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Bintel Glebe
Usually ready for pickup in 24 hours
Bintel 84 Wentworth park road, Glebe, 2073, NSW
Phone:(02) 9518 7255
Hours:
Monday9:30 am–5:30 pm
Tuesday9:30 am–5:30 pm
Wednesday9:30 am–5:30 pm
Thursday9:30 am–5:30 pm
Friday9:30 am–5:30 pm
Saturday9:30 am–4 pm
SundayClosed
Research Grade Telescopes
Explore our selection of professional optical tube assemblies from PlaneWave, Celestron, TeleVue, and TEC. Built for precision, performance, and unmatched optical quality, these instruments meet the demanding standards of scientific research and advanced astrophotography. Ideal for universities, observatories, and educational programs looking to inspire the next generation, they deliver the performance needed for real data collection while still offering breathtaking celestial views.
Not sure which system best fits your needs? Our team has decades of hands-on experience with professional observatory and educational installations. Contact us anytime for tailored advice on choosing the right telescope for your program or research goals.
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30 products
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Celestron 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.
RASA Performance Made for Everyone
The 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.
The 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.
Purely 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.
Shorter Exposure Times and Virtual “Real-Time” Observing
Since 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.
Because 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.
Ultra-Stable Focus System
With 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.
Built for Today’s Latest Cameras
Unlike 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.
| Camera | Compatible with RASA 8? | Adapter required |
|---|---|---|
| Astronomical CMOS/CCD camera with C-mount | Yes | C-mount adapter (included) |
| Astronomical CMOS/CCD camera with M42-thread mount | Yes | M42 adapter (included) with M42 extension tubes (not included) |
| Astronomical CMOS/CCD camera with other mount | Yes | Custom camera adapter |
| Canon mirrorless with APS-C sensor | Yes |
Canon mirrorless adapter
(sold separately) |
| Sony mirrorless with APS-C sensor | Yes |
Sony mirrorless adapter
(sold separately) |
| Canon mirrorless with full frame (42mm) sensor | Yes, but not optimized across the full sensor |
Canon mirrorless adapter
(sold separately) |
| Sony mirrorless with full frame (42mm) sensor | Yes, but not optimized across the full sensor |
Sony mirrorless adapter
(sold separately) |
| DSLR | No | -- |
Unique Optical Design
RASA’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.
With 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.
All 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.
When compared with “Hyperstar SCT” systems, the RASA 8 provides better optical performance and field illumination.
| OPTICAL TUBE INFO: | |
|---|---|
| Optical Design | Rowe-Ackermann Schmidt Astrograph |
| Aperture | 203mm (8") |
| Focal Length | 400mm (15.74") |
| Focal Ratio | f/2.0 |
| Central obstruction diameter | 93mm (3.66") (46% of aperture diameter) |
| Light Gathering Power (Compared to human eye) | 843x |
| Resolution (Rayleigh) | 0.68 arc seconds |
| Resolution (Dawes) | 0.57 arc seconds |
| Image Circle | 22mm (.86") Ø, 3.15° |
| Useable field | 32mm (1.26") Ø, 4.6°, only minimal performance loss at edge of FOV |
| Wavelength range | 390 - 800 nm |
| Spot size | < 4.6 μm RMS across image circle |
| Optical Coatings | StarBright XLT |
| Off-axis Illumination | 93% at 11mm (.43") off-axis |
| Optical Window | 46mm (1.81") Ø |
| Back focus with included camera adapter | 25mm (.98") |
| Back focus from top of threaded collar | 29mm (1.14") |
| Optical Tube | Aluminum |
| Optical Tube Length | 628mm (24.7") length | 235mm (9.3") diameter |
| Focuser | Ultra-Stable Focusing System |
| Finderscope | Not included |
| Optical Tube Weight | 17 lbs (7.7 kg) |
| Other Features | Air-cooling system, integrated filter mount |
| Included items | M42 camera adapter, C-thread camera adapter, fan battery pack |
| Dovetail | CGE Dovetail Bar |
SKY & TELESCOPE’S HOT PRODUCTS 2019 AWARD
"Incredibly fast optical speeds allow deep-sky imaging with short exposures, opening up a new world of scientific- and recreational-astrophotography possibilities."
Q: Why can’t the Rowe-Ackermann Schmidt Astrograph (RASA) 8 be used visually?
A: The 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.Q: Why was the RASA 8 designed to have a camera mount at the front of the telescope?
A: The 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.Q: Won’t the camera block the incoming light?
A: The 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.Q: What cameras can be used with the RASA 8?
A: The 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).Q: Why can’t a DSLR be used with the RASA 8?
A: The 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.Q: What about camera cables in front of the optics?
A: Camera 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.Q: Will I need additional camera adapters for my camera?
A: It 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.Q: What is the difference between the image circle and the useable field?
A: The 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.Q: What if my camera’s sensor is larger than the useable field?
A: The 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.Q: Can filters be used with the RASA 8?
A: The 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.Q: Why does the RASA 8 have a removeable optical window?
A: With 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.Q: Why is the fast focal ratio (F/2.0) of the RASA 8 such a big deal?
A: Because 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.Q: What mounts can be used with the RASA 8?
A: Any 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.
Q: Will I need to collimate (i.e. align) the optics?
A: The 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.
Q: What is focus shift, and how does the Ultra-Stable Focus System (USFS) help to minimize it?
A: Focus 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.
Q: What is the extended spectral range (400-800 nm) and what is the benefit?
A: Most 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.
Q: What else might be needed with the RASA 8?
A: A 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.
Q: What is the purpose of the integrated air-cooling system?
A: The 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.
Q: What is the difference between RASA 8 and an 8” SCT or EdgeHD using the Starizona Hyperstar accessory?
A: The 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.
Q: What about dew?
A: Just 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.
$8,499.00
Normally available for pickup or shipping approx. 2-3 business days from your order
Celestron EdgeHD 11 OTA
See the Universe in HD
EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of view. The optical system was designed to reduce more than just off-axis star coma; it also provides an astrograph-quality flat focal plane all the way to the edge of the field of view...
True Astrograph Quality
Many optical designs that advertise themselves as "astrographs" actually only produce pinpoint stars across a curved focal plane. While this may be acceptable for some visual observing, stars will appear out of focus at the edge when used with the flat chip sensor of a digital camera. EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt-Cassegrain telescope and dramatically flatter than competing coma-free designs. This guarantees you visibly sharp stars across some of the largest CCD chips available today.
Improved Performance
Superior edge performance not only creates rounder, more pleasing stars, but actually improves the resolution and limiting magnitude when compared to telescopes of equal aperture. With Celestron’s StarBright XLT optical coatings on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum.
Mechanical Features
In addition to Celestron EdgeHD 11 OTA optimized optical design, the telescope tube has been redesigned to make sure you get the most from your optics each and every night.
- Mirror clutches - Flexible tension clutches hold the mirror in place and reduce image shift when taking long exposure astro-images. Once focused, the flexible rods allow the mirror to be held in place without putting any force or pressure on the mirror assembly, keeping the image centered in the eyepiece (or on the sensor).
- Tube vents - Cooling vents located on the rear cell allow hot air to be released from behind the primary mirror. Each vent has an integrated 95-micron micromesh filter guaranteed to let warm air out without letting dust in.
- Fastar versatility - EdgeHD is the most versatile imaging telescope available today. At its native f/10, you can achieve the image scale necessary to capture the smallest of deep sky objects. Add the optional reducer lens—custom-designed for your size EdgeHD tube—and you can increase your field of view without sacrificing optical performance. A Barlow gives you added power for high-resolution planetary, lunar and solar imaging. All EdgeHD optical tubes are Fastar-compatible, allowing the secondary mirror to be removed and replaced with a third party lens accessory for ultra-fast f/2 wide field imaging.
Individually Tested
Every EdgeHD that ships has been tested not only for the surface quality of each optical component, but also with a camera and artificial star to ensure the imaging system meets our rigid quality assurance. This “final acceptance test” confirms the EdgeHD will perform in the field and deliver high-quality astroimages.
Specifications
| Optical Design | EdgeHD |
|---|---|
| Aperture (mm) | 279.4 mm (11 in) |
| Focal Length | 2800 mm |
| Focal Ratio | 10 |
| Focal Length of Eyepiece 1 (mm) | 23 mm |
| Magnification of Eyepiece 1 | 122 x |
| Finderscope | 9x50 |
| Star Diagonal | 2" w/ 1.25" adapter |
| Optical Tube | Aluminium |
| Limiting Stellar Magnitude | 14.7 |
| Resolution (Rayleigh) | 0.5 arc seconds |
| Resolution (Dawes) | 0.42 arc seconds |
| Light Gathering Power (Compared to human eye) | 1593 x |
| Secondary Mirror Obstruction | 3.75 in (95 mm) |
| Secondary Mirror Obstruction by Diameter | 34% |
| Secondary Mirror Obstruction by Area | 12% |
| Optical Coatings | StarBright XLT |
| Optical Tube Length | 610 mm |
| Optical Tube Weight | 13 kg |
| Dovetail Compatibility | CGE Mount |
$14,899.00
Celestron EdgeHD 14 OTA
See the Universe in HD
EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of view. The optical system was designed to reduce more than just off-axis star coma; it also provides an astrograph-quality flat focal plane all the way to the edge of the field of view.
True Astrograph Quality
Many optical designs that advertise themselves as "astrographs" actually only produce pinpoint stars across a curved focal plane. While this may be acceptable for some visual observing, stars will appear out of focus at the edge when used with the flat chip sensor of a digital camera.
EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt-Cassegrain telescope and dramatically flatter than competing coma-free designs. This guarantees you visibly sharp stars across some of the largest CCD chips available today.
Improved Performance
Superior edge performance provides two distinct advantages. You'll enjoy rounder, more pleasing stars. It also improves the resolution and limiting magnitude when compared to telescopes of equal aperture. With Celestron’s StarBright XLT optical coatings on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum.
Mechanical Features
In addition to EdgeHD’s optimized optical design, the telescope tube has been redesigned to make sure you get the most from your optics each and every night.
- Mirror clutches - Flexible tension clutches hold the mirror in place and reduce image shift when taking long exposure astro-images. Once focused, the flexible rods allow the mirror to be held in place without putting any force or pressure on the mirror assembly, keeping the image centered in the eyepiece (or on the sensor).
- Tube vents - Cooling vents located on the rear cell allow hot air to be released from behind the primary mirror. Each vent has an integrated 95-micron micromesh filter guaranteed to let warm air out without letting dust in.
- Fastar versatility - EdgeHD is the most versatile imaging telescope available today. At its native f/10, you can achieve the image scale necessary to capture the smallest of deep sky objects. Add the optional reducer lens—custom-designed for your size EdgeHD tube—and you can increase your field of view without sacrificing optical performance. A Barlow gives you added power for high-resolution planetary, lunar and solar imaging. All EdgeHD optical tubes are Fastar-compatible, allowing the secondary mirror to be removed and replaced with a third party lens accessory for ultra-fast f/2 wide field imaging.
Individually Tested
Every EdgeHD that ships has been tested not only for the surface quality of each optical component, but also with a camera and artificial star to ensure the imaging system meets our rigid quality assurance. This “final acceptance test” confirms the EdgeHD will perform in the field and deliver high-quality astroimages.
Specifications
23 mm2581 x
| Optical Design | EdgeHD |
|---|---|
| Aperture (mm) | 355.6 mm (14 in) |
| Focal Length | 3910 mm |
| Focal Ratio | 11 |
| Focal Length of Eyepiece 1 (mm) | |
| Magnification of Eyepiece 1 | 170 x |
| Finderscope | 9x50 |
| Star Diagonal | 2" w/1.25" adapter |
| Optical Tube | Aluminium |
| Limiting Stellar Magnitude | 15.3 |
| Resolution (Rayleigh) | 0.39 arc seconds |
| Resolution (Dawes) | 0.33 arc seconds |
| Light Gathering Power (Compared to human eye) | |
| Secondary Mirror Obstruction | 114 mm |
| Secondary Mirror Obstruction by Diameter | 32% |
| Secondary Mirror Obstruction by Area | 10% |
| Optical Coatings | StarBright / XLT |
| Optical Tube Length | 787 mm |
| Optical Tube Weight | 21 kg |
| Dovetail Compatibility | CGE Mount |
$16,280.00
Tele Vue NP127is
For 25 years, Tele Vue has pushed the boundaries of APO refractors, as well as eyepieces, to the recognised pinnacle of performance. The Tele Vue NP127is retains the exemplary wide field and planetary visual capability while adding new features to make imaging easier and more flexible.
Tele Vue was determined to make the NP series optically, mechanically, and functionally as perfect as possible for imaging up to 50mm diagonal chips without penalty to its near-ideal visual operation.
By applying the developments created for the TeleVue60is to the new NP127is and then going beyond the results speak for themselves.
The NP127is maintains its 127mm f/5.2 optical specifications yet with a redesigned 4-element optical system. The larger rear lens group absolutely minimises vignetting in formats up to 50mm measured diagonally across the chip. An optional field corrector is available so the corners of the newly brightened edges are virtually as perfect as the centre of the field. To prevent restriction of the larger converging light cone the focuser has a 3" front aperture and a 2.4" rear aperture.
The new drawtube has features allowing quick changes from visual to imaging operation. While imaging cameras can be rotated without changing focus (just remember to do new flats!). It also has the capability to correct for any residual focal plane tilt so the imaging chip is square on to the light path.
The imaging insert ring is threaded to accept Tele Vue's new Imaging System accessories including large diameter extension tubes, optical accessories, and camera/CCD attachments all with mating threads.
TeleVue builds and tests the rack and pinion focuser to hold more than 5kg of weight, yet still permit extremely fine focusing control via a 10:1 dual-speed pinion assembly (measurable with the optional Digital Micrometer Kit). The optional Focusmate driver also permits electric motorised control of the focusing process. The new Focusmaster software interface allows this entire procedure to be completed from a PC or laptop.
Tele Vue has been known for producing visual instruments "even better than you imagined". The new NP127is is evidence that they aim to achieve the same with their imaging equipment
Tele Vue NP127is Specifications
| Type | APO (Nagler-Petzval) Refractor (Elements/Groups: 4/2) |
| Objective (mm) | 127 |
| Focal Length (mm) | 660 |
| Focal Ratio (f/#) | 5.2 |
| Drawtube/Focuser | 2.4-inch, Focusmate dual-speed rack/pinion |
| Length OTA (mm) | 851 |
| Length with diagonal (mm) | 927 (with 2-inch diagonal) |
| Weight OTA (kg) | 7 |
| Maximum Visual Field (deg.) | 4.25° (with 2-inch 41mm Panoptic) |
| Maximum Recommended Power (x) | 300 |
After a short wait, the "re-tweaked" TV127is is available. Never ones to rest, Tele Vue took the opportunity to to make small but meaningful changes to their flagship model. Both the optical and mechanical designs have been revised to reduce atmospheric defocusing sensitivity. The new lens prescription delivers smaller spot sizes over a broader wavelength range than before, while a new stainless steel front cell helps provide better thermal stability in extreme climates. Advanced multi-coatings are applied to maximize contrast and transmission. Still the fastest in the industry, there is just no competitive comparison considering its f/5.2 speed and flat-field.
$68,999.00
CDK20’s Key Features
Large Aperture and Moderate Focal Ratio
The 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.
Advanced Optical Design
Equipped 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.
Robust Mechanical Structure
Built 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.
High-Performance Mirrors and Coatings
Utilizing 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.
Thermal Management
The 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.
Integrated Dew Control
The 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.
Application-Specific Benefits
Astrophotography
With 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.
Astronomy Research
The 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.
Visual Observations
The 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:
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
The 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.
Optical Systems
| Aperture | 508mm (20") |
| Focal Length | 3454mm (136") |
| Focal Ratio | f/6.8 |
| Central Obstruction | 39% of the Primary Mirror Diameter |
| Back Focus From Mounting Surface | 224 mm (8.81") |
| Weight | 140 lbs (63.5 kg) |
| OTA Length | 1194 mm (47") |
| Optical Design Performance | 1.5-micron RMS on-axis, 3.8-micron RMS at 12 mm off-axis, 6.0-micron at 21 mm off-axis |
| Upper Cage | Carbon fiber truss |
| Lower Cage | Carbon fiber truss and light shroud |
| Image Circle Size | 52mm |
Secondary Mirror
| Diameter | 191 mm (7.5") |
| Material | Fused silica (quartz) |
| Shape | Spherical |
| Coating | Enhanced Aluminum - 96% |
Lens Group
| Diameter | 90mm (3.54") |
| Coating | Broadband AR Coatings (less than .5% reflected from 400 to 700 nm) |
Primary Mirror
| Optical Diameter | 508 mm (20") |
| Outer Diameter | 521 mm (20.5") |
| Shape | Prolate Ellipsoid |
| Material | Fused Silica (quartz) |
| Coating | Enhanced Aluminum - 96% |
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror |
$7,749.00
Capturing 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.
RASA 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.
Today, 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.
Combine 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.
Optical Performance
The 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.
Advanced Features
RASA 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.
Engineered 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.
| OPTICAL TUBE INFO: | |
|---|---|
| Optical Design | Rowe-Ackermann Schmidt Astrograph |
| Aperture | 279mm (11") |
| Focal Length | 620mm (24.4") |
| Focal Ratio | f/2.2 |
| Central obstruction diameter | 114mm (4.48") (41% of aperture diameter) |
| Light Gathering Power (Compared to human eye) | 1588x |
| Resolution (Rayleigh) | 0.49 arc seconds |
| Resolution (Dawes) | 0.41 arc seconds |
| Image Circle | 43.3mm (1.7") Ø , 4.0° |
| Useable field | 52mm (2.04") Ø , 4.8° only minimal performance loss at edge of FOV |
| Wavelength range | 400 - 700 nm |
| Spot size | < 4.4 μm RMS across FOV |
| Optical Coatings | StarBright XLT |
| Off-axis Illumination | 83% at 21mm (.82") off-axis |
| Optical Window | 68mm (2.67") Ø |
| Back focus with included camera adapter | 55mm (2.16") |
| Back focus from top of threaded collar | 72.8mm (2.86") |
| Optical Tube | Aluminum |
| Optical Tube Length | 838.2mm (33") |
| Optical Tube Diameter | 330.2mm (13") |
| Focuser | Ultra-Stable Focus System |
| Finderscope | Not included |
| Optical Tube Weight | 43 lbs (19.5 kg) |
| Other Features | Ventilation fan, dual dovetail mounting bars |
| Included items | 42mm (1.65") T-thread camera adapter | 48mm (1.89") camera adapter | Dust cover | Fan battery pack |
| Dovetail | CGE Dovetail Bar |
$9,420.00
Tele Vue-NP101is
We were determined to make the NP series optically, mechanically, and functionally as perfect as possible for imaging up to 50mm diagonal chips without penalty to its near-ideal visual operation. (Reviewer Note.) How? By applying the developments created for the Tele Vue-60is to the new NP101is and NP127is and then going beyond.
The NP101 (540mm, f/5.4, 4") maintains its optical specifications yet with a redesigned 4-element optical system. Larger rear lens groups absolutely minimize vignetting in formats up to 50mm diagonal. For these large chips, an optional field corrector was developed so the corners of the newly brightened edges would virtually be as perfect as the center of the field.
Next, to take full advantage of the larger lenses, we developed a larger focuser and draw tube having a 3" front aperture and 2.4" rear aperture. This eliminates any restriction of the larger diameter converging light cone. We build and test the rack and pinion focuser to hold more than 5kg of weight, yet still permit extremely fine focusing control via a 10:1 dual-speed pinion assembly. This new draw tube also permits quick change from visual to imaging operation and allows full camera rotation without focus change. In addition, it has the capability to correct for any residual focal plane tilt and accepts a "position stop" for our digital micrometer to allow repeatable focus measurement to 0.0001".
To maintain squareness to the optical axis while changing camera orientation, the drawtube has four lock screws that tighten against a taper on the "imaging insert" ring. This insert is threaded to accept Tele Vue's new Imaging System accessories including large diameter extension tubes, optical accessories, and camera and CCD attachments, all with mating threads.
The Focusmate 10:1 planetary ball type reduction focuser provides extremely sensitive focus adjustment, measurable with the optional Digital Micrometer Kit to better than 1/10,000". Also, the optional Focusmate Driver permits electronic motor control of the focusing process. The Focusmate Driver has direction push-buttons and adjustable speed. A tap on the button permits vibration-free focusing in steps as small as approximately 0.0005". The Focusmate Driver can be remotely computer-controlled with Focusmaster Computer Interface.
Tele Vue has been known for producing visual instruments "even better than you imagined." We aim to achieve the same with our imaging equipment. Our dedicated local machinists and in-house staff are as committed as ever to deliver on these quality and performance goals.
Tele Vue NP101is Specifications
| Type | APO (Nagler-Petzval) Refractor (Elements/Groups: 4/2) |
| Objective (mm) | 101 |
| Focal Length (mm) | 540 |
| Focal Ratio (f/#) | 5.4 |
| Drawtube/Focuser | 2.4-inch, Focusmate dual-speed rack/pinion |
| Length OTA (mm) | 648 |
| Weight OTA (kg) | 4.8 |
| Maximum Visual Field (deg.) | 5.1 (with 2-inch 41mm Panoptic) |
| Maximum Recommended Power (x) | 250 |
$117,999.00
After 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!
- Corrected Cassegrain focus optical design
- Aperture – 508 mm (20″)
- Focal length – 1537 mm
- Focal Ratio – f/3.03
- 70mm Image Circle > 2.6 degrees
- Fixed Primary Mirror
- Collimation performed via 3 tip/tilt screws at the secondary mirror
- 9.166” (232.8 mm) from mounting surface (without focuser and rotator).
- Backfocus of 5.81″ (147.6mm) with Series-5XL focuser and Series-5 Rotator installed (with focuser at midpoint of travel range).
- Built-in primary and secondary dew heaters with temperature sensors
- Compatible with L-500 or 600 series direct drive mounts.
Our 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.
Last, 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.
Carbon Fiber Tube Design
Minimizes 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.
Collimation software
Along 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.
3D Printed Baffles
PlaneWave'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.
Cooling Fans
Three 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.
The fans are controlled via the PWI 4 software with the PlaneWave Series 5 Controller sold separately.
Dew Control Ready
For 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.
Optical system
| Optical Design | Corrected Cassegrain |
| Aperture | 508 mm (20 inch) |
| Focal Length | 1537 mm (60.5 inch) |
| Focal ratio | f/3 |
| Central Obstruction | 59 % by diameter |
| Back Focus from Mounting Surface (No focuser/rotator installed) | 9.166 in (232.8 mm) from mounting surface; 7.271 inch (184.7 mm) from lens cell |
| Weight | 165 lbs (75 kg) |
| OTA Length | 35.1 inch (892 mm) |
| Optical Design Performance (Spot Diameter) | 3.86 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) |
| Telescope Cage | Carbon fiber truss poles with carbon fiber shroud |
| Optimal Field of View | 70mm image circle |
Primary Mirror
| Optical Diameter | 20 inch (508 mm) |
| Outer Diameter | 20.8 inch (528 mm) |
| Shape | Prolate ellipsoid |
| Material | Fused silica (quartz) |
| Coating | Enhanced aluminum – 96% |
Secondary Mirror
| Diameter | 286 mm (11.26 inch) |
| Material | Fused silica (quartz) |
| Shape | Spherical |
| Coating | Enhanced aluminum – 96% |
Lens Group
| Diameter | 160 mm (6.3 inch) Largest Lens |
| Number of lenses | Three |
| Coating | Broadband AR Coatings (on avg. less than .5% reflected from 400 to 700 nm) |
Included items
| Heating elements for dew prevention | The heating pads on the primary and secondary mirror require the Series 5 Controller (sold separately). |
| OTA Cover | Which protects the primary mirror and the inside of the optical tube. |
| Flashdrive | Contains software and instructions for collimation and spacing the primary to the secondary mirror. |
| Wrench Set (5812A35) | Standard hex wrenches (European orders only) |
Configurations
For the DeltaRho 500 and Series-5XL Focuser:
To achieve proper mechanical clearance, a 0.5″ spacer (#6003165) is required.
If the user plans on using our Focuser and Rotator, the 0.5″ spacer is placed in between the Focuser and Rotator, then the Tip-Tilt Adapter.
If the user plans on using only the focuser, the 0.5″ spacer, assembles as follows: OTA, Focuser, Spacer, then Tip-Tilt Adapter.
The Tip Tilt Adapter is compatible with the Series- 5XL Focuser, as both the focuser and the tip-tilt accessory use the 7.125″ flange interface.
Recommended Accessories
Mount Accessories
- L-500 Direct Drive Mount (600550)
Imaging Accessories
- Tip-Tilt Adapter for Series-5 Focuser or Rotator to SecureFit (6061006)
OTA Accessories
- 0.5″ Extension Spacer for 7.125″ Flange Interface (6003165)
- Piggyback Dovetail Bar (201990)
- Series-5XL Focuser (6071001)
- Series-5 Rotator (6021001)
- Series-5 Controller (600199)
$38,000.00
Through years of dreaming of the perfect telescope for wide-field imaging, our pursuit of innovation has finally been honored with PlaneWave’s revolutionary DeltaRho 350 f/3 telescope. The 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!
- Corrected Cassegrain focus optical design
- Aperture – 350 mm
- Focal length – 1050 mm
- Focal Ratio – f/3
- 60mm Image Circle > 3 degrees
- Fixed Primary Mirror
- Collimation performed via 3 tip/tilt screws at the secondary mirror
- Backfocus of 5.651” (143.535 mm) from mounting surface (without focuser and rotator). This distance includes refraction from filters.
- Backfocus of 2.525″ (64.135 mm) with Series-5 focuser and Series-5 Rotator installed (with focuser at midpoint of travel range).
- Built-in primary and secondary dew heaters with temperature sensors
- *L-350 mount seen in product photo is sold separately
Capturing 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.
The 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!
Additionally, 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!
Optical System
| Optical Design | Corrected Dall-Kirkham (CDK) |
| Aperture | 350 mm |
| Focal Length | 1050 mm (41.34 in.) |
| Focal ratio | f/3 |
Secondary Mirror
| Diameter | 7.48 in. (190 mm) |
| Material | Fused silica (quartz) |
| Shape | Spherical |
| Coating | Enhanced aluminum – 96% |
Primary Mirror
| Optical Diameter | 13.78 inches (350mm) |
| Outer Diameter | 14.5 inches (468.3mm) |
| Shape | Prolate Ellipsoid |
| Material | Fused Silica (quartz) |
Lens Group
| Diameter | 110 mm (4.33 inch) |
| Number of lenses | Three |
| Coating | Broadband AR Coatings (less than .5% reflected from 400 to 700nm) |
Standard Features
| Corrected Cassegrain | The corrected design yields a flat field free from off-axis astigmatism, coma, and field curvature. |
| Carbon Fiber Truss Design | Minimizes thermal expansion which causes focus shift with changes in temperature. |
| Dovetail Expansion Joint | Allows 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 |
| Cooling Fans | Three 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. |
| Delta-T Ready | For 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. |
Shipping
| Crated Shipping Weight | 225 lbs | 102 KG |
| Crate Width | 31 inches | 787.4 mm |
| Crate Height | 26 inches | 660.4 mm |
| Crate Length | 53 inches | 1346.2 mm |
Included Items
| Heating elements for dew prevention | The heating pads on the primary and secondary mirror require the 5-Series Controller sold separately |
| OTA Cover | To protect the primary mirror and inside of the optical tube |
| Flashdrive | Contains software and instructions for collimation and spacing the primary to secondary mirror |
| Wrench Set (5812A35) | Standard hex wrenches (European orders only) |
Recommended Accessories
OTA Accessories
- Series-5 Focuser (6011001)
- Series-5 Rotator (6021001)
- Series-5 Controller (600199)
Mount Accessories
- L-350 Direct Drive Mount (600549)
- DeltaRho 350 Piggyback Dovetail (140990)
Imaging Accessories
- Tip-Tilt Adapter for Series-5 Focuser or Rotator to SecureFit (6061006)
$61,199.00
The 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
Key Features of the CDK350 Observatory System
CDK14 Optical Tube Assembly
- Aperture 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.
- Advanced 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.
- High-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.
- Superior 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.
- Thermal 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.
L-350 Direct Drive Mount
- Direct 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.
- High-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.
- Azimuth 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.
- Rapid 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.
Application-Specific Advantages
Astrophotography
The 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.
Astronomy Research
Researchers 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.
Visual Observations
For 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.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
With 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.
Mount System
| Mount Weight | 50kg (110 lbs) |
| Max. Load Capacity | 45 kg (100 lbs) |
| Latitude Range | 0 to 90 degrees, Northern and Southern hemispheres |
| Cable Management | Equipment cables can be wired through mount |
Control system
| Control Electronics | PlaneWave Interface dual axis telescope control |
| User Interface | PlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software |
| Homing Sensors | Home position sensors are included allowing the mount to find its home position on power up. |
| Slew Rate | 20 degrees per second (standard); 50 degrees per second (maximum), both axes |
| Power Requirement | Accepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter |
Optical Systems
| Aperture | 356mm (14") |
| Focal Length | 2563 mm (101") |
| Focal Ratio | f/7.2 |
| Central Obstruction | 23.5% by surface area; 48.5% of the Primary Mirror Diameter |
| Back Focus | 282 mm (11.09") |
| Weight | 22 kg (48 lbs) |
| Optimal Field of View | 52 mm Image Circle |
Mechanical Structure
| Fork Assembly | L-350 Mount |
| Fork Base | Welded stainless steel torsion box |
| Optical Tube | Carbon fiber truss and light shroud |
| Instrument Payload | 45 kg (100 lbs) |
Motion control
| Motor – Azimuth and Altitude | Direct Drive 3 Phase Axial-Flux Torque Motors |
| Encoder – Azimuth and Altitude | 152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution). |
| Motor Torque | Approximately 20 ft-lbs continuous; 50 ft-lbs peak |
| Drive Electronics | Industrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card |
| Telescope Control Software | PlaneWave 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. |
Included items
| Heating elements for dew prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube |
| Flash drive -Contains PWI4 software for mount control , instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror |
| Hardware - 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 |
| One 16′ USB cable - To connect the mount to the observatory control computer |
| One 120VAC power cable - To provide power to the mount |
| Standard Allen Key set - For tightening bolts used on the mount |
| Gamepad - Used for control of the mount tracking speeds for visual observing |
| Keller EZ-Saddle (600182) - The Keller EZ saddle comes standard with the L-350 mount |
$53,499.00
The 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.
Key Features of the CDK300 Observatory System
CDK12.5 Optical Tube Assembly
- Aperture and Focal Length: 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.
- Advanced Optical Design: 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.
- High-Quality Construction: 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.
- Superior Mirrors and Coatings: 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.
- Thermal Management: 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.
L-350 Direct Drive Mount
- Direct Drive Motors: 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.
- High-Resolution Encoders: Integrated high-resolution encoders offer precise positioning, essential for capturing high-quality astrophotography and conducting detailed astronomical research.
- Azimuth Dovetail Balance System: 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.
- Azimuth Dovetail Balance System: 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.
- Rapid Target Acquisition: 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.
Application-Specific Advantages
Astrophotography
The 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.
Astronomy Research
Researchers 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.
Visual Observations
For 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.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
With 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.
Mount System
| Mount Weight | 50kg (110 lbs) |
| Max. Load Capacity | 45 kg (100 lbs) |
| Latitude Range | 0 to 90 degrees, Northern and Southern hemispheres |
| Cable Management | Equipment cables can be wired through mount |
Control System
| Control Electronics | PlaneWave Interface dual axis telescope control |
| User Interface | PlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software |
| Homing Sensors | Home position sensors are included allowing the mount to find its home position on power up. |
| Slew Rate | 20 degrees per second (standard); 50 degrees per second (maximum), both axes |
| Power Requirement | Accepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter |
Optical Systems
| Aperture | 318 mm (12.5 inch) |
| Focal Length | 100.04 inch (2541 mm) |
| Focal Ratio | f/8 |
| Central Obstruction | 42% of the primary mirror diameter |
| Backfocus from Mounting Surface | 265 mm (10.445 inch) |
| Backfocus from Racked in Focuser | 183 mm (7.2 inch) |
| Weight | 19 kg (42 lbs) |
| Optimal Field of View | 52 mm image circle |
Mechanical Structure
| Fork Assembly | L-350 Mount |
| Fork Base | Welded stainless steel torsion box |
| Optical Tube | Carbon fiber |
| Instrument Payload | 45 kg (101 lbs) |
Motion Control
| Motor – Azimuth and Altitude | Direct Drive 3 Phase Axial-Flux Torque Motors |
| Encoder – Azimuth and Altitude | 152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution). |
| Motor Torque | Approximately 20 ft-lbs continuous; 50 ft-lbs peak |
| Drive Electronics | Industrial grade, off-the-shelf brushless motor drives for each axis with custom-designed interface card |
| Telescope Control Software | PlaneWave 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. |
Included Items
| Heating elements for dew prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube |
| Flash drive - Contains PWI4 software for mount control, instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror |
| Hardware - 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 |
| One 16′ USB cable - To connect the mount to the observatory control computer |
| One 120VAC power cable - To provide power to the mount |
| Standard Allen Key set - For tightening bolts used on the mount |
| Gamepad - Used for control of the mount tracking speeds for visual observing |
| Keller EZ-Saddle (600182) - The Keller EZ saddle comes standard with the L-350 mount |
| One 16′ USB cable - To connect the mount to the observatory control computer |
$14,990.00
Pictured Telescope is a prototype. (binoviewer not included)
- The APO140FL F/9.6 features an air-spaced apochromatic-doublet objective with a Fluorite (CaF2) rear element that results in a lighter objective.
- The objective weighs about 2.5 lbs., compared to 5 lbs. for the APO140FL F/7 version, allowing it to come to temperature more quickly.
- Starting 2025, the objective includes anti-reflective and hydrophobic coatings for easier cleaning and maintenance.
- Housed in an aluminum cell, it provides excellent thermoregulation while remaining lightweight and strong.
- The optical assembly is inside a lightweight aluminum tube with sharp-edged baffles.
- No collimation is needed after the scope leaves TEC.
- Comes equipped with a Starlight Instruments FTF#2545 Feather Touch Focuser with coarse and fine 9:1 planetary reduction.
- The 2" locking metal collet is temperature-insensitive and holds loads with precision and concentricity.
In classic refractor fashion, the TEC APO140FL F/9.6 is a no-compromise, no-frills design that lets the wonders of nature speak for themselves.
Recommended Accessories;
- Precision adjustable Tube Rings
- 9” Dovetail Plate and Carry Handle facilitate easy transportation and fit seamlessly with most mounts.
- Focal Reducer Corrector converts the F/7 Ratio to F/6.2 with a 115mm back focus.
- TEC Transportation Case that eases transport between observation locations.
- TEC Compact Case for easy lifting and transportation.
- 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
Testing and Quality Assurance
TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and TEC then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach TEC's expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.
While the objectives are fine-tuned under interferometrical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.
Specifications
| Clear Aperture | 140mm |
| Focal Length | 1345mm |
| Focal Ratio | 9.6 |
| Resolution | 0.86 arc sec |
| Back Focus Distance | 250mm |
| Dew Shield Diameter | 176mm |
| Tube Diameter | 150mm |
| Working Tube Length | 1430mm |
| Transport Tube Length | 1120mm |
| Glass Weight | 1.1kg |
| Airspace Gap | 1.5mm |
| OTA Weight (Estimate) | 7.7kg |
$31,499.00
The 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.
The 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.
RASA 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.
Important freight requirement RASA 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
| OPTICAL TUBE INFO: | |
|---|---|
| Optical Design | Rowe-Ackermann Schmidt Astrograph |
| Aperture | 355.6mm (14") |
| Focal Length | 790mm (31.1") |
| Focal Ratio | f/2.2 |
| Central obstruction diameter | 158mm (6.22")(44% of aperture diameter) |
| Light Gathering Power (Compared to human eye) | 2581X |
| Resolution (Rayleigh) | 0.39 arc seconds |
| Resolution (Dawes) | 0.36 arc seconds |
| Image circle | 60.1mm (2.36") Ø, 4.4° |
| Useable field | 70mm (2.75") Ø, 5.1°, only minimal performance loss at edge of FOV |
| Wavelength range | 400 – 900 nm |
| Spot size | < 6.3 μm RMS across FOV |
| Optical coatings | Enhanced aluminum, XLT multi-coatings used throughout |
| Off-axis Illumination | 83% at 30mm (1.18") off-axis |
| Optical window | 104mm (4.09") Ø |
| Back focus with included camera adapter | 55mm (2.16") |
| Back focus from top of threaded collar | 77.5mm (3.05") |
| Optical Tube | Aluminum |
| Optical Tube Length | 1079.5mm (42.5") |
| Optical Tube Diameter | 406.4mm (16") |
| Focuser | New focuser design, minimizes focus shift |
| Finderscope | Not included |
| Optical Tube Weight | 75 lbs (34.02 kg) |
| Other features | Ventilation fan, dual dovetail mounting bars |
| Included items | 48mm (1.89") camera adapter, fan battery pack |
$24,990.00
An extension of the highly popular APO140FL, the APO160FL F/7 allows the observer to delve deeper into the beauty of space.
- The TEC APO160FL F/7 features an oil-spaced apochromatic-triplet objective with a Fluorite (CaF2) middle element, resulting in color correction that is optimized for visual use and imaging. This oil-spaced triplet design in combination with multi-layer coatings on all surfaces of the objective ensure maximal light transmission.
- The objective is housed in an aluminum cell, providing for excellent thermoregulation properties while remaining lightweight and strong.
- The optical assembly sits in a lightweight aluminum tube that utilizes anti-reflective coating and sharp-edged baffles throughout the interior and forget about collimation – after the scope leaves TEC, no adjustment is required.
- Further, the crisp all white assembly projects the elegant, handcrafted quality that TEC is known for. Expect deep contrast and rich, natural color out of this compact and timeless design.
-
Each APO160FL F/7 comes equipped with a Starlight Instruments FTF#3545 Feather Touch Focuser that was designed in collaboration with TEC. This is Starlight Instruments’ largest rotating focuser with coarse and fine focusing 9:1 Planetary Reduction Assembly.
- The APO160FL F/7 can be fitted with to other focuser models by request. Please contact TEC to confirm whether the desired focuser will fit with the desired TEC model.
- The 2” locking metal collet is insensitive to temperature fluctuations and holds loads with high precision and concentricity.
- It also comes equipped with a Focuser wheel for easy mount installation and direction.
- Available for purchase as a Binocular Telescope. This requires the purchase of 2 APO160FL F/7.
- Able to accommodate a wide variety of eyepieces and mounts.
In classic refractor fashion, the TEC APO160FL F/7 is a no compromise, no frills design that lets the wonders of nature speak for themselves.
Please know that ALL PRICES AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE
Recommended Accessories;
- Precision adjustable Tube Rings
- 12” Dovetail Plate and Carry Handle facilitate easy transportation and fit seamlessly with most mounts. The larger size fits effortlessly with our larger models.
- Focal Reducer Corrector converts the F/7 Ratio to F/6.2 with a 115mm back focus.
- 160mm Field Flattener with an 85mm back focus.
- 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
Testing and Quality Assurance
TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and TEC then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach TEC's expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.
While the objectives are fine-tuned under interferometrical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.
| Clear Aperture | 160 mm |
| Focal Length | 1120 mm |
| Focal Ratio | 7.0 |
| Resolution (Theoretical) | 0.75 arc sec |
| Dew Shield Diameter | 7.91″ / 201 mm |
| Tube Diameter | 6.38″ / 162 mm |
| Tube Length (Retracted) | 39″ / 991 mm |
| Tube Length (Dew Shield Extended) | 47″ 1194 mm |
| Length Incl. Focuser Fully Extended | +3.5″ / 114 mm |
| Length in Working Position with the Focuser in Middle of Focusing Range | 50.7″ / 1288 mm |
| Dist. From Focuser End to Focal Plane (Back Focus) | 7.48″ / 190 mm +-1 |
| Center of Gravity from the Middle of the Wheel and 2.5 lbs / 1 kg load | 15.6″ / 396 mm |
| Center of Gravity from the Middle of the Wheel (Telescope Retracted) | 16.4″ / 417 mm |
| Telescope Weight | 27 lb / 12.3 kg |
| Weight Incl. Rings, Plate, Handle | 31 lbs / 14 kg |
$126,999.00
Our largest refractor, the APO250VT F/8.8 allows the observer to immerse themselves in the beauty of space. This observatory class instrument provides the best visual experience that TEC has to offer.
- The APO250VT F/8.8 features an air-spaced apochromatic-triplet objective with a Fluorite (CaF2) middle element, resulting in color correction that is optimized for visual use and imaging. This air-spaced triplet design in combination with multi-layer coatings on all surfaces of the objective ensure maximal light transmission.
- The objective is housed in an titanium cell, providing for excellent thermoregulation properties while remaining lightweight and strong.
- The optical assembly sits in a lightweight aluminum tube that utilizes anti-reflective coating and sharp-edged baffles throughout the interior and forget about collimation – after the scope leaves TEC, no adjustment is required.
- Further, the crisp all white assembly projects the elegant, handcrafted quality that TEC is known for. Expect deep contrast and rich, natural color out of this compact and timeless design.
- Each APO250VT F/8.8 comes equipped with a Starlight Instruments FTF#3545 Feather Touch Focuser that was designed in collaboration with TEC. This is Starlight Instruments’ largest rotating focuser with coarse and fine focusing 9:1 Planetary Reduction Assembly.
- The 2” locking metal collet is insensitive to temperature fluctuations and holds loads with high precision and concentricity.
- Includes precision adjustable Tube Rings.
- Able to accommodate a wide variety of eyepieces.
- Recommended to be paired with a high capacity load mount and a stationary observation station.
In classic refractor fashion, the TEC APO250VT F/8.8 is a no compromise, no frills design that lets the wonders of nature speak for themselves. Please know that ALL PRICES AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE
Recommended Accessories
- Adjustable Dovetail Plate and Semirings.
- 10×60 Baader Vario Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
- 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
- Gutekunst Compact Atmospheric Dispersion Corrector (ADC)
Testing and Quality Assurance
TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and we then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach Yuri’s expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.
While the objectives are fine-tuned under interferomerical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.
| Clear aperture | 250mm (10″) |
| Focal length | 2200mm |
| Focal ratio | 8.8 |
| Resolution (theoretical) | 0.5″ |
| Tube diam. | 254mm |
| Tube length (retracted) | 2000mm |
| Tube length (extended) | 2500mm |
| Tube weight | 50 kg |
$31,599.00
Our largest portable refractor, the APO180FL F/7 allows the observer to delve deep into the beauty of space.
- The APO180FL F/7 features an oil-spaced apochromatic-triplet objective with a Fluorite (CaF2) middle element, resulting in color correction that is optimized for visual use and imaging. This oil-spaced triplet design in combination with multi-layer coatings on all surfaces of the objective ensure maximal light transmission.
- The objective is housed in an aluminum cell, providing for excellent thermoregulation properties while remaining lightweight and strong.
- The optical assembly sits in a lightweight aluminum tube that utilizes anti-reflective coating and sharp-edged baffles throughout the interior and forget about collimation – after the scope leaves TEC, no adjustment is required.
- Further, the crisp all white assembly projects the elegant, handcrafted quality that TEC is known for. Expect deep contrast and rich, natural color out of this compact and timeless design.
-
Each APO180FL F/7 comes equipped with a Starlight Instruments FTF#3545 Feather Touch Focuser that was designed in collaboration with TEC. This is Starlight Instruments’ largest rotating focuser with coarse and fine focusing 9:1 Planetary Reduction Assembly.
- The APO180FL F/7 can be fitted with to other focuser models by request. Please contact TEC to confirm whether the desired focuser will fit with the desired TEC model
- The 2” locking metal collet is insensitive to temperature fluctuations and holds loads with high precision and concentricity.
- It also comes equipped with a Focuser wheel for easy mount installation and direction.
- Available for purchase as a Binocular Telescope. This requires the purchase of 2 APO180FL F/7.
- Able to accommodate a wide variety of eyepieces and mounts.
In classic refractor fashion, the TEC APO180FL F/7 is a no compromise, no frills design that lets the wonders of nature speak for themselves. Please know that ALL PRICES AND AVAILABILITY ARE SUBJECT TO CHANGE.
Recommended Accessories;
- 12” Dovetail Plate and Carry Handle facilitate easy transportation and fit seamlessly with most mounts. The larger size fits effortlessly with our larger models.
- Precision adjustable Tube Rings.
- Focal Reducer Corrector converts the F/7 Ratio to F/6.2 with a 115mm back focus.
- 180mm Field Flattener prevents vignetting and ensures high quality imaging.
- 10×60 Baader Vario Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
- 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
- Gutekunst Compact Atmospheric Dispersion Corrector (ADC).
Testing and Quality Assurance
TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and we then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach Yuri’s expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.
While the objectives are fine-tuned under interferometrical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.
| Clear Aperture | 180 mm |
| Focal Length | 1260 mm |
| Focal Ratio | 7.0 |
| Resolution (Theoretical) | 0.66 arcsec |
| Dew Shield Diameter | 9.11″ / 231.5 mm |
| Tube Diameter | 7.56″ / 192 mm |
| Tube Length (Retracted) | 44.5″ / 1130 mm |
| Tube Length (Extended) | 53″ / 1346 mm |
| Focuser Tube Fully Extended | +3.5″ / 114 mm |
| Length in Working Position with the Focuser in Middle of Focusing Range | 56.1″ / 1425 mm |
| Dist. From Focuser End to Focal Plane (Back Focus) | 8.27″ / 210 mm +-1 |
| Center of Gravity from the Middle of the Wheel and 2.5 lbs / 1 kg load | 19.7″ / 500 mm |
| Center of Gravity from the Middle of the Wheel (Telescope Retracted) | 21.3″ / 540 mm |
| Tube weight | 36.5 lb / 16.5 kg |
| OTA Weight with Rings, Plate, Handle | 40 lbs / 18.2 kg |
$14,990.00
Owing homage to one of TEC’s earliest designs, the APO140ED, the APO140FL F/7debuted in 2017 and has quickly become TEC’s most popular model.
- The APO140FL F/7 features an oil-spaced apochromatic-triplet objective with a Fluorite (CaF2) middle element, resulting in color correction that is optimized for visual use and imaging. This oil-spaced triplet design in combination with multi-layer coatings on all surfaces of the objective ensure maximal light transmission.
- The objective is housed in an aluminum cell, providing for excellent thermoregulation properties while remaining lightweight and strong.
- The optical assembly sits in a lightweight aluminum tube that utilizes anti-reflective coating and sharp-edged baffles throughout the interior and forget about collimation – after the scope leaves TEC, no adjustment is required.
- Further, the crisp all white assembly projects the elegant, handcrafted quality that TEC is known for. Expect deep contrast and rich, natural color out of this compact and timeless design.
-
Each APO140FL F/7 comes equipped with a Starlight Instruments FTF#3545 Feather Touch Focuser that was designed in collaboration with TEC. This is Starlight Instruments’ largest rotating focuser with coarse and fine focusing 9:1 Planetary Reduction Assembly.
- The APO140FL F/7 can be fitted with to other focuser models by request. Please contact TEC to confirm whether the desired focuser will fit with the desired TEC model.
- The 2” locking metal collet is insensitive to temperature fluctuations and holds loads with high precision and concentricity.
- Able to accommodate a wide variety of eyepieces and mounts.
In classic refractor fashion, the TEC APO140FL F/7 is a no compromise, no frills design that lets the wonders of nature speak for themselves. ALL PRICES AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE
Recommended Accessories;
- Precision adjustable Tube Rings
- 9” Dovetail Plate and Carry Handle facilitate easy transportation and fit seamlessly with most mounts.
- Focal Reducer Corrector converts the F/7 Ratio to F/6.2 with a 115mm back focus.
- TEC Transportation Case that eases transport between observation locations.
- TEC Compact Case for easy lifting and transportation.
- 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
Testing and Quality Assurance
TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and TEC then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach TEC's expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.
While the objectives are fine-tuned under interferometrical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.
| Clear aperture | 140mm |
| Focal Length | 980mm |
| Focal Ratio | 7.0 |
| Resolution (Theoretical) | 0.8 arc sec |
| Dew Shield Diameter | 5.9″ / 176mm |
| Tube Diameter | 5.9″ / 150mm |
| Tube Length (Retracted) | 33″ / 840mm |
| Tube Length (Dew Shield Extended) | 40″ / 1050mm |
| Length Incl. Focuser Fully Extended | +3.5″ / 114mm |
| Length in Working Position with the Focuser in Middle of Focusing Range | 43″ / 1090mm |
| Dist. From Focuser End to Focal Plane (Back Focus) | 7.9″ / 200mm |
| Center of Gravity from the Middle of the Focusing Knob 2.5 lbs / 1 kg load | 14″ / 352mm |
| Center of Gravity from the Middle of the Focuser (Telescope Retracted) | 16″ / 406mm |
| Telescope weight | 18 lbs / 8.2kg |
| Weight Incl. Rings, Plate, Handle, Finder | 21 lbs / 9.5kg |
$114,599.00
RC20’s Key Features
Large Aperture and Ritchey-Chrétien Optics
The 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.
Mechanical Structure
Constructed 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.
Thermal Management
Equipped 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.
Application-Specific Benefits
Astrophotography
The 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.
Astronomy Research
With 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.
Optical Systems
| Aperture | 508 mm (20") |
| Focal Length | 3556 mm (140") |
| Focal Ratio | f/7 |
| Central Obstruction | 39% of the Primary Mirror Diameter |
| Back Focus from Racked in Focuser | 147 mm (5.8") |
| Weight | 63.5 kg (140 lbs) |
| OTA Length | 1194 mm (47") |
| Upper Cage | Carbon Fiber Truss |
| Lower Cage | Carbon Fiber Truss with Carbon Fiber Light Shroud |
Secondary Mirro
| Diameter | 191mm (7.5") |
| Material | Fused silica |
| Shape | Hyperbolic |
| Coating | Enhanced Aluminum – 96% |
Primary Mirror
| Optical Diameter | 508 mm (20") |
| Outer Diameter | 521 mm (20.5") |
| Shape | Hyperbolic |
| Material | Enhanced Aluminum – 96% |
| Coating | Fused Silica |
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror | |
| Wrench Set (5812A35) - Standard hex wrenches (European orders only) |
$139,599.00
Large Aperture and Optimized Focal Ratio
The 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.
Specialized Optical Design for Infrared
The 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.
Robust Mechanical Structure
Constructed 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.
Advanced Thermal Management
The 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.
Integrated Dew Control
Infrared 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.
Application-Specific Benefits
Infrared Astronomy: 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.
Advanced Research and LIDAR Applications: With its specialized design and infrared optimization, the IRDK24 is a robust platform for advanced scientific research, including LIDAR.
Optical Systems
| Aperture | 610 mm (24") |
| Focal Length | 3974 mm (156") |
| Focal Ratio | f/6.5 |
| Central Obstruction | 47% of the primary mirror diameter |
| Back Focus From Mounting Surface | 364.46 mm (14.349") |
| Weight | 240 lbs (108.9 kg) |
| OTA Length | 1422 mm (56") |
| Optical Design Performance | 2.4-micron RMS on-axis, 4.0-micron RMS at 26 mm off-axis, 4.8-micron at 35 mm off-axis |
| Upper Cage | Carbon fiber truss |
| Lower Cage | Carbon fiber truss with aluminum light shroud |
Primary Mirror
| Optical Diameter | 610 mm (24") |
| Outer Diameter | 622 mm (24.5") |
| Shape | Prolate Ellipsoid |
| Coating | Protected Gold |
Secondary Mirror
| Diameter | 280 mm (11") |
| Material | Fused silica (quartz) |
| Shape | Spherical |
| Coating | Protected Gold |
| Included Items | CDK24 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″. |
| Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately | |
| Primary Mirror Cover - To protect the primary mirror | |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror |
$78,399.00
IRDK20’s Key Features
Large Aperture and Optimized Focal Ratio
The 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.
Specialized Optical Design for Infrared
The 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.
Robust Mechanical Structure
Constructed 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.
Advanced Thermal Management
The 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.
Integrated Dew Control
Infrared 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.
Application-Specific Benefits
Infrared Astronomy
The 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.
Advanced Research and LIDAR Applications
With its specialized design and infrared optimization, the IRDK20 is a robust platform for advanced scientific research, including LIDAR applications.
Optical Systems
| Aperture | 508 mm (20") |
| Focal Length | 3454mm (136") |
| Focal Ratio | f/6.8 |
| Central Obstruction | 39% of the Primary Mirror Diameter |
| Back Focus From Mounting Surface | 8.81 in (224 mm) |
| Weight | 63.5kg (140 lbs) |
| OTA Length | 1194mm (47") |
| Upper Cage | Carbon Fiber Truss |
| Lower Cage | Carbon Fiber Truss and light shroud |
Secondary Mirror
| Diameter | 191mm (7.5") |
| Material | Fused Silica (Quartz) |
| Shape | Spherical |
| Coating | Protected Gold |
Primary Mirror
| Optical Diameter | 508mm (20") |
| Outer Diameter | 521mm (20.5") |
| Shape | Prolate Ellipsoid |
| Material | Fused Silica (quartz) |
| Coating | Protected Gold |
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror |
$54,699.00
IRDK17’s Key Features
Large Aperture and Optimized Focal Ratio
The 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.
Specialized Optical Design for Infrared
The 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.
Robust Mechanical Structure
Constructed 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.
Advanced Thermal Management
The 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.
Integrated Dew Control
Given 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.
Application-Specific Benefits
Infrared Astronomy
The 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.
Advanced Research and LIDAR Applications
With 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.
Optical Systems
| Aperture | 432mm (17 in) |
| Focal Length | 2939 |
| Focal Ratio | f/6,8 |
| Central Obstruction | 23.7% by surface area; 48.6% of the primary mirror diameter |
| Back Focus From Mounting Surface | 262.33mm (10.32 in) |
| Back Focus From Racked In Focuser | 184mm (7.24 in) |
| Weight | 48kg (106 lbs) |
| OTA Length | 1067mm (42 in) |
| Upper Cage | Carbon Fiber Truss |
| Lower Cage | Carbon Fiber Truss and light shroud |
Secondary Mirror
| Diameter | 165mm (6.5 in) |
| Material | Fused Silica (Quartz) |
| Shape | Spherical |
| Coating | Protected Gold |
Primary Mirror
| Optical Diameter | 432 mm (17 in) |
| Outer Diameter | 445 mm (17.5 in) |
| Shape | Prolate Ellipsoid |
| Material | Fused Silica (quartz) |
| Coating | Protected Gold |
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror |
$39,000.00
The 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.
IRDK14’s Key Features
Large Aperture and Optimized Focal Ratio
The 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.
Specialized Optical Design for Infrared
The 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.
Robust Mechanical Structure
Constructed 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.
Advanced Thermal Management
The 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.
Integrated Dew Control
Infrared 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.
Application-Specific Benefits
Infrared Astronomy
The 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.
Advanced Research and LIDAR Applications
With its specialized design and infrared optimization, the IRDK14 is a robust platform for advanced scientific research, including LIDAR and other remote sensing applications.
Key Features Overview
The IRDK14 comes with impressive specifications tailored for infrared optimization:
- Gold-coated mirrors optimized for high reflectivity in infrared wavelengths (ultraviolet optimization available)
- 14-inch (356 mm) aperture
- 2563 mm focal length
- f/7.2 focal ratio
- 282mm back focus from mounting surface
- 70mm image circle
- Rock-solid fused silica mirrors with low thermal expansion
- Lightweight and rigid carbon fiber optical tube assembly
Optical Systems
| Aperture | 356mm (14 in) |
| Focal Length | 2563mm (101 in) |
| Focal Ratio | F/7.2 |
| Central Obstruction | 23.5% by Surface Area: 48.5% by Diameter |
| Back Focus From Mounting Surface | 282mm (11.09 in) |
| Weight | 22kg (48lbs) |
| OTA Length | 889mm (35 in) |
| Upper Cage | Carbon Fiber Truss |
| Lower Cage | Carbon Fiber Truss And Light Shroud |
Secondary Mirror
| Diameter | 165mm (6.5 in) |
| Material | Fused Silica (Quartz) |
| Shape | Spherical |
| Coating | Protected Gold |
Primary Mirror
| Optical Diameter | 355.6mm (14 in) |
| Outer Diameter | 468.3mm (14.5 in) |
| Shape | Prolated Ellipsoid |
| Material | Fused Silica (Quartz) |
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror | |
| Wrench Set (5812A35) - Standard hex wrenches (European orders only) |
$29,799.00
IRDK12.5’s Key Features
Large Aperture and Optimized Focal Ratio
The 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.
Specialized Optical Design for Infrared
The 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.
Robust Mechanical Structure
Constructed 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.
Advanced Thermal Management
Equipped 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.
Integrated Dew Control
The 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.
Application-Specific Benefits
Infrared Astronomy
The 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.
Advanced Research and LIDAR Applications
With its specialized design and infrared optimization, the IRDK14 is a robust platform for advanced scientific research, including LIDAR and other remote sensing applications.
Optical Systems
| Aperture | 318mm (12.5 in) |
| Focal Length | 2541 (100 in) |
| Focal Ratio | f/8 |
| Central Obstruction | 42% of the primary mirror diameter |
| Back Focus From Mounting Surface | 265mm (10.4 in) |
| Weight | 19kg (42 lbs |
| OTA Length | 787mm (31 in) |
| Upper Cage | Carbon Fiber Truss |
Secondary Mirror
| Diameter | 118mm (4.65 in) |
| Material | Fused Silica (Quartz) |
| Shape | Spherical |
| Coating | Protected Gold |
Primary Mirror
| Optical Diameter | 318mm (12.5 in) |
| Outer Diameter | 330mm (13 in) |
| Shape | Prolated Ellipsoid |
| Material | Fused Silica (Quartz) |
| Coating | Protected Gold |
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flash drive - Contains software and instructions for collimation and spacing the primary to secondary mirror | |
| Wrench Set (5812A35) - Standard hex wrenches (European orders only) | |
| Cable 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) |
$63,800.00
The 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.
DeltaRho 350 Telescope System’s Key Features
Large Aperture and Fast Focal Ratio
The 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.
Advanced Optical Design
Featuring 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.
Mechanical Structure
Constructed 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.
High-Performance Coatings
Equipped 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.
Collimation Software
The 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.
Dew Control
Integrated 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.
Application-Specific Benefits
Astrophotography
The DeltaRho 350’s fast exposures and expansive field view allow astrophotographers to capture breathtaking night sky images with exceptional detail and clarity.
Astronomy Research
With its robust build and advanced optics, the DeltaRho 350 is an excellent tool for universities and research institutions engaged in long-term astronomical studies.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
The 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.
Mount Systems
| Mount Weight | 110 lbs (50 kg) |
| Max. Load Capacity | 100 lbs (45 kg) |
| Latitude Range | 0 to 90 degrees, Northern and Southern hemispheres |
| Cable Management | Equipment cables can be wired through mount |
Control systems
| Control Electronics | PlaneWave Interface dual axis telescope control |
| User Interface | PlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software |
| Homing Sensors | Home position sensors are included allowing the mount can find its home position on power up. |
| Slew Rate | 20 degrees per second (standard); 50 degrees per second (maximum), both axes |
| Power Requirement | Accepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter. |
Optical Systems
| Aperture | 350 mm |
| Focal Length | 1050 mm (41.34 in.) |
| Focal Ratio | f/3 |
| Central Obstruction | 56 % by diameter |
| Backfocus from Mounting Surface | 5.6 in. (142.24 mm). This distance includes refraction from filters. |
| Weight | 46 lbs (21 kg) |
Motion control
| Motor – Azimuth and Altitude | Direct Drive 3 Phase Axial-Flux Torque Motors |
| Encoder – Azimuth and Altitude | 152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution). |
| Motor Torque | Approximately 20 ft-lbs continuous; 50 ft-lbs peak |
| Drive Electronics | Industrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card |
| Telescope Control Software | Uses PWI4. Incorporates PointXP mount modeling software by Dave Rowe. All ASCOM compatible. |
System Performance
| Pointing Accuracy | <10 arcsecond RMS with PointXP Model |
| Pointing Precision | 2 arcseconds at sidereal velocity |
| Tracking Accuracy | 0.3 arcseconds over a 5-minute period at sidereal velocity |
| System Natural Frequency | 10 Hz or greater |
Included items
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror |
$111,570.00
The 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.
Key Features of the CDK500 Observatory System
CDK20 Optical Tube Assembly
- Advanced Optical Design: 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.
- High-Quality Construction: Constructed with robust carbon fiber, reducing thermal expansion and enabling quick thermal equilibration, which helps maintain precise optical alignment under fluctuating temperatures.
- Superior Mirrors and Coatings: 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.
- Thermal Management: 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.
CDK20 f/6.8 OTA
- Aperture and Focal Length: 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.
CDK20 f/7.7 OTA
- Aperture 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.
L-500 Direct Drive Mount
- Direct Drive Motors: 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.
- High-Resolution Encoders: Outfitted with high-resolution optical encoders on both axes, offering precise positioning and movement, which is crucial for elite astrophotography and detailed astronomical studies.
- Azimuth 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, essential for prolonged accurate tracking and reducing stress on the mount during extended observations.
- Rapid Target Acquisition: 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.
Application-Specific Advantages
Astrophotography
The 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.
Astronomy Research
Researchers 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.
Visual Observations
For 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.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
With 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.
Mount systems
| Mount Weight | 257 lbs (100 kg) |
| Max. Load Capacity | 200 lbs (91 kg) |
| Latitude Range | 0 to 90 degrees, Northern and Southern hemispheres |
| Cable Management | Equipment cables can be wired through mount |
Control systems
| Control Electronics | PlaneWave Interface dual axis telescope control |
| User Interface | PlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software |
| Homing Sensors | Home position sensors are included allowing the mount can find its home position on power up. |
| Slew Rate | 20 degrees per second (standard); 50 degrees per second (maximum), both axes |
| Power Requirement | Accepts 120 VAC. Supplied with 12VDC 15A Regulated Power Adapter |
Optical systems
| Aperture | 508 mm (20") |
| Focal Length | 3454 mm (135.98") or 3947 mm (155.4") |
| Focal Ratio | f/6.8 or f/7.77 |
| Central Obstruction | 39% of the Primary Mirror Diameter |
| Back Focus | f/6.8 - 223 mm (8.81 in), f/7.77 - 269.24 mm (10.6") |
Mechanical structure
| Fork Assembly | L-500 Mount |
| Fork Base | Welded stainless steel torsion box |
| Optical Tube | Carbon Fiber Truss with Carbon Fiber Light Shroud |
| Instrument Payload | 200 lbs (91 kg) |
Motion control
| Motor – Azimuth and Altitude | Direct Drive 3 Phase Axial-Flux Torque Motors |
| Encoder – Azimuth and Altitude | 152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution). |
| Motor Torque | Approximately 20 ft-lbs continuous; 50 ft-lbs peak |
| Drive Electronics | Industrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card |
| Telescope Control Software | PlaneWave 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. |
System Performance
| Pointing Accuracy | <10 arcsecond RMS with PointXP Model |
| Pointing Precision | 2 arcseconds at sidereal velocity |
| Tracking Accuracy | 0.3 arcseconds over a 5-minute period at sidereal velocity |
| System Natural Frequency | 11 Hz or greater |
Induced items
| Included Items | Dovetail Saddle (200919) - The PW wide saddle comes standard with the L-500 mount. |
| Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately | |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flashdrive - Contains PWI4 software for mount control , instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror | |
| Hardware - 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 | |
| One 16′ USB cable - To connect the mount to the observatory control computer | |
| One 120VAC power cable - To provide power to the mount | |
| Standard Allen Key set - For tightening bolts used on the mount | |
| Gamepad - Used for control of the mount tracking speeds for visual observing |
$99,310.00
The 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.
Key Features of the CDK450 Observatory System
CDK17 Optical Tube Assembly
- Advanced Optical Design: 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.
- High-Quality Construction: Constructed with robust carbon fiber, reducing thermal expansion and enabling quick thermal equilibration, which helps maintain precise optical alignment under fluctuating temperatures.
- Superior Mirrors and Coatings: 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.
- Thermal Management: 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.
CDK17 f/6.8 OTA
- Aperture and Focal Length: 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.
L-550 Direct Drive Mount
- Direct Drive Motors: 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.
- High-Resolution Encoders: Outfitted with high-resolution optical encoders on both axes, offering precise positioning and movement, which is crucial for elite astrophotography and detailed astronomical studies.
- Azimuth 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, essential for prolonged accurate tracking and reducing stress on the mount during extended observations.
- Rapid Target Acquisition: 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.
Application-Specific Advantages
Astrophotography
The 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.
Astronomy Research
Researchers 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.
Visual Observations
For 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.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
With 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.
Mount system
| Mount Weight | 338 lbs (153 kg) |
| Max. Load Capacity | 300 lbs (136 kg) |
| Latitude Range | 0 to 90 degrees, Northern and Southern hemispheres |
| Cable Management | Equipment cables can be wired through mount |
Control system
| Control Electronics | PlaneWave Interface dual axis telescope control |
| User Interface | PlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software |
| Homing Sensors | Home position sensors are included allowing the mount can find its home position on power up. |
| Slew Rate | 20 degrees per second (standard); 50 degrees per second (maximum), both axes |
| Power Requirement | Accepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter. |
Optical systems
| Aperture | 17 inch (432 mm) |
| Focal Length | 2939 mm (115.71 inch) |
| Focal Ratio | f/6.8 |
| Central Obstruction | 23.7% by surface area; 48.6% of the primary mirror diameter |
| Backfocus from Mounting Surface | 10.32 inch (262.33 mm) |
| Backfocus from Racked in Focuser | 7.24 inch (184 mm) |
| Weight | 106 lbs (48 kg) |
| Optimal Field of View | 70mm image circle |
Motion control
| Motor – Azimuth and Altitude | Direct Drive 3 Phase Axial-Flux Torque Motors |
| Encoder – Azimuth and Altitude | 152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution). |
| Motor Torque | Approximately 20 ft-lbs continuous; 50 ft-lbs peak |
| Drive Electronics | Industrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card |
| Telescope Control Software | Uses PWI4. Incorporates PointXP mount modeling software by Dave Rowe. All ASCOM compatible. |
System Performance
| Pointing Accuracy | <10 arcsecond RMS with PointXP Model |
| Pointing Precision | 2 arcseconds at sidereal velocity |
| Tracking Accuracy | 0.3 arcseconds over a 5-minute period at sidereal velocity |
| System Natural Frequency | 10 Hz or greater |
Included Items
| Included Items | Heating elements for dew prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flash drive - Contains PWI4 software for mount control , instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror | |
| Hardware - 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 | |
| One 16′ USB cable - To connect the mount to the observatory control computer | |
| One 120VAC power cable - To provide power to the mount | |
| Standard Allen Key set - For tightening bolts used on the mount | |
| Gamepad - Used for control of the mount tracking speeds for visual observing | |
| Dovetail Saddle (200919) - The PW wide saddle comes standard with the L-550 mount |
$85,980.00
The 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.
Key Features of the CDK400 Observatory System
CDK17 Optical Tube Assembly
- Aperture and Focal Length: 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.
- Advanced Optical Design: 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.
- High-Quality Construction: 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.
- Superior Mirrors and Coatings: 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.
- Thermal Management: 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.
L-500 Direct Drive Mount
- Direct Drive Motors: 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.
- High-Resolution Encoders: Outfitted with high-resolution optical encoders on both axes, providing exacting positioning and movement, crucial for top-tier astrophotography and detailed astronomical studies.
- Azimuth Dovetail Balance System: 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.
- Rapid Target Acquisition: 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.
Application-Specific Advantages
Astrophotography
The 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.
Astronomy Research
Researchers 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.
Visual Observations
For 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.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
With 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 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.
Mount System
| Mount Weight | 338 lbs (153 kg) |
| Max. Load Capacity | 300 lbs (136 kg) |
| Latitude Range | 0 to 90 degrees, Northern and Southern hemispheres |
| Cable Management | Equipment cables can be wired through mount |
Control System
| Control Electronics | PlaneWave Interface dual axis telescope control |
| User Interface | PlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software |
| Homing Sensors | Home position sensors are included allowing the mount can find its home position on power up. |
| Slew Rate | 20 degrees per second (standard); 50 degrees per second (maximum), both axes |
| Power Requirement | Accepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter. |
Optical Systems
| Aperture | 17 inch (432 mm) |
| Focal Length | 2939 mm (115.71 inch) |
| Focal Ratio | f/6.8 |
| Central Obstruction | 23.7% by surface area; 48.6% of the primary mirror diameter |
| Backfocus from Mounting Surface | 10.32 inch (262.33 mm) |
| Backfocus from Racked in Focuser | 7.24 inch (184 mm) |
| Weight | 106 lbs (48 kg) |
| Optimal Field of View | 70mm image circle |
Mechanical Structure
| Fork Assembly | L-500 Mount |
| Fork Base | Welded stainless steel torsion box |
| Optical Tube | Carbon Fiber Truss with Carbon Fiber Light Shroud |
| Instrument Payload | 201 lbs (91 kg) |
Motion control
| Motor – Azimuth and Altitude | Direct Drive 3 Phase Axial-Flux Torque Motors |
| Encoder – Azimuth and Altitude | 152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution). |
| Motor Torque | Approximately 20 ft-lbs continuous; 50 ft-lbs peak |
| Drive Electronics | Industrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card |
| Telescope Control Software | Uses PWI4. Incorporates PointXP mount modeling software by Dave Rowe. |
System Performance
| Pointing Accuracy | <10 arcsecond RMS with PointXP Model |
| Pointing Precision | 2 arcseconds at sidereal velocity |
| Tracking Accuracy | 0.3 arcseconds over a 5-minute period at sidereal velocity |
| System Natural Frequency | 10 Hz or greater |
Included items
| Included Items | Heating elements for dew prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flash drive - Contains PWI4 software for mount control , instructions for installation, software, and instructions for collimation and spacing the primary to secondary mirror | |
| Hardware - 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 | |
| One 16′ USB cable - To connect the mount to the observatory control computer | |
| One 120VAC power cable - To provide power to the mount | |
| Standard Allen Key set - For tightening bolts used on the mount | |
| Gamepad - Used for control of the mount tracking speeds for visual observing | |
| Dovetail Saddle (200919) - The PW wide saddle comes standard with the L-500 mount |
$127,499.00
CDK24’s Key Features
Large Aperture and Moderate Focal Ratio
The 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.
Advanced Optical Design
Equipped 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.
Robust Mechanical Structure
Constructed 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.
High-Performance Mirrors and Coatings
Utilizing 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.
Thermal Management
The 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.
Integrated Dew Control
The 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.
Application-Specific Benefits
Astrophotography
With 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.
Astronomy Research
The 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.
Visual Observations
The 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.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
The 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.
Optical Systems
| Aperture | 610 mm (24") |
| Focal Length | 3974 mm (156") |
| Focal Ratio | f/6.5 |
| Central Obstruction | 47% of the primary mirror diameter |
| Back Focus From Mounting Surface | 364.46 mm (14.349") |
| Weight | 240 lbs (108.9 kg) |
| OTA Length | 1422 mm (56") |
| Optical Design Performance | 2.4-micron RMS on-axis, 4.0-micron RMS at 26 mm off-axis, 4.8-micron at 35 mm off-axis |
| Upper Cage | Carbon fiber truss |
| Lower Cage | Carbon fiber truss with aluminum light shroud |
| Image Circle Size | 70mm |
Secondary Mirror
| Diameter | 280 mm (11") |
| Material | Fused silica (quartz) |
| Shape | Spherical |
| Coating | Enhanced Aluminum - 96% |
Lens Group
| Diameter | 135 mm (5.31") |
| Coating | Broadband AR Coatings (less than .5% reflected from 400 to 700 nm) |
Primary Mirror
| Optical Diameter | 610 mm (24") |
| Outer Diameter | 622 mm (24.5") |
| Shape | Prolate Ellipsoid |
| Coating | Enhanced aluminum – 96% |
$67,999.00
Capturing 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!
Carbon Fiber Truss Design
Minimizes 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.
3D Printed Baffles
PlaneWave 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.
Dovetail Expansion Joint
Allows 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.
Delta-T Ready
For 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.
Cooling Fans
Three 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.
Planewave CDK20 f/7.7 OTA Specifications
Optical System
| Aperture | 20 inch (508 mm) |
| Focal Length | 3951 mm (155.55 inch) |
| Focal ratio | f/7.77 |
| Central Obstruction | 39% of the Primary Mirror Diameter |
| Back Focus from mounting surface | 10.61 inch (269.49 mm) |
| Weight | 140 lbs (63.5 kg) |
| OTA Length | 47 inch (1,194 mm) |
| Upper Cage | Carbon fiber truss |
| Lower Cage | Carbon fiber truss with carbon fiber light shroud |
| Optimal Field of View | 52mm image circle |
Secondary Mirror
| Diameter | 7.5 inch (191mm) |
| Material | Fused silica (quartz) |
| Shape | Spherical |
| Coating | Enhanced Aluminum – 96% |
Primary Mirror
| Optical Diameter | 20 inch (508 mm) |
| Outer Diameter | 20.5 inch (521 mm) |
| Shape | Prolate ellipsoid |
| Material | Fused silica (quartz) |
Lens Group
| Diameter | 90 mm (3.54 inch) |
| Number of lenses | 2 |
| Coating | Broadband AR Coatings (less than .5% reflected from 400 to 700nm) |
| Optical Diameter | 20 inch (508 mm) |
Standard Features
| Carbon Fiber Truss Design | Minimizes thermal expansion which causes focus shift with changes in temperature |
| Dovetail Expansion Joint | Allows 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 |
| Cooling Fans | Three 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. |
Shipping
| Crated Shipping Weight | 291 lbs (132.0 kg) |
| Crate Width | 33 inch (838 mm) |
| Crate Height | 33 inch (838 mm) |
| Crate Length | 65 inch (1,651 mm) |
Included Items
| Heating elements for dew prevention | The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover | To protect the primary mirror and inside of the optical tube |
| Flashdrive | Contains software and instructions for collimation and spacing the primary to secondary mirror |
| Wrench Set (5812A35) | Standard hex wrenches (European orders only) |
Included Accessories
| Primary Mirror Cover | To protect the primary mirror |
| PlaneWave Thumb Drive | Contains software and instructions for collimation and spacing the primary to secondary mirror |
| 12VDC Power Supply | Provides power for the fans (Not included for European Orders) |
| Wrench Set | Standard hex wrenches (European orders only) |
| (5812A35) |
Recommend Accessories
OTA Accessories
- Reducer .66x CDK20 (200166)
- Delta T Heater Part (600195)
- Hendrick Focuser (200340)
- IRF90 – Integrated Rotating Focuser (600180)
- EFA kit Electronic Focuser (EFA)
- Light Shroud CDK20 (200970)
- Dovetail Clamp CDK20 (200919)
Visual Accessories
- Mounting Bracket for Finderscopes (125360)
- Finderscope and Mounting Bracket (6009003)
- Visual Adapter – CDK20 (200399)
- 2 Inch Mirror Diagonal (D1029ED)
Mount Accessories
- Piggyback Dovetail Bars (200990)
- L-500 Direct Drive Mount (600550)
$47,299.00
CDK17’s Key Features
Large Aperture and Moderate Focal Ratio
The 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.
Advanced Optical Design
Equipped 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.
Robust Mechanical Structure
Constructed 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.
High-Performance Mirrors and Coatings
Using 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.
Thermal Management
The 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.
Integrated Dew Control
The 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.
Application-Specific Benefits
Astrophotography
With 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.
Astronomy Research
The 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.
Visual Observations
The 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.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
The 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.
Optical Systems
| Aperture | 432mm (17 in) |
| Focal Length | 2939 |
| Focal Ratio | f/6,8 |
| Central Obstruction | 23.7% by surface area; 48.6% of the primary mirror diameter |
| Back Focus From Mounting Surface | 262.33mm (10.32 in) |
| Back Focus From Racked In Focuser | 184mm (7.24 in) |
| Weight | 48kg (106 lbs) |
| OTA Length | 1067mm (42 in) |
| Optical Design Performance | 6.5 micron rms at 21mm and 9.6 micron at 26mm off-axis |
| Upper Cage | Carbon Fiber Truss |
| Lower Cage | Carbon Fiber Truss and light shroud |
| Image Circle Size | 70mm |
Secondary Mirror
| Diameter | 165mm (6.5 in) |
| Material | Fused Silica (Quartz) |
| Shape | Spherical |
Lens Group
| Diameter | 105mm (4.13 in) |
| Coating | Broadband AR Coatings (less than .5% reflected from 400 to 700nm) |
Primary Mirror
| Optical Diameter | 432 mm (17 in) |
| Outer Diameter | 445 mm (17.5 in) |
| Shape | Prolate Ellipsoid |
| Material | Fused Silica (quartz) |
| Coating | Enhanced aluminum – 96% |
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror |
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