    .celestron-rasa6-page .cr-closing h2,\n    .celestron-rasa6-page .cr-highlights-head h2,\n    .celestron-rasa6-page .cr-gallery-head h2,\n    .celestron-rasa6-page .cr-cinema-cap h2,\n    .celestron-rasa6-page .cr-specs-section h2 { font-size: clamp(28px, 8vw, 38px); }\n    .celestron-rasa6-page .cr-pullquote p { font-size: 22px; line-height: 1.2; }\n    .celestron-rasa6-page .cr-bento-card .cr-big-number { font-size: 64px; }\n    .celestron-rasa6-page .cr-bento-card h3 { font-size: 20px; }\n    .celestron-rasa6-page .cr-stat-num { font-size: 44px; }\n    .celestron-rasa6-page .cr-specs-table tbody td { padding: 12px 6px 12px 0; font-size: 13.5px; }\n    .celestron-rasa6-page .cr-specs-table tbody td:first-child { width: 48%; }\n    .celestron-rasa6-page .cr-highlight-item p { font-size: 15.5px; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"celestron-rasa6-page\"\u003e\n\n  \u003csection class=\"cr-hero cr-on-dark\"\u003e\n    \u003cspan class=\"cr-eyebrow\"\u003eCelestron RASA 6\u003c\/span\u003e\n    \u003ch2 class=\"cr-hero-headline\"\u003eThe night sky, \u003cem\u003eat f\/2.2\u003c\/em\u003e.\u003c\/h2\u003e\n    \u003cp class=\"cr-hero-sub\"\u003eThe smallest Rowe-Ackermann Schmidt Astrograph ever built. Ultra-fast prime-focus optics, sub-arcsecond resolution and 3.8 kg of grab-and-go portability for serious deep-sky astrophotography, anywhere.\u003c\/p\u003e\n    \u003cdiv class=\"cr-link-row\"\u003e\n      \u003ca href=\"#cr-features\" class=\"cr-link\"\u003eDiscover the design\n        \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003c\/a\u003e\n      \u003ca href=\"#cr-specs\" class=\"cr-link\"\u003eView specifications\n        \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-stats\"\u003e\n    \u003cdiv class=\"cr-container\"\u003e\n      \u003cdiv class=\"cr-stats-grid\"\u003e\n        \u003cdiv\u003e\n          \u003cdiv class=\"cr-stat-num\"\u003ef\/2.2\u003c\/div\u003e\n          \u003cdiv class=\"cr-stat-lbl\"\u003eFocal ratio\u003c\/div\u003e\n          \u003cdiv class=\"cr-stat-cap\"\u003eUltra-fast prime-focus optics\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv\u003e\n          \u003cdiv class=\"cr-stat-num\"\u003e152mm\u003c\/div\u003e\n          \u003cdiv class=\"cr-stat-lbl\"\u003eAperture\u003c\/div\u003e\n          \u003cdiv class=\"cr-stat-cap\"\u003e5.98″ clear aperture\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv\u003e\n          \u003cdiv class=\"cr-stat-num\"\u003e3.76°\u003c\/div\u003e\n          \u003cdiv class=\"cr-stat-lbl\"\u003eUseable field\u003c\/div\u003e\n          \u003cdiv class=\"cr-stat-cap\"\u003e22 mm sensor diagonal\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv\u003e\n          \u003cdiv class=\"cr-stat-num\"\u003e3.8kg\u003c\/div\u003e\n          \u003cdiv class=\"cr-stat-lbl\"\u003eTube weight\u003c\/div\u003e\n          \u003cdiv class=\"cr-stat-cap\"\u003eCG-5 dovetail, grab-and-go\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-pullquote\"\u003e\n    \u003cdiv class=\"cr-container\"\u003e\n      \u003cp\u003eProfessional optics. \u003cspan class=\"cr-mute-text\"\u003eIn a body you can carry with one hand.\u003c\/span\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-split-block\"\u003e\n    \u003cdiv class=\"cr-container-wide\"\u003e\n      \u003cdiv class=\"cr-split-grid\"\u003e\n        \u003cdiv class=\"cr-split-text\"\u003e\n          \u003cspan class=\"cr-eyebrow\"\u003eOptical Design\u003c\/span\u003e\n          \u003ch2\u003ePatented Rowe-Ackermann Schmidt architecture.\u003c\/h2\u003e\n          \u003cp\u003eThe RASA places the camera at prime focus, the same position used by professional wide-field survey telescopes. No secondary mirror, no Barlow, no lost light. More photons reach your sensor, in less time.\u003c\/p\u003e\n          \u003cp\u003eSince RASA technology debuted in 2014, defence contractors, professional researchers and governments have relied on it for space surveillance and satellite tracking. The RASA 6 delivers that same proven design in a portable package.\u003c\/p\u003e\n          \u003cul class=\"cr-check-list\"\u003e\n            \u003cli\u003e\n              \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n              Schmidt corrector plate and primary mirror minimise optical aberrations across the field\n            \u003c\/li\u003e\n            \u003cli\u003e\n              \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n              Three-element rare-earth glass lens group ensures sharp, flat focus edge-to-edge\n            \u003c\/li\u003e\n            \u003cli\u003e\n              \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n              Spot size under 1.5 μm RMS across the full image circle\n            \u003c\/li\u003e\n          \u003c\/ul\u003e\n          \u003cdiv class=\"cr-big-stat\"\u003e\n            \u003cspan class=\"cr-big-num\"\u003e472×\u003c\/span\u003e\n            \u003cspan class=\"cr-big-unit\"\u003elight-gathering vs the naked eye\u003c\/span\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-split-img\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/91071_6in_Rowe-Ackermann_Schmidt_Astrograph_Diagram_1a017fbd-3603-403f-912d-e0c862d130d2_jpg.webp?v=1777007318\" alt=\"Celestron RASA 6 optical path diagram showing prime-focus design\" loading=\"lazy\"\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-cinema\"\u003e\n    \u003cdiv class=\"cr-cinema-cap\"\u003e\n      \u003cspan class=\"cr-eyebrow\"\u003eSample image\u003c\/span\u003e\n      \u003ch2 class=\"cr-grad-headline\"\u003eNGC 6888. The Crescent Nebula.\u003c\/h2\u003e\n      \u003cp\u003eCaptured with the RASA 6 and an astronomical CMOS camera. Short sub-exposures stack into stunning images in a fraction of the time needed by slower instruments.\u003c\/p\u003e\n      \u003cdiv class=\"cr-cinema-meta\"\u003e\n        \u003cdiv class=\"cr-cinema-meta-item\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 6v6l4 2\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n          Shorter sub-exposures\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-cinema-meta-item\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M2 12s3-7 10-7 10 7 10 7-3 7-10 7-10-7-10-7z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"3\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\n          f\/2.2 prime focus\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-cinema-meta-item\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\u003e\u003c\/polygon\u003e\u003c\/svg\u003e\n          StarBright XLT coatings\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cimg class=\"cr-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/91071_6in_Rowe-Ackermann_Schmidt_Astrograph_Astroimage_Crescent_Nebula_5f7fc9a3-871e-402b-969e-9566c56fead7_jpg.webp?v=1777007318\" alt=\"NGC 6888 Crescent Nebula imaged with the Celestron RASA 6\" loading=\"lazy\"\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-section cr-on-dark\" id=\"cr-features\"\u003e\n    \u003cdiv class=\"cr-container-wide\"\u003e\n      \u003cspan class=\"cr-eyebrow\"\u003eWhy the RASA 6\u003c\/span\u003e\n      \u003ch2 class=\"cr-grad-headline\"\u003eFour reasons it’s unlike anything else in its class.\u003c\/h2\u003e\n      \u003cp class=\"cr-lead\"\u003eSpeed, resolution, portability and field of view, all engineered into one compact prime-focus astrograph.\u003c\/p\u003e\n\n      \u003cdiv class=\"cr-bento\"\u003e\n\n        \u003cdiv class=\"cr-bento-card cr-span-3\" style=\"background:#1D1D1F;\"\u003e\n          \u003cspan class=\"cr-bento-eyebrow\"\u003eSpeed\u003c\/span\u003e\n          \u003ch3\u003eLightning-fast astrophotography at f\/2.2.\u003c\/h3\u003e\n          \u003cp\u003eThe RASA 6’s blazing focal ratio dramatically shortens sub-exposure times. Faint deep-sky objects that would take hours with a typical refractor can be captured in a fraction of that time. Paired with live-stacking software, bright detailed images appear on your screen in just minutes. In many conditions you can image without an autoguider, simplifying your entire setup.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"cr-bento-card cr-span-3\" style=\"background:#1D1D1F;\"\u003e\n          \u003cspan class=\"cr-bento-eyebrow\"\u003eResolution\u003c\/span\u003e\n          \u003ch3\u003eSub-arcsecond potential.\u003c\/h3\u003e\n          \u003cp\u003eDespite its compact size the 152 mm aperture delivers a Dawes resolution of 0.76 arc seconds. Pair it with a high-resolution CMOS camera in steady seeing and you will resolve fine structure in galaxies, nebulae and star clusters that smaller instruments cannot touch. The flat field means stars stay sharp from the centre all the way to the corner of the sensor.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"cr-bento-card cr-span-3\" style=\"background:#1D1D1F;\"\u003e\n          \u003cspan class=\"cr-bento-eyebrow\"\u003ePortability\u003c\/span\u003e\n          \u003ch3\u003eGrab-and-go, genuinely.\u003c\/h3\u003e\n          \u003cp\u003eAt 3.8 kg the RASA 6 is light enough to carry with one hand and fits in a bag alongside your mount. The CG-5 dovetail means it drops straight onto most mid-range tracking mounts without adapters. Chase dark skies without compromising on optical performance. This is the astrograph you will actually take with you.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"cr-bento-card cr-span-3\" style=\"background:#1D1D1F;\"\u003e\n          \u003cspan class=\"cr-bento-eyebrow\"\u003eField of view\u003c\/span\u003e\n          \u003ch3\u003eWide field without sacrifice.\u003c\/h3\u003e\n          \u003cp\u003eThe RASA 6 is designed for sensors up to 22 mm diagonal, delivering a useable field of 3.76°. Wide enough to frame the Orion Nebula, the Pleiades and large emission nebulae in a single shot. Off-axis illumination of 91% at 8 mm means the field stays bright from edge to edge, reducing processing time on flats and vignette correction.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-split-block cr-reverse cr-on-dark\"\u003e\n    \u003cdiv class=\"cr-container-wide\"\u003e\n      \u003cdiv class=\"cr-split-grid\"\u003e\n        \u003cdiv class=\"cr-split-text\"\u003e\n          \u003cspan class=\"cr-eyebrow\"\u003eOptical Coatings\u003c\/span\u003e\n          \u003ch2\u003eStarBright XLT. Maximum light throughput.\u003c\/h2\u003e\n          \u003cp\u003eEvery refractive and reflective surface is treated with Celestron’s proprietary StarBright XLT multi-layer coating. The result is exceptional light transmission and superior field illumination across the full wavelength range from 400 to 700 nm.\u003c\/p\u003e\n          \u003cp\u003eThe RASA design outperforms a Schmidt-Cassegrain in Fastar-style configuration for field illumination. Less vignette, less processing, more imaging.\u003c\/p\u003e\n          \u003cdiv class=\"cr-big-stat\"\u003e\n            \u003cspan class=\"cr-big-num\"\u003e91%\u003c\/span\u003e\n            \u003cspan class=\"cr-big-unit\"\u003eillumination at 8 mm off-axis\u003c\/span\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-split-img\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/RASA6800x800_0002_RASA3.jpg\" alt=\"Celestron RASA 6 StarBright XLT coated optics, front element\" loading=\"lazy\"\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-cinema\"\u003e\n    \u003cdiv class=\"cr-cinema-cap\"\u003e\n      \u003cspan class=\"cr-eyebrow\"\u003eSample image\u003c\/span\u003e\n      \u003ch2 class=\"cr-grad-headline\"\u003eM42. The Orion Nebula.\u003c\/h2\u003e\n      \u003cp\u003eIMX183C colour CMOS camera. 60 × 2 min exposures plus 20 × 15 sec exposures for the bright core. The wide field and fast optics of the RASA 6 capture the full extent of the nebula in a single frame.\u003c\/p\u003e\n      \u003cdiv class=\"cr-cinema-meta\"\u003e\n        \u003cdiv class=\"cr-cinema-meta-item\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003crect x=\"3\" y=\"3\" width=\"18\" height=\"18\" rx=\"2\"\u003e\u003c\/rect\u003e\u003cpath d=\"M3 9h18M9 21V9\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n          IMX183C CMOS sensor\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-cinema-meta-item\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 6v6l4 2\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n          60 × 2 min + 20 × 15 sec\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cimg class=\"cr-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/RASA6_AstroImage_M42_IMX183C_60x2min_20x15s_jpg.webp?v=1777007318\" alt=\"M42 Orion Nebula imaged with the Celestron RASA 6\" loading=\"lazy\"\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-section cr-on-paper\"\u003e\n    \u003cdiv class=\"cr-container-wide\"\u003e\n      \u003cspan class=\"cr-eyebrow\"\u003eBuilt-in features\u003c\/span\u003e\n      \u003ch2\u003eEverything the modern astroimager needs, \u003cspan class=\"cr-mute-text\"\u003eintegrated.\u003c\/span\u003e\n\u003c\/h2\u003e\n      \u003cp class=\"cr-lead\"\u003eA filter drawer, a cooling fan, a camera adapter and a CG-5 dovetail. Ready to image, straight out of the box.\u003c\/p\u003e\n\n      \u003cdiv class=\"cr-bento\"\u003e\n\n        \u003cdiv class=\"cr-bento-card cr-span-3\"\u003e\n          \u003cspan class=\"cr-bento-eyebrow\"\u003eIntegrated Filter Drawer\u003c\/span\u003e\n          \u003ch3\u003e1.25″ and 2″ filters. Without slowing you down.\u003c\/h3\u003e\n          \u003cp\u003eThe built-in filter drawer accepts both 1.25″ and 2″ filters. A removable 2″ clear optical window ships as standard. Unlike many fast astrographs, swapping in a filter adds no extra glass to the optical path, so f\/2.2 performance is fully preserved.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"cr-bento-card cr-span-3\"\u003e\n          \u003cspan class=\"cr-bento-eyebrow\"\u003eMagLev Cooling Fan\u003c\/span\u003e\n          \u003ch3\u003eThermal equilibrium, fast.\u003c\/h3\u003e\n          \u003cp\u003eThe integrated 12V DC MagLev fan pulls air through mesh vents to rapidly cool the optical system to ambient temperature. Sharper stars and better images from the moment you start. The fan battery pack is included.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"cr-bento-card cr-span-3\"\u003e\n          \u003cspan class=\"cr-bento-eyebrow\"\u003eM42 Camera Interface\u003c\/span\u003e\n          \u003ch3\u003ePlug a CMOS camera straight in.\u003c\/h3\u003e\n          \u003cp\u003eThe included M42 T-thread camera adapter attaches most popular astronomical CMOS cameras directly to the RASA 6 without extension tubes. The 42 mm clear aperture comfortably accommodates sensors up to 22 mm diagonal. Back focus with the included adapter is 17.5 mm.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"cr-bento-card cr-span-3\"\u003e\n          \u003cspan class=\"cr-bento-eyebrow\"\u003eCG-5 Dovetail\u003c\/span\u003e\n          \u003ch3\u003eMount-ready, no adapters.\u003c\/h3\u003e\n          \u003cp\u003eThe CG-5 dovetail bar is compatible with a wide range of tracking mounts straight out of the box. No adapters, no Vixen-to-Losmandy conversions. Ready to image as soon as you saddle up. For maximum performance, add the optional Celestron Focus Motor for electronic focus control.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-gallery\"\u003e\n    \u003cdiv class=\"cr-gallery-head\"\u003e\n      \u003cspan class=\"cr-eyebrow\"\u003eAstrophotography\u003c\/span\u003e\n      \u003ch2\u003eResults from the RASA 6.\u003c\/h2\u003e\n      \u003cp\u003eSample images taken with the RASA 6 and an IMX183C colour CMOS camera at f\/2.2.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"cr-gallery-grid\"\u003e\n      \u003cdiv class=\"cr-gallery-main\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/RASA6_AstroImage_NGC2244_IMX183C_60x2min_20x15s_tif_jpg.webp?v=1777007318\" alt=\"NGC 2244 Rosette Nebula imaged with the Celestron RASA 6\" loading=\"lazy\"\u003e\n        \u003cdiv class=\"cr-gallery-cap\"\u003e\n          \u003cstrong\u003eNGC 2244 - Rosette Nebula\u003c\/strong\u003e\n          \u003cspan\u003eIMX183C · 60 × 2 min exposures\u003c\/span\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"cr-gallery-side\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/91071_6in_Rowe-Ackermann_Schmidt_Astrograph_Astroimage_M16_d4a20288-da71-4c91-b0a5-a0f7cb4d8c7a_jpg.webp?v=1777007318\" alt=\"M16 Eagle Nebula imaged with the Celestron RASA 6\" loading=\"lazy\"\u003e\n        \u003cdiv class=\"cr-gallery-cap\"\u003e\n          \u003cstrong\u003eM16 - Eagle Nebula\u003c\/strong\u003e\n          \u003cspan\u003eCelestron RASA 6 sample image\u003c\/span\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"cr-gallery-side\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/91071_6in_Rowe-Ackermann_Schmidt_Astrograph_Astroimage_Crescent_Nebula_5f7fc9a3-871e-402b-969e-9566c56fead7_jpg.webp?v=1777007318\" alt=\"NGC 6888 Crescent Nebula imaged with the Celestron RASA 6\" loading=\"lazy\"\u003e\n        \u003cdiv class=\"cr-gallery-cap\"\u003e\n          \u003cstrong\u003eNGC 6888 - Crescent Nebula\u003c\/strong\u003e\n          \u003cspan\u003eCelestron RASA 6 sample image\u003c\/span\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-highlights\"\u003e\n    \u003cdiv class=\"cr-highlights-inner\"\u003e\n      \u003cdiv class=\"cr-highlights-head\"\u003e\n        \u003ch2\u003eHighlights.\u003c\/h2\u003e\n        \u003cp\u003eEverything that makes the RASA 6 the most portable serious astrograph in its class.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"cr-highlights-grid\"\u003e\n        \u003cdiv class=\"cr-highlight-item\"\u003e\n          \u003csvg class=\"cr-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          \u003cp\u003e152 mm (5.98″) aperture, 335 mm focal length, f\/2.2 prime focus\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-highlight-item\"\u003e\n          \u003csvg class=\"cr-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          \u003cp\u003ePatented Rowe-Ackermann Schmidt prime-focus astrograph optical design\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-highlight-item\"\u003e\n          \u003csvg class=\"cr-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          \u003cp\u003eStarBright XLT multi-layer coatings on every refractive and reflective surface\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-highlight-item\"\u003e\n          \u003csvg class=\"cr-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          \u003cp\u003e91% off-axis illumination at 8 mm and 472× light-gathering vs the eye\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-highlight-item\"\u003e\n          \u003csvg class=\"cr-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          \u003cp\u003eUseable field of 3.76° for sensors up to 22 mm diagonal\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-highlight-item\"\u003e\n          \u003csvg class=\"cr-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          \u003cp\u003eBuilt-in 1.25″ \/ 2″ filter drawer with included clear optical window\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-highlight-item\"\u003e\n          \u003csvg class=\"cr-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          \u003cp\u003eIntegrated 12 V DC MagLev cooling fan with battery pack\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"cr-highlight-item\"\u003e\n          \u003csvg class=\"cr-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          \u003cp\u003e3.8 kg optical tube with CG-5 dovetail for fast mount setup\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-specs-section\" id=\"cr-specs\"\u003e\n    \u003cdiv class=\"cr-container-wide\"\u003e\n      \u003cspan class=\"cr-eyebrow\" style=\"text-align:center; display:block;\"\u003eTech Specs\u003c\/span\u003e\n      \u003ch2\u003eCelestron RASA 6.\u003c\/h2\u003e\n      \u003cp class=\"cr-lead\"\u003eComplete technical data for your imaging setup planning.\u003c\/p\u003e\n\n      \u003ctable class=\"cr-specs-table\"\u003e\n        \u003ctbody\u003e\n          \u003ctr class=\"cr-specs-cat\"\u003e\u003ctd colspan=\"2\"\u003eOptical Tube\u003c\/td\u003e\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eRowe-Ackermann Schmidt Astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e152 mm (5.98″)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eFocal length\u003c\/td\u003e\n\u003ctd\u003e335 mm (13.18″)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/2.2\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eOptical coatings\u003c\/td\u003e\n\u003ctd\u003eStarBright XLT (all refractive and reflective surfaces)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eTube material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eTube length\u003c\/td\u003e\n\u003ctd\u003e609.6 mm (24″)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eTube diameter\u003c\/td\u003e\n\u003ctd\u003e177.8 mm (7″)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.8 kg (8.4 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDovetail\u003c\/td\u003e\n\u003ctd\u003eCG-5 dovetail bar\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eStandard Schmidt-Cassegrain focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\n          \u003ctr class=\"cr-specs-cat\"\u003e\u003ctd colspan=\"2\"\u003eOptical Performance\u003c\/td\u003e\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eCentral obstruction\u003c\/td\u003e\n\u003ctd\u003e77 mm (3.03″) - 46% of aperture diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eLight-gathering power\u003c\/td\u003e\n\u003ctd\u003e472× vs the human eye\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eResolution (Rayleigh)\u003c\/td\u003e\n\u003ctd\u003e0.91 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eResolution (Dawes)\u003c\/td\u003e\n\u003ctd\u003e0.76 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSpot size\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1.5 μm RMS across the full image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eOff-axis illumination\u003c\/td\u003e\n\u003ctd\u003e91% at 8 mm (0.31″) off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eWavelength range\u003c\/td\u003e\n\u003ctd\u003e400–700 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\n          \u003ctr class=\"cr-specs-cat\"\u003e\u003ctd colspan=\"2\"\u003eField of View \u0026amp; Camera Interface\u003c\/td\u003e\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eImage circle\u003c\/td\u003e\n\u003ctd\u003e16 mm (0.63″) Ø, 2.74°\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eUseable field\u003c\/td\u003e\n\u003ctd\u003e22 mm (0.86″) Ø, 3.76° (minimal performance loss at edge)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eCamera mounting threads\u003c\/td\u003e\n\u003ctd\u003eM42\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eBack focus (with adapter)\u003c\/td\u003e\n\u003ctd\u003e17.5 mm (0.69″)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n          \u003ctr class=\"cr-specs-cat\"\u003e\u003ctd colspan=\"2\"\u003eFilter System\u003c\/td\u003e\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eFilter drawer\u003c\/td\u003e\n\u003ctd\u003eAccepts 2″ format filters, includes 1.25″ adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eClear filter included\u003c\/td\u003e\n\u003ctd\u003e2″ AR-coated optical window, 2 mm glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\n          \u003ctr class=\"cr-specs-cat\"\u003e\u003ctd colspan=\"2\"\u003eCooling \u0026amp; Electronics\u003c\/td\u003e\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eCooling fan\u003c\/td\u003e\n\u003ctd\u003e12 V DC MagLev\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eFan power\u003c\/td\u003e\n\u003ctd\u003eFan battery pack (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n          \u003ctr class=\"cr-specs-cat\"\u003e\u003ctd colspan=\"2\"\u003eIn the Box\u003c\/td\u003e\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eIncluded items\u003c\/td\u003e\n\u003ctd\u003eM42 (42 mm T-thread) camera adapter, fan battery pack, filter drawer with 2″ clear filter\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"cr-closing\"\u003e\n    \u003cdiv class=\"cr-container\"\u003e\n      \u003cspan class=\"cr-eyebrow\"\u003eBacked by Bintel\u003c\/span\u003e\n      \u003ch2\u003eProfessional optics. \u003cspan class=\"cr-mute-text\"\u003ePortable by design.\u003c\/span\u003e\n\u003c\/h2\u003e\n      \u003cp\u003eThe same prime-focus optical technology trusted by defence contractors and professional researchers, now in a grab-and-go package built for serious Australian astrophotographers. Backed by Bintel’s 40 years of expert optics support.\u003c\/p\u003e\n      \u003cdiv class=\"cr-perks\"\u003e\n        \u003cspan class=\"cr-perk\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          StarBright XLT on every surface\n        \u003c\/span\u003e\n        \u003cspan class=\"cr-perk\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          Patented RASA prime-focus design\n        \u003c\/span\u003e\n        \u003cspan class=\"cr-perk\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          Integrated filter drawer \u0026amp; cooling fan\n        \u003c\/span\u003e\n        \u003cspan class=\"cr-perk\"\u003e\n          \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n          CG-5 dovetail, mount-ready\n        \u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\n(function(){\n  var root = document.querySelector('.celestron-rasa6-page');\n  if (!root) return;\n  var io = new IntersectionObserver(function(entries){\n    entries.forEach(function(entry){\n      if (entry.isIntersecting) {\n        entry.target.style.opacity = '1';\n        entry.target.style.transform = 'translateY(0)';\n      }\n    });\n  }, { threshold: 0.1, rootMargin: '0px 0px -40px 0px' });\n  root.querySelectorAll('.cr-bento-card, .cr-split-grid, .cr-stats-grid, .cr-specs-table, .cr-perks, .cr-pullquote p, .cr-highlight-item, .cr-cinema-cap, .cr-gallery-grid').forEach(function(el){\n    el.style.opacity = '0';\n    el.style.transform = 'translateY(20px)';\n    el.style.transition = 'opacity 0.7s ease, transform 0.7s ease';\n    io.observe(el);\n  });\n})();\n\u003c\/script\u003e\n","brand":"Celestron","offers":[{"title":"Default Title","offer_id":42598102270021,"sku":"91071","price":3216.53,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/RASA6800x800_0000_RASA1.jpg?v=1743030036"},{"product_id":"sky-watcher-esprit-70edx-apo-ota","title":"Sky-Watcher  Esprit 70EDX APO OTA","description":"\u003ch3 style=\"text-align: center;\"\u003e\u003cem\u003eNew from Sky-Watcher - the smallest member of their Esprit range of APO triplet refractors\u003c\/em\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eSky-Watcher 70mm Esprit 70EDX Triplet APO Refractor\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eis a professional instrument for the most demanding and exacting astrophotographers. The air spaced apochromatic triplet lenses have exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAir Spaced 70mm Apochromatic Triplet\u003c\/li\u003e\n\u003cli\u003e490mm Focal Length\u003c\/li\u003e\n\u003cli\u003eFully multi coated lenses\u003c\/li\u003e\n\u003cli\u003eOptional 0.92x Reducer Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIn The Box:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e70\/490 Apochromatic Refractor\u003c\/li\u003e\n\u003cli\u003eRetractable Dew Shield\u003c\/li\u003e\n\u003cli\u003eD Style dovetail Bar and rings w\/handle\u003c\/li\u003e\n\u003cli\u003eAluminium Foam-Lined Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 99.9589%; height: 156.667px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 34.3094%; height: 19.5833px;\"\u003eOptical Design\u003c\/td\u003e\n\u003ctd style=\"width: 65.5489%; height: 19.5833px;\"\u003e Airspaced Apochromatic Triplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 34.3094%; height: 19.5833px;\"\u003eAperture\u003c\/td\u003e\n\u003ctd style=\"width: 65.5489%; height: 19.5833px;\"\u003e70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 34.3094%; height: 19.5833px;\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd style=\"width: 65.5489%; height: 19.5833px;\"\u003e490mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 34.3094%; height: 19.5833px;\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd style=\"width: 65.5489%; height: 19.5833px;\"\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 34.3094%; height: 19.5833px;\"\u003eImage Height\u003c\/td\u003e\n\u003ctd style=\"width: 65.5489%; height: 19.5833px;\"\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 34.3094%; height: 39.1667px;\"\u003eLength after Lens Hood Retracted\u003c\/td\u003e\n\u003ctd style=\"width: 65.5489%; height: 39.1667px;\"\u003e368mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 34.3094%; height: 19.5833px;\"\u003eTotal Length\u003c\/td\u003e\n\u003ctd style=\"width: 65.5489%; height: 19.5833px;\"\u003e420mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.3094%;\"\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd style=\"width: 65.5489%;\"\u003e3.2kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TSA","offers":[{"title":"Default Title","offer_id":42705636589637,"sku":"SWESPRIT70EDX","price":1999.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/70edx-1-w.jpg?v=1745979117"},{"product_id":"planewave-drl350-observatory-system","title":"Planewave DRL350 Observatory System","description":"\u003cp\u003e\u003cspan\u003eThe DeltaRho 350 Telescope System from PlaneWave Instruments is crafted for elite astronomers and astrophotographers who demand the best. Created with a passion for excellence, the DeltaRho 350 Telescope System brings groundbreaking features to advanced imaging, offering unmatched versatility across a spectrum of scientific and communicative applications. The DeltaRho 350 Telescope System from PlaneWave Instruments features a 350mm wide-field, f\/3 aperture. This premium CDK optical tube combines a DeltaRho 350 with a L-350 direct drive mount.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"et_pb_module et_pb_wc_description et_pb_wc_description_1 text-columns-two et_pb_bg_layout_light  et_pb_text_align_left\"\u003e\n\u003cdiv class=\"et_pb_module_inner\"\u003e\n\u003ch2\u003eDeltaRho 350 Telescope System’s Key Features\u003c\/h2\u003e\n\u003ch3\u003eLarge Aperture and Fast Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eThe DeltRho 350 has a 350 mm aperture and an impressively fast f\/3 focal ratio. This combination allows significant light-gathering capability and rapid image capture, perfect for detailed SSA\/SDA object capture and deep-sky photography.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Optical Design\u003c\/h3\u003e\n\u003cp\u003eFeaturing a corrected Cassegrain focus optical system, the DeltaRho 350 ensures top-tier image clarity. Achieve sharp, flat fields across the entire field of view with no curvature, capturing stellar images that require minimal post-processing.\u003c\/p\u003e\n\u003ch3\u003eMechanical Structure\u003c\/h3\u003e\n\u003cp\u003eConstructed with a lightweight yet sturdy carbon fiber tube. This Offers enhanced durability and stability while minimizing thermal expansion and maintaining optimal image quality under various environmental conditions.\u003c\/p\u003e\n\u003ch3\u003eHigh-Performance Coatings\u003c\/h3\u003e\n\u003cp\u003eEquipped with high-quality mirror coatings that can be customized to meet specific observational requirements. It enhances light transmission and reduces stray light, optimizing the telescope for specialized applications such as SSA\/SDA and FSO.\u003c\/p\u003e\n\u003ch3\u003eCollimation Software\u003c\/h3\u003e\n\u003cp\u003eThe DeltaRho 350 is equipped with user-friendly collimation software designed to ensure optimal alignment of optical elements quickly and accurately. This feature is crucial for maintaining the high resolution and sharpness needed for professional-level imaging and research, allowing users to adjust collimation on the fly easily.\u003c\/p\u003e\n\u003ch3\u003eDew Control\u003c\/h3\u003e\n\u003cp\u003eIntegrated dew control systems in the DeltaRho 350 utilize advanced heater technology to prevent condensation on optical surfaces. This system ensures that dew does not interrupt observations and imaging sessions, providing consistent clarity and performance in various environmental conditions.\u003c\/p\u003e\n\u003ch2\u003eApplication-Specific Benefits\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eThe DeltaRho 350’s fast exposures and expansive field view allow astrophotographers to capture breathtaking night sky images with exceptional detail and clarity.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eWith its robust build and advanced optics, the DeltaRho 350 is an excellent tool for universities and research institutions engaged in long-term astronomical studies.\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eThe Delta Rho's fast focal ratio and large image circle allow you to take shorter exposures and use larger Sensors. Making it perfect for surveying larger areas of the sky for quicker monitoring and cataloging of space debris and satellites.\u003c\/p\u003e\n\u003ch3\u003eMount Systems\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"488\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"352\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eMount Weight\u003c\/td\u003e\n\u003ctd width=\"352\"\u003e110 lbs (50 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMax. Load Capacity\u003c\/td\u003e\n\u003ctd\u003e100 lbs (45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLatitude Range\u003c\/td\u003e\n\u003ctd\u003e0 to 90 degrees, Northern and Southern hemispheres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCable Management\u003c\/td\u003e\n\u003ctd\u003eEquipment cables can be wired through mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eControl systems\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eControl Electronics\u003c\/td\u003e\n\u003ctd width=\"645\"\u003ePlaneWave Interface dual axis telescope control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eHoming Sensors\u003c\/td\u003e\n\u003ctd\u003eHome position sensors are included allowing the mount can find its home position on power up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eSlew Rate\u003c\/td\u003e\n\u003ctd\u003e20 degrees per second (standard); 50 degrees per second (maximum), both axes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eAccepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eOptical Systems\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eAperture\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e350 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1050 mm (41.34 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e56 % by diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBackfocus from Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e5.6 in. (142.24 mm). This distance includes refraction from filters.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e46 lbs (21 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eMotion control\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eMotor – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eDirect Drive 3 Phase Axial-Flux Torque Motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eEncoder – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd\u003e152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMotor Torque\u003c\/td\u003e\n\u003ctd\u003eApproximately 20 ft-lbs continuous; 50 ft-lbs peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eDrive Electronics\u003c\/td\u003e\n\u003ctd\u003eIndustrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eTelescope Control Software\u003c\/td\u003e\n\u003ctd\u003eUses PWI4. Incorporates PointXP mount modeling software by Dave Rowe. All ASCOM compatible.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSystem Performance\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003ePointing Accuracy\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e\u0026lt;10 arcsecond RMS with PointXP Model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003ePointing Precision\u003c\/td\u003e\n\u003ctd\u003e2 arcseconds at sidereal velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eTracking Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.3 arcseconds over a 5-minute period at sidereal velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eSystem Natural Frequency\u003c\/td\u003e\n\u003ctd\u003e10 Hz or greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ch3\u003eIncluded items\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eIncluded Items\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eFlashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42709235630149,"sku":"140131Q","price":63800.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-dr-350.jpg?v=1746056442"},{"product_id":"planewave-cdk450q-observatory-system","title":"Planewave CDK450Q Observatory System","description":"\u003cp\u003e\u003cspan\u003eThe CDK450 Observatory System from PlaneWave Instruments is a sophisticated solution designed for the serious astrophotographer and dedicated astronomy researcher. This high-end system combines the powerful CDK17 optical tube with the precise L-550 direct-drive mount, creating an exceptional observational platform that excels in a variety of scientific and imaging applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features of the CDK450 Observatory System\u003c\/h2\u003e\n\u003ch3\u003eCDK17 Optical Tube Assembly\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Optical Design\u003c\/strong\u003e: Employs a Corrected Dall-Kirkham optical design, achieving a field free of off-axis coma and astigmatism and a perfectly flat field across a 52 mm image circle, resulting in critically sharp images over the entire viewing area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction\u003c\/strong\u003e: Constructed with robust carbon fiber, reducing thermal expansion and enabling quick thermal equilibration, which helps maintain precise optical alignment under fluctuating temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Mirrors and Coatings\u003c\/strong\u003e: Equipped with high-stability fused silica mirrors known for minimal thermal expansion, paired with high-performance coatings that maximize light throughput while minimizing stray light for optimal imaging quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management\u003c\/strong\u003e: Incorporates an advanced cooling system with strategically placed fans that ensure rapid thermal stabilization, essential for maintaining consistent, high-quality imaging and minimizing focus shifts caused by temperature changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCDK17 f\/6.8 OTA\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture and Focal Length\u003c\/strong\u003e: Features a 17-inch aperture, a shorter 3454 mm focal length at a faster f\/6.8 focal ratio, and a shorter back focus of 262 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eL-550 Direct Drive Mount\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Drive Motors\u003c\/strong\u003e: Features state-of-the-art direct-drive motors on each axis, providing smooth, fast, and virtually silent movement of the telescope with zero backlash and zero periodic error, perfect for precise tracking and rapid repositioning of celestial objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Encoders\u003c\/strong\u003e: Outfitted with high-resolution optical encoders on both axes, offering precise positioning and movement, which is crucial for elite astrophotography and detailed astronomical studies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAzimuth Dovetail Balance System\u003c\/strong\u003e: Includes a finely adjustable balance system that enhances the stability and performance of the setup in both alt-azimuth and equatorial configurations, essential for prolonged accurate tracking and reducing stress on the mount during extended observations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Target Acquisition\u003c\/strong\u003e: Capable of impressive slew speeds up to 50 degrees per second, allowing for quick and efficient targeting of celestial bodies and satellites, vital for dynamic observations and responsive astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003eApplication-Specific Advantages\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eThe CDK450 is a formidable system for astrophotographers, offering unmatched tracking accuracy and image stability, which facilitate capturing spectacular celestial images with detailed resolution and vibrant colors. The L-550 carries a greater payload capacity – perfect for holding a second telescope on the outside hub.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eResearchers will find the CDK450 invaluable for its consistent performance and precise data collection capabilities. It serves as a robust platform for sophisticated photometry, spectroscopy, and minor planet tracking, offering a solid foundation for scientific discovery and exploration.\u003c\/p\u003e\n\u003ch3\u003eVisual Observations\u003c\/h3\u003e\n\u003cp\u003eFor enthusiasts of visual astronomy, the CDK450 provides vibrant and detailed views of the universe. Its significant aperture and high-quality optical components ensure exceptional viewing of planetary, lunar, and deep-sky objects, enriching every observational experience.\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eWith its swift and precise repositioning capabilities, the L-550 mount in the CDK450 system is capable of tracking satellites and space debris. However, it's important to note that while the L-series mounts are highly effective for astrophotography and research applications, they might not meet the optimal performance standards required for dedicated SSA\/SDA operations. For those needs, we recommend exploring our T-600 Direct-Drive Gimbal, specifically engineered to exceed the demanding requirements for SSA\/SDA applications, ensuring superior tracking and responsiveness in monitoring and cataloging space objects.\u003c\/p\u003e\n\u003ch3\u003eMount system \u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eMount Weight\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e338 lbs (153 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMax. Load Capacity\u003c\/td\u003e\n\u003ctd\u003e300 lbs (136 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLatitude Range\u003c\/td\u003e\n\u003ctd\u003e0 to 90 degrees, Northern and Southern hemispheres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCable Management\u003c\/td\u003e\n\u003ctd\u003eEquipment cables can be wired through mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eControl system\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eControl Electronics\u003c\/td\u003e\n\u003ctd width=\"645\"\u003ePlaneWave Interface dual axis telescope control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eHoming Sensors\u003c\/td\u003e\n\u003ctd\u003eHome position sensors are included allowing the mount can find its home position on power up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eSlew Rate\u003c\/td\u003e\n\u003ctd\u003e20 degrees per second (standard); 50 degrees per second (maximum), both axes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eAccepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eOptical systems\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eAperture\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e17 inch (432 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2939 mm (115.71 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e23.7% by surface area; 48.6% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBackfocus from Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e10.32 inch (262.33 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBackfocus from Racked in Focuser\u003c\/td\u003e\n\u003ctd\u003e7.24 inch (184 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e106 lbs (48 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOptimal Field of View\u003c\/td\u003e\n\u003ctd\u003e70mm image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMotion control \u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eMotor – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eDirect Drive 3 Phase Axial-Flux Torque Motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eEncoder – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd\u003e152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMotor Torque\u003c\/td\u003e\n\u003ctd\u003eApproximately 20 ft-lbs continuous; 50 ft-lbs peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eDrive Electronics\u003c\/td\u003e\n\u003ctd\u003eIndustrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eTelescope Control Software\u003c\/td\u003e\n\u003ctd\u003eUses PWI4. Incorporates PointXP mount modeling software by Dave Rowe. All ASCOM compatible.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSystem Performance \u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003ePointing Accuracy\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e\u0026lt;10 arcsecond RMS with PointXP Model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003ePointing Precision\u003c\/td\u003e\n\u003ctd\u003e2 arcseconds at sidereal velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eTracking Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.3 arcseconds over a 5-minute period at sidereal velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eSystem Natural Frequency\u003c\/td\u003e\n\u003ctd\u003e10 Hz or greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIncluded Items\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"136\"\u003e \u003ccol width=\"645\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eIncluded Items\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eHeating elements for dew prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eFlash drive - Contains PWI4 software for mount control , instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eHardware - Six 1\/2-13 x 1 1\/4″ socket head cap screws to bolt the mount to the pier, or wedge; Six 1\/2-13 washers; One extended length shoulder bolt for RA axis to EQ wedge alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOne 16′ USB cable - To connect the mount to the observatory control computer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOne 120VAC power cable - To provide power to the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard Allen Key set - For tightening bolts used on the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eGamepad - Used for control of the mount tracking speeds for visual observing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eDovetail Saddle (200919) - The PW wide saddle comes standard with the L-550 mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42709262467141,"sku":"170131Q","price":99310.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Planewavecdk450system_7908ce60-3312-4b53-9e0f-cdcd0b02bbd4.jpg?v=1746058332"},{"product_id":"planewave-cdk500-observatory-system","title":"Planewave CDK500 Observatory System","description":"\u003cp\u003e\u003cspan\u003eThe CDK500 Observatory System from PlaneWave Instruments is a sophisticated solution designed for the serious astrophotographer and dedicated astronomy researcher. This high-end system combines the powerful CDK20 optical tube with the precise L-500 direct-drive mount, creating an exceptional observational platform that excels in a variety of scientific and imaging applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eKey Features of the CDK500 Observatory System\u003c\/h2\u003e\n\u003ch3\u003eCDK20 Optical Tube Assembly\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Optical Design\u003c\/strong\u003e: Employs a Corrected Dall-Kirkham optical design, achieving a field free of off-axis coma and astigmatism and a perfectly flat field across a 52 mm image circle, resulting in critically sharp images over the entire viewing area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction\u003c\/strong\u003e: Constructed with robust carbon fiber, reducing thermal expansion and enabling quick thermal equilibration, which helps maintain precise optical alignment under fluctuating temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Mirrors and Coatings\u003c\/strong\u003e: Equipped with high-stability fused silica mirrors known for minimal thermal expansion, paired with high-performance coatings that maximize light throughput while minimizing stray light for optimal imaging quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management\u003c\/strong\u003e: Incorporates an advanced cooling system with strategically placed fans that ensure rapid thermal stabilization, essential for maintaining consistent, high-quality imaging and minimizing focus shifts caused by temperature changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCDK20 f\/6.8 OTA\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture and Focal Length\u003c\/strong\u003e: Features a 20-inch aperture, a shorter 3454 mm focal length at a faster f\/6.8 focal ratio, and a shorter back focus of 223 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCDK20 f\/7.7 OTA\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAperture and Focal Length: Features a 20-inch aperture, a longer 3947mm focal length at an f\/7.7 focal ratio, and a longer 269.24 mm back focus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eL-500 Direct Drive Mount\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Drive Motors\u003c\/strong\u003e: Features state-of-the-art direct-drive motors on each axis, providing smooth, fast, and virtually silent movement of the telescope with zero backlash and zero periodic error, perfect for precise tracking and rapid repositioning of celestial objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Encoders\u003c\/strong\u003e: Outfitted with high-resolution optical encoders on both axes, offering precise positioning and movement, which is crucial for elite astrophotography and detailed astronomical studies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAzimuth Dovetail Balance System\u003c\/strong\u003e: Includes a finely adjustable balance system that enhances the stability and performance of the setup in both alt-azimuth and equatorial configurations, essential for prolonged accurate tracking and reducing stress on the mount during extended observations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Target Acquisition\u003c\/strong\u003e: Capable of impressive slew speeds up to 50 degrees per second, allowing for quick and efficient targeting of celestial bodies and satellites, vital for dynamic observations and responsive astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplication-Specific Advantages\u003c\/h2\u003e\n\u003ch3\u003eAstrophotography\u003c\/h3\u003e\n\u003cp\u003eThe CDK500 is a formidable system for astrophotographers, offering unmatched tracking accuracy and image stability, which facilitate capturing spectacular celestial images with detailed resolution and vibrant colors.\u003c\/p\u003e\n\u003ch3\u003eAstronomy Research\u003c\/h3\u003e\n\u003cp\u003eResearchers will find the CDK500 invaluable for its consistent performance and precise data collection capabilities. It serves as a robust platform for sophisticated photometry, spectroscopy, and minor planet tracking, offering a solid foundation for scientific discovery and exploration.\u003c\/p\u003e\n\u003ch3\u003eVisual Observations\u003c\/h3\u003e\n\u003cp\u003eFor enthusiasts of visual astronomy, the CDK500 provides vibrant and detailed views of the universe. Its significant aperture and high-quality optical components ensure exceptional viewing of planetary, lunar, and deep-sky objects, enriching every observational experience.\u003c\/p\u003e\n\u003ch3\u003eSpace Situational Awareness (SSA) and Space Domain Awareness (SDA)\u003c\/h3\u003e\n\u003cp\u003eWith its swift and precise repositioning capabilities, the L-500 mount in the CDK500 system is capable of tracking satellites and space debris. However, it's important to note that while the L-series mounts are highly effective for astrophotography and research applications, they might not meet the optimal performance standards required for dedicated SSA\/SDA operations. For those needs, we recommend exploring our T-600 Direct-Drive Gimbal, specifically engineered to exceed the demanding requirements for SSA\/SDA applications, ensuring superior tracking and responsiveness in monitoring and cataloging space objects.\u003c\/p\u003e\n\u003ch3\u003eMount systems\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eMount Weight\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e257 lbs (100 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMax. Load Capacity\u003c\/td\u003e\n\u003ctd\u003e200 lbs (91 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eLatitude Range\u003c\/td\u003e\n\u003ctd\u003e0 to 90 degrees, Northern and Southern hemispheres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCable Management\u003c\/td\u003e\n\u003ctd\u003eEquipment cables can be wired through mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eControl systems\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eControl Electronics\u003c\/td\u003e\n\u003ctd width=\"645\"\u003ePlaneWave Interface dual axis telescope control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eHoming Sensors\u003c\/td\u003e\n\u003ctd\u003eHome position sensors are included allowing the mount can find its home position on power up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eSlew Rate\u003c\/td\u003e\n\u003ctd\u003e20 degrees per second (standard); 50 degrees per second (maximum), both axes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eAccepts 120 VAC. Supplied with 12VDC 15A Regulated Power Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eOptical systems\u003c\/h3\u003e\n\u003ctable width=\"781\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd width=\"136\" height=\"21\"\u003eAperture\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e508 mm (20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e3454 mm (135.98\") or 3947 mm (155.4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.8 or f\/7.77\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e39% of the Primary Mirror Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003ef\/6.8 - 223 mm (8.81 in), f\/7.77 - 269.24 mm (10.6\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMechanical structure \u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eFork Assembly\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eL-500 Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eFork Base\u003c\/td\u003e\n\u003ctd\u003eWelded stainless steel torsion box \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eOptical Tube\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Truss with Carbon Fiber Light Shroud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eInstrument Payload\u003c\/td\u003e\n\u003ctd\u003e200 lbs (91 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMotion control\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eMotor – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eDirect Drive 3 Phase Axial-Flux Torque Motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eEncoder – Azimuth and Altitude\u003c\/td\u003e\n\u003ctd\u003e152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eMotor Torque\u003c\/td\u003e\n\u003ctd\u003eApproximately 20 ft-lbs continuous; 50 ft-lbs peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eDrive Electronics\u003c\/td\u003e\n\u003ctd\u003eIndustrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eTelescope Control Software\u003c\/td\u003e\n\u003ctd\u003ePlaneWave Interface (PWI4). Incorporates PointXP mount modeling software by Dave Rowe. Provides HTTP and ASCOM control interfaces. MaxIm DL is required for camera control when building a pointing model within our PWI4 software.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSystem Performance \u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003ePointing Accuracy\u003c\/td\u003e\n\u003ctd width=\"645\"\u003e\u0026lt;10 arcsecond RMS with PointXP Model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003ePointing Precision\u003c\/td\u003e\n\u003ctd\u003e2 arcseconds at sidereal velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eTracking Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.3 arcseconds over a 5-minute period at sidereal velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003eSystem Natural Frequency\u003c\/td\u003e\n\u003ctd\u003e11 Hz or greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eInduced items\u003c\/h3\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"781\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"136\"\u003e\n\u003ccol width=\"645\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\" width=\"136\"\u003eIncluded Items\u003c\/td\u003e\n\u003ctd width=\"645\"\u003eDovetail Saddle (200919) - The PW wide saddle comes standard with the L-500 mount.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eHeating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOTA Cover - To protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eFlashdrive - Contains PWI4 software for mount control , instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eHardware - Six 1\/2-13 x 1 1\/4″ socket head cap screws to bolt the mount to the pier, or wedge; Six 1\/2-13 washers; One extended length shoulder bolt for RA axis to EQ wedge alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOne 16′ USB cable - To connect the mount to the observatory control computer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eOne 120VAC power cable - To provide power to the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard Allen Key set - For tightening bolts used on the mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"21\"\u003e\n\u003ctd height=\"21\"\u003e\u003c\/td\u003e\n\u003ctd\u003eGamepad - Used for control of the mount tracking speeds for visual observing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":42709286420549,"sku":"200130Q","price":111570.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-cdk500Observatorysystem.jpg?v=1746060010"},{"product_id":"sky-watcher-esprit-150edx-triplet-apo-ota-limited-edition","title":"Sky-Watcher Esprit 150EDX Triplet APO OTA Limited Edition","description":"\u003ch2\u003eNew Sky-Watcher 150EDX APO Telescope - redesigned body with famous Esprit optics\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cem\u003e**Due in late September\/August**\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eHighlights:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAir Spaced Apochromatic Triplet\u003c\/li\u003e\n\u003cli\u003eFPL-53 extra low dispersion glass\u003c\/li\u003e\n\u003cli\u003eZero detectable colour fringing even on bright objects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited optics\u003c\/li\u003e\n\u003cli\u003eFully multi coated lenses\u003c\/li\u003e\n\u003cli\u003e3″ CNC machined 11:1 dual speed linear power focuser – rotatable\u003c\/li\u003e\n\u003cli\u003eIndexed focuser tube\u003c\/li\u003e\n\u003cli\u003eKnife-edge baffled system to enhance contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eSky-Watcher 150mm Esprit 150ED Triplet APO Refractor\u003c\/strong\u003e is a high-end  instrument for astro-photographers seeking quality images that only a telescope of this size and optical design can produce. It's also ideal for extended visual observations of deep-space objects due to its remarkable contrast and light gathering ability.\u003c\/p\u003e\n\u003cp\u003eThe air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.\u003c\/p\u003e\n\u003cp\u003eA 2-element field flattener is available separately to iron out the natural off-axis astigmatism and field curvature of the objective lens, leaving a fully corrected 42mm field of view.  Designed with photography in mind, it sits on two tracks above and below the barrel to prevent flexure with a heavy camera attached, and is fully rotatable to perfectly frame a target on the sensor.\u003c\/p\u003e\n\u003ch3\u003eIn The Box:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e150\/1050 Apochromatic Refractor\u003c\/li\u003e\n\u003cli\u003eFixed Dew Shield\u003c\/li\u003e\n\u003cli\u003e2″ Dielectric Star Diagonal\u003c\/li\u003e\n\u003cli\u003e9×50 Right Angled Erect Image Diagonal\u003c\/li\u003e\n\u003cli\u003eD Style dovetail Bar\u003c\/li\u003e\n\u003cli\u003e2″ to 1.25″ Eyepiece Adaptor\u003c\/li\u003e\n\u003cli\u003eAluminium Foam-Lined Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSWESPRIT150\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eAir spaced Apochromatic Triplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1050mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter of the corrected field\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual Back Focus\u003c\/td\u003e\n\u003ctd\u003e170mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolving Power\u003c\/td\u003e\n\u003ctd\u003e0.80″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStellar Limit Magnitude\u003c\/td\u003e\n\u003ctd\u003e12.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHighest Practical Magnification\u003c\/td\u003e\n\u003ctd\u003e300X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight gathering power (compared to the unaided eye)\u003c\/td\u003e\n\u003ctd\u003e459\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e3″ Crayford dual speed with 2″ and 1.25″ adaptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd\u003e920mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd\u003e15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TSA","offers":[{"title":"Default Title","offer_id":42901998436421,"sku":"SWESPRIT150EDX","price":10599.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/SWESPRIT150EDX-1.jpg?v=1750292227"},{"product_id":"sky-watcher-esprit-120edx-triplet-apo-ota-limited-edition","title":"Sky-Watcher Esprit 120EDX Triplet APO OTA Limited Edition","description":"\u003ch2\u003eNew Sky-Watcher 120DX APO Telescope - redesigned body with famous Esprit optics\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cem\u003e**Due in late July\/August**\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eHighlights:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAir Spaced 120mm Apochromatic Triplet\u003c\/li\u003e\n\u003cli\u003eFPL-53 extra low dispersion glass\u003c\/li\u003e\n\u003cli\u003eZero detectable colour fringing even on bright objects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited optics\u003c\/li\u003e\n\u003cli\u003eFully multi coated lenses\u003c\/li\u003e\n\u003cli\u003e3″ CNC machined 11:1 dual speed linear power focuser – rotatable\u003c\/li\u003e\n\u003cli\u003eIndexed focuser tube\u003c\/li\u003e\n\u003cli\u003eKnife-edge baffled system to enhance contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eSky-Watcher 120mm Esprit 120ED Triplet APO Refractor\u003c\/strong\u003e is a high-end yet portable instrument for astro-photographers seeking quality images that only a telescope of this size and optical design can produce. It's also ideal for extended visual observations of deep-space objects due to its remarkable contrast and light gathering ability.\u003c\/p\u003e\n\u003cp\u003eThe air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.\u003c\/p\u003e\n\u003cp\u003eDesigned with photography in mind, it sits on two tracks above and below the barrel to prevent flexure with a heavy camera attached, and is fully rotatable to perfectly frame a target on the sensor.\u003c\/p\u003e\n\u003ch3\u003eIn The Box:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e120\/840 Apochromatic Refractor\u003c\/li\u003e\n\u003cli\u003eFixed Dew Shield\u003c\/li\u003e\n\u003cli\u003e2″ Dielectric Star Diagonal\u003c\/li\u003e\n\u003cli\u003e9×50 Right Angled Erect Image Diagonal\u003c\/li\u003e\n\u003cli\u003eD Style dovetail Bar\u003c\/li\u003e\n\u003cli\u003e2″ to 1.25″ Eyepiece Adaptor\u003c\/li\u003e\n\u003cli\u003eAluminium Foam-Lined Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable style=\"width: 99.9589%; height: 313.333px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003eSWESPRIT120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Design\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003eAir spaced Apochromatic Triplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eAperture\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e120mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e840mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eDiameter of the corrected field\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eVisual Back Focus\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e225mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eResolving Power\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e1.00″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eStellar Limit Magnitude\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e12.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eHighest Practical Magnification\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e240X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 39.1667px;\"\u003eLight gathering power (compared to the unaided eye)\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 39.1667px;\"\u003e294\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 39.1667px;\"\u003eFocuser\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 39.1667px;\"\u003e3″ Crayford dual speed with 2″ and 1.25″ adaptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e762mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e10kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TSA","offers":[{"title":"Default Title","offer_id":42902271262789,"sku":"SWESPRIT120EDX","price":5249.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/SWESPRIT120EDX-1.jpg?v=1750293215"},{"product_id":"sky-watcher-esprit-100edx-triplet-apo-ota-limited-edition","title":"Sky-Watcher Esprit 100EDX Triplet APO OTA Limited Edition","description":"\u003ch2\u003eNew Sky-Watcher 100EDX APO Telescope - redesigned body with famous Esprit optics\u003c\/h2\u003e\n\u003ch3\u003eHighlights:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAir Spaced 100mm Apochromatic Triplet (APO)\u003c\/li\u003e\n\u003cli\u003eFPL-53 extra low dispersion glass\u003c\/li\u003e\n\u003cli\u003eZero detectable colour fringing even on bright objects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited optics\u003c\/li\u003e\n\u003cli\u003eFully multi coated lenses\u003c\/li\u003e\n\u003cli\u003e3″ CNC machined 11:1 dual speed linear power focuser – rotatable\u003c\/li\u003e\n\u003cli\u003eIndexed focuser tube\u003c\/li\u003e\n\u003cli\u003eKnife-edge baffled system to enhance contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eSky-Watcher 100mm Esprit 1000EDX Triplet APO Refractor\u003c\/strong\u003e is a high-end instrument for astro-photographers seeking quality images, yet also need a telescope that can be easily transported.\u003c\/p\u003e\n\u003cp\u003eThe air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA 2-element field flattener is available separately to iron out the natural off-axis astigmatism and field curvature of the objective lens, leaving a fully corrected 42mm field of view.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn The Box:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e100\/550 Apochromatic Refractor\u003c\/li\u003e\n\u003cli\u003eFixed Dew Shield\u003c\/li\u003e\n\u003cli\u003e2″ Dielectric Star Diagonal\u003c\/li\u003e\n\u003cli\u003e9×50 Right Angled Erect Image Diagonal\u003c\/li\u003e\n\u003cli\u003eD Style dovetail Bar\u003c\/li\u003e\n\u003cli\u003e2″ to 1.25″ Eyepiece Adaptor\u003c\/li\u003e\n\u003cli\u003eAluminium Foam-Lined Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable style=\"width: 99.9589%; height: 313.333px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003eSWESPRIT100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Design\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003eAir spaced Apochromatic Triplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eAperture\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e550mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003ef\/5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eDiameter of the corrected field\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eVisual Back Focus\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e185mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eResolving Power\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e1.20″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eStellar Limit Magnitude\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e12.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eHighest Practical Magnification\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e200X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 39.1667px;\"\u003eLight gathering power (compared to the unaided eye)\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 39.1667px;\"\u003e204\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 39.1667px;\"\u003eFocuser\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 39.1667px;\"\u003e3″ Crayford dual speed with 2″ and 1.25″ adaptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e465mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e6.15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TSA","offers":[{"title":"Default Title","offer_id":42902387392581,"sku":"SWESPRIT100EDX","price":3249.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/SWESPRIT100EDX-1.jpg?v=1750294156"},{"product_id":"sky-watcher-esprit-80edx-triplet-apo-ota-limited-edition","title":"Sky-Watcher Esprit 80EDX Triplet APO OTA Limited Edition","description":"\u003ch2\u003eNew Sky-Watcher 80EDX APO Telescope - redesigned body with famous Esprit optics\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cem\u003e**Have a chat with us about availability**\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eHighlights:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAir Spaced 80mm Apochromatic Triplet (APO)\u003c\/li\u003e\n\u003cli\u003eFPL-53 extra low dispersion glass\u003c\/li\u003e\n\u003cli\u003eZero detectable colour fringing even on bright objects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited optics\u003c\/li\u003e\n\u003cli\u003eFully multi coated lenses\u003c\/li\u003e\n\u003cli\u003e3″ CNC machined 11:1 dual speed linear power focuser – rotatable\u003c\/li\u003e\n\u003cli\u003eIndexed focuser tube\u003c\/li\u003e\n\u003cli\u003eKnife-edge baffled system to enhance contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eSky-Watcher 80mm Esprit 80EDX Triplet APO Refractor\u003c\/strong\u003e is a highly portable instrument, while still having the imaging capabilities to deliver deep-sky astro photos of stunning quality. It's especially suited for those seeking wide field images and visual observations. \u003c\/p\u003e\n\u003cp\u003eThe air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.\u003c\/p\u003e\n\u003cp\u003eA 2-element field flattener is available separately to iron out the natural off-axis astigmatism and field curvature of the objective lens, leaving a fully corrected 42mm field of view.\u003c\/p\u003e\n\u003ch3\u003eIn The Box:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e80\/400 Apochromatic Refractor\u003c\/li\u003e\n\u003cli\u003eRotatable focuser adapter\u003c\/li\u003e\n\u003cli\u003eCollapsible Dew Shield\u003c\/li\u003e\n\u003cli\u003e2″ Dielectric Star Diagonal\u003c\/li\u003e\n\u003cli\u003e9×50 Right Angled Erect Image Diagonal\u003c\/li\u003e\n\u003cli\u003eD Style dovetail Bar\u003c\/li\u003e\n\u003cli\u003e2″ to 1.25″ Eyepiece Adaptor\u003c\/li\u003e\n\u003cli\u003eAluminium Foam-Lined Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable style=\"width: 99.9589%; height: 313.333px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003eSWESPRIT80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Design\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003eAir spaced Apochromatic Triplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eAperture\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e800mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003ef\/5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eDiameter of the corrected field\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e33mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eVisual Back Focus\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e160mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eResolving Power\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e1.50″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eStellar Limit Magnitude\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e11.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eHighest Practical Magnification\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e160X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 39.1667px;\"\u003eLight gathering power (compared to the unaided eye)\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 39.1667px;\"\u003e131\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1667px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 39.1667px;\"\u003eFocuser\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 39.1667px;\"\u003e3″ Crayford dual speed with 2″ and 1.25″ adaptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e380mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 50.8762%; height: 19.5833px;\"\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd style=\"width: 46.6634%; height: 19.5833px;\"\u003e3.97g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TSA","offers":[{"title":"Default Title","offer_id":42902445719621,"sku":"SWESPRIT80EDX","price":2499.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/SWESPRIT80EDX-1.jpg?v=1750294766"},{"product_id":"sky-watcher-125-250-hac125-dx-photo-catadioptric-astrograph","title":"Sky-Watcher 125\/250 HAC125 DX Photo Catadioptric Astrograph","description":"\u003cp\u003e\u003cstrong\u003e\u003cem\u003eUpdated DX Model!\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHonders Advanced Catadioptric optical design\u003c\/li\u003e\n\u003cli\u003eRadiant Aluminium Quartz (RAQ)™ mirror coatings\u003c\/li\u003e\n\u003cli\u003eWide-open 250mm focal length\u003c\/li\u003e\n\u003cli\u003eFAST f\/2 focal ratio\u003c\/li\u003e\n\u003cli\u003e125mm aperture diameter\u003c\/li\u003e\n\u003cli\u003eLightweight 3.8kg\u003c\/li\u003e\n\u003cli\u003e16mm image circle\u003c\/li\u003e\n\u003cli\u003eCollimatable primary mirror cell\u003c\/li\u003e\n\u003cli\u003eRear primary mirror heliacal focuser\u003c\/li\u003e\n\u003cli\u003eClamshell rings with a V-style dovetail\u003c\/li\u003e\n\u003cli\u003eDual finderscope brackets\u003c\/li\u003e\n\u003cli\u003e1.25-inch barrel\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: 1.25-inch adapter, male and female M42x0.75\u003cbr\u003eadapters, dew shield\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThis new HAC125DX (Honders Advanced Catadioptric) Minigraph is the smallest, fastest telescope dedicated to astrophotography available today. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis type of telescope, called an astrograph, is designed from the start to take photos of the night sky. You don't look through it, instead it connects to a dedicated astronomy camera from ZWO, QHY and others. This updated \"DX\" model features a rear focussing mechanism. The 16mm imaging circle well suited for IMX533 and IMX585 based cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eIt's fast too, at just f\/2.0. This means shorter exposure times and you won't even need to worry about autoguiding.  \u003c\/em\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 50%;\"\u003e \u003ccol style=\"width: 50%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOptical Specifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Design\u003c\/th\u003e\n\u003ctd\u003eHonders Advanced Catadioptric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMirror Coating\u003c\/th\u003e\n\u003ctd\u003eRadiant Aluminum Quartz (RAQ)™ Coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReflectivity\u003c\/th\u003e\n\u003ctd\u003e0.94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMirror Type (Monolithic\/Conical\/Fused conical)\u003c\/th\u003e\n\u003ctd\u003eMangin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrector Coating\u003c\/th\u003e\n\u003ctd\u003eHTMC™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGlass Type\u003c\/th\u003e\n\u003ctd\u003eBorosilicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Aperture (mm)\u003c\/th\u003e\n\u003ctd\u003e125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eF\/Ratio\u003c\/th\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length (mm)\u003c\/th\u003e\n\u003ctd\u003e250mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eImage Circle\u003c\/th\u003e\n\u003ctd\u003e16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSecondary Obstruction by Diameter\u003c\/th\u003e\n\u003ctd\u003e53mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSecondary Obstruction by Area\u003c\/th\u003e\n\u003ctd\u003e0.425\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary cell supports (how many support points)\u003c\/th\u003e\n\u003ctd\u003eRear Support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Quality\u003c\/th\u003e\n\u003ctd\u003eDiffraction limited (1\/4 wave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCollimatable Cell\u003c\/th\u003e\n\u003ctd\u003ePrimary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eMechanical Specifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocuser Type\u003c\/th\u003e\n\u003ctd\u003ePrimary focus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocuser Size\u003c\/th\u003e\n\u003ctd\u003ePrimary Mirror Helical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocuser: Dual or Single Speed\u003c\/th\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompression Ring\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Tube length\u003c\/th\u003e\n\u003ctd\u003e40cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Tube diameter\u003c\/th\u003e\n\u003ctd\u003e16cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eAccessories\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded finder\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting Hardware\u003c\/th\u003e\n\u003ctd\u003eClamshell rings with V-style dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdditional Accessories\u003c\/th\u003e\n\u003ctd\u003e1.25\" \u0026amp; M42x0.75 camera adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManual\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCase\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eObservational Info\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDawes Limit\u003c\/th\u003e\n\u003ctd\u003e0.93\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRayleigh Limit\u003c\/th\u003e\n\u003ctd\u003e1.12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLimiting Magnitude\u003c\/th\u003e\n\u003ctd\u003e12.96\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TSA","offers":[{"title":"Default Title","offer_id":42982852329541,"sku":"SW125HACDX","price":1199.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/SW_HAC125DX_OTA_1.jpg?v=1751524357"},{"product_id":"founder-optics-draco-62-quintuplet-astrophotography-refractor","title":"Founder Optics Draco 62 Quintuplet Astrophotography Refractor","description":"\u003ch1 style=\"text-align: center;\"\u003e\u003cem\u003eDesigned in Japan, Made in Taiwan \u003c\/em\u003e\u003c\/h1\u003e\n\u003ch2\u003eSharp Optical System \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFive-element ED APO lens delivers sharp, flat, colour-free images across the field.\u003c\/li\u003e\n\u003cli\u003e0.83× reducer provides a fast f\/3.9 system ideal for deep-sky astrophotography.\u003c\/li\u003e\n\u003cli\u003e44mm image circle supports full-frame and APS-C sensors with no vignetting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePrecision focusing \u0026amp; mechanical design throughout\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated 2\" dual-speed focuser with travel indicator, motor-ready design.\u003c\/li\u003e\n\u003cli\u003eBuilt-in tilt adjustment for fast and accurate optical axis correction.\u003c\/li\u003e\n\u003cli\u003eThreaded connections minimize flexure and focuser sag.\u003c\/li\u003e\n\u003cli\u003e360° rotator with scale allows precise framing for astrophotography.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMounting \u0026amp; use\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eComes standard with handlebar, tube rings, dovetail, and mounting rails.\u003c\/li\u003e\n\u003cli\u003eQuick-lock dew shield ring provides firm, secure attachment.\u003c\/li\u003e\n\u003cli\u003eSupports both astrophotography and visual observing use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTough, for the harshest environments\u003c\/h2\u003e\n\u003cp\u003eNitrogen-filled optical tube is IP67-rated: waterproof, fogproof, and sealed against dust.\u003cbr\u003eLightweight design: 2.4kg OTA (3.2kg with standard accessories).\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/FUmiv80l5E4?si=LMDxM5LQAE5VUtKT\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eED APO Lens\u003c\/strong\u003e\u003cbr\u003eFive-element Air-space design, using ED APO lens level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDedicated 0.83x Reducer-f\/3.9\u003c\/strong\u003e\u003cbr\u003eFast ratio f\/3.9 can satisfy most deep sky astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWaterproof \u0026amp; Fogproof\u003c\/strong\u003e\u003cbr\u003eNitrogen injected for waterproof IP67.\u003c\/p\u003e\n\u003cp\u003eHydrophobic coating on the air surface of the lens. Removes issues about temperature difference between indoors and outdoors found on some telescopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUnique Collimation Adjustment\u003c\/strong\u003e\u003cbr\u003eSpecial design collimation function. Built-in ball bearing and a spring structure, simplifying the 12 screws into two. Makes for adjustment and accurate alignment\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMechanical Stability\u003c\/strong\u003e\u003cbr\u003eThreaded components for stability. Reduces the risk of unwanted focuser movement caused by the focuser sagging during installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility with a wide range of Camera Adapters\u003c\/strong\u003e\u003cbr\u003eSupports ZWO cameras, provides M54, M48 adapters, and can also be used with Founder Optics T2 ring mount for all camera types\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRack \u0026amp; Pinion focuser\u003c\/strong\u003e\u003cbr\u003eOne piece design- Rack \u0026amp; Pinion focuser and draw tube. This integrated structure reduces the mechanical clearance and assembly tolerance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLight Weight\u003c\/strong\u003e\u003cbr\u003eOnly weighs 2.4kg. It’s 3.2kg including the tube ring, handle, and dovetail plate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal range of mounting accessories\u003c\/strong\u003e\u003cbr\u003eMulti-functional handle, combined with the tube ring and dovetail plate. Comes with tactical slide rails to provide multiple connection options\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuick Dew Shield Lock Ring\u003c\/strong\u003e\u003cbr\u003eProvides a quick dew shield locking ring, which can tighten evenly, firmly and quickly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVisual Observation and Imaging\u003c\/strong\u003e\u003cbr\u003eSupport for visual astronomical observations and imaging\u003c\/p\u003e\n\u003ch2\u003eSpecifications:\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOptical System:\u003c\/strong\u003e Quintuple, air spaced ED APO lens\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eClear Aperture:\u003c\/strong\u003e 62mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFocal Length:\u003c\/strong\u003e 300mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFocal Ratio:\u003c\/strong\u003e f\/4.8, f\/3.8 with 0.83x reducer\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImage Circle:\u003c\/strong\u003e Ø44mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFocuser: \u003c\/strong\u003e2’’ Dual-Speed Rack \u0026amp; Pinion Focuser, \u003cbr\u003e                Helical Rotation Type\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight OTA:\u003c\/strong\u003e 2.4kg\u003cbr\u003e\u003cstrong\u003eWeight with Tube Ring, dovetail plate, handle and mounting rail:\u003c\/strong\u003e 3.2kg\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptical system:\u003c\/strong\u003e 5+2 =7 Elements, Quintuplet refractor+ 0.83x reducer\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain lens:\u003c\/strong\u003e Quintuplet, Air-spaced ED APO lens \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImage circle: \u003c\/strong\u003e44mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBack focus distance:\u003c\/strong\u003e 55mm\u003c\/p\u003e\n\u003ch2\u003eIncluded in the package:\u003c\/h2\u003e\n\u003cp\u003eDraco 62 Quintuplet Astrophotography Refractor\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e0.83x Focal Reducer for Draco 62\u003c\/li\u003e\n\u003cli\u003eM48 Adapter for Draco 62\u003c\/li\u003e\n\u003cli\u003eM54 Adapter for Draco 62\u003c\/li\u003e\n\u003cli\u003e1.25'' 90 degree Mirror Dielectric Diagonal\u003c\/li\u003e\n\u003cli\u003eDiagonal Adapter\u003c\/li\u003e\n\u003cli\u003eTube Ring\u003c\/li\u003e\n\u003cli\u003eDovetail Plate\u003c\/li\u003e\n\u003cli\u003eTactical rail\u003c\/li\u003e\n\u003cli\u003eProduct Manual\u003c\/li\u003e\n\u003cli\u003eQuality certification card\u003c\/li\u003e\n\u003cli\u003eLarge hard-shelled carry backpack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Founder Optics","offers":[{"title":"Default Title","offer_id":43470644314181,"sku":"draco62","price":1799.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/draco_62_1.png?v=1756276384"},{"product_id":"vixen-vsd90ss-telescope-ota-90mm-495mm-f-5-5-no-eyepiece","title":"Vixen VSD90SS Telescope OTA 90mm 495mm f\/5.5 (no eyepiece)","description":"\u003cp class=\"fw-bold mb-1 at-glance-hdr\"\u003e\u003cstrong\u003eAt a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVixen's flagship model with outstanding performance and ease of use for visual observation and astrophotography.\u003c\/li\u003e\n\u003cli\u003eFeatures a five-group-five-element Astrography with a fast focal ratio.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable width=\"414\" class=\"table table-striped table-bordered\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eObjective Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003eFive-group five-element SD Apochromat, AS coatings\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eEffective Aperture\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003e90mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eFocal Length (Focal Ratio)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003e495mm (F5.5)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eResolving Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003e1.29 arc seconds・\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eLimiting Magnitude\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003e11.5\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eLight Gathering Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003e165X unaided eye\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eImage Circle\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003e60mmφ (Over 90% illumination at the round edge)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eOptical Tube Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003e115mm dia. X 600mm long (476mm long for storage)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\n\u003cp\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"197\"\u003e\n\u003cp\u003e4.3kg\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\u003cstrong\u003eFinderscope\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"197\"\u003eNot included, 7X50mm Finder with illuminated reticle, 50mm XY Finder bracket II sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\u003cstrong\u003eFocusing System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"197\"\u003eRack-and-pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\u003cstrong\u003eAccessory Threads \/ Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"197\"\u003eThreads\/ 84mm (pitch 1mm), 60mm (pitch 1.0mm), 42mm for T-ringPush-fit \/ 60.2mm, 50.8mm, and 31.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\u003cstrong\u003eEyepiece (31.7mm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"197\"\u003eNot included, SLV series of eyepieces sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\u003cstrong\u003ePlates and\/or Tube Rings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot included, VSD Tube Ring 115S, Dual Slide Bar sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"217\"\u003e\u003cstrong\u003eProvided Accessories\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"197\"\u003eVSD60.2 to 50.8 Adapter, 2mm and 1.5mm Allen wrenches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"CR Kennedy","offers":[{"title":"Default Title","offer_id":43676701753413,"sku":"VX26131","price":8695.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Vixen_VSD90SS_Telescope_OTA_90mm_495mm_f5.5_no_eyepiece.jpg?v=1758588027"},{"product_id":"planewave-fsct8-fast-8-inch-schmidt-cassegrain-telescope","title":"PlaneWave FSCT8 Fast SCT Astrograph","description":"\u003cdiv class=\"bintel-fsct8-page\"\u003e\n\n\u003cstyle\u003e\n\/* ============================================================ *\/\n\/* S0  SCOPE + TOKENS + BASE                                     *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page {\n  --black: #000000;\n  --ink: #1D1D1F;\n  --paper: #F5F5F7;\n  --white: #FFFFFF;\n  --mute: #86868B;\n  --line: #D2D2D7;\n  --link: #0066CC;\n  --accent: #1B3A6B;\n  --radius: 22px;\n  --radius-lg: 28px;\n  font-family: -apple-system, BlinkMacSystemFont, \"SF Pro Display\", \"SF Pro\", \"Helvetica Neue\", Helvetica, Arial, sans-serif;\n  font-weight: 400;\n  color: var(--ink);\n  background: var(--white);\n  line-height: 1.47;\n  letter-spacing: -0.003em;\n  -webkit-font-smoothing: antialiased;\n  -moz-osx-font-smoothing: grayscale;\n  overflow-x: hidden;\n}\n\/* blanket img guard (Rule 6.1) *\/\n.bintel-fsct8-page img { max-width: 100%; height: auto; }\n.fsct8-page img { max-width: 100%; height: auto; }\n.bintel-fsct8-page .fsct8-section { padding: 120px 22px; }\n@media (max-width: 640px) { .bintel-fsct8-page .fsct8-section { padding: 80px 22px; } }\n.bintel-fsct8-page .fsct8-on-dark { background: var(--black); color: var(--white); }\n.bintel-fsct8-page .fsct8-paper { background: var(--paper); }\n\n\/* ============================================================ *\/\n\/* S1  TYPOGRAPHY SCALE                                          *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-hero-h2 { font-size: clamp(60px, 9vw, 112px); font-weight: 600; line-height: 1.04; letter-spacing: -0.025em; color: var(--ink); }\n.bintel-fsct8-page .fsct8-h2 { font-size: clamp(40px, 5.5vw, 72px); font-weight: 600; line-height: 1.07; letter-spacing: -0.022em; color: var(--ink); }\n.bintel-fsct8-page .fsct8-lead { font-size: clamp(19px, 1.6vw, 24px); letter-spacing: -0.009em; color: var(--ink); }\n.bintel-fsct8-page .fsct8-body { font-size: 17px; letter-spacing: -0.005em; line-height: 1.5; color: var(--ink); }\n.bintel-fsct8-page .fsct8-eyebrow { font-size: 17px; font-weight: 600; letter-spacing: -0.005em; color: var(--mute); }\n.bintel-fsct8-page .fsct8-mute { color: var(--mute); }\n.bintel-fsct8-page .fsct8-on-dark .fsct8-mute { color: #6E6E73; }\n.bintel-fsct8-page .fsct8-grad {\n  background: linear-gradient(90deg, var(--white) 0%, var(--white) 35%, var(--accent) 100%);\n  -webkit-background-clip: text; background-clip: text;\n  -webkit-text-fill-color: transparent; color: transparent; display: inline-block;\n}\n@media (max-width: 380px) { .bintel-fsct8-page .fsct8-hero-h2 { font-size: 42px; } }\n\n\/* ============================================================ *\/\n\/* S2  STATS STRIP                                               *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1100px; margin: 0 auto; }\n.bintel-fsct8-page .fsct8-stat-num { font-size: clamp(32px, 3.6vw, 52px); font-weight: 600; line-height: 1.05; letter-spacing: -0.02em; color: var(--ink); white-space: nowrap; }\n.bintel-fsct8-page .fsct8-stat-lbl { font-size: 15px; color: var(--mute); }\n.bintel-fsct8-page .fsct8-stat-cap { font-size: 13px; color: var(--mute); margin-top: 4px; }\n@media (max-width: 1024px) { .bintel-fsct8-page .fsct8-stats { grid-template-columns: repeat(2, 1fr); } }\n@media (max-width: 640px) { .bintel-fsct8-page .fsct8-stat-num { font-size: 30px; } }\n@media (max-width: 380px) { .bintel-fsct8-page .fsct8-stat-num { font-size: 26px; } }\n\n\/* ============================================================ *\/\n\/* S3  PULL QUOTE                                                *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-pullquote { text-align: center; }\n.bintel-fsct8-page .fsct8-pullquote p { font-size: clamp(28px, 3.4vw, 48px); font-weight: 600; line-height: 1.15; letter-spacing: -0.018em; color: var(--ink); max-width: 920px; margin: 0 auto; padding: 20px 0; }\n@media (max-width: 640px) { .bintel-fsct8-page .fsct8-pullquote { padding-top: 80px; padding-bottom: 80px; } }\n\n\/* ============================================================ *\/\n\/* S4  BENTO GRID                                                *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; max-width: 1100px; margin: 0 auto; }\n.bintel-fsct8-page .fsct8-bento-card { background: #1C1C1E; border-radius: 28px; padding: 44px; min-height: 320px; display: flex; flex-direction: column; justify-content: flex-start; color: var(--white); transition: transform 0.3s ease; }\n.bintel-fsct8-page .fsct8-bento-card:hover { transform: translateY(-2px); }\n.bintel-fsct8-page .fsct8-bento-card .fsct8-eyebrow { color: #98989D; }\n.bintel-fsct8-page .fsct8-bento-h { font-size: 28px; font-weight: 600; color: var(--white); margin: 8px 0 12px; }\n.bintel-fsct8-page .fsct8-big-number { font-size: clamp(80px, 10vw, 140px); font-weight: 600; line-height: 1; letter-spacing: -0.03em; color: var(--white); }\n.bintel-fsct8-page .fsct8-span-2 { grid-column: span 2; }\n.bintel-fsct8-page .fsct8-span-3 { grid-column: span 3; }\n.bintel-fsct8-page .fsct8-span-4 { grid-column: span 4; min-height: 380px; }\n@media (max-width: 1024px) { .bintel-fsct8-page .fsct8-bento { grid-template-columns: repeat(2, 1fr); } .bintel-fsct8-page .fsct8-span-2, .bintel-fsct8-page .fsct8-span-3, .bintel-fsct8-page .fsct8-span-4 { grid-column: span 1; } }\n@media (max-width: 640px) {\n  .bintel-fsct8-page .fsct8-bento { display: flex; grid-template-columns: none; gap: 14px; overflow-x: auto; overflow-y: hidden; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; -ms-overflow-style: none; margin: 0 -22px; padding: 4px 22px; scroll-padding-left: 22px; }\n  .bintel-fsct8-page .fsct8-bento::-webkit-scrollbar { display: none; }\n  .bintel-fsct8-page .fsct8-bento-card, .bintel-fsct8-page .fsct8-span-2, .bintel-fsct8-page .fsct8-span-3, .bintel-fsct8-page .fsct8-span-4 { grid-column: auto; flex: 0 0 85%; scroll-snap-align: start; min-height: 300px; padding: 28px; }\n}\n\n\/* ============================================================ *\/\n\/* S5  SPLIT BLOCK                                               *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; max-width: 1100px; margin: 0 auto; }\n.bintel-fsct8-page .fsct8-split-img { width: 100%; border-radius: 28px; max-height: 700px; object-fit: cover; }\n@media (max-width: 900px) { .bintel-fsct8-page .fsct8-split { grid-template-columns: 1fr; text-align: center; } .bintel-fsct8-page .fsct8-split-text { order: 1; } .bintel-fsct8-page .fsct8-split-img { order: 2; } }\n\n\/* ============================================================ *\/\n\/* S6  CINEMATIC FULL-BLEED                                      *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-cinema { padding: 120px 0 0; text-align: center; }\n.bintel-fsct8-page .fsct8-cinema-cap { max-width: 820px; margin: 0 auto 56px; padding: 0 22px; }\n.bintel-fsct8-page .fsct8-cinema-img { width: 100%; display: block; max-height: 700px; object-fit: cover; }\n@media (max-width: 640px) { .bintel-fsct8-page .fsct8-cinema { padding-top: 80px; } .bintel-fsct8-page .fsct8-cinema-img { max-height: 70vh; object-fit: cover; } }\n\n\/* ============================================================ *\/\n\/* S7  SPECS TABLE (single, div grid)                            *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-specs { max-width: 980px; margin: 0 auto; font-size: 17px; color: var(--ink); }\n.bintel-fsct8-page .fsct8-specs-row { display: grid; grid-template-columns: 38% 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); align-items: start; }\n.bintel-fsct8-page .fsct8-specs-label { color: var(--mute); font-weight: 400; font-size: 17px; line-height: 1.5; }\n.bintel-fsct8-page .fsct8-specs-value { color: var(--ink); font-weight: 400; font-size: 17px; line-height: 1.5; overflow-wrap: anywhere; }\n.bintel-fsct8-page .fsct8-specs-cat { padding: 36px 0 14px; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink); }\n@media (max-width: 640px) { .bintel-fsct8-page .fsct8-specs-row { font-size: 15px; padding: 14px 0; } }\n@media (max-width: 380px) { .bintel-fsct8-page .fsct8-specs-row { font-size: 13.5px; padding: 10px 0; } }\n\n\/* ============================================================ *\/\n\/* S9  HIGHLIGHTS                                                *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 48px; max-width: 1000px; margin: 0 auto; }\n.bintel-fsct8-page .fsct8-highlight-item { display: flex; gap: 14px; align-items: flex-start; }\n.bintel-fsct8-page .fsct8-tick { width: 24px; height: 24px; flex-shrink: 0; color: var(--ink); margin-top: 2px; }\n@media (max-width: 700px) { .bintel-fsct8-page .fsct8-highlights { grid-template-columns: 1fr; } }\n\n\/* ============================================================ *\/\n\/* S10  ANCHOR LINK                                              *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-link { color: var(--link); font-size: 17px; display: inline-flex; align-items: center; gap: 4px; padding: 10px 4px; min-height: 44px; text-decoration: none; }\n.bintel-fsct8-page .fsct8-link svg { width: 18px; height: 18px; }\n\n\/* ============================================================ *\/\n\/* S11  CLOSING + PERKS ROW                                      *\/\n\/* ============================================================ *\/\n.bintel-fsct8-page .fsct8-closing { text-align: center; }\n.bintel-fsct8-page .fsct8-closing h2 { max-width: 820px; margin: 0 auto 56px; }\n.bintel-fsct8-page .fsct8-perks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; }\n.bintel-fsct8-page .fsct8-perk-t { font-size: 17px; font-weight: 600; color: var(--ink); }\n.bintel-fsct8-page .fsct8-perk-s { font-size: 14px; color: var(--mute); margin-top: 4px; }\n@media (max-width: 1024px) { .bintel-fsct8-page .fsct8-perks { grid-template-columns: repeat(2, 1fr); } }\n\n\/* Specs section heading *\/\n.bintel-fsct8-page .fsct8-specs-heading { text-align: center; margin-bottom: 56px; }\n\u003c\/style\u003e\n\n\u003c!-- HERO --\u003e\n\u003csection class=\"fsct8-section fsct8-on-dark\" style=\"text-align:center;\"\u003e\n  \u003cdiv style=\"max-width:900px;margin:0 auto;\"\u003e\n    \u003cdiv class=\"fsct8-eyebrow\" style=\"color:#98989D;margin-bottom:24px;\"\u003eObservable Space FSCT8 — Fast 8-Inch Schmidt-Cassegrain\u003c\/div\u003e\n    \u003ch2 class=\"fsct8-hero-h2\" style=\"color:var(--white);margin-bottom:32px;\"\u003e\n      \u003cspan class=\"fsct8-grad\"\u003eThe fast SCT, reinvented.\u003c\/span\u003e\u003cbr\u003e8 inches. f\/2.8. Carry-on weight.\n    \u003c\/h2\u003e\n    \u003cp class=\"fsct8-lead\" style=\"color:#A1A1A6;max-width:680px;margin:0 auto 40px;\"\u003eThe Observable Space FSCT8 is the first native f\/2.8 Schmidt-Cassegrain ever built in an 8-inch form factor. A 42 mm image circle, fused silica quartz mirrors, and a 267 mm carbon-fibre OTA under 9 kg — designed from the optical axis out for astrophotographers who demand observatory results without the observatory.\u003c\/p\u003e\n    \u003cdiv style=\"display:flex;gap:20px;justify-content:center;flex-wrap:wrap;\"\u003e\n      \u003ca href=\"#fsct8-features\" class=\"fsct8-link\" style=\"color:#98CBFF;\"\u003eExplore features\n        \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003c\/a\u003e\n      \u003ca href=\"#fsct8-specs\" class=\"fsct8-link\" style=\"color:#98CBFF;\"\u003eView specifications\n        \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- STATS STRIP --\u003e\n\u003csection class=\"fsct8-section fsct8-paper\"\u003e\n  \u003cdiv class=\"fsct8-stats\"\u003e\n    \u003cdiv class=\"fsct8-stat\"\u003e\n      \u003cdiv class=\"fsct8-stat-num\"\u003ef\/2.8\u003c\/div\u003e\n      \u003cdiv class=\"fsct8-stat-lbl\"\u003efocal ratio\u003c\/div\u003e\n      \u003cdiv class=\"fsct8-stat-cap\"\u003e13x faster than f\/10\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-stat\"\u003e\n      \u003cdiv class=\"fsct8-stat-num\"\u003e42\u003c\/div\u003e\n      \u003cdiv class=\"fsct8-stat-lbl\"\u003emm image circle\u003c\/div\u003e\n      \u003cdiv class=\"fsct8-stat-cap\"\u003e4°+ field of view\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-stat\"\u003e\n      \u003cdiv class=\"fsct8-stat-num\"\u003e\u0026lt;9\u003c\/div\u003e\n      \u003cdiv class=\"fsct8-stat-lbl\"\u003ekg total weight\u003c\/div\u003e\n      \u003cdiv class=\"fsct8-stat-cap\"\u003eUnder 20 lb\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-stat\"\u003e\n      \u003cdiv class=\"fsct8-stat-num\"\u003e6.2\u003c\/div\u003e\n      \u003cdiv class=\"fsct8-stat-lbl\"\u003eμm RMS across field\u003c\/div\u003e\n      \u003cdiv class=\"fsct8-stat-cap\"\u003eSharp stars, edge to edge\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- PULL QUOTE --\u003e\n\u003csection class=\"fsct8-section fsct8-pullquote\"\u003e\n  \u003cp\u003eEvery clear night is too short. \u003cspan class=\"fsct8-mute\"\u003eThe FSCT8 makes sure you get the most out of every hour of it.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003c!-- BENTO FEATURES --\u003e\n\u003csection class=\"fsct8-section fsct8-on-dark\" id=\"fsct8-features\"\u003e\n  \u003cdiv class=\"fsct8-bento\"\u003e\n    \u003cdiv class=\"fsct8-bento-card fsct8-span-3\"\u003e\n      \u003cdiv class=\"fsct8-eyebrow\"\u003eOptical speed\u003c\/div\u003e\n      \u003ch3 class=\"fsct8-bento-h\"\u003ef\/2.8 native. The SCT form factor finally fast.\u003c\/h3\u003e\n      \u003cp class=\"fsct8-body\"\u003eA conventional 8-inch SCT runs at f\/10. The FSCT8 runs at f\/2.8 natively — no reducer stacks, no optical compromises. That is a 13-fold increase in photon-gathering speed. A four-hour integration target becomes roughly 20 minutes of effective exposure. For imagers working under Australian skies with limited clear nights, this is the most impactful single step up possible.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-bento-card fsct8-span-3\"\u003e\n      \u003cdiv class=\"fsct8-big-number\"\u003e42\u003c\/div\u003e\n      \u003cp class=\"fsct8-body\"\u003emm fully illuminated image circle. Sharp stars across the entire field at under 6.2 μm RMS — covering APS-C and most medium-format sensors with no vignetting.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-bento-card fsct8-span-2\"\u003e\n      \u003cdiv class=\"fsct8-eyebrow\"\u003eMirrors\u003c\/div\u003e\n      \u003ch3 class=\"fsct8-bento-h\"\u003eQuartz mirrors. Focus doesn’t move.\u003c\/h3\u003e\n      \u003cp class=\"fsct8-body\"\u003ePrimary (210 mm) and secondary (114 mm) mirrors are both fused silica quartz — the same glass used in research-grade observatories. Near-zero thermal expansion means the focus point does not drift as temperature drops. Your collimation is still correct at 3 am.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-bento-card fsct8-span-2\"\u003e\n      \u003cdiv class=\"fsct8-eyebrow\"\u003eStructure\u003c\/div\u003e\n      \u003ch3 class=\"fsct8-bento-h\"\u003e267 mm OTA. Fits where full-size SCTs don’t.\u003c\/h3\u003e\n      \u003cp class=\"fsct8-body\"\u003eThe carbon-fibre upper cage is rigid, thermally stable, and keeps total OTA length at just 267 mm. That is shorter than many refractors. It mounts on mid-range equatorial platforms and travels as carry-on — without sacrificing the optical performance of a full 8-inch system.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-bento-card fsct8-span-2\"\u003e\n      \u003cdiv class=\"fsct8-eyebrow\"\u003eCorrector\u003c\/div\u003e\n      \u003ch3 class=\"fsct8-bento-h\"\u003eFlat field. Corner to corner. No caveats.\u003c\/h3\u003e\n      \u003cp class=\"fsct8-body\"\u003eThe 88 mm broadband AR-coated corrector lens flattens the focal plane and holds sub-6.2 μm RMS optical performance across the full 42 mm image circle — from dead-centre to the corner of a full APS-C sensor.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-bento-card fsct8-span-3\"\u003e\n      \u003cdiv class=\"fsct8-eyebrow\"\u003eBack focus and image scale\u003c\/div\u003e\n      \u003ch3 class=\"fsct8-bento-h\"\u003eYour full imaging train. No extensions required.\u003c\/h3\u003e\n      \u003cp class=\"fsct8-body\"\u003eA 100 mm back focus from the mounting surface accommodates camera, filter wheel, electronic focuser, and off-axis guider without extension tubes. The 2.75 μm per arcsecond image scale is matched to modern small-pixel CMOS sensors — making the most of every pixel in the frame.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-bento-card fsct8-span-3\"\u003e\n      \u003cdiv class=\"fsct8-eyebrow\"\u003eObservable Space\u003c\/div\u003e\n      \u003ch3 class=\"fsct8-bento-h\"\u003ePurpose-built for imaging. Not retrofitted for it.\u003c\/h3\u003e\n      \u003cp class=\"fsct8-body\"\u003eObservable Space — the PlaneWave and OurSky collaboration — built the FSCT8 as an imaging instrument from the ground up. Mirror material, corrector geometry, tube construction, back focus distance: every decision serves the astrophotographer. This is not a visual SCT with a reducer bolted on. It is a dedicated astrograph that fits in a carry-on bag.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- SPLIT: telescope image --\u003e\n\u003csection class=\"fsct8-section\"\u003e\n  \u003cdiv class=\"fsct8-split\"\u003e\n    \u003cdiv class=\"fsct8-split-text\"\u003e\n      \u003cdiv class=\"fsct8-eyebrow\"\u003eCompact and portable\u003c\/div\u003e\n      \u003ch2 class=\"fsct8-h2\"\u003e8-inch aperture. \u003cspan class=\"fsct8-mute\"\u003eMid-range mount. Dark-sky remote site. All viable.\u003c\/span\u003e\n\u003c\/h2\u003e\n      \u003cp class=\"fsct8-body\"\u003eAt under 9 kg and just 267 mm OTA length, the FSCT8 is mountable on equatorial platforms that a conventional 8-inch SCT with reducer stack would overload. It travels as carry-on, sets up in minutes, and puts professional-grade optical performance within reach of any dark-sky site — no permanent observatory required.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cimg class=\"fsct8-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-fsct8-hero.jpg?v=1779515988\" alt=\"Planewave FSCT8 8-inch fast Schmidt-Cassegrain astrograph, carbon-fibre optical tube assembly\" loading=\"lazy\"\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- CINEMATIC: sample image 1 --\u003e\n\u003csection class=\"fsct8-cinema fsct8-on-dark\"\u003e\n  \u003cdiv class=\"fsct8-cinema-cap\"\u003e\n    \u003cspan class=\"fsct8-eyebrow\"\u003eSample imaging\u003c\/span\u003e\n    \u003ch2 class=\"fsct8-h2 fsct8-grad\"\u003eNGC 6992. The Eastern Veil Nebula.\u003c\/h2\u003e\n    \u003cp class=\"fsct8-body\" style=\"color:#A1A1A6;\"\u003eSupernova remnant in Cygnus. Delicate filamentary emission structure that demands long exposures from slower systems resolves here in a fraction of the integration time — f\/2.8 working exactly as intended.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cimg class=\"fsct8-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-fsct8-sample-ngc6992-veil-nebula.webp?v=1779515988\" alt=\"NGC 6992 Eastern Veil Nebula, narrowband astrophotography captured with PlaneWave optics\" loading=\"lazy\"\u003e\n\u003c\/section\u003e\n\n\u003c!-- CINEMATIC: sample image 2 --\u003e\n\u003csection class=\"fsct8-cinema fsct8-on-dark\" style=\"padding-top:60px;\"\u003e\n  \u003cdiv class=\"fsct8-cinema-cap\"\u003e\n    \u003cspan class=\"fsct8-eyebrow\"\u003ePlanetary nebula\u003c\/span\u003e\n    \u003ch2 class=\"fsct8-h2 fsct8-grad\"\u003eM97. The Owl Nebula.\u003c\/h2\u003e\n    \u003cp class=\"fsct8-body\" style=\"color:#A1A1A6;\"\u003ePlanetary nebula in Ursa Major, approximately 2,600 light years distant. Extended shell structure and the characteristic owl-eye cavities resolved in a single night — a target that a slow system would need multiple sessions to match.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cimg class=\"fsct8-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-fsct8-sample-m97-owl-nebula.webp?v=1779515988\" alt=\"M97 Owl Nebula imaged with PlaneWave telescope optics, showing extended nebula shell\" loading=\"lazy\"\u003e\n\u003c\/section\u003e\n\n\u003c!-- HIGHLIGHTS --\u003e\n\u003csection class=\"fsct8-section\"\u003e\n  \u003cdiv style=\"text-align:center;max-width:820px;margin:0 auto 56px;\"\u003e\n    \u003cdiv class=\"fsct8-eyebrow\"\u003eWhy the FSCT8\u003c\/div\u003e\n    \u003ch2 class=\"fsct8-h2\"\u003eMore signal per hour. \u003cspan class=\"fsct8-mute\"\u003eEvery clear night finally worth the effort.\u003c\/span\u003e\n\u003c\/h2\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fsct8-highlights\"\u003e\n    \u003cdiv class=\"fsct8-highlight-item\"\u003e\n      \u003csvg class=\"fsct8-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"fsct8-body\"\u003eNative f\/2.8 focal ratio — the first fast SCT in an 8-inch system, designed for wide-field deep-sky imaging from the optical axis out\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-highlight-item\"\u003e\n      \u003csvg class=\"fsct8-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"fsct8-body\"\u003e42 mm fully illuminated image circle with optical performance under 6.2 μm RMS across the full field — sharp stars edge to edge\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-highlight-item\"\u003e\n      \u003csvg class=\"fsct8-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"fsct8-body\"\u003eFused silica (optical-grade quartz) primary (210 mm) and secondary (114 mm) mirrors with enhanced aluminium coatings for temperature stability\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-highlight-item\"\u003e\n      \u003csvg class=\"fsct8-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"fsct8-body\"\u003eCarbon-fibre upper cage construction — 267 mm OTA, under 9 kg total weight for use on mid-range to high-end imaging mounts\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-highlight-item\"\u003e\n      \u003csvg class=\"fsct8-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"fsct8-body\"\u003e88 mm broadband AR-coated corrector lens delivers a flat focal plane and 2.75 μm per arcsecond image scale suited to modern CMOS sensors\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-highlight-item\"\u003e\n      \u003csvg class=\"fsct8-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"fsct8-body\"\u003e100 mm back focus from mounting surface — accommodates cameras, filter wheels, and electronic focusers in a standard imaging train\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-highlight-item\"\u003e\n      \u003csvg class=\"fsct8-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"fsct8-body\"\u003e4°+ field of view with a 42 mm sensor — ideal for large emission nebulae, galaxy groups, and all-sky survey programmes\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fsct8-highlight-item\"\u003e\n      \u003csvg class=\"fsct8-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"fsct8-body\"\u003eAn Observable Space instrument — the merger of PlaneWave precision optics engineering and OurSky imaging systems expertise, purpose-built for the astrophotographer\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- SPECS TABLE --\u003e\n\u003csection class=\"fsct8-section fsct8-paper\" id=\"fsct8-specs\"\u003e\n  \u003cdiv class=\"fsct8-specs-heading\"\u003e\n    \u003cdiv class=\"fsct8-eyebrow\"\u003eTechnical specifications\u003c\/div\u003e\n    \u003ch2 class=\"fsct8-h2\"\u003eEvery number that matters.\u003c\/h2\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fsct8-specs\"\u003e\n    \u003cdiv class=\"fsct8-specs-cat\"\u003eOptical system\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eOptical design\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003eFast Schmidt-Cassegrain astrograph (FSCT)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eAperture\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e203.2 mm (8″)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eFocal length\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e568 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eFocal ratio\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003ef\/2.8\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eImage circle\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e42 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eField of view (42 mm sensor)\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e4°+\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eOptical performance\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e\u0026lt;6.2 μm RMS across field\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eImage scale\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e2.75 μm per arcsecond\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eCentral obstruction\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e\u0026lt;60% of aperture\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-cat\"\u003ePrimary mirror\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eDiameter\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e210 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003eFused silica (optical-grade quartz)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eCoating\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003eEnhanced aluminium\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-cat\"\u003eSecondary mirror\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eDiameter\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e114 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003eFused silica (optical-grade quartz)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eCoating\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003eEnhanced aluminium\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-cat\"\u003eCorrector lens\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eDiameter\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e88 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eCoating\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003eBroadband AR\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-cat\"\u003eBack focus and tube\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eBack focus (mounting surface)\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e100 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eOTA length\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e267 mm (10.5″)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eUpper cage material\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003eCarbon fibre\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-cat\"\u003ePhysical\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eWeight\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e\u0026lt;9 kg (\u0026lt;20 lb)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-cat\"\u003eManufacturer\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eBrand\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003eObservable Space (PlaneWave \u0026amp; OurSky)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-specs-row\"\u003e\n\u003cdiv class=\"fsct8-specs-label\"\u003eSKU\u003c\/div\u003e\n\u003cdiv class=\"fsct8-specs-value\"\u003e08011001A\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- CLOSING + PERKS --\u003e\n\u003csection class=\"fsct8-section fsct8-paper fsct8-closing\"\u003e\n  \u003ch2 class=\"fsct8-h2\"\u003eThe fast SCT, reimagined. \u003cspan class=\"fsct8-mute\"\u003eBacked by Australia’s telescope authority.\u003c\/span\u003e\n\u003c\/h2\u003e\n  \u003cdiv class=\"fsct8-perks\"\u003e\n    \u003cdiv class=\"fsct8-perk\"\u003e\n\u003cdiv class=\"fsct8-perk-t\"\u003eAustralian warranty\u003c\/div\u003e\n\u003cdiv class=\"fsct8-perk-s\"\u003eFull local cover\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-perk\"\u003e\n\u003cdiv class=\"fsct8-perk-t\"\u003eShips from Sydney\u003c\/div\u003e\n\u003cdiv class=\"fsct8-perk-s\"\u003eFrom local stock\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-perk\"\u003e\n\u003cdiv class=\"fsct8-perk-t\"\u003eExpert advice\u003c\/div\u003e\n\u003cdiv class=\"fsct8-perk-s\"\u003eFrom working astronomers\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"fsct8-perk\"\u003e\n\u003cdiv class=\"fsct8-perk-t\"\u003e40+ years\u003c\/div\u003e\n\u003cdiv class=\"fsct8-perk-s\"\u003eIn Australian astronomy\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c\/div\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":44978384437317,"sku":"08011001A","price":9869.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-fsct8-main.jpg?v=1779515157"},{"product_id":"planewave-deltarho-280","title":"PlaneWave DeltaRho 280 Argus Astrograph","description":"\u003cdiv class=\"bintel-dr280-argus-page\"\u003e\n\n\u003cstyle\u003e\n.bintel-dr280-argus-page {\n  --black: #000000;\n  --ink: #1D1D1F;\n  --paper: #F5F5F7;\n  --white: #FFFFFF;\n  --mute: #86868B;\n  --line: #D2D2D7;\n  --link: #0066CC;\n  --accent: #1B3A6B;\n  --radius: 22px;\n  --radius-lg: 28px;\n  font-family: -apple-system, BlinkMacSystemFont, \"SF Pro Display\", \"SF Pro\", \"Helvetica Neue\", Helvetica, Arial, sans-serif;\n  font-weight: 400;\n  color: var(--ink);\n  background: var(--white);\n  line-height: 1.47;\n  letter-spacing: -0.003em;\n  -webkit-font-smoothing: antialiased;\n  -moz-osx-font-smoothing: grayscale;\n  overflow-x: hidden;\n}\n.bintel-dr280-argus-page img { max-width: 100%; height: auto; }\n.bintel-dr280-argus-page .dr280-section { padding: 120px 22px; }\n@media (max-width: 640px) { .bintel-dr280-argus-page .dr280-section { padding: 80px 22px; } }\n.bintel-dr280-argus-page .dr280-on-dark { background: var(--black); color: var(--white); }\n.bintel-dr280-argus-page .dr280-paper { background: var(--paper); }\n.bintel-dr280-argus-page .dr280-hero-h2 { font-size: clamp(60px, 9vw, 112px); font-weight: 600; line-height: 1.04; letter-spacing: -0.025em; color: var(--ink); }\n.bintel-dr280-argus-page .dr280-h2 { font-size: clamp(40px, 5.5vw, 72px); font-weight: 600; line-height: 1.07; letter-spacing: -0.022em; color: var(--ink); }\n.bintel-dr280-argus-page .dr280-lead { font-size: clamp(19px, 1.6vw, 24px); letter-spacing: -0.009em; color: var(--ink); }\n.bintel-dr280-argus-page .dr280-body { font-size: 17px; letter-spacing: -0.005em; line-height: 1.5; color: var(--ink); }\n.bintel-dr280-argus-page .dr280-eyebrow { font-size: 17px; font-weight: 600; letter-spacing: -0.005em; color: var(--mute); }\n.bintel-dr280-argus-page .dr280-mute { color: var(--mute); }\n.bintel-dr280-argus-page .dr280-on-dark .dr280-mute { color: #6E6E73; }\n.bintel-dr280-argus-page .dr280-grad {\n  background: linear-gradient(90deg, var(--white) 0%, var(--white) 35%, var(--accent) 100%);\n  -webkit-background-clip: text; background-clip: text;\n  -webkit-text-fill-color: transparent; color: transparent; display: inline-block;\n}\n@media (max-width: 380px) { .bintel-dr280-argus-page .dr280-hero-h2 { font-size: 42px; } }\n.bintel-dr280-argus-page .dr280-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1100px; margin: 0 auto; }\n.bintel-dr280-argus-page .dr280-stat-num { font-size: clamp(32px, 3.6vw, 52px); font-weight: 600; line-height: 1.05; letter-spacing: -0.02em; color: var(--ink); white-space: nowrap; }\n.bintel-dr280-argus-page .dr280-stat-lbl { font-size: 15px; color: 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.dr280-bento-card { background: #1C1C1E; border-radius: 28px; padding: 44px; min-height: 320px; display: flex; flex-direction: column; justify-content: flex-start; color: var(--white); transition: transform 0.3s ease; }\n.bintel-dr280-argus-page .dr280-bento-card:hover { transform: translateY(-2px); }\n.bintel-dr280-argus-page .dr280-bento-card .dr280-eyebrow { color: #98989D; }\n.bintel-dr280-argus-page .dr280-bento-h { font-size: 28px; font-weight: 600; color: var(--white); margin: 8px 0 12px; }\n.bintel-dr280-argus-page .dr280-big-number { font-size: clamp(80px, 10vw, 140px); font-weight: 600; line-height: 1; letter-spacing: -0.03em; color: var(--white); }\n.bintel-dr280-argus-page .dr280-span-2 { grid-column: span 2; }\n.bintel-dr280-argus-page .dr280-span-3 { grid-column: span 3; }\n.bintel-dr280-argus-page .dr280-span-4 { grid-column: span 4; min-height: 380px; }\n@media (max-width: 1024px) { .bintel-dr280-argus-page .dr280-bento { grid-template-columns: repeat(2, 1fr); } .bintel-dr280-argus-page .dr280-span-2, .bintel-dr280-argus-page .dr280-span-3, .bintel-dr280-argus-page .dr280-span-4 { grid-column: span 1; } }\n@media (max-width: 640px) {\n  .bintel-dr280-argus-page .dr280-bento { display: flex; grid-template-columns: none; gap: 14px; overflow-x: auto; overflow-y: hidden; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; -ms-overflow-style: none; margin: 0 -22px; padding: 4px 22px; scroll-padding-left: 22px; }\n  .bintel-dr280-argus-page .dr280-bento::-webkit-scrollbar { display: none; }\n  .bintel-dr280-argus-page .dr280-bento-card, .bintel-dr280-argus-page .dr280-span-2, .bintel-dr280-argus-page .dr280-span-3, .bintel-dr280-argus-page .dr280-span-4 { grid-column: auto; flex: 0 0 85%; scroll-snap-align: start; min-height: 300px; padding: 28px; }\n}\n.bintel-dr280-argus-page .dr280-split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; max-width: 1100px; margin: 0 auto; }\n.bintel-dr280-argus-page .dr280-split-img { width: 100%; border-radius: 28px; max-height: 700px; object-fit: cover; }\n@media (max-width: 900px) { .bintel-dr280-argus-page .dr280-split { grid-template-columns: 1fr; text-align: center; } .bintel-dr280-argus-page .dr280-split-text { order: 1; } .bintel-dr280-argus-page .dr280-split-img { order: 2; } }\n.bintel-dr280-argus-page .dr280-cinema { padding: 120px 0 0; text-align: center; }\n.bintel-dr280-argus-page .dr280-cinema-cap { max-width: 820px; margin: 0 auto 56px; padding: 0 22px; }\n.bintel-dr280-argus-page .dr280-cinema-img { width: 100%; display: block; max-height: 700px; object-fit: cover; }\n@media (max-width: 640px) { .bintel-dr280-argus-page .dr280-cinema { padding-top: 80px; } .bintel-dr280-argus-page .dr280-cinema-img { max-height: 70vh; object-fit: cover; } }\n.bintel-dr280-argus-page .dr280-specs { max-width: 980px; margin: 0 auto; font-size: 17px; color: var(--ink); }\n.bintel-dr280-argus-page .dr280-specs-row { display: grid; grid-template-columns: 38% 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); align-items: start; }\n.bintel-dr280-argus-page .dr280-specs-label { color: var(--mute); font-weight: 400; font-size: 17px; line-height: 1.5; }\n.bintel-dr280-argus-page .dr280-specs-value { color: var(--ink); font-weight: 400; font-size: 17px; line-height: 1.5; overflow-wrap: anywhere; }\n.bintel-dr280-argus-page .dr280-specs-cat { padding: 36px 0 14px; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink); }\n@media (max-width: 640px) { .bintel-dr280-argus-page .dr280-specs-row { font-size: 15px; padding: 14px 0; } }\n@media (max-width: 380px) { .bintel-dr280-argus-page .dr280-specs-row { font-size: 13.5px; padding: 10px 0; } }\n.bintel-dr280-argus-page .dr280-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 48px; max-width: 1000px; margin: 0 auto; }\n.bintel-dr280-argus-page .dr280-highlight-item { display: flex; gap: 14px; align-items: flex-start; }\n.bintel-dr280-argus-page .dr280-tick { width: 24px; height: 24px; flex-shrink: 0; color: var(--ink); margin-top: 2px; }\n@media (max-width: 700px) { .bintel-dr280-argus-page .dr280-highlights { grid-template-columns: 1fr; } }\n.bintel-dr280-argus-page .dr280-link { color: var(--link); font-size: 17px; display: inline-flex; align-items: center; gap: 4px; padding: 10px 4px; min-height: 44px; text-decoration: none; }\n.bintel-dr280-argus-page .dr280-link svg { width: 18px; height: 18px; }\n.bintel-dr280-argus-page .dr280-closing { text-align: center; }\n.bintel-dr280-argus-page .dr280-closing h2 { max-width: 820px; margin: 0 auto 56px; }\n.bintel-dr280-argus-page .dr280-perks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; }\n.bintel-dr280-argus-page .dr280-perk-t { font-size: 17px; font-weight: 600; color: var(--ink); }\n.bintel-dr280-argus-page .dr280-perk-s { font-size: 14px; color: var(--mute); margin-top: 4px; }\n@media (max-width: 1024px) { .bintel-dr280-argus-page .dr280-perks { grid-template-columns: repeat(2, 1fr); } }\n.bintel-dr280-argus-page .dr280-specs-heading { text-align: center; margin-bottom: 56px; }\n\u003c\/style\u003e\n\n\u003csection class=\"dr280-section dr280-on-dark\" style=\"text-align:center;\"\u003e\n  \u003cdiv style=\"max-width:900px;margin:0 auto;\"\u003e\n    \u003cdiv class=\"dr280-eyebrow\" style=\"color:#98989D;margin-bottom:24px;\"\u003ePlaneWave DeltaRho 280 Argus\u003c\/div\u003e\n    \u003ch2 class=\"dr280-hero-h2\" style=\"color:var(--white);margin-bottom:32px;\"\u003e\n      \u003cspan class=\"dr280-grad\"\u003ef\/2.75.\u003c\/span\u003e\u003cbr\u003eWhat used to take a week now takes a night.\n    \u003c\/h2\u003e\n    \u003cp class=\"dr280-lead\" style=\"color:#A1A1A6;max-width:680px;margin:0 auto 40px;\"\u003eThe DeltaRho 280 Argus is PlaneWave’s observatory-class wide-field astrograph for serious imagers and sky-survey programmes. Fused silica quartz mirrors, a carbon fibre OTA, and a 55 mm image circle at f\/2.75 — 280 mm of aperture that turns nights of integration into a few productive hours.\u003c\/p\u003e\n    \u003cdiv style=\"display:flex;gap:20px;justify-content:center;flex-wrap:wrap;\"\u003e\n      \u003ca href=\"#dr280-features\" class=\"dr280-link\" style=\"color:#98CBFF;\"\u003eExplore features\n        \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003c\/a\u003e\n      \u003ca href=\"#dr280-specs\" class=\"dr280-link\" style=\"color:#98CBFF;\"\u003eView specifications\n        \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-section dr280-paper\"\u003e\n  \u003cdiv class=\"dr280-stats\"\u003e\n    \u003cdiv class=\"dr280-stat\"\u003e\n\u003cdiv class=\"dr280-stat-num\"\u003e280\u003c\/div\u003e\n\u003cdiv class=\"dr280-stat-lbl\"\u003emm aperture\u003c\/div\u003e\n\u003cdiv class=\"dr280-stat-cap\"\u003e11 inches of light-gathering\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-stat\"\u003e\n\u003cdiv class=\"dr280-stat-num\"\u003ef\/2.75\u003c\/div\u003e\n\u003cdiv class=\"dr280-stat-lbl\"\u003efocal ratio\u003c\/div\u003e\n\u003cdiv class=\"dr280-stat-cap\"\u003e13x faster than f\/10\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-stat\"\u003e\n\u003cdiv class=\"dr280-stat-num\"\u003e55\u003c\/div\u003e\n\u003cdiv class=\"dr280-stat-lbl\"\u003emm image circle\u003c\/div\u003e\n\u003cdiv class=\"dr280-stat-cap\"\u003eFull-frame and beyond\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-stat\"\u003e\n\u003cdiv class=\"dr280-stat-num\"\u003e4.0\u003c\/div\u003e\n\u003cdiv class=\"dr280-stat-lbl\"\u003eμm RMS on-axis\u003c\/div\u003e\n\u003cdiv class=\"dr280-stat-cap\"\u003eObservatory-class sharpness\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-section dr280-pullquote\"\u003e\n  \u003cp\u003ef\/2.75 is not just fast. \u003cspan class=\"dr280-mute\"\u003eIt is the difference between finishing a target tonight and coming back next month.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-section dr280-on-dark\" id=\"dr280-features\"\u003e\n  \u003cdiv class=\"dr280-bento\"\u003e\n    \u003cdiv class=\"dr280-bento-card dr280-span-3\"\u003e\n      \u003cdiv class=\"dr280-eyebrow\"\u003eOptical speed\u003c\/div\u003e\n      \u003ch3 class=\"dr280-bento-h\"\u003e13× faster than f\/10. Every photon counts more.\u003c\/h3\u003e\n      \u003cp class=\"dr280-body\"\u003eAt f\/2.75, the DeltaRho 280 gathers light 13 times faster than an f\/10 instrument of identical aperture. That is not an incremental advantage — it is the difference between a productive one-hour session and a week of cloud-interrupted integration. Research programmes and sky surveys that would otherwise take months become achievable in a single season.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-bento-card dr280-span-3\"\u003e\n      \u003cdiv class=\"dr280-big-number\"\u003e55\u003c\/div\u003e\n      \u003cp class=\"dr280-body\"\u003emm image circle — large enough to cover full-frame sensors and beyond, with sharp stars from centre to corner at 4.5 μm RMS or better at 27.5 mm off-axis.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-bento-card dr280-span-2\"\u003e\n      \u003cdiv class=\"dr280-eyebrow\"\u003eMirrors\u003c\/div\u003e\n      \u003ch3 class=\"dr280-bento-h\"\u003eFocus stays locked. All night.\u003c\/h3\u003e\n      \u003cp class=\"dr280-body\"\u003ePrimary and secondary mirrors are optical-grade fused silica quartz — near-zero thermal expansion, the same material used in premier research observatories. As temperature drops through the night, conventional glass mirrors shift focus. The DR280’s quartz mirrors do not.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-bento-card dr280-span-2\"\u003e\n      \u003cdiv class=\"dr280-eyebrow\"\u003eStructure\u003c\/div\u003e\n      \u003ch3 class=\"dr280-bento-h\"\u003eStiff where it matters. Light where it counts.\u003c\/h3\u003e\n      \u003cp class=\"dr280-body\"\u003eCarbon fibre delivers exceptional torsional rigidity with minimal mass. At 14.5 kg for a 451 mm OTA, the DR280 is a 280 mm instrument that mounts on observatory-class and high-end portable mounts alike — without needing a counterweight upgrade.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-bento-card dr280-span-2\"\u003e\n      \u003cdiv class=\"dr280-eyebrow\"\u003eFocal plane adjustment\u003c\/div\u003e\n      \u003ch3 class=\"dr280-bento-h\"\u003eSensor alignment without shimming or guesswork.\u003c\/h3\u003e\n      \u003cp class=\"dr280-body\"\u003eThe integrated tip-tilt focal plane adjuster lets you dial in perfect sensor tilt with precision — no shims, no trial-and-error. It is consistent, repeatable, and done in minutes at the start of any session.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-bento-card dr280-span-3\"\u003e\n      \u003cdiv class=\"dr280-eyebrow\"\u003eField of view\u003c\/div\u003e\n      \u003ch3 class=\"dr280-bento-h\"\u003eThe Heart Nebula. In one frame.\u003c\/h3\u003e\n      \u003cp class=\"dr280-body\"\u003eThe 770.6 mm focal length paired with the 55 mm image circle delivers over 4 degrees of field of view. Large nebula complexes, galaxy groups, and wide-field targets that require mosaics on narrow-field systems fit comfortably into a single frame — or anchor a multi-panel survey.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-bento-card dr280-span-3\"\u003e\n      \u003cdiv class=\"dr280-eyebrow\"\u003eDew control\u003c\/div\u003e\n      \u003ch3 class=\"dr280-bento-h\"\u003eDew control built in. Session-ending fog, ruled out.\u003c\/h3\u003e\n      \u003cp class=\"dr280-body\"\u003eIntegrated dew control heater technology keeps the optical path clear on humid Australian nights. One less cable to run, one less failure point — the DR280 keeps imaging when lesser rigs fog out and call it a night.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-section\"\u003e\n  \u003cdiv class=\"dr280-split\"\u003e\n    \u003cdiv class=\"dr280-split-text\"\u003e\n      \u003cdiv class=\"dr280-eyebrow\"\u003ePrecision collimation\u003c\/div\u003e\n      \u003ch2 class=\"dr280-h2\"\u003eCollimation solved. \u003cspan class=\"dr280-mute\"\u003eFrom first session to thousandth.\u003c\/span\u003e\n\u003c\/h2\u003e\n      \u003cp class=\"dr280-body\"\u003eThe DeltaRho 280 ships with PlaneWave’s collimation software that walks you through mirror alignment step by step — no iterative star-testing, no guesswork. Set it once: the rigid carbon fibre structure holds alignment through the night. The low-profile focuser delivers 0.5 inches of travel from a 163 mm back focus distance, giving your imaging train room to breathe.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cimg class=\"dr280-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-deltarho-280-argus-hero.webp?v=1779515988\" alt=\"PlaneWave DeltaRho 280 Argus astrograph on mount, carbon fibre optical tube assembly\" loading=\"lazy\"\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-cinema dr280-on-dark\"\u003e\n  \u003cdiv class=\"dr280-cinema-cap\"\u003e\n    \u003cspan class=\"dr280-eyebrow\"\u003eSample imaging\u003c\/span\u003e\n    \u003ch2 class=\"dr280-h2 dr280-grad\"\u003eM51. The Whirlpool Galaxy.\u003c\/h2\u003e\n    \u003cp class=\"dr280-body\" style=\"color:#A1A1A6;\"\u003eGalaxy arms, tidal bridges, and foreground stars resolved in a single short session. At f\/2.75, integration time that would fill a week on a slower system compresses to a few productive hours.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cimg class=\"dr280-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-deltarho-280-sample-m51-whirlpool.webp?v=1779515988\" alt=\"M51 Whirlpool Galaxy imaged with PlaneWave telescope, showing spiral arms and NGC 5195 companion\" loading=\"lazy\"\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-cinema dr280-on-dark\" style=\"padding-top:60px;\"\u003e\n  \u003cdiv class=\"dr280-cinema-cap\"\u003e\n    \u003cspan class=\"dr280-eyebrow\"\u003eEmission nebula\u003c\/span\u003e\n    \u003ch2 class=\"dr280-h2 dr280-grad\"\u003eIC 1805. The Heart Nebula.\u003c\/h2\u003e\n    \u003cp class=\"dr280-body\" style=\"color:#A1A1A6;\"\u003eH-alpha, RGB narrowband composite. The 4-degree–plus field captures the Heart Nebula’s full complex and surrounding star-forming regions in a single pointing — a target that demands a mosaic from slower, narrower systems.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cimg class=\"dr280-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-deltarho-280-sample-ic1805-heart-nebula.webp?v=1779515988\" alt=\"IC 1805 Heart Nebula captured with PlaneWave astrograph, wide-field narrowband imaging\" loading=\"lazy\"\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-section\"\u003e\n  \u003cdiv style=\"text-align:center;max-width:820px;margin:0 auto 56px;\"\u003e\n    \u003cdiv class=\"dr280-eyebrow\"\u003eWhy the DeltaRho 280\u003c\/div\u003e\n    \u003ch2 class=\"dr280-h2\"\u003eBuilt for imagers who treat every clear night as a resource. \u003cspan class=\"dr280-mute\"\u003eNothing wasted.\u003c\/span\u003e\n\u003c\/h2\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"dr280-highlights\"\u003e\n    \u003cdiv class=\"dr280-highlight-item\"\u003e\n      \u003csvg class=\"dr280-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"dr280-body\"\u003e280 mm (11″) aperture with fused silica (quartz) primary and secondary mirrors for temperature-stable performance\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-highlight-item\"\u003e\n      \u003csvg class=\"dr280-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"dr280-body\"\u003ef\/2.75 focal ratio — 13 times faster than f\/10, reducing required integration time dramatically\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-highlight-item\"\u003e\n      \u003csvg class=\"dr280-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"dr280-body\"\u003e55 mm image circle at 4.0 μm RMS on-axis and 4.5 μm RMS at the full 27.5 mm off-axis radius\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-highlight-item\"\u003e\n      \u003csvg class=\"dr280-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"dr280-body\"\u003eIntegrated tip-tilt focal plane adjuster for precise sensor alignment without physical shimming\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-highlight-item\"\u003e\n      \u003csvg class=\"dr280-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"dr280-body\"\u003eCarbon fibre optical tube — 451 mm OTA, 14.5 kg total weight for use on observatory-class mounts\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-highlight-item\"\u003e\n      \u003csvg class=\"dr280-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"dr280-body\"\u003eBuilt-in dew control heater and broadband AR coatings (\u0026lt;1% reflection, 400–800 nm) for consistent all-weather performance\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-highlight-item\"\u003e\n      \u003csvg class=\"dr280-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"dr280-body\"\u003e4°+ field of view capability with a 55 mm sensor — ideal for large nebula complexes and sky surveys\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dr280-highlight-item\"\u003e\n      \u003csvg class=\"dr280-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n      \u003cp class=\"dr280-body\"\u003eCompatible with PlaneWave L350 Direct Drive Mount — designed as an integrated professional imaging system\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-section dr280-paper\" id=\"dr280-specs\"\u003e\n  \u003cdiv class=\"dr280-specs-heading\"\u003e\n    \u003cdiv class=\"dr280-eyebrow\"\u003eTechnical specifications\u003c\/div\u003e\n    \u003ch2 class=\"dr280-h2\"\u003eEvery number that matters.\u003c\/h2\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"dr280-specs\"\u003e\n    \u003cdiv class=\"dr280-specs-cat\"\u003eOptical system\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eOptical design\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eCorrected Cassegrain astrograph (DeltaRho)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eAperture\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e280 mm (11 in)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eFocal length\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e770.6 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eFocal ratio\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003ef\/2.75\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eImage circle\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e55 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eCentral obstruction\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e63%\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eOptical performance (on-axis)\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e4.0 μm RMS\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eOptical performance (21 mm off-axis)\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e4.1 μm RMS\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eOptical performance (27.5 mm off-axis)\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e4.5 μm RMS\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-cat\"\u003ePrimary mirror\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eOptical diameter\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e280 mm (11 in)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eShape\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eAspheric\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eFused silica (quartz)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eCoating\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eEnhanced aluminium (360–820 nm optimised)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-cat\"\u003eSecondary mirror\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eDiameter\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e170 mm (6.7 in)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eShape\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eSpherical\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eFused silica (quartz)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eCoating\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eEnhanced aluminium (360–820 nm optimised)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-cat\"\u003eLens group (upper cage)\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eDiameter\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e120 mm (4.72 in)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eCarbon fibre tube\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eCoating\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eBroadband AR (\u0026lt;1% reflection, 400–800 nm)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-cat\"\u003eFocuser and back focus\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eBack focus (mounting surface)\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e163 mm (6.4 in)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eBack focus (racked-in focuser)\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e108 mm (4.25 in)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eFocuser travel\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e0.5 in (low-profile)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-cat\"\u003ePhysical\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eOTA length\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e451 mm (17.75 in)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eTotal OTA length (including focuser)\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e467 mm\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eWeight\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003e14.5 kg (32 lb)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eTube construction\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eCarbon fibre\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-cat\"\u003eAdditional features\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eDew control\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eIntegrated heater technology\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eFocal plane adjustment\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eBuilt-in tip-tilt adjuster\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eCollimation\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eUser-friendly software-assisted\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eRecommended mount\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003ePlaneWave L350 Direct Drive Mount\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-cat\"\u003eIn the box\u003c\/div\u003e\n    \u003cdiv class=\"dr280-specs-row\"\u003e\n\u003cdiv class=\"dr280-specs-label\"\u003eIncluded\u003c\/div\u003e\n\u003cdiv class=\"dr280-specs-value\"\u003eOTA cover, hex wrench set\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"dr280-section dr280-paper dr280-closing\"\u003e\n  \u003ch2 class=\"dr280-h2\"\u003eProfessional imaging. \u003cspan class=\"dr280-mute\"\u003eBacked by Australia’s telescope authority.\u003c\/span\u003e\n\u003c\/h2\u003e\n  \u003cdiv class=\"dr280-perks\"\u003e\n    \u003cdiv class=\"dr280-perk\"\u003e\n\u003cdiv class=\"dr280-perk-t\"\u003eAustralian warranty\u003c\/div\u003e\n\u003cdiv class=\"dr280-perk-s\"\u003eFull local cover\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-perk\"\u003e\n\u003cdiv class=\"dr280-perk-t\"\u003eShips from Sydney\u003c\/div\u003e\n\u003cdiv class=\"dr280-perk-s\"\u003eFrom local stock\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-perk\"\u003e\n\u003cdiv class=\"dr280-perk-t\"\u003eExpert advice\u003c\/div\u003e\n\u003cdiv class=\"dr280-perk-s\"\u003eFrom working astronomers\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"dr280-perk\"\u003e\n\u003cdiv class=\"dr280-perk-t\"\u003e40+ years\u003c\/div\u003e\n\u003cdiv class=\"dr280-perk-s\"\u003eIn Australian astronomy\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c\/div\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":44978384830533,"sku":"11001002","price":15049.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/planewave-deltarho-280-argus-main.webp?v=1779515154"},{"product_id":"saxon-200ds-astrophotography-newtonian-telescope","title":"Saxon 200DS Astrophotography Newtonian Telescope","description":"\u003cp\u003eYou expect nothing less than crystal-clear images in your scope, but what are you going to do with the mount and tripod you already have? Mount it with the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esaxon 200\/1000 DS Astrophotography Newtonian Telescope\u003c\/strong\u003e, that's what!\u003c\/p\u003e\n\u003cp\u003eCombined with the aperture of 200mm and focal length of 1000mm, this scope is great for prime-focus photography. Higher quality images can be achieved with the optional coma corrector.\u003c\/p\u003e\n\u003cp\u003eThis model comes in an OTA form for you to use your own mount and telescope; and customise it with your own accessories to start a great viewing sesssion immediately.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003esaxon 200DS Astrophotography Newtonian Telescope \u003c\/strong\u003efeatures the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e200mm aperture\u003c\/li\u003e\n\u003cli\u003e1000mm focal length (F\/5.0)\u003c\/li\u003e\n\u003cli\u003e2\" Dual Speed 10:1 focuser\u003c\/li\u003e\n\u003cli\u003e9x50 finderscope\u003c\/li\u003e\n\u003cli\u003e2\" LET 28mm eyepiece.\u003c\/li\u003e\n\u003cli\u003e2\" to 1.25\" adapter.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Saxon","offers":[{"title":"Default Title","offer_id":44996868898885,"sku":"220020","price":849.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Untitleddesign_23_9a343c42-53ca-4a2c-9ce5-2904284034bb.jpg?v=1778550823"},{"product_id":"zwo-ff70-apo-flat-field-70mm-apochromatic-refractor","title":"ZWO FF70 APO Flat-Field 70mm Apochromatic Refractor","description":"\u003cdiv class=\"zw-page\"\u003e \u003cstyle\u003e .zw-page { --black: #000000; 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} } .zw-page .zw-link { color: var(--link); font-size: 17px; display: inline-flex; align-items: center; gap: 4px; padding: 10px 4px; min-height: 44px; text-decoration: none; } .zw-page .zw-link svg { width: 18px; height: 18px; } .zw-page .zw-on-dark .zw-link { color: #2997FF; } .zw-page .zw-closing { text-align: center; } .zw-page .zw-closing h2 { max-width: 820px; margin: 0 auto 56px; } .zw-page .zw-perks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; } .zw-page .zw-perk-t { font-size: 17px; font-weight: 600; color: var(--ink); } .zw-page .zw-perk-s { font-size: 14px; color: var(--mute); margin-top: 4px; } @media (max-width: 1024px) { .zw-page .zw-perks { grid-template-columns: repeat(2, 1fr); } } \u003c\/style\u003e \u003csection class=\"zw-section zw-on-dark zw-hero\"\u003e \u003cdiv class=\"zw-hero-inner\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eZWO Flat-Field APO Series\u003c\/div\u003e \u003ch2 class=\"zw-hero-h2\"\u003eFF70 APO. \u003cspan class=\"zw-mute\"\u003eFlat field, built in.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-lead\"\u003eA 70 mm f\/7.0 four-element apochromatic refractor with a native flat field and a 44 mm full-frame image circle. At 2.5 kg it is the grab-and-go scope of the FF series, designed for both astrophotography and visual observing.\u003c\/p\u003e \u003cdiv class=\"zw-hero-ctas\"\u003e \u003ca href=\"#zw-features\" class=\"zw-link\"\u003eExplore the design \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/a\u003e \u003ca href=\"#zw-specs\" class=\"zw-link\"\u003eView specifications \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/a\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper\"\u003e \u003cdiv class=\"zw-stats\"\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e70 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eaperture\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003efour-element air-spaced APO\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e490 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003efocal length\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003ef\/7.0\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e44 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eimage circle\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003efull-frame coverage\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e2.5 kg\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eoptical tube\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003e3.0 kg with rings and dovetail\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-cinema zw-on-dark\"\u003e \u003cdiv class=\"zw-cinema-cap\"\u003e \u003cspan class=\"zw-eyebrow\"\u003eZWO FF Series\u003c\/span\u003e \u003ch2 class=\"zw-h2 zw-grad\"\u003eDesigned as an astrograph first.\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eEvery FF series telescope is built around a native flat field, so the optics, focuser and rear interfaces all serve one goal: clean stars across the whole sensor.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-flat-field-banner.webp?v=1781069482\" alt=\"ZWO FF70 APO flat-field apochromatic refractor banner\" loading=\"lazy\"\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-pullquote\"\u003e \u003cp\u003eAttach your camera, reach focus, start imaging. \u003cspan class=\"zw-mute\"\u003eNo flattener. No spacing maths.\u003c\/span\u003e\u003c\/p\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-on-dark\" id=\"zw-features\"\u003e \u003cdiv class=\"zw-bento\"\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eOptics\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eFour elements, fully air-spaced.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe FF70 APO uses a four-element, fully air-spaced apochromatic design in which all four elements work together to form the image. One ED (extra-low dispersion) glass element reduces chromatic aberration for cleaner colour correction and sharper stars.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eNative flat field\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eFlat to the edge. No flattener.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe flat imaging field is generated by the optical design itself, so there is no field flattener to buy and no back focus calculations to get right. Once focus is achieved, you are ready to capture.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFull-frame support\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003e44 mm image circle.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA 44 mm corrected image circle fully covers full-frame sensors, with sharp star fields and consistent illumination from centre to corner. Smaller APS-C and dedicated astronomy sensors have generous headroom.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFocusing\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003e1:10 dual-speed control.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA rigid 2.4″ rack-and-pinion focuser offers precise control, and the 1:10 coarse and fine adjustment makes critical focus easy to hit. A built-in 360° rotator at the rear sets your framing without disturbing focus.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eBuild\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eRetractable dew shield.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe dew shield retracts to shorten the tube for packing and travel. Precision CNC machining, a high-quality painted finish and an internal anti-reflection coating keep stray light down and image contrast up.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eConnectivity\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eAdapters in the box.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA photography extension tube with a 2″ filter thread is included, along with rear adapters in M48×0.75 and M54×0.75 standards. The quick-release mounting rings detach in seconds for fast setup and teardown.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eQuadruplet optics\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eFour elements. \u003cspan class=\"zw-mute\"\u003eOne flat field.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eAll four air-spaced elements work together to form the image, with one ED glass element controlling chromatic aberration for clean colour correction and tight, well-defined stars.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-four-element-optical-design.webp?v=1781069482\" alt=\"ZWO FF70 APO four-element air-spaced apochromatic optical design\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-optical-path-diagram.webp?v=1781069482\" alt=\"ZWO FF70 APO optical path diagram showing ED glass element position\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eOptical layout\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eThe light path, \u003cspan class=\"zw-mute\"\u003eend to end.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe optical layout delivers a corrected, flat field at the sensor with no additional optics in the imaging train. What leaves the objective arrives at your camera, flat.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFull-frame ready\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e44 mm \u003cspan class=\"zw-mute\"\u003eimage circle.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eFull-frame sensors are covered corner to corner with sharp star fields and consistent illumination, and smaller sensors sit comfortably inside the sweet spot.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-44mm-image-circle.webp?v=1781069482\" alt=\"ZWO FF70 APO 44mm image circle with full-frame camera support\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-focus-adjustment.webp?v=1781069482\" alt=\"ZWO FF70 APO coarse and fine focus adjustment\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eCritical focus\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eCoarse and fine, \u003cspan class=\"zw-mute\"\u003e1:10.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe rigid 2.4″ rack-and-pinion focuser moves imaging trains smoothly, and the 1:10 fine knob gives you the resolution to land exact focus on a star.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFraming\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e360° \u003cspan class=\"zw-mute\"\u003eof rotation.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eA built-in rotator at the rear lets you set the camera angle for perfect framing without unthreading anything or disturbing focus.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-camera-rotator.webp?v=1781069482\" alt=\"ZWO FF70 APO built-in 360 degree camera rotator and 1:10 focuser\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-rings-dew-shield.webp?v=1781069483\" alt=\"ZWO FF70 APO quick-release mounting rings and retractable dew shield\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eField-ready build\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eQuick-release rings. \u003cspan class=\"zw-mute\"\u003eRetractable dew shield.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe mounting rings detach in seconds for fast setup and teardown, and the dew shield slides back to shorten the tube for transport. CNC machining and an internal anti-reflection coating keep contrast high.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eIn the box\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003ePhotography \u003cspan class=\"zw-mute\"\u003eextension tube.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eA photography extension tube with a 2″ filter thread is included, plus M48×0.75 and M54×0.75 rear adapters, connecting cameras, filters and accessories cleanly out of the box.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-extension-tube.webp?v=1781069482\" alt=\"ZWO FF70 APO photography extension tube with 2 inch filter thread\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-lightweight-compact.webp?v=1781069482\" alt=\"ZWO FF70 APO lightweight compact refractor carried in one hand\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eLightweight and compact\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e2.5 kg, \u003cspan class=\"zw-mute\"\u003eready when you are.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eAt 70 mm aperture and 490 mm focal length, the FF70 APO balances portability against real performance. The optical tube weighs just 2.5 kg, or 3.0 kg with the handle, mounting rings and dovetail plate fitted.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-cinema zw-on-dark\"\u003e \u003cdiv class=\"zw-cinema-cap\"\u003e \u003cspan class=\"zw-eyebrow\"\u003eFlexible connectivity\u003c\/span\u003e \u003ch2 class=\"zw-h2 zw-grad\"\u003eOne telescope. Three configurations.\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003ePair the FF70 APO with ZWO ASI astronomy cameras, attach a DSLR or mirrorless body, or drop in a diagonal and eyepiece for visual observing. Focus is reached within a back focus range of 32.5–82.5 mm, measured from the M54–M48 interface shoulder. Visual accessories are available separately.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-connectivity-configurations.webp?v=1781052129\" alt=\"ZWO FF70 APO configurations for astrophotography cameras, DSLR and mirrorless cameras, and visual observation\" loading=\"lazy\"\u003e \u003c\/section\u003e \u003csection class=\"zw-section\" id=\"zw-highlights\"\u003e \u003cdiv class=\"zw-specs-head\"\u003e \u003ch2 class=\"zw-h2\"\u003eEvery detail, \u003cspan class=\"zw-mute\"\u003econsidered.\u003c\/span\u003e\n\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlights\"\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eFour-element, fully air-spaced apochromatic design with one ED glass element.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eNative flat-field design, no separate field flattener or spacing adjustments required.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003e44 mm image circle with full-frame sensor support and edge-to-edge sharpness.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003e2.4″ rack-and-pinion focuser with 1:10 coarse and fine adjustment.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eBuilt-in 360° rotator for precise camera angle adjustment.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eRetractable dew shield with internal anti-reflection coating for higher contrast.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eQuick-release mounting rings for fast setup and teardown.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003ePhotography extension tube with 2″ filter thread plus M48×0.75 and M54×0.75 rear adapters included.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper\" id=\"zw-specs\"\u003e \u003cdiv class=\"zw-specs-head\"\u003e \u003ch2 class=\"zw-h2\"\u003eSpecifications.\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"zw-specs\"\u003e \u003cdiv class=\"zw-specs-cat\"\u003eOptics\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eEffective aperture\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e70 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocal length\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e490 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocal ratio\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003ef\/7.0\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObjective type\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eFour-element air-spaced APO (includes 1 ED element)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImage circle\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e44 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eIntegrated field flattener design\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eFocuser and rotation\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocuser\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e2.4″ rack-and-pinion, 1:10 coarse and fine adjustment\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eCamera rotator\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eBuilt-in, 360°\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eBack focus\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eBack focus range\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e32.5–82.5 mm, measured from the M54–M48 interface shoulder\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eMaximum rear connection length (focuser retracted)\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImaging mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e82.5 mm (from M48×0.75 male thread)\u003cbr\u003e100.5 mm (from M54×0.75 male thread)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObservation mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e117 mm (from 1.25″ eyepiece holder)\u003cbr\u003e127 mm (from 2″ eyepiece holder)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eDimensions and weight\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eOverall length\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e372.5 mm (1.25″ interface retracted)\u003cbr\u003e415 mm (photography extension tube retracted)\u003cbr\u003e430.9 mm (1.25″ interface extended)\u003cbr\u003e473.4 mm (photography extension tube extended)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eTelescope body weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e2.5 kg\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eStandard configuration weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e3.0 kg (including handle, mounting rings and dovetail plate)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eInterfaces\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eRear interfaces\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eM64×0.75 – M54×0.75\u003cbr\u003eM54×0.75 – M54×0.75\u003cbr\u003eM54×0.75 – M48×0.75 (built-in M48×0.75 filter thread)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eThree-stage imaging adapter interface\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eM48×0.75\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eIn the box\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFF70 APO optical tube\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eWith handle, mounting rings and dovetail plate\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003ePhotography extension tube\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eWith 2″ filter thread, M48×0.75 and M54×0.75 rear adapters\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eDocumentation\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eUser manual, inspection sheet, warranty card\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper zw-closing\"\u003e \u003ch2 class=\"zw-h2\"\u003eBuilt to last a lifetime.\u003c\/h2\u003e \u003cdiv class=\"zw-perks\"\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eAustralian warranty\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFull local cover\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eShips from Sydney\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFrom local stock\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eExpert advice\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFrom working astronomers\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003e40+ years\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eIn Australian astronomy\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003c\/div\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":45120695271493,"sku":"ZWO FF70-APO","price":999.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff70-apo-refractor-side.webp?v=1781051952"},{"product_id":"zwo-ff90-apo-flat-field-90mm-apochromatic-refractor","title":"ZWO FF90 APO Flat-Field 90mm Apochromatic Refractor","description":"\u003cdiv class=\"zw-page\"\u003e \u003cstyle\u003e .zw-page { --black: #000000; --ink: #1D1D1F; --paper: #F5F5F7; --white: #FFFFFF; --mute: #86868B; --line: #D2D2D7; --link: #0066CC; --accent: #C6302B; --radius: 22px; --radius-lg: 28px; font-family: -apple-system, BlinkMacSystemFont, \"SF Pro Display\", \"SF Pro\", \"Helvetica Neue\", Helvetica, Arial, sans-serif; font-weight: 400; color: var(--ink); background: var(--white); line-height: 1.47; letter-spacing: -0.003em; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; overflow-x: hidden; } .zw-page img { max-width: 100%; height: auto; } .zw-page .zw-section { padding: 120px 22px; } @media (max-width: 640px) { .zw-page .zw-section { padding: 80px 22px; } } .zw-page .zw-on-dark { background: var(--black); color: var(--white); } .zw-page .zw-paper { background: var(--paper); } .zw-page .zw-hero-h2 { font-size: clamp(60px, 9vw, 112px); font-weight: 600; line-height: 1.04; letter-spacing: -0.025em; color: var(--ink); } .zw-page .zw-h2 { font-size: clamp(40px, 5.5vw, 72px); font-weight: 600; line-height: 1.07; letter-spacing: -0.022em; color: var(--ink); } .zw-page .zw-lead { font-size: clamp(19px, 1.6vw, 24px); letter-spacing: -0.009em; color: var(--ink); } .zw-page .zw-body { font-size: 17px; letter-spacing: -0.005em; line-height: 1.5; color: var(--ink); } .zw-page .zw-eyebrow { font-size: 17px; font-weight: 600; letter-spacing: -0.005em; color: var(--mute); } .zw-page .zw-mute { color: var(--mute); } .zw-page .zw-on-dark .zw-mute { color: #6E6E73; } .zw-page .zw-on-dark .zw-h2, .zw-page .zw-on-dark .zw-hero-h2 { color: var(--white); } .zw-page .zw-on-dark .zw-body, .zw-page .zw-on-dark .zw-lead { color: #C7C7CC; } .zw-page .zw-bento-card .zw-body { color: #C7C7CC; } .zw-page .zw-grad { background: linear-gradient(90deg, var(--white) 0%, var(--white) 35%, var(--accent) 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; display: inline-block; } @media (max-width: 380px) { .zw-page .zw-hero-h2 { font-size: 42px; } } .zw-page .zw-hero { text-align: center; } .zw-page .zw-hero-inner { max-width: 880px; margin: 0 auto; } .zw-page .zw-hero .zw-lead { margin: 28px auto 0; max-width: 720px; } .zw-page .zw-hero-ctas { display: flex; gap: 28px; justify-content: center; align-items: center; margin-top: 36px; flex-wrap: wrap; } @media (max-width: 640px) { .zw-page .zw-hero-ctas { flex-direction: column; gap: 8px; } } .zw-page .zw-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1100px; margin: 0 auto; } .zw-page .zw-stat-num { font-size: clamp(32px, 3.6vw, 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#1C1C1E; border-radius: 28px; padding: 44px; min-height: 320px; display: flex; flex-direction: column; justify-content: flex-start; color: var(--white); transition: transform 0.3s ease; } .zw-page .zw-bento-card:hover { transform: translateY(-2px); } .zw-page .zw-bento-card .zw-eyebrow { color: #98989D; } .zw-page .zw-bento-h { font-size: 28px; font-weight: 600; color: var(--white); margin: 8px 0 12px; } .zw-page .zw-big-number { font-size: clamp(80px, 10vw, 140px); font-weight: 600; line-height: 1; letter-spacing: -0.03em; color: var(--white); } .zw-page .zw-span-2 { grid-column: span 2; } .zw-page .zw-span-3 { grid-column: span 3; } .zw-page .zw-span-4 { grid-column: span 4; min-height: 380px; } @media (max-width: 1024px) { .zw-page .zw-bento { grid-template-columns: repeat(2, 1fr); } .zw-page .zw-span-2, .zw-page .zw-span-3, .zw-page .zw-span-4 { grid-column: span 1; } } @media (max-width: 640px) { .zw-page .zw-bento { display: flex; grid-template-columns: none; gap: 14px; overflow-x: auto; overflow-y: hidden; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; -ms-overflow-style: none; margin: 0 -22px; padding: 4px 22px; scroll-padding-left: 22px; } .zw-page .zw-bento::-webkit-scrollbar { display: none; } .zw-page .zw-bento-card, .zw-page .zw-span-2, .zw-page .zw-span-3, .zw-page .zw-span-4 { grid-column: auto; flex: 0 0 85%; scroll-snap-align: start; min-height: 300px; padding: 28px; } } .zw-page .zw-split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; max-width: 1100px; margin: 0 auto; } .zw-page .zw-split-img { width: 100%; border-radius: 28px; max-height: 700px; object-fit: cover; } @media (max-width: 900px) { .zw-page .zw-split { grid-template-columns: 1fr; text-align: center; } .zw-page .zw-split-text { order: 1; } .zw-page .zw-split-img { order: 2; } } .zw-page .zw-split-stack { padding-top: 0; } .zw-page .zw-cinema { padding: 120px 0 0; text-align: center; } .zw-page .zw-cinema-cap { max-width: 820px; margin: 0 auto 56px; padding: 0 22px; } .zw-page .zw-cinema-img { width: 100%; display: block; max-height: 700px; object-fit: cover; } @media (max-width: 640px) { .zw-page .zw-cinema { padding-top: 80px; } .zw-page .zw-cinema-img { max-height: 70vh; object-fit: cover; } } .zw-page .zw-specs { max-width: 980px; margin: 0 auto; font-size: 17px; color: var(--ink); } .zw-page .zw-specs-row { display: grid; grid-template-columns: 38% 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); align-items: start; } .zw-page .zw-specs-label { color: var(--mute); font-weight: 400; font-size: 17px; line-height: 1.5; } .zw-page .zw-specs-value { color: var(--ink); font-weight: 400; font-size: 17px; line-height: 1.5; overflow-wrap: anywhere; } .zw-page .zw-specs-cat { padding: 36px 0 14px; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink); } @media (max-width: 640px) { .zw-page .zw-specs-row { font-size: 15px; padding: 14px 0; } } @media (max-width: 380px) { .zw-page .zw-specs-row { font-size: 13.5px; padding: 10px 0; } } .zw-page .zw-specs-head { text-align: center; max-width: 820px; margin: 0 auto 24px; } .zw-page .zw-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 48px; max-width: 1000px; margin: 0 auto; } .zw-page .zw-highlight-item { display: flex; gap: 14px; align-items: flex-start; } .zw-page .zw-tick { width: 24px; height: 24px; flex-shrink: 0; color: var(--ink); margin-top: 2px; } @media (max-width: 700px) { .zw-page .zw-highlights { grid-template-columns: 1fr; } } .zw-page .zw-link { color: var(--link); font-size: 17px; display: inline-flex; align-items: center; gap: 4px; padding: 10px 4px; min-height: 44px; text-decoration: none; } .zw-page .zw-link svg { width: 18px; height: 18px; } .zw-page .zw-on-dark .zw-link { color: #2997FF; } .zw-page .zw-closing { text-align: center; } .zw-page .zw-closing h2 { max-width: 820px; margin: 0 auto 56px; } .zw-page .zw-perks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; } .zw-page .zw-perk-t { font-size: 17px; font-weight: 600; color: var(--ink); } .zw-page .zw-perk-s { font-size: 14px; color: var(--mute); margin-top: 4px; } @media (max-width: 1024px) { .zw-page .zw-perks { grid-template-columns: repeat(2, 1fr); } } \u003c\/style\u003e \u003csection class=\"zw-section zw-on-dark zw-hero\"\u003e \u003cdiv class=\"zw-hero-inner\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eZWO Flat-Field APO Series\u003c\/div\u003e \u003ch2 class=\"zw-hero-h2\"\u003eFF90 APO. \u003cspan class=\"zw-mute\"\u003eFlat field, built in.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-lead\"\u003eA 90 mm f\/6.8 four-element apochromatic refractor with a native flat field and a 44 mm full-frame image circle. The all-rounder of the FF series, with the aperture for serious deep-sky imaging and the weight for an easy portable setup.\u003c\/p\u003e \u003cdiv class=\"zw-hero-ctas\"\u003e \u003ca href=\"#zw-features\" class=\"zw-link\"\u003eExplore the design \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/a\u003e \u003ca href=\"#zw-specs\" class=\"zw-link\"\u003eView specifications \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/a\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper\"\u003e \u003cdiv class=\"zw-stats\"\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e90 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eaperture\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003efour-element air-spaced APO\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e609 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003efocal length\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003ef\/6.8\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e44 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eimage circle\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003efull-frame coverage\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e3.92 kg\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eoptical tube\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003e4.52 kg with rings and dovetail\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-cinema zw-on-dark\"\u003e \u003cdiv class=\"zw-cinema-cap\"\u003e \u003cspan class=\"zw-eyebrow\"\u003eZWO FF Series\u003c\/span\u003e \u003ch2 class=\"zw-h2 zw-grad\"\u003eDesigned as an astrograph first.\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eEvery FF series telescope is built around a native flat field, so the optics, focuser and rear interfaces all serve one goal: clean stars across the whole sensor.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-flat-field-banner.webp?v=1781069482\" alt=\"ZWO FF90 APO flat-field apochromatic refractor banner\" loading=\"lazy\"\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-pullquote\"\u003e \u003cp\u003eAttach your camera, reach focus, start imaging. \u003cspan class=\"zw-mute\"\u003eNo flattener. No spacing maths.\u003c\/span\u003e\u003c\/p\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-on-dark\" id=\"zw-features\"\u003e \u003cdiv class=\"zw-bento\"\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eOptics\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eFour elements, fully air-spaced.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe FF90 APO uses a four-element, fully air-spaced apochromatic design in which all four elements work together to form the image. One ED (extra-low dispersion) glass element reduces chromatic aberration for cleaner colour correction and sharper stars.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eNative flat field\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eFlat to the edge. No flattener.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe flat imaging field is generated by the optical design itself, so there is no field flattener to buy and no back focus calculations to get right. Once focus is achieved, you are ready to capture.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFull-frame support\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003e44 mm image circle.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA 44 mm corrected image circle fully covers full-frame sensors, with sharp star fields and consistent illumination from centre to corner. Smaller APS-C and dedicated astronomy sensors have generous headroom.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFocusing\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003e1:10 dual-speed control.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA rigid 3″ rack-and-pinion focuser offers precise control, and the 1:10 coarse and fine adjustment makes critical focus easy to hit. A built-in 360° rotator at the rear sets your framing without disturbing focus.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eBuild\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eRetractable dew shield.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe dew shield retracts to shorten the tube for packing and travel. Precision CNC machining, a high-quality painted finish and an internal anti-reflection coating keep stray light down and image contrast up.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eConnectivity\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eAdapters in the box.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA photography extension tube with a 2″ filter thread is included, along with rear adapters in M48×0.75 and M54×0.75 standards. The quick-release mounting rings detach in seconds for fast setup and teardown.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eQuadruplet optics\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eFour elements. \u003cspan class=\"zw-mute\"\u003eOne flat field.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eAll four air-spaced elements work together to form the image, with one ED glass element controlling chromatic aberration for clean colour correction and tight, well-defined stars.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-four-element-optical-design.webp?v=1781069482\" alt=\"ZWO FF90 APO four-element air-spaced apochromatic optical design\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-optical-path-diagram.webp?v=1781069482\" alt=\"ZWO FF90 APO optical path diagram showing ED glass element position\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eOptical layout\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eThe light path, \u003cspan class=\"zw-mute\"\u003eend to end.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe optical layout delivers a corrected, flat field at the sensor with no additional optics in the imaging train. What leaves the objective arrives at your camera, flat.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFull-frame ready\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e44 mm \u003cspan class=\"zw-mute\"\u003eimage circle.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eFull-frame sensors are covered corner to corner with sharp star fields and consistent illumination, and smaller sensors sit comfortably inside the sweet spot.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-44mm-image-circle.webp?v=1781069482\" alt=\"ZWO FF90 APO 44mm image circle with full-frame camera support\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-focus-adjustment.webp?v=1781069482\" alt=\"ZWO FF90 APO coarse and fine focus adjustment\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eCritical focus\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eCoarse and fine, \u003cspan class=\"zw-mute\"\u003e1:10.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe rigid 3″ rack-and-pinion focuser moves heavy imaging trains smoothly, and the 1:10 fine knob gives you the resolution to land exact focus on a star.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFraming\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e360° \u003cspan class=\"zw-mute\"\u003eof rotation.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eA built-in rotator at the rear lets you set the camera angle for perfect framing without unthreading anything or disturbing focus.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-camera-rotator.webp?v=1781069482\" alt=\"ZWO FF90 APO built-in 360 degree camera rotator and 1:10 focuser\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-rings-dew-shield.webp?v=1781069482\" alt=\"ZWO FF90 APO quick-release mounting rings and retractable dew shield\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eField-ready build\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eQuick-release rings. \u003cspan class=\"zw-mute\"\u003eRetractable dew shield.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe mounting rings detach in seconds for fast setup and teardown, and the dew shield slides back to shorten the tube for transport. CNC machining and an internal anti-reflection coating keep contrast high.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eIn the box\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003ePhotography \u003cspan class=\"zw-mute\"\u003eextension tube.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eA photography extension tube with a 2″ filter thread is included, plus M48×0.75 and M54×0.75 rear adapters, connecting cameras, filters and accessories cleanly out of the box.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-extension-tube.webp?v=1781069482\" alt=\"ZWO FF90 APO photography extension tube with 2 inch filter thread\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-lightweight-compact.webp?v=1781069482\" alt=\"ZWO FF90 APO lightweight compact refractor carried in one hand\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eLightweight and compact\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e90 mm of aperture, \u003cspan class=\"zw-mute\"\u003ewithout the bulk.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eAt 90 mm aperture and 609 mm focal length, the FF90 APO gathers noticeably more light than smaller travel scopes while staying genuinely portable. The optical tube weighs 3.92 kg, or 4.52 kg with the handle, mounting rings and dovetail plate fitted.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-cinema zw-on-dark\"\u003e \u003cdiv class=\"zw-cinema-cap\"\u003e \u003cspan class=\"zw-eyebrow\"\u003eFlexible connectivity\u003c\/span\u003e \u003ch2 class=\"zw-h2 zw-grad\"\u003eOne telescope. Three configurations.\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003ePair the FF90 APO with ZWO ASI astronomy cameras, attach a DSLR or mirrorless body, or drop in a diagonal and eyepiece for visual observing. Focus is reached within a back focus range of 45–75 mm, measured from the M54–M48 interface shoulder. Visual accessories are available separately.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-connectivity-configurations.webp?v=1781052128\" alt=\"ZWO FF90 APO configurations for astrophotography cameras, DSLR and mirrorless cameras, and visual observation\" loading=\"lazy\"\u003e \u003c\/section\u003e \u003csection class=\"zw-section\" id=\"zw-highlights\"\u003e \u003cdiv class=\"zw-specs-head\"\u003e \u003ch2 class=\"zw-h2\"\u003eEvery detail, \u003cspan class=\"zw-mute\"\u003econsidered.\u003c\/span\u003e\n\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlights\"\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eFour-element, fully air-spaced apochromatic design with one ED glass element.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eNative flat-field design, no separate field flattener or spacing adjustments required.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003e44 mm image circle with full-frame sensor support and edge-to-edge sharpness.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003e3″ rack-and-pinion focuser with 1:10 coarse and fine adjustment.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eBuilt-in 360° rotator for precise camera angle adjustment.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eRetractable dew shield with internal anti-reflection coating for higher contrast.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eQuick-release mounting rings for fast setup and teardown.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003ePhotography extension tube with 2″ filter thread plus M48×0.75 and M54×0.75 rear adapters included.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper\" id=\"zw-specs\"\u003e \u003cdiv class=\"zw-specs-head\"\u003e \u003ch2 class=\"zw-h2\"\u003eSpecifications.\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"zw-specs\"\u003e \u003cdiv class=\"zw-specs-cat\"\u003eOptics\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eEffective aperture\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e90 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocal length\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e609 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocal ratio\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003ef\/6.8\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObjective type\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eFour-element air-spaced APO (includes 1 ED element)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImage circle\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e44 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eIntegrated field flattener design\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eFocuser and rotation\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocuser\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e3″ rack-and-pinion, 1:10 coarse and fine adjustment\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eCamera rotator\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eBuilt-in, 360°\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eBack focus\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eBack focus range\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e45–75 mm, measured from the M54–M48 interface shoulder\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eMaximum rear connection length (focuser retracted)\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImaging mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e75 mm (from M48×0.75 male thread)\u003cbr\u003e93 mm (from M54×0.75 male thread)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObservation mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e112 mm (from 1.25″ eyepiece holder)\u003cbr\u003e122 mm (from 2″ eyepiece holder)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eDimensions and weight\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eOverall length\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e513 mm (1.25″ interface retracted)\u003cbr\u003e550 mm (photography extension tube retracted)\u003cbr\u003e599 mm (1.25″ interface extended)\u003cbr\u003e636 mm (photography extension tube extended)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eTelescope body weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e3.92 kg\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eStandard configuration weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e4.52 kg (including handle, mounting rings and dovetail plate)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eInterfaces\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eRear interfaces\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eM64×1 – M54×0.75\u003cbr\u003eM54×0.75 – M54×0.75\u003cbr\u003eM54×0.75 – M48×0.75 (built-in M48×0.75 filter thread)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eIn the box\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFF90 APO optical tube\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eWith handle, mounting rings and dovetail plate\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003ePhotography extension tube\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eWith 2″ filter thread, M48×0.75 and M54×0.75 rear adapters\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eDocumentation\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eUser manual, inspection sheet, warranty card\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper zw-closing\"\u003e \u003ch2 class=\"zw-h2\"\u003eBuilt to last a lifetime.\u003c\/h2\u003e \u003cdiv class=\"zw-perks\"\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eAustralian warranty\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFull local cover\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eShips from Sydney\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFrom local stock\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eExpert advice\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFrom working astronomers\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003e40+ years\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eIn Australian astronomy\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003c\/div\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":45120696188997,"sku":"ZWO FF90-APO","price":1649.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff90-apo-refractor-side.webp?v=1781051973"},{"product_id":"zwo-ff110-apo-flat-field-110mm-apochromatic-refractor","title":"ZWO FF110 APO Flat-Field 110mm Apochromatic Refractor","description":"\u003cdiv class=\"zw-page\"\u003e \u003cstyle\u003e .zw-page { --black: #000000; 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display: grid; grid-template-columns: 38% 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); align-items: start; } .zw-page .zw-specs-label { color: var(--mute); font-weight: 400; font-size: 17px; line-height: 1.5; } .zw-page .zw-specs-value { color: var(--ink); font-weight: 400; font-size: 17px; line-height: 1.5; overflow-wrap: anywhere; } .zw-page .zw-specs-cat { padding: 36px 0 14px; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink); } @media (max-width: 640px) { .zw-page .zw-specs-row { font-size: 15px; padding: 14px 0; } } @media (max-width: 380px) { .zw-page .zw-specs-row { font-size: 13.5px; padding: 10px 0; } } .zw-page .zw-specs-head { text-align: center; max-width: 820px; margin: 0 auto 24px; } .zw-page .zw-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 48px; max-width: 1000px; margin: 0 auto; } .zw-page .zw-highlight-item { display: flex; gap: 14px; align-items: flex-start; } .zw-page .zw-tick { width: 24px; height: 24px; flex-shrink: 0; color: var(--ink); margin-top: 2px; } @media (max-width: 700px) { .zw-page .zw-highlights { grid-template-columns: 1fr; } } .zw-page .zw-link { color: var(--link); font-size: 17px; display: inline-flex; align-items: center; gap: 4px; padding: 10px 4px; min-height: 44px; text-decoration: none; } .zw-page .zw-link svg { width: 18px; height: 18px; } .zw-page .zw-on-dark .zw-link { color: #2997FF; } .zw-page .zw-closing { text-align: center; } .zw-page .zw-closing h2 { max-width: 820px; margin: 0 auto 56px; } .zw-page .zw-perks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; } .zw-page .zw-perk-t { font-size: 17px; font-weight: 600; color: var(--ink); } .zw-page .zw-perk-s { font-size: 14px; color: var(--mute); margin-top: 4px; } @media (max-width: 1024px) { .zw-page .zw-perks { grid-template-columns: repeat(2, 1fr); } } \u003c\/style\u003e \u003csection class=\"zw-section zw-on-dark zw-hero\"\u003e \u003cdiv class=\"zw-hero-inner\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eZWO Flat-Field APO Series\u003c\/div\u003e \u003ch2 class=\"zw-hero-h2\"\u003eFF110 APO. \u003cspan class=\"zw-mute\"\u003eFlat field, built in.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-lead\"\u003eA 110 mm f\/7.0 four-element apochromatic refractor with a native flat field and a 44 mm full-frame image circle. With 766 mm of focal length, it reaches deeper into galaxies and small nebulae while remaining a practical one-person setup.\u003c\/p\u003e \u003cdiv class=\"zw-hero-ctas\"\u003e \u003ca href=\"#zw-features\" class=\"zw-link\"\u003eExplore the design \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/a\u003e \u003ca href=\"#zw-specs\" class=\"zw-link\"\u003eView specifications \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/a\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper\"\u003e \u003cdiv class=\"zw-stats\"\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e110 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eaperture\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003efour-element air-spaced APO\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e766 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003efocal length\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003ef\/7.0\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e44 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eimage circle\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003efull-frame coverage\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e5.74 kg\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eoptical tube\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003e6.76 kg with rings and dovetail\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-cinema zw-on-dark\"\u003e \u003cdiv class=\"zw-cinema-cap\"\u003e \u003cspan class=\"zw-eyebrow\"\u003eZWO FF Series\u003c\/span\u003e \u003ch2 class=\"zw-h2 zw-grad\"\u003eDesigned as an astrograph first.\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eEvery FF series telescope is built around a native flat field, so the optics, focuser and rear interfaces all serve one goal: clean stars across the whole sensor.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-flat-field-banner.webp?v=1781069482\" alt=\"ZWO FF110 APO flat-field apochromatic refractor banner\" loading=\"lazy\"\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-pullquote\"\u003e \u003cp\u003eAttach your camera, reach focus, start imaging. \u003cspan class=\"zw-mute\"\u003eNo flattener. No spacing maths.\u003c\/span\u003e\u003c\/p\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-on-dark\" id=\"zw-features\"\u003e \u003cdiv class=\"zw-bento\"\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eOptics\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eFour elements, fully air-spaced.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe FF110 APO uses a four-element, fully air-spaced apochromatic design in which all four elements work together to form the image. One ED (extra-low dispersion) glass element reduces chromatic aberration for cleaner colour correction and sharper stars.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eNative flat field\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eFlat to the edge. No flattener.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe flat imaging field is generated by the optical design itself, so there is no field flattener to buy and no back focus calculations to get right. Once focus is achieved, you are ready to capture.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFull-frame support\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003e44 mm image circle.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA 44 mm corrected image circle fully covers full-frame sensors, with sharp star fields and consistent illumination from centre to corner. Smaller APS-C and dedicated astronomy sensors have generous headroom.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFocusing\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003e1:10 dual-speed control.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA rigid 3″ rack-and-pinion focuser offers precise control, and the 1:10 coarse and fine adjustment makes critical focus easy to hit. A built-in 360° rotator at the rear sets your framing without disturbing focus.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eBuild\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eRetractable dew shield.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eThe dew shield retracts to shorten the tube for packing and travel. Precision CNC machining, a high-quality painted finish and an internal anti-reflection coating keep stray light down and image contrast up.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-bento-card zw-span-3\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eConnectivity\u003c\/div\u003e \u003ch3 class=\"zw-bento-h\"\u003eAdapters in the box.\u003c\/h3\u003e \u003cp class=\"zw-body\"\u003eA photography extension tube with a 2″ filter thread is included, along with rear adapters in M48×0.75 and M54×0.75 standards. The quick-release mounting rings detach in seconds for fast setup and teardown.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eQuadruplet optics\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eFour elements. \u003cspan class=\"zw-mute\"\u003eOne flat field.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eAll four air-spaced elements work together to form the image, with one ED glass element controlling chromatic aberration for clean colour correction and tight, well-defined stars.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-four-element-optical-design.webp?v=1781069482\" alt=\"ZWO FF110 APO four-element air-spaced apochromatic optical design\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-optical-path-diagram.webp?v=1781069482\" alt=\"ZWO FF110 APO optical path diagram showing ED glass element position\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eOptical layout\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eThe light path, \u003cspan class=\"zw-mute\"\u003eend to end.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe optical layout delivers a corrected, flat field at the sensor with no additional optics in the imaging train. What leaves the objective arrives at your camera, flat.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFull-frame ready\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e44 mm \u003cspan class=\"zw-mute\"\u003eimage circle.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eFull-frame sensors are covered corner to corner with sharp star fields and consistent illumination, and smaller sensors sit comfortably inside the sweet spot.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-44mm-image-circle.webp?v=1781069483\" alt=\"ZWO FF110 APO 44mm image circle with full-frame camera support\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-focus-adjustment.webp?v=1781069482\" alt=\"ZWO FF110 APO coarse and fine focus adjustment\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eCritical focus\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eCoarse and fine, \u003cspan class=\"zw-mute\"\u003e1:10.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe rigid 3″ rack-and-pinion focuser moves heavy imaging trains smoothly, and the 1:10 fine knob gives you the resolution to land exact focus on a star.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eFraming\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e360° \u003cspan class=\"zw-mute\"\u003eof rotation.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eA built-in rotator at the rear lets you set the camera angle for perfect framing without unthreading anything or disturbing focus.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-camera-rotator.webp?v=1781069482\" alt=\"ZWO FF110 APO built-in 360 degree camera rotator and 1:10 focuser\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-rings-dew-shield.webp?v=1781069482\" alt=\"ZWO FF110 APO quick-release mounting rings and retractable dew shield\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eField-ready build\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003eQuick-release rings. \u003cspan class=\"zw-mute\"\u003eRetractable dew shield.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eThe mounting rings detach in seconds for fast setup and teardown, and the dew shield slides back to shorten the tube for transport. CNC machining and an internal anti-reflection coating keep contrast high.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eIn the box\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003ePhotography \u003cspan class=\"zw-mute\"\u003eextension tube.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eA photography extension tube with a 2″ filter thread is included, plus M48×0.75 and M54×0.75 rear adapters, connecting cameras, filters and accessories cleanly out of the box.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-extension-tube.webp?v=1781069482\" alt=\"ZWO FF110 APO photography extension tube with 2 inch filter thread\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-split-stack\"\u003e \u003cdiv class=\"zw-split\"\u003e \u003cimg class=\"zw-split-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-refractor-front-objective-desc.webp?v=1781052128\" alt=\"ZWO FF110 APO 110mm flat-field apochromatic refractor showing objective lens\" loading=\"lazy\"\u003e \u003cdiv class=\"zw-split-text\"\u003e \u003cdiv class=\"zw-eyebrow\"\u003eAperture and reach\u003c\/div\u003e \u003ch2 class=\"zw-h2\"\u003e110 mm of light grasp, \u003cspan class=\"zw-mute\"\u003e766 mm of reach.\u003c\/span\u003e\n\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003eWith more aperture than the FF70 and FF90, the FF110 APO pulls in significantly more light than its smaller siblings, while the 766 mm focal length frames smaller targets more tightly. The optical tube weighs 5.74 kg, or 6.76 kg with the handle, mounting rings and dovetail plate fitted.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-cinema zw-on-dark\"\u003e \u003cdiv class=\"zw-cinema-cap\"\u003e \u003cspan class=\"zw-eyebrow\"\u003eFlexible connectivity\u003c\/span\u003e \u003ch2 class=\"zw-h2 zw-grad\"\u003eOne telescope. Three configurations.\u003c\/h2\u003e \u003cp class=\"zw-body\"\u003ePair the FF110 APO with ZWO ASI astronomy cameras, attach a DSLR or mirrorless body, or drop in a diagonal and eyepiece for visual observing. Focus is reached within a back focus range of 42–73 mm, measured from the M54–M48 interface shoulder. Visual accessories are available separately.\u003c\/p\u003e \u003c\/div\u003e \u003cimg class=\"zw-cinema-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-connectivity-configurations.webp?v=1781052128\" alt=\"ZWO FF110 APO configurations for astrophotography cameras, DSLR and mirrorless cameras, and visual observation\" loading=\"lazy\"\u003e \u003c\/section\u003e \u003csection class=\"zw-section\" id=\"zw-highlights\"\u003e \u003cdiv class=\"zw-specs-head\"\u003e \u003ch2 class=\"zw-h2\"\u003eEvery detail, \u003cspan class=\"zw-mute\"\u003econsidered.\u003c\/span\u003e\n\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlights\"\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eFour-element, fully air-spaced apochromatic design with one ED glass element.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eNative flat-field design, no separate field flattener or spacing adjustments required.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003e44 mm image circle with full-frame sensor support and edge-to-edge sharpness.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003e3″ rack-and-pinion focuser with 1:10 coarse and fine adjustment.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eBuilt-in 360° rotator for precise camera angle adjustment.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eRetractable dew shield with internal anti-reflection coating for higher contrast.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003eQuick-release mounting rings for fast setup and teardown.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"zw-highlight-item\"\u003e \u003csvg class=\"zw-tick\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003cp class=\"zw-body\"\u003ePhotography extension tube with 2″ filter thread plus M48×0.75 and M54×0.75 rear adapters included.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper\" id=\"zw-specs\"\u003e \u003cdiv class=\"zw-specs-head\"\u003e \u003ch2 class=\"zw-h2\"\u003eSpecifications.\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"zw-specs\"\u003e \u003cdiv class=\"zw-specs-cat\"\u003eOptics\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eEffective aperture\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e110 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocal length\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e766 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocal ratio\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003ef\/7.0\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObjective type\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eFour-element air-spaced APO (including one ED element)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImage circle\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e44 mm\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eIntegrated field flattener design\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eFocuser and rotation\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocuser\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e3″ rack-and-pinion, 1:10 coarse and fine adjustment\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eCamera rotator\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eBuilt-in, 360°\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eBack focus\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eBack focus range\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e42–73 mm, measured from the M54–M48 interface shoulder\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eMaximum rear connection length (focuser retracted)\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImaging mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e73 mm (from the M48×0.75 male thread)\u003cbr\u003e91 mm (from the M54×0.75 male thread)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObservation mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e132 mm (from the 1.25″ eyepiece holder)\u003cbr\u003e142 mm (from the 2″ eyepiece holder)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eMinimum rear connection length (focuser retracted)\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImaging mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e42 mm (from M48×0.75 male thread)\u003cbr\u003e60 mm (from M54×0.75 male thread)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObservation mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e101 mm (from 1.25″ eyepiece holder)\u003cbr\u003e111 mm (from 2″ eyepiece holder)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eDimensions and weight\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eOverall length\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e664 mm (1.25″ interface retracted)\u003cbr\u003e728 mm (photography extension tube retracted)\u003cbr\u003e751 mm (1.25″ interface, dew shield extended)\u003cbr\u003e815 mm (photography extension tube, dew shield extended)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eTelescope body weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e5.74 kg\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eStandard configuration weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e6.76 kg (including handle, mounting rings and dovetail plate)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eInterfaces\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eRear interfaces\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eM78×1 – 55 mm extension adapter\u003cbr\u003eM78×1 – M54×0.75\u003cbr\u003eM54×0.75 – M54×0.75\u003cbr\u003eM54×0.75 – M48×0.75 (built-in M48×0.75 filter thread)\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-cat\"\u003eIn the box\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFF110 APO optical tube\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eWith handle, mounting rings and dovetail plate\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003ePhotography extension tube\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eWith 2″ filter thread, M48×0.75 and M54×0.75 rear adapters\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eDocumentation\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eUser manual, inspection sheet, warranty card\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"zw-section zw-paper zw-closing\"\u003e \u003ch2 class=\"zw-h2\"\u003eBuilt to last a lifetime.\u003c\/h2\u003e \u003cdiv class=\"zw-perks\"\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eAustralian warranty\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFull local cover\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eShips from Sydney\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFrom local stock\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eExpert advice\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFrom working astronomers\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003e40+ years\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eIn Australian astronomy\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003c\/div\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":45120698875973,"sku":"ZWO FF110-APO","price":2499.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff110-apo-refractor-side.webp?v=1781051980"},{"product_id":"zwo-ff131-apo-flat-field-131mm-apochromatic-refractor","title":"ZWO FF131 APO Flat-Field 131mm Apochromatic Refractor","description":"\u003cstyle\u003e .zw-page { --black: #000000; --ink: #1D1D1F; --paper: #F5F5F7; --white: #FFFFFF; --mute: #86868B; --line: #D2D2D7; --link: #0066CC; --accent: #C6302B; --radius: 22px; --radius-lg: 28px; font-family: -apple-system, BlinkMacSystemFont, \"SF Pro Display\", \"SF Pro\", \"Helvetica Neue\", Helvetica, Arial, sans-serif; font-weight: 400; color: var(--ink); background: var(--white); line-height: 1.47; letter-spacing: -0.003em; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; overflow-x: hidden; } .zw-page img { max-width: 100%; height: auto; } .zw-page .zw-section { padding: 120px 22px; } @media (max-width: 640px) { .zw-page .zw-section { padding: 80px 22px; } } .zw-page .zw-on-dark { background: var(--black); color: var(--white); } .zw-page .zw-paper { background: var(--paper); } .zw-page .zw-hero-h2 { font-size: clamp(60px, 9vw, 112px); font-weight: 600; line-height: 1.04; letter-spacing: -0.025em; color: var(--ink); } .zw-page .zw-h2 { font-size: clamp(40px, 5.5vw, 72px); font-weight: 600; line-height: 1.07; letter-spacing: -0.022em; color: var(--ink); } .zw-page .zw-lead { font-size: clamp(19px, 1.6vw, 24px); letter-spacing: -0.009em; color: var(--ink); } .zw-page .zw-body { font-size: 17px; letter-spacing: 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font-size: 17px; line-height: 1.5; } .zw-page .zw-specs-value { color: var(--ink); font-weight: 400; font-size: 17px; line-height: 1.5; overflow-wrap: anywhere; } .zw-page .zw-specs-cat { padding: 36px 0 14px; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink); } @media (max-width: 640px) { .zw-page .zw-specs-row { font-size: 15px; padding: 14px 0; } } @media (max-width: 380px) { .zw-page .zw-specs-row { font-size: 13.5px; padding: 10px 0; } } .zw-page .zw-specs-head { text-align: center; max-width: 820px; margin: 0 auto 24px; } .zw-page .zw-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 48px; max-width: 1000px; margin: 0 auto; } .zw-page .zw-highlight-item { display: flex; gap: 14px; align-items: flex-start; } .zw-page .zw-tick { width: 24px; height: 24px; flex-shrink: 0; color: var(--ink); margin-top: 2px; } @media (max-width: 700px) { .zw-page .zw-highlights { grid-template-columns: 1fr; } } .zw-page .zw-link { color: var(--link); font-size: 17px; display: inline-flex; align-items: center; gap: 4px; padding: 10px 4px; min-height: 44px; text-decoration: none; } .zw-page .zw-link svg { width: 18px; height: 18px; } .zw-page .zw-on-dark .zw-link { color: #2997FF; } .zw-page .zw-closing { text-align: center; } .zw-page .zw-closing h2 { max-width: 820px; margin: 0 auto 56px; } .zw-page .zw-perks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; } .zw-page .zw-perk-t { font-size: 17px; font-weight: 600; color: var(--ink); } .zw-page .zw-perk-s { font-size: 14px; color: var(--mute); margin-top: 4px; } @media (max-width: 1024px) { .zw-page .zw-perks { grid-template-columns: repeat(2, 1fr); } } \u003c\/style\u003e\n\u003cdiv class=\"zw-page\"\u003e\n\u003csection class=\"zw-section zw-on-dark zw-hero\"\u003e\n\u003cdiv class=\"zw-hero-inner\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eZWO Flat-Field APO Series\u003c\/div\u003e\n\u003ch2 class=\"zw-hero-h2\"\u003eFF131 APO. \u003cspan class=\"zw-mute\"\u003eFlat field, built in.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-lead\"\u003eA 131 mm f\/7.5 four-element apochromatic refractor with a native flat field and a 44 mm full-frame image circle. The flagship of the FF series, with 983 mm of focal length and serious light grasp for deep-sky imaging.\u003c\/p\u003e\n\u003cdiv class=\"zw-hero-ctas\"\u003e\n\u003ca class=\"zw-link\" href=\"#zw-features\"\u003eExplore the design \u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/a\u003e \u003ca class=\"zw-link\" href=\"#zw-specs\"\u003eView specifications \u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpolyline points=\"9 6 15 12 9 18\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-paper\"\u003e\n\u003cdiv class=\"zw-stats\"\u003e\n\u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e131 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eaperture\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003efour-element air-spaced APO\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e983 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003efocal length\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003ef\/7.5\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e44 mm\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eimage circle\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003efull-frame coverage\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-stat\"\u003e\n\u003cdiv class=\"zw-stat-num\"\u003e7.9 kg\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-lbl\"\u003eoptical tube\u003c\/div\u003e\n\u003cdiv class=\"zw-stat-cap\"\u003e9.4 kg with rings and dovetail\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-cinema zw-on-dark\"\u003e\n\u003cdiv class=\"zw-cinema-cap\"\u003e\n\u003cspan class=\"zw-eyebrow\"\u003eZWO FF Series\u003c\/span\u003e\n\u003ch2 class=\"zw-h2 zw-grad\"\u003eDesigned as an astrograph first.\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eEvery FF series telescope is built around a native flat field, so the optics, focuser and rear interfaces all serve one goal: clean stars across the whole sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO flat-field apochromatic refractor banner\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-flat-field-banner.webp?v=1781069482\" class=\"zw-cinema-img\"\u003e\u003c\/section\u003e\n\u003csection class=\"zw-section zw-pullquote\"\u003e\n\u003cp\u003eAttach your camera, reach focus, start imaging. \u003cspan class=\"zw-mute\"\u003eNo flattener. No spacing maths.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection id=\"zw-features\" class=\"zw-section zw-on-dark\"\u003e\n\u003cdiv class=\"zw-bento\"\u003e\n\u003cdiv class=\"zw-bento-card zw-span-3\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eOptics\u003c\/div\u003e\n\u003ch3 class=\"zw-bento-h\"\u003eFour elements, fully air-spaced.\u003c\/h3\u003e\n\u003cp class=\"zw-body\"\u003eThe FF131 APO uses a four-element, fully air-spaced apochromatic design in which all four elements work together to form the image. One ED (extra-low dispersion) glass element reduces chromatic aberration for cleaner colour correction and sharper stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-bento-card zw-span-3\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eNative flat field\u003c\/div\u003e\n\u003ch3 class=\"zw-bento-h\"\u003eFlat to the edge. No flattener.\u003c\/h3\u003e\n\u003cp class=\"zw-body\"\u003eThe flat imaging field is generated by the optical design itself, so there is no field flattener to buy and no back focus calculations to get right. Once focus is achieved, you are ready to capture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-bento-card zw-span-3\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eFull-frame support\u003c\/div\u003e\n\u003ch3 class=\"zw-bento-h\"\u003e44 mm image circle.\u003c\/h3\u003e\n\u003cp class=\"zw-body\"\u003eA 44 mm corrected image circle fully covers full-frame sensors, with sharp star fields and consistent illumination from centre to corner. Smaller APS-C and dedicated astronomy sensors have generous headroom.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-bento-card zw-span-3\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eFocusing\u003c\/div\u003e\n\u003ch3 class=\"zw-bento-h\"\u003e1:10 dual-speed control.\u003c\/h3\u003e\n\u003cp class=\"zw-body\"\u003eA rigid 3″ rack-and-pinion focuser offers precise control, and the 1:10 coarse and fine adjustment makes critical focus easy to hit. A built-in 360° rotator at the rear sets your framing without disturbing focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-bento-card zw-span-3\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eBuild\u003c\/div\u003e\n\u003ch3 class=\"zw-bento-h\"\u003eRetractable dew shield.\u003c\/h3\u003e\n\u003cp class=\"zw-body\"\u003eThe dew shield retracts to shorten the tube for packing and travel. Precision CNC machining, a high-quality painted finish and an internal anti-reflection coating keep stray light down and image contrast up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-bento-card zw-span-3\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eConnectivity\u003c\/div\u003e\n\u003ch3 class=\"zw-bento-h\"\u003eAdapters in the box.\u003c\/h3\u003e\n\u003cp class=\"zw-body\"\u003eA four-section photography extension tube with a 2″ filter thread is included, along with rear adapters in M48×0.75 and M54×0.75 standards. The quick-release mounting rings detach in seconds for fast setup and teardown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section\"\u003e\n\u003cdiv class=\"zw-split\"\u003e\n\u003cdiv class=\"zw-split-text\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eQuadruplet optics\u003c\/div\u003e\n\u003ch2 class=\"zw-h2\"\u003eFour elements. \u003cspan class=\"zw-mute\"\u003eOne flat field.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eAll four air-spaced elements work together to form the image, with one ED glass element controlling chromatic aberration for clean colour correction and tight, well-defined stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO four-element air-spaced apochromatic optical design\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-four-element-optical-design.webp?v=1781069482\" class=\"zw-split-img\"\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-split-stack\"\u003e\n\u003cdiv class=\"zw-split\"\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO optical path diagram showing ED glass element position\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-optical-path-diagram.webp?v=1781069482\" class=\"zw-split-img\"\u003e\n\u003cdiv class=\"zw-split-text\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eOptical layout\u003c\/div\u003e\n\u003ch2 class=\"zw-h2\"\u003eThe light path, \u003cspan class=\"zw-mute\"\u003eend to end.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eThe optical layout delivers a corrected, flat field at the sensor with no additional optics in the imaging train. What leaves the objective arrives at your camera, flat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-split-stack\"\u003e\n\u003cdiv class=\"zw-split\"\u003e\n\u003cdiv class=\"zw-split-text\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eFull-frame ready\u003c\/div\u003e\n\u003ch2 class=\"zw-h2\"\u003e44 mm \u003cspan class=\"zw-mute\"\u003eimage circle.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eFull-frame sensors are covered corner to corner with sharp star fields and consistent illumination, and smaller sensors sit comfortably inside the sweet spot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO 44mm image circle with full-frame camera support\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-44mm-image-circle.webp?v=1781069482\" class=\"zw-split-img\"\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-split-stack\"\u003e\n\u003cdiv class=\"zw-split\"\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO coarse and fine focus adjustment\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-focus-adjustment.webp?v=1781069482\" class=\"zw-split-img\"\u003e\n\u003cdiv class=\"zw-split-text\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eCritical focus\u003c\/div\u003e\n\u003ch2 class=\"zw-h2\"\u003eCoarse and fine, \u003cspan class=\"zw-mute\"\u003e1:10.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eThe rigid 3″ rack-and-pinion focuser moves heavy imaging trains smoothly, and the 1:10 fine knob gives you the resolution to land exact focus on a star.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-split-stack\"\u003e\n\u003cdiv class=\"zw-split\"\u003e\n\u003cdiv class=\"zw-split-text\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eFraming\u003c\/div\u003e\n\u003ch2 class=\"zw-h2\"\u003e360° \u003cspan class=\"zw-mute\"\u003eof rotation.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eA built-in rotator at the rear lets you set the camera angle for perfect framing without unthreading anything or disturbing focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO built-in 360 degree camera rotator and 1:10 focuser\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-camera-rotator.webp?v=1781069483\" class=\"zw-split-img\"\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-split-stack\"\u003e\n\u003cdiv class=\"zw-split\"\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO quick-release mounting rings and retractable dew shield\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-rings-dew-shield.webp?v=1781069482\" class=\"zw-split-img\"\u003e\n\u003cdiv class=\"zw-split-text\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eField-ready build\u003c\/div\u003e\n\u003ch2 class=\"zw-h2\"\u003eQuick-release rings. \u003cspan class=\"zw-mute\"\u003eRetractable dew shield.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eThe mounting rings detach in seconds for fast setup and teardown, and the dew shield slides back to shorten the tube for transport. CNC machining and an internal anti-reflection coating keep contrast high.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-split-stack\"\u003e\n\u003cdiv class=\"zw-split\"\u003e\n\u003cdiv class=\"zw-split-text\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eIn the box\u003c\/div\u003e\n\u003ch2 class=\"zw-h2\"\u003ePhotography \u003cspan class=\"zw-mute\"\u003eextension tube.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eA four-section photographic extension tube with a 2″ filter thread is included, plus M48×0.75 and M54×0.75 rear adapters, connecting cameras, filters and accessories cleanly out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO four-section photography extension tube with 2 inch filter thread\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-extension-tube.webp?v=1781069483\" class=\"zw-split-img\"\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-split-stack\"\u003e\n\u003cdiv class=\"zw-split\"\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO 131mm flat-field apochromatic refractor showing objective lens\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-refractor-front-objective-desc.webp?v=1781069482\" class=\"zw-split-img\"\u003e\n\u003cdiv class=\"zw-split-text\"\u003e\n\u003cdiv class=\"zw-eyebrow\"\u003eAperture and reach\u003c\/div\u003e\n\u003ch2 class=\"zw-h2\"\u003e131 mm of light grasp, \u003cspan class=\"zw-mute\"\u003e983 mm of reach.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003eThe flagship of the FF series pulls in the most light and resolves the finest detail of the range, and the 983 mm focal length frames smaller targets tightly. The optical tube weighs 7.9 kg, or 9.4 kg with the handle, mounting rings and dovetail plate fitted.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-cinema zw-on-dark\"\u003e\n\u003cdiv class=\"zw-cinema-cap\"\u003e\n\u003cspan class=\"zw-eyebrow\"\u003eFlexible connectivity\u003c\/span\u003e\n\u003ch2 class=\"zw-h2 zw-grad\"\u003eOne telescope. Three configurations.\u003c\/h2\u003e\n\u003cp class=\"zw-body\"\u003ePair the FF131 APO with ZWO ASI astronomy cameras, attach a DSLR or mirrorless body, or drop in a diagonal and eyepiece for visual observing. Focus is reached within a back focus range of 42–73 mm, measured from the M54–M48 interface shoulder. Visual accessories are available separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg loading=\"lazy\" alt=\"ZWO FF131 APO configurations for astrophotography cameras, DSLR and mirrorless cameras, and visual observation\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-connectivity-configurations.webp?v=1781069483\" class=\"zw-cinema-img\"\u003e\u003c\/section\u003e\n\u003csection id=\"zw-highlights\" class=\"zw-section\"\u003e\n\u003cdiv class=\"zw-specs-head\"\u003e\n\u003ch2 class=\"zw-h2\"\u003eEvery detail, \u003cspan class=\"zw-mute\"\u003econsidered.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-highlights\"\u003e\n\u003cdiv class=\"zw-highlight-item\"\u003e\n\u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.4\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"zw-tick\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cp class=\"zw-body\"\u003eFour-element, fully air-spaced apochromatic design with one ED glass element.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-highlight-item\"\u003e\n\u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.4\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"zw-tick\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cp class=\"zw-body\"\u003eNative flat-field design, no separate field flattener or spacing adjustments required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-highlight-item\"\u003e\n\u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.4\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"zw-tick\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cp class=\"zw-body\"\u003e44 mm image circle with full-frame sensor support and edge-to-edge sharpness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-highlight-item\"\u003e\n\u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.4\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"zw-tick\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cp class=\"zw-body\"\u003e3″ rack-and-pinion focuser with 1:10 coarse and fine adjustment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-highlight-item\"\u003e\n\u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.4\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"zw-tick\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cp class=\"zw-body\"\u003eBuilt-in 360° rotator for precise camera angle adjustment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-highlight-item\"\u003e\n\u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.4\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"zw-tick\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cp class=\"zw-body\"\u003eRetractable dew shield with internal anti-reflection coating for higher contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-highlight-item\"\u003e\n\u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.4\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"zw-tick\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cp class=\"zw-body\"\u003eQuick-release mounting rings for fast setup and teardown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-highlight-item\"\u003e\n\u003csvg stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"2.4\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"zw-tick\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cp class=\"zw-body\"\u003eFour-section photography extension tube with 2″ filter thread plus M48×0.75 and M54×0.75 rear adapters included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection id=\"zw-specs\" class=\"zw-section zw-paper\"\u003e\n\u003cdiv class=\"zw-specs-head\"\u003e\n\u003ch2 class=\"zw-h2\"\u003eSpecifications.\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs\"\u003e\n\u003cdiv class=\"zw-specs-cat\"\u003eOptics\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eEffective aperture\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e131 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocal length\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e983 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocal ratio\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003ef\/7.5\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObjective type\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eFour-element air-spaced APO (including one ED element)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImage circle\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e44 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eIntegrated field flattener design\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-cat\"\u003eFocuser and rotation\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFocuser\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e3″ rack-and-pinion, 1:10 coarse and fine adjustment\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eCamera rotator\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eBuilt-in, 360°\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-cat\"\u003eBack focus\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eBack focus range\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e42–73 mm, measured from the M54–M48 interface shoulder\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-cat\"\u003eMaximum rear connection length (focuser retracted)\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImaging mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e73 mm (from the M48×0.75 male thread)\u003cbr\u003e91 mm (from the M54×0.75 male thread)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObservation mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e131 mm (from the 1.25″ interface)\u003cbr\u003e142 mm (from the 2″ interface)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-cat\"\u003eMinimum rear connection length (focuser retracted)\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eImaging mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e42 mm (from M48×0.75 male thread)\u003cbr\u003e60 mm (from M54×0.75 male thread)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eObservation mode\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e100 mm (from 1.25″ interface)\u003cbr\u003e111 mm (from 2″ interface)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-cat\"\u003eDimensions and weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eOverall length\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e878 mm (1.25″ interface retracted)\u003cbr\u003e941 mm (photography extension tube retracted)\u003cbr\u003e963 mm (1.25″ interface, dew shield extended)\u003cbr\u003e1026 mm (photography extension tube, dew shield extended)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eTelescope body weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e7.9 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eStandard configuration weight\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003e9.4 kg (including handle, mounting rings and dovetail plate)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-cat\"\u003eInterfaces\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eRear interfaces\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eM78×1 – 55 mm extension adapter\u003cbr\u003eM78×1 – M54×0.75\u003cbr\u003eM54×0.75 – M54×0.75\u003cbr\u003eM54×0.75 – M48×0.75 (built-in M48×0.75 filter thread)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-cat\"\u003eIn the box\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eFF131 APO optical tube\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eWith handle, mounting rings and dovetail plate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003ePhotography extension tube\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eFour-section, with 2″ filter thread, M48×0.75 and M54×0.75 rear adapters\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-row\"\u003e\n\u003cdiv class=\"zw-specs-label\"\u003eDocumentation\u003c\/div\u003e\n\u003cdiv class=\"zw-specs-value\"\u003eUser manual, inspection sheet, warranty card\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"zw-section zw-paper zw-closing\"\u003e\n\u003ch2 class=\"zw-h2\"\u003eBuilt to last a lifetime.\u003c\/h2\u003e\n\u003cdiv class=\"zw-perks\"\u003e\n\u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eAustralian warranty\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFull local cover\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eShips from Sydney\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFrom local stock\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003eExpert advice\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eFrom working astronomers\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"zw-perk\"\u003e\n\u003cdiv class=\"zw-perk-t\"\u003e40+ years\u003c\/div\u003e\n\u003cdiv class=\"zw-perk-s\"\u003eIn Australian astronomy\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":45120715653189,"sku":"ZWO FF131-APO","price":3349.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ff131-apo-refractor-side.webp?v=1781069404"}],"url":"https:\/\/bintel.com.au\/collections\/astrographs.oembed?page=2","provider":"The Binocular and Telescope Shop","version":"1.0","type":"link"}