{"title":"Imaging Filters","description":"","products":[{"product_id":"zwo-ir-cut-filter-1-25","title":"ZWO IR Cut  Filter 1.25","description":"\u003ch3\u003eZWO 1.25″ IR UV CUT filter is suitable for colour camera with AR protect window.\u003c\/h3\u003e\n\u003cp\u003eThe ZWO IR Cut Filter 1.25 blocks infrared light from reaching the sensor of your CCD or CMOS camera or your expensive H-alpha filter. When imaging, the addition of this simple and inexpensive accessory will result in sharper images, and when doing solar work, the IR Cut Filter will your protect H-alpha filter from the damaging effects of infrared radiation.\u003c\/p\u003e\n\u003cp\u003eInfrared or IR light is invisible to the human eye, and so even though most telescopes are not designed to focus IR light, it does not matter when you are using your telescope visually. However, when you add a camera to the mix, its a whole other story! Unlike the human eye, a silicon sensor is very sensitive to light in the infrared portion of the spectrum, and that is a problem because infrared images are blurry as all get out. That means your nice, sharp visual light image is degraded by the addition of the infrared layer. This problem can easily be solved by blocking the infrared, and the ZWO IR Cu filter 1.25 will do just that.\u003c\/p\u003e\n\u003cp\u003eThe ZWO IR Cut filter is housed in a 1.25” cell, and has internal threads so that you can stack filters together. The filter comes with a protective plastic case.\u003cimg class=\"size-full wp-image-37361 alignleft\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ZWOIR-Window-graph1.jpg\" alt=\"\" width=\"464\" height=\"263\"\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42045235429445,"sku":"ZWO-IRCUT125","price":39.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ir-cut-filter-125-960704.jpg?v=1731541428"},{"product_id":"astronomik-l-rgb-filterset-1-25in-e285-type-2c","title":"Astronomik L-RGB Filterset 1.25in (E28,5) Type 2c","description":"\u003cp\u003eThe transmission properties of the L-RGB  Filterset 1.25in Type 2c filters are optimized for CCD astrophotography. The set allows taking images in correct colours for all types of objects. Where other brands make strange compromises, we do the best colour reproduction possible. Both stars as well as objects that emit only in spectral lines, are reproduced in their true colors. You get CCD images with perfect colours, as if the objects where bright enough to be seen with photopic vision. This feature is the main difference between Astronomik filters an those of other manufacturers.\u003c\/p\u003e\n\u003cp\u003eThe following aspects have been most important for the design of our filters:\u003c\/p\u003e\n\u003cp\u003e- simple image processing for the user\u003c\/p\u003e\n\u003cp\u003e- highest transmission (nearly 100%) for short exposure times\u003c\/p\u003e\n\u003cp\u003e- adjusted transmissions of the individual filters for optimal colour reproduction\u003c\/p\u003e\n\u003cp\u003e- the use of industry standards\u003c\/p\u003e\n\u003cp\u003eAstronomik doesn't stop thinking at the step of taking the picture. More important a tool should be given to the astrophotographers that offers a simple and elegant editing process. To maintain the colour, we calculated our filterset for the sRGB color space, that is used as an industry standard from most manufacturers of monitors, printers and imaging software. As a user, you do not need to spend time learning about colourimetry and colour spaces. We have solved the special problems of astrophotography for you.\u003c\/p\u003e\n\u003cp\u003eDue to the high-precision machining of the carrier substrate, our filters are parfocal with wedge errors below all usual margins. In order not to be the bottleneck in a high-quality optical system Astronomik filters are of course diffraction limited. Issues concerning focal distances as well as the exact location of the images of each colour image are not a problem at all!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain use\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe L-RGB filter set divides the spectrum into its components red, green, blue and luminance. Thus colour separation can be achieved with pure b\/w CCD sensors. The separation corresponds to the colour sensitivity of the human eye according to DIN 5032. By using the sRGB color space it is possible to maintain the color of the image throughout the entire image processing and output. With an Astronomik L-RGB filter set and your camera you create ideal raw material for image processing in the sRGB color space.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSKU: 8h0039\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42045259219013,"sku":"8h0039","price":450.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik-l-rgb-filterset-125in-e285-type-2c-484889.jpg?v=1731540423"},{"product_id":"atik-lrgb-36mm-filter-set","title":"Atik LRGB 36mm Filter Set","description":"\u003cp\u003eThe ATIK LRGB 36mm set consists of Luminance, Red, Green and blue filters, that have been designed for CCD cameras to image deep sky objects, galaxies and stars in their natural colour. Take advantage of our special offer.\u003cstrong\u003e Get 50% off any filter set (or both filter sets), when you buy any Atik mono camera \u003c\/strong\u003e(with the exception of the Atik GP).\u003c\/p\u003e\n\u003cp\u003eIf a natural colour representation is what you want from you deep-sky imaging, an LRGB filter set should be your first choice. With OIII emission overlapping on the blue and green filters to allow high efficiency and natural colour imaging of all deep-sky objects. The gap between green and red filters serves to block out the light pollution line at 589nm and improves the colour of your images.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATIK LRGB 36mm Set Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTransmission: Average 95%\u003cbr\u003e\nSize: 36mm\u003cbr\u003e\nCoating Wavelength: 300-1050nm\u003cbr\u003e\nTransmitted Wavefront RMS: λ\/4\u003cbr\u003e\nParallelism (arcsec): 30s\u003c\/p\u003e\n\u003ctable class=\" alignleft\" style=\"height: 124px;\" border=\"0\" width=\"728\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission in Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission out of band\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLuminance\u003c\/td\u003e\n\u003ctd\u003e410-680nm\u003c\/td\u003e\n\u003ctd\u003eAverage \u0026gt;95%, Minimum \u0026gt;90%\u003c\/td\u003e\n\u003ctd\u003eMaximum \u0026lt;1% Average \u0026lt;0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003ctd\u003e600-680nm\u003c\/td\u003e\n\u003ctd\u003eAverage \u0026gt;95%, Minimum \u0026gt;90%\u003c\/td\u003e\n\u003ctd\u003eMaximum \u0026lt;1% Average \u0026lt;0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003ctd\u003e500-550nm\u003c\/td\u003e\n\u003ctd\u003eAverage \u0026gt;95%, Minimum \u0026gt;90%\u003c\/td\u003e\n\u003ctd\u003eMaximum \u0026lt;1% Average \u0026lt;0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003ctd\u003e410-500nm\u003c\/td\u003e\n\u003ctd\u003eAverage \u0026gt;95%, Minimum \u0026gt;90%\u003c\/td\u003e\n\u003ctd\u003eMaximum \u0026lt;1% Average \u0026lt;0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSKU: ATK0163\u003c\/p\u003e","brand":"Atik","offers":[{"title":"Default Title","offer_id":42045266985029,"sku":"ATK0163","price":549.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/atik-lrgb-36mm-filter-set-252549.jpg?v=1731540426"},{"product_id":"antlia-sho-3nm-pro-filters-1-25-inch","title":"Antlia SHO 3nm Pro filters","description":"\u003cp\u003e\u003cspan class=\"public-DraftStyleDefault-block public-DraftStyleDefault-ltr\" data-offset-key=\"ee01q-0-0\"\u003e\u003cspan data-offset-key=\"ee01q-0-0\"\u003eThe Antlia 3nm Pro Ultra Narrowband filter set includes the following items:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-offset-key=\"ee01q-0-0\"\u003eAntlia H-Alpha 3nm filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-offset-key=\"ee01q-0-0\"\u003eAntlia OIII 3nm filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-offset-key=\"ee01q-0-0\"\u003eAntlia SII 3nm filter\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAntlia SHO Pro narrowband filter optimizes the FWHM (full width half maximum) to 3nm bandpass. As the bandwidth becomes narrower, the 3nm Pro narrowband filters enhance contrast of emission targets by lowering the unwanted background signal. Antlia SHO 3nm Pro filter is designed to deliver 88% transmission at the 671.6nm line which provides you with the maximum signal and well defined nebulae structures.\u003c\/p\u003e\n\u003cp\u003eConventional broader narrowband filters cause a heavy loss in transmission due to the strong (Center Wavelength (CWL)-shift. We guarantee T\u0026gt;88% within 1nm range of the center bandwidth,which means that the 3nm Pro narrowband filter can guarantee high transmittance for working with both long focal ratios and fast optical systems. Blue-shift data show that Antlia 3nm Pro filters can be used with nearly all systems as fast as f\/3 with minimal loss in emission signal and meets the requirements of fast optics like Hyperstar and RASA.\u003c\/p\u003e\n\u003cp\u003eThe out of band blocking specification is rated OD5 (0.001%) which delivers an excellent SNR(signal to noise ratio) and effective cut-off rate to minimize interference from other wavelengths. Improved sharp cut-off astrophotography 3nm Pro filters are designed to minimize halos around bright stars.\u003c\/p\u003e\n\u003ch6\u003eApplication and Performance:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eHigh transmittance and smallest bandwidth to maximize contrast\u003c\/li\u003e\n\u003cli\u003eSteep spectral profile minimizes halos around bright stars\u003c\/li\u003e\n\u003cli\u003eA single substrate to eliminate internal reflections\u003c\/li\u003e\n\u003cli\u003eNarrowband Objects: Emission Nebulae, Planetary, Wolf Rayet Nebulae and Supernova Remnants\u003c\/li\u003e\n\u003cli\u003eUse in light polluted areas and dark sites\u003c\/li\u003e\n\u003cli\u003eExtends imaging time when the moon is up\u003c\/li\u003e\n\u003cli\u003eAntlia narrowband Pro filters can be used down to F\/3 systems with slight loss of signal\u003c\/li\u003e\n\u003cli\u003eAll Antlia Narrowband filters are edge blackened to eliminate internal reflections from stray light\u003c\/li\u003e\n\u003cli\u003eSuperior optical reliability reduces post image processing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"QHY","offers":[{"title":"1.25 inch Mounted","offer_id":42506984095813,"sku":"040034","price":1310.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch Mounted","offer_id":42506984194117,"sku":"040037","price":2000.0,"currency_code":"AUD","in_stock":true},{"title":"31mm Unmounted","offer_id":42506984128581,"sku":"040035","price":1410.0,"currency_code":"AUD","in_stock":true},{"title":"36mm Unmounted","offer_id":42506984161349,"sku":"040036","price":1570.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/antlia-sho-3nm-pro-filters-125-inch-808068.jpg?v=1731540419"},{"product_id":"antlia-lrgb-v-pro-filters-1-25-inch","title":"Antlia LRGB V Pro Filters","description":"\u003cp\u003eThe Antlia LRGB-V Pro series filters are designed for monochrome cameras that use both CCD and CMOS sensors. Suitable sensors include KAF\/KAI sensors, Sony IMX sensors, GSENSE and other sensor manufacturers. The LRGB-V Pro set is designed to approximately equalize the RGB response from the flux of red-sensitive CCD detectors. The result is that you achieve 1:1:1 equalized RGB exposures with the benefit of simplified post processing and reduced imaging time. New LRGB-V Pro series filters feature a carefully designed spectral gap between the green and red channels to minimize the effect of light pollution and to provide high transmittance of useful frequencies. The filters’ design maximizes the capture of details from fainter galaxies and nebulae emissions. The LRGB-V Pro series filters guarantee the high transmission of the OIII band in both the B and G filters (OIII signal \u0026gt;95% in blue and green). The bandwidth of the B channel is narrowed for the purpose of improving the blue channel overflow (haloing) around the star due to B channel overexposure. Antlia LRGB-V Pro series filters block the emission line around 589nm by the design of wide gap between G and R filters, which suppresses much of the light pollution from high pressure sodium and mercury street lamps and results in a more natural color balance. The uniformity in substrate thickness delivers good parfocal performance across all Antlia filters.\u003c\/p\u003e\n\u003cp\u003eHighlight of LRGB-V Pro series set\u003c\/p\u003e\n\u003cp\u003e1. Premium coating technology and finely polished substrate Our quality selection processes are optimized to ensure highly homogeneous glass-substrates. Our application of advanced optical coating technology and double-sided precision polishing achieves both consistent parfocal and optical performance across all filters. 2. Maximized colour balance and contrast for each of the three RGB channels and excellent S\/N performance Dozens of coating layers are deposited on both sides of the glass substrate that enables LRGB-V Pro filters to achieve a high SNR. The Anti reflection coatings and carefully designed spectral gaps minimize unwanted light scatter and maximize useful signal data for each filter channel.\u003c\/p\u003e\n\u003cp\u003e3. Tighter star profiles and halo reduction The cut-off rate of LRGB-V Pro series set is designed in high level to minimize halos around brighter stars and reduce star bloat. Our careful design of the blue channel transmission characteristics targets the problem of blue star bloating.\u003c\/p\u003e\n\u003cp\u003eApplication and Performance:\u003c\/p\u003e\n\u003cp\u003e1. Designed for monochrome CCD and CMOS cameras\u003c\/p\u003e\n\u003cp\u003e2. Great imaging colors for celestial objects, galaxies, star clusters and nebulae\u003c\/p\u003e\n\u003cp\u003e3. AR anti-reflection film design for secondary reflection and star halo reduction\u003c\/p\u003e\n\u003cp\u003e4. R-Filter provides maximum transmission of H-alpha and S II emission\u003c\/p\u003e\n\u003cp\u003e5. B\/G overlap doubles the energy in the OIII line\u003c\/p\u003e\n\u003cp\u003e6. Balanced RGB-design offer 1:1:1 exposure times for most telescope optical systems\u003c\/p\u003e\n\u003cp\u003e7. All Antlia LRGB-V Pro filters are edge blackened to eliminate internal reflections from stray light\u003c\/p\u003e\n\u003cp\u003e8. The substrate thickness of each of the four LRGB filers is maintained to tight tolerances\u003c\/p\u003e\n\u003cp\u003e9. Not recommended for Solar observing and imaging\u003c\/p\u003e\n\u003cp\u003e10. Not recommended for visual observation\u003c\/p\u003e\n\u003cp\u003eImportant Note: When using any parfocal filters, the user may still experience focus shifts between filters during long imaging sessions. It is important to remember that temperature shifts will change the length of the optical path due to the differential contraction between the telescope tube and the glass optical elements. It is recommended that the photographers check focus either manually or automatically in software every 1 to 2 hours. In cases where the telescope has been brought from a warm environment to outside, more frequent focus checks are required until the equipment has stabilized nearer to ambient temperature.\u003c\/p\u003e\n\u003cp\u003eTechnical Specifications:\u003c\/p\u003e\n\u003cp\u003eBasic Substrate: optical substrate\u003c\/p\u003e\n\u003cp\u003eFilter Thickness: 2mm+\/-0.05mm for 1.25’’\u003c\/p\u003e\n\u003cp\u003eSurface Quality: S\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp\u003eTransmitted Wavefront: Lambda\/4 or better.\u003c\/p\u003e\n\u003cp\u003eParallelism: less than 30 arcsec\u003c\/p\u003e\n\u003cp\u003eSingle \/ Non-glued substrate\u003c\/p\u003e","brand":"QHY","offers":[{"title":"1.25 inch Mounted","offer_id":42506976264261,"sku":"040029","price":520.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch Mounted","offer_id":42506976297029,"sku":"40032","price":820.0,"currency_code":"AUD","in_stock":true},{"title":"31mm Unmounted","offer_id":42506976329797,"sku":"040030","price":570.0,"currency_code":"AUD","in_stock":true},{"title":"36mm Unmounted","offer_id":42506976362565,"sku":"040031","price":630.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/antlia-lrgb-v-pro-filters-125-inch-799874.jpg?v=1731540419"},{"product_id":"antlia-alp-t-dual-band-5nm-filter-2-inch-m48-mounted","title":"Antlia ALP-T Dual Band 5nm Filter - 2 Inch\/M48 Mounted","description":"\u003cp\u003eALP-T Dual Band 5nm Filter is best suited for optics f-ratios slower than f\/3.6, the standard Antlia ALP-T Dual Band filter is highly recommended. Meanwhile, if you seek the best possible performance with any optics faster than f\/2.2, the highspeed version is the best choice.\u003c\/p\u003e\n\u003cp\u003eThe Antlia ALP-T dual band 5nm series filter is a dual line-pass filter that was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's and astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on our ALP-T ultra dual-band filter effectively isolate the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD) 4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images.\u003c\/p\u003e\n\u003cp\u003eThe Antlia ALP-T Dual Band filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post-processing efforts to isolate faint details from the background light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication and Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned especially for optics, slower than f\/3.6\u003c\/p\u003e\n\u003cp\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/p\u003e\n\u003cp\u003eSuppression of optical density (OD) 4.5 on unwanted wavelengths adds signal-to-noise\u003c\/p\u003e\n\u003cp\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/p\u003e\n\u003cp\u003eIdeal flat-top and moderate bandpass reducing spectrum downshifts\u003c\/p\u003e\n\u003cp\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter\u003c\/p\u003e\n\u003cp\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/p\u003e\n\u003cp\u003eNear IR (NIR) is blocked up to 1050nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" width=\"585px\" align=\"LEFT\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003eHydrogen-alpha\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003eOxygen III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFWHM\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e5nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e657.8nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e502.2nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003ePeak Transmission\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e88%\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e82%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eBlocking\u003c\/td\u003e\n\u003ctd colspan=\"2\" rowspan=\"1\" valign=\"top\"\u003e≥OD4.5 @ 300-1050nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"top\"\u003e2mm+\/-0.05mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Ring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2'' (M48*0.75)\u003c\/p\u003e\n\u003cp\u003eUltra-thin filter cell to minimize vignetting by maximize possible clear aperture\u003c\/p\u003e\n\u003cp\u003eBlack Anodized Finish\u003c\/p\u003e\n\u003cp\u003eLaser Engraving No Fading\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpectrum Curve:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ABUIABACGAAgjqickgYov6i9hwIwwgk4lgw-4.jpg\"\u003e\u003cimg class=\"aligncenter size-full wp-image-138748\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ABUIABACGAAgjqickgYov6i9hwIwwgk4lgw-4.jpg\" alt=\"\" width=\"1218\" height=\"1558\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Recommended:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSolar imaging\u003c\/p\u003e\n\u003cp\u003eNight visual observation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Permitted:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/p\u003e\n\u003cp\u003eSerious eye damage will result if you fail to observe the warning\u003c\/p\u003e","brand":"QHY","offers":[{"title":"Default Title","offer_id":42045283172421,"sku":"40050","price":649.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/antlia-alp-t-dual-band-5nm-filter-2-inchm48-mounted-132422.jpg?v=1731540419"},{"product_id":"alp-t-dual-band-5nm-highspeed-filter","title":"Antlia ALP-T Dual Band 5nm Highspeed Filter","description":"\u003cp\u003eAntlia ALP-T Dual Band 5nm Highspeed Filters are optimized to work with high-speed imaging systems by shifting slightly the passband and center wavelength. Using these highspeed filters between optics f\/2.2 and f\/3.6 shows much stronger and more contrasted in nebulae imaging compared to the standard version,  if you seek the best possible performance with any optics faster than f\/2.2, the highspeed version is the best choice.\u003c\/p\u003e\n\u003cp\u003eBut keep in mind, the blue shift data by the computer simulation indicates narrowband filter shifts its bandwidth to shorter wavelengths with faster optics than f\/2, transmission at the emission wavelength may decrease perhaps 15%-20%. Although the Antlia ALP-T highspeed filter has similar transmission rates reduction in the H-a and OIII when the filter is used on fast optics, based on current standard version users’ data, it is evident that the filter still has the high performance of increase in emission nebula contrast and minimized halo.\u003c\/p\u003e\n\u003cp\u003eThe highspeed version price is the same as the standard filters and double benefits for the high-speed optics users. Worth mentioning is that Antlia inspected and measured products piece by piece with one of Agilent Cary’s professional spectrophotometer, resolution\/slit width is up to 0.2nm, which make us provide highly reliable and consistent products to you.\u003c\/p\u003e\n\u003cp\u003eThe Antlia ALP-T dual band 5nm series filter is a dual line-pass filter that was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's and astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on our ALP-T ultra dual band filter effectively isolate the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images.\u003c\/p\u003e\n\u003cp\u003eThe filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post-processing efforts to isolate faint details from the background light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication and Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned especially for fast astronomy optics, in particular f-ratios f\/2.2 to f\/3.6\u003c\/p\u003e\n\u003cp\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/p\u003e\n\u003cp\u003eSuppression of optical density (OD)4.5 on unwanted wavelengths adds signal-to-noise\u003c\/p\u003e\n\u003cp\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/p\u003e\n\u003cp\u003eIdeal flat-top and moderate bandpass reducing spectrum down shifts\u003c\/p\u003e\n\u003cp\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter\u003c\/p\u003e\n\u003cp\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/p\u003e\n\u003cp\u003eNear IR (NIR) is blocked up to 1050nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" width=\"585px\" align=\"LEFT\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003eHydrogen-alpha\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003eOxygen III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFWHM\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e5nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e657.8nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e502.2nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003ePeak Transmission\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e88%\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e82%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eBlocking\u003c\/td\u003e\n\u003ctd colspan=\"2\" rowspan=\"1\" valign=\"top\"\u003e≥OD4.5 @ 300-1050nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"top\"\u003e2mm+\/-0.05mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Ring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2'' (M48*0.75)\u003c\/p\u003e\n\u003cp\u003eUltra-thin filter cell to minimize vignetting by maximize possible clear aperture\u003c\/p\u003e\n\u003cp\u003eBlack Anodized Finish\u003c\/p\u003e\n\u003cp\u003eLaser Engraving No Fading\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpectrum Curve:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ABUIABACGAAgjqickgYov6i9hwIwwgk4lgw-4.jpg\"\u003e\u003cimg class=\"aligncenter wp-image-138748 size-full\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ABUIABACGAAgjqickgYov6i9hwIwwgk4lgw-4.jpg\" alt=\"\" width=\"1218\" height=\"1558\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Recommended:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSolar imaging\u003c\/p\u003e\n\u003cp\u003eNight visual observation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Permitted:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/p\u003e\n\u003cp\u003eSerious eye damage will result if you fail to observe the warning\u003c\/p\u003e","brand":"QHY","offers":[{"title":"Default Title","offer_id":42045298114629,"sku":"040052","price":689.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/antlia-alp-t-dual-band-5nm-highspeed-filter-901684.jpg?v=1731540419"},{"product_id":"antlia-oiii-3nm-2inch-filter","title":"Antlia OIII 3nm 2inch filter","description":"\u003cp\u003eAntlia OIII 3nm Pro narrowband filter optimizes the FWHM (full width half maximum) to 3nm \u003cins cite=\"mailto:Ted%20Dobosz\" datetime=\"2021-01-06T13:06\"\u003e\u003c\/ins\u003ebandpass. As the bandwidth becomes narrower, the 3nm Pro narrowband filters enhance the contrast of emission targets by lowering the unwanted background signal. Antlia OIII 3nm Pro filters are designed to deliver 85% transmission at the 500.7nm line which provides you with the maximum signal and well-defined nebulae structures.\u003c\/p\u003e\n\u003cp\u003eConventional broader narrowband filters cause a heavy loss in transmission due to the strong Center Wavelength (CWL) shift. We guarantee T\u0026gt;85% within 1nm range of the center bandwidth, which means that the 3nm Pro narrowband filter can guarantee high transmittance for working with both long focal ratios and fast optical systems. Blueshift data shows that Antlia 3nm Pro filters can be used with nearly all systems as fast as f\/3 with minimal loss in emission signal and meet the requirements of fast optics like Hyperstar and RASA.\u003c\/p\u003e\n\u003cp\u003eThe out-of-band blocking specification is rated OD5 (0.001%) which delivers an excellent SNR(signal-to-noise ratio) and effective cut-off rate to minimize interference from other wavelengths. Improved sharp cut-off astrophotography 3nm Pro filters are designed to minimize halos around bright stars.\u003c\/p\u003e\n\u003ch6\u003e\u003cspan style=\"color: #f79b65;\"\u003eApplication and Performance:\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp\u003eHigh transmittance and smallest bandwidth to maximize contrast\u003c\/p\u003e\n\u003cp\u003eSteep spectral profile minimizes halos around bright stars\u003c\/p\u003e\n\u003cp\u003eA single substrate to eliminate internal reflections\u003c\/p\u003e\n\u003cp\u003eNarrowband Objects: OIII Emission Nebulae, Planetary, Wolf Rayet Nebulae and Supernova Remnants\u003c\/p\u003e\n\u003cp\u003eUse in light polluted areas and dark sites\u003c\/p\u003e\n\u003cp\u003eExtends imaging time when the moon is up\u003c\/p\u003e\n\u003cp\u003eAntlia narrowband Pro filters can be used down to F\/3 systems with slight loss of signal\u003c\/p\u003e\n\u003cp\u003eAll Antlia Narrowband filters are edge blackened to eliminate internal reflections from stray light\u003c\/p\u003e\n\u003cp\u003eSuperior optical reliability reduces post image processing\u003c\/p\u003e\n\u003cp\u003eThis filter is not suited to deep sky objects that do not contain OIII emissions.\u003c\/p\u003e\n\u003ch6\u003e\u003cspan style=\"color: #f79b65;\"\u003eTechnical Specifications:\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp\u003e\u003cstrong\u003eBasic Substrate:\u003c\/strong\u003e optical substrate\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Thickness:   \u003c\/strong\u003e2mm+\/-0.05mm for 2'' mounted\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFWHM (Full width at half maximum): \u003c\/strong\u003e3nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCWL (Central Wavelength)\u003c\/strong\u003e: 500.7nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePeak Transmission:\u003c\/strong\u003e ＞85%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlocking: \u003c\/strong\u003e\u0026gt; 5 OD(0.001% out of band blocking) @ 300-1000nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSurface Quality: \u003c\/strong\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTransmitted Wavefront: \u003c\/strong\u003eLambda\/4 or better.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eParallelism: \u003c\/strong\u003eless than 30 arcsec\u003c\/p\u003e\n\u003cp\u003eSingle \/ Non-glued substrate\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #f79b65;\"\u003eWarranty: 3-years against delamination\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6\u003eDO NOT LOOK AT THE SUN WITH ANTLIA FILTERS.\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhen we design filters for astronomy imaging systems, we look at how they will work together with optical systems, carefully designing the blocking and bandpass parameters to achieve an optimum result. The out-of-band blocking rate is a very important performance index since it is designed to sharply attenuate off-band wavelengths. The result is that the Antlia OIII 3nm Pro filter delivers excellent contrast with extremely dark backgrounds whilst delivering a high transmission of the OIII signal. Such filters are more difficult to produce to a consistently high standard.\u003c\/p\u003e\n\u003cp\u003eEach filter is individually tested and scanned to ensure that the quality meets the high-performance parameters. The end result is a filter that achieves excellent contrast but with a higher production cost. We believe the price-to-performance ratio compares more favorably than similar premium filters in the market.\u003c\/p\u003e\n\u003cp\u003eSKU: ANTLIAOIII3nm2\u003c\/p\u003e","brand":"QHY","offers":[{"title":"Default Title","offer_id":42045303291973,"sku":"ANTLIAOIII3nm2","price":679.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/antlia-oiii-3nm-2inch-filter-946269.jpg?v=1731540419"},{"product_id":"antlia-sii-3nm-2inch-filter","title":"Antlia SII 3nm 2inch Filter","description":"\u003cp\u003eAntlia SII 3nm Pro narrowband filter optimizes the FWHM (full-width half maximum) to 3nm bandpass. As the bandwidth becomes narrower, the 3nm Pro narrowband filters enhance the contrast of emission targets by lowering the unwanted background signal. Antlia SII 3nm Pro filter is designed to deliver 88% transmission at the 671.6nm line which provides you with the maximum signal and well-defined nebulae structures.\u003c\/p\u003e\n\u003cp\u003eConventional broader narrowband filters cause a heavy loss in transmission due to the strong (Center Wavelength (CWL)-shift. We guarantee T\u0026gt;88% within 1nm range of the center bandwidth, which means that the 3nm Pro narrowband filter can guarantee high transmittance for working with both long focal ratios and fast optical systems. Blue-shift data show that Antlia SII 3nm Pro filters can be used with nearly all systems as fast as f\/3 with minimal loss in emission signal and meet the requirements of fast optics like Hyperstar and RASA.\u003c\/p\u003e\n\u003cp\u003eThe out-of-band blocking specification is rated OD5 (0.001%) which delivers an excellent SNR(signal-to-noise ratio) and effective cut-off rate to minimize interference from other wavelengths. Improved sharp cut-off astrophotography 3nm Pro filters are designed to minimize halos around bright stars.\u003c\/p\u003e\n\u003ch6\u003e\u003cspan style=\"color: #fab25a;\"\u003eApplication and Performance:\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp\u003eHigh transmittance and smallest bandwidth to maximize contrast\u003c\/p\u003e\n\u003cp\u003eA steep spectral profile minimizes halos around bright stars\u003c\/p\u003e\n\u003cp\u003eA single substrate to eliminate internal reflections\u003c\/p\u003e\n\u003cp\u003eNarrowband Objects: SII Emission Nebulae, Planetary, Wolf-Rayet Nebulae and Supernova Remnants\u003c\/p\u003e\n\u003cp\u003eUse in light-polluted areas and dark sites\u003c\/p\u003e\n\u003cp\u003eExtend imaging time when the moon is up\u003c\/p\u003e\n\u003cp\u003eAll Antlia narrowband Pro filters can be used down to F\/3 with a slight loss of signal\u003c\/p\u003e\n\u003cp\u003eAll Antlia Narrowband filters are edge-blackened to eliminate internal reflections from stray light\u003c\/p\u003e\n\u003cp\u003eSuperior optical reliability reduces post-image processing\u003c\/p\u003e\n\u003cp\u003eThis filter is not suited to deep-sky objects that do not contain SII emissions.\u003c\/p\u003e\n\u003ch6\u003e\u003cspan style=\"color: #fab25a;\"\u003eTechnical Specifications:\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp\u003e\u003cstrong\u003eBasic Substrate:\u003c\/strong\u003e Schott optical substrate\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Thickness：\u003c\/strong\u003e2mm+\/-0.05mm for 2'' mounted\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFWHM (Full width at half maximum): \u003c\/strong\u003e3nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCWL (Central Wavelength)\u003c\/strong\u003e: 671.6nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePeak Transmission:\u003c\/strong\u003e ＞88%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlocking: \u003c\/strong\u003e\u0026gt; 5 OD(0.001% out of band blocking) @ 300-1000nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSurface Quality: \u003c\/strong\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTransmitted Wavefront: \u003c\/strong\u003eLambda\/4 or better.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eParallelism: \u003c\/strong\u003eless than 30 arcsec\u003c\/p\u003e\n\u003cp\u003eSingle \/ Non-glued substrate\u003c\/p\u003e\n\u003ch6\u003e\u003cspan style=\"color: #fab25a;\"\u003eWarranty: 3 years against delamination\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp\u003eSKU: ANTLIASii3nm2\u003c\/p\u003e","brand":"QHY","offers":[{"title":"Default Title","offer_id":42045303423045,"sku":"ANTLIASii3nm2","price":679.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/antlia-sii-3nm-2inch-filter-859733.jpg?v=1731540420"},{"product_id":"optolong-l-extreme-f-2-filter-2-inch","title":"Optolong L-eXtreme f\/2 filter 2 inch","description":"\u003cp\u003e\u003cstrong\u003e1.  L-eXtreme F\/2  Introduction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong L-eXtreme F\/2 is a dual-band (500.7 nm and 656.28 nm, FWHM=7 nm) narrowband pass filter that meets the requirements for transmission at continuously varying angles. Astronomically characterised spectral lines (OIII, Ha) as the main transmission wavelengths, the OIII and H-Alpha nebula emission lines pass accurately at f2 - f3.3 Focal Ratio.   It's a product that Optolong has developed specifically for fast optical systems or fast focal ratio imaging systems. It has performed well on RASA, HyperStar, and other fast ratio telescopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e♦Together with one-shot colour astronomical cameras, monochrome astronomical cameras, and Digital SLR cameras, you can fast and quickly obtain clear and detailed images of the deep sky;\u003c\/p\u003e\n\u003cp\u003e♦Ideal for fast optical systems, like RASA, Hyperstar, and other fast focal ratio telescope users;\u003c\/p\u003e\n\u003cp\u003e♦Recommended for using a fast optical system with a focal ratio from f2 to f3.3;\u003c\/p\u003e\n\u003cp\u003e♦Anti-light pollution、better contrast、more details of the celestial bodies: This filter cuts out background light and noise beyond the target celestial bodies to get better details and contrast of the images. L-eXtreme F\/2 can effectively block light pollution so that the images will not affected by unwanted lights and skylight of the background. You can quickly get satisfactory pictures in fast optical systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Spectrum and Characteristic\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eBased on the characteristics of celestial bodies’ emission lines and light pollution emission lines, the L-eXtreme F\/2 retains the prominent nebula OIII and Ha colours while blocking most of the light pollution. Specifically designed and optimally calculated for the characteristics of a fast optical system, the L-eXtreme F2 always keeps both OIII and Ha bands having high transmittance, which helps users to capture nebulae emission lines in these bands more accurately and quickly and obtain better astrophotographic images.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter wp-image-145765 size-full\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/L-eXtreme-f2a.jpg\" alt=\"L-eXtreme F\/2\" width=\"1000\" height=\"1015\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to read the chart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e▲The horizontal axis is the Wavelength in Nanometers(nm).\u003c\/p\u003e\n\u003cp\u003e▲The vertical axis is transmission in %.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/0ff2d7f395c427aa390ff53daf333cec-1.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Coating Technology\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e·Multi-layers anti-reflection coating\u003c\/p\u003e\n\u003cp\u003e·Non-cementing optical substrate coating\u003c\/p\u003e\n\u003cp\u003e·Optolong filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.\u003c\/p\u003e\n\u003cp\u003e·Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.\u003c\/p\u003e\n\u003cp\u003eSKU: 14803\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":42045303750725,"sku":"14803","price":539.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-extreme-f2-filter-2-inch-947434.jpg?v=1731540833"},{"product_id":"optolong-l-quad-enhance-filter-2inch","title":"Optolong L-Quad Enhance Filter 2 inch","description":"\u003cp\u003eL-Quad Enhance Filter (L-QEF) is a quad bandpass light pollution suppression filter for colour cameras. It effectively suppresses the transmission of light pollution wavelengths, especially light pollution generated by artificial lighting (including mercury and sodium lamps), as well as the effects of natural skylight-induced effects on the shot, thus effectively enhancing the contrast and details of the celestial bodies, and making the objects more distinct and stereoscopic. This filter provides better color balance while improving resistance of light pollution. L-QEF can be used for both wide field astrophotography, such as the Milky Way in Summer and Winter, and deep sky objects such as nebulae, galaxies, star clusters, and so forth; It allows you to save a lot of time during the shooting process and get better results at the same time. The design of quad bandpass maximises the colour balance of nebulae, galaxies and other broadband spectral targets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCuts out light pollution from mercury and sodium lamps and produces a nice broadband image with minimal colour cast;\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eSignal-to-noise ratio (SNR);\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eNear IR cut-off to 1000nm, reducing the effects of IR noise;\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eL-QEF has more than 90% transmittance of the nebula emission lines at H-Beta\/OIII\/H-Alpha\/SII, with cut-off depth from OD2 to OD4, thus providing a significant increase in resistance to light pollution. L-QEF is good for night sky from Bortel 1 to Bortel 7 levels; (Bortel 8, Bortel 9 environments shall not be recommended, kindly chose Optolong other narrow-band filters, 3nm, 7nm type of filters are available.);\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eSuitable for wide range of deep sky targets: it covers most nebulae, galaxies, star clusters, reflected and emitted line signals astronomical objects with higher contrast and rich details while maintaining excellent colour balance. L-QEF is superior to other filters of the same type.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eSpectrum and Characteristic\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ctable style=\"height: 206px;\" border=\"1\" width=\"724\" cellspacing=\"1\" cellpadding=\"1\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSbustrate\u003c\/td\u003e\n\u003ctd\u003eoptical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e1.85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM\u003c\/td\u003e\n\u003ctd\u003eQuad bandpass filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking range\u003c\/td\u003e\n\u003ctd\u003e300-1000nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Depth\u003c\/td\u003e\n\u003ctd\u003eOD2-OD4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitted Wavefront RMS\u003c\/td\u003e\n\u003ctd\u003eλ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e Parallelism\u003c\/td\u003e\n\u003ctd\u003e30s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBased on the characteristics of celestial bodies’ emission lines and light pollution emission lines, L-Quad Enhance filter effectively reduces the impact of light pollution and suppresses the background light of astronomical objects, thus effectively enhancing the contrast and details of the celestial bodies. Using L-QEF filter can help you save a lot of time during the shooting process, yet obtaining incredible results.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignnone wp-image-145519 size-medium\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Quadband-800x391.jpg\" alt=\"Optolong L-Quad\" width=\"800\" height=\"391\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":42045303914565,"sku":"14702","price":329.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-quad-enhance-filter-2inch-456161.jpg?v=1731540833"},{"product_id":"optolong-l-ultimate-filter-2-inch","title":"Optolong L-Ultimate filter","description":"\u003cp\u003eIt's about a 3nm dual band designed to drastically reduce the effect of light pollution, the 3nm isolates the nebulae's emissions into H-Alpha (red) and OIII (green-blue). It blocks light pollution, maximizes the signal from nebulae, and darkens the sky background. It also blocks artificial light from mercury vapor lamps, high and low pressure sodium vapor lights, and unwanted natural light caused by the emission of neutral oxygen in our atmosphere. Maximizes the transmission of the main emission lines of the nebula in OIII (496nm and 500nm) and H-alpha (656nm). Used with DSLR, color\/MONO CMOS and CCD, however, this filter is not suitable for fast ratio systems.\u003c\/p\u003e\n\u003cp\u003eThe advantage of L-Ultimate is that it only passes through the emission lines OIII(500.7nm) and Ha(656.3nm), in which case all other light pollution emission lines are eliminated so that only the emission and reflection signals of the nebula are captured during imaging. Therefore, the sky background of the image is darker, and the contrast between the nebulae and the signal-to-noise ratio are improved to the greatest extent. In heavy light pollution areas, the product can also selectively filter light pollution and clutter signals through the emission lines of nebulae, and finally avoid the impact of light pollution on astrophotography.\u003c\/p\u003e\n\u003cp\u003eIt is different from the series of dual-narrowband L-eNhance and L-eXtreme in that L-Ultimate is a dual-3nm bandwidth filter that only passes through Ha and OIII emission lines. You will get a darker sky background, more contrast of the image and the suppression on stars. L-Ultimate has also been optimised in terms of halo performance, so that there is no obvious halo when shooting on a bright star object.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-medium wp-image-145496\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Graph--800x392.png\" alt=\"\" width=\"800\" height=\"392\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003ctable border=\"1\" width=\"600\" cellspacing=\"2\" cellpadding=\"1\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eoptical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM\u003c\/td\u003e\n\u003ctd\u003eOIII 3nm Ha 3nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking range\u003c\/td\u003e\n\u003ctd\u003e300-1000nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;OD4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitted Wavefront RMS:\u003c\/td\u003e\n\u003ctd\u003eλ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":43103921078341,"sku":"11601","price":500.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":43103921111109,"sku":"11602","price":670.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-ultimate-filter-2-inch-880415.jpg?v=1731540833"},{"product_id":"optolong-l-pro-filter","title":"Optolong L-Pro Filter","description":"\u003cp\u003eOptolong L-Pro 1.25 inch is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eWarning - Do not use this filter for solar purposes ! \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong L-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural area with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003eOptolong L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro is the best choice for light pollution suppression.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptical glass fine material\u003c\/li\u003e\n\u003cli\u003eSpectrum: 380-750nm\u003c\/li\u003e\n\u003cli\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/li\u003e\n\u003cli\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/li\u003e\n\u003cli\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-medium wp-image-145135\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Optolong-l-pro-light-curve--800x422.jpg\" alt=\"\" width=\"800\" height=\"422\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42151311409221,"sku":"10201","price":260.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42151311441989,"sku":"10202","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-C","offer_id":42151311474757,"sku":"10203","price":430.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-FF","offer_id":42151311507525,"sku":"10204","price":470.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon NK-FF","offer_id":42151311540293,"sku":"10205","price":470.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-pro-filter-2-inch-706785.jpg?v=1731540833"},{"product_id":"optolong-l-enhance-filter","title":"Optolong L-eNhance filter","description":"\u003cp\u003e\u003cstrong\u003eL-eNhance filter\u003c\/strong\u003e\u003cbr\u003eThe relentless spread of urbanization and its associated light pollution have become a growing problem for all amateur astrophotographers. The current solutions to the problem can be expensive and might include the purchase of a monochrome camera, several types of narrowband filters, and a filter wheel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptolong L-eNhance\u003c\/strong\u003e filter provides an economical and practical solution for amateurs. It is a dual-band pass filter that has been designed for DSLR (digital SLR), color CMOS, and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allow amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Optolong believes the design of our L-eNhance filter is a technical innovation among filters. It effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. The performance of this filter delivers images that superbly control the impact of light-polluted skies.\u003c\/p\u003e\n\u003cp\u003eHydrogen is the largest, the most primitive, the simplest, and the oldest element in the universe. Scientists consider that Hydrogen amounts to more than 90% of visible substances in space. Our sun is 5 billion years old, but so far hydrogen is still the key matter of nuclear fusion. While the sulfur element does not have much scientific significance, keeping H and O is meaningful for the exploration of life.\u003cbr\u003eTherefore, we highlight H-a, H-b, O3, and O2, and reduce the signal of sulfur.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Spectrum and Characteristic\u003c\/strong\u003e\u003cbr\u003eSubstrate: B270\u003cbr\u003eThickness: 1.85mm\u003cbr\u003eTpeak: T\u0026gt;90%\u003cbr\u003eBlocking range: 300-1000nm\u003cbr\u003eBlocking depth: light pollution line blocking \u0026gt;99%\u003cbr\u003eSurface quality: 60\/40\u003cbr\u003eTransmitted Wavefront RMS: λ\/4\u003cbr\u003eParallelism: 30s\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"488\" width=\"1000\" alt=\"L-eNhance filter 1.25\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/L-enhnce-125c.jpg\" class=\"aligncenter wp-image-145746 size-full\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/L-enhnce-125c.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eHow to read the chart?\u003c\/p\u003e\n\u003cp\u003e▲The horizontal axis is the Wavelength in Nanometers(nm).\u003c\/p\u003e\n\u003cp\u003e▲The vertical axis is transmission in %.\u003c\/p\u003e\n\u003cp\u003e▲The WHITE line shows the transmission of the filter. The artificial emission lines are shown in Yellow. The emission lines from the constellation are shown in GREEN, BLUE, AND RED.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/0ff2d7f395c427aa390ff53daf333cec.jpg\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/0ff2d7f395c427aa390ff53daf333cec.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eSKU: 13801\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42151578140741,"sku":"13801","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42151578173509,"sku":"13802","price":400.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-C","offer_id":42151578206277,"sku":"13804","price":450.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-enhance-filter-125-inch-180620.jpg?v=1731540834"},{"product_id":"optolong-l-extreme-filter","title":"Optolong L-eXtreme filter","description":"\u003cp\u003eL-eXtreme is a two 7nm bandpass filter which can be used with one-shot color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is also more suited for fast systems. The convenience and cost effectiveness of this filter allows amateurs to image a rich emission nebulas, even in bright, light pollution skies. Optolong believes the design of L-eXtreme filter would be better choice for fast systems in competitive price. It isolates the H-Alpha, and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between nebulae were maximized. For people who is living in very light polluted areas, or when the moon is out, the L-eXtreme will be a good filter.\u003c\/p\u003e\n\u003cp\u003eUnlike the Optolong L-eNhance filter which is a tri-band (transmits Hb, Ha, and OIII), the L-eXtreme filter is dual band that passes Ha and OIII emission lines.The advantage of the L-eXtreme filter is that there is no transmission between the H-beta and OIII lines, as there is no nebula emission lines there. In this case, it isn't letting light pollution come through so that maximize nebulas signal and make the sky background darker while imaging. The L-eXtreme filter should better isolate the emission lines only and better protect from light pollution.\u003c\/p\u003e\n\u003cp\u003eHydrogen is the largest, the most primitive, the simplest, and the oldest element in the universe. Scientists consider that Hydrogen amounts to more than 90% of visible substance in space. Our sun is 5 billion years old, but so far hydrogen is still the key matter of nuclear fusion. While the sulfur element does not have much scientific significance, so keeping H and O is meaning for exploration of life.\u003cbr\u003eTherefore, we highlight H-a, H-b, O3 and O2, and reduce the signal of sulfur.\u003c\/p\u003e\n\u003ch5\u003eSpectrum and Characteristics\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eSbustrate: B270\u003c\/li\u003e\n\u003cli\u003eThickness: 1.85mm\u003c\/li\u003e\n\u003cli\u003eTpeak: T\u0026gt;90%\u003c\/li\u003e\n\u003cli\u003eBlocking range: 300-1000nm\u003c\/li\u003e\n\u003cli\u003eBlcoking depth: light pollution line blocking \u0026gt;99%\u003c\/li\u003e\n\u003cli\u003eSurface quality: 60\/40\u003c\/li\u003e\n\u003cli\u003eTransmitted Wavefront RMS: λ\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-medium wp-image-145155\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Optolong-L-eXtreme-curve--800x386.jpg\" alt=\"\" width=\"800\" height=\"386\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42151619723333,"sku":"13901","price":420.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42151619756101,"sku":"13902","price":540.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z Clip-In","offer_id":44862003740741,"sku":"AS100313","price":420.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-extreme-filter-2-inch-422662.jpg?v=1731540833"},{"product_id":"optolong-lrgb-filters","title":"Optolong LRGB Filters","description":"\u003cp\u003e\u003cspan\u003eOptolong LRGB filter set is designed for maximum contrast and with extremely high gradients for clear differentiation of colors. The LRGB filter set divides the spectrum into its components red, green, blue and luminance. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. Gap between green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRGB, parfocal:1:1:1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCreat images in their true original colors showing a wealth of natural detail;\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSteep bandpass filters to eliminate UV and IR interference;\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInclude Luminance (UV\/IR Cut), Red, Green, and Blue filters to reproduce the star's color\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20210508\/27fe738c2ce6a5a69e998d648cc17b60.png\" width=\"853\" height=\"528\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42151690600517,"sku":"Opto-LRGB125","price":400.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42151690633285,"sku":"Opto-LRGB2","price":620.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42151690698821,"sku":"Opto-LRGB36","price":470.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/OptolongLRGB.jpg?v=1731547539"},{"product_id":"optolong-uhc-filter","title":"Optolong UHC filter","description":"\u003cp\u003e\u003cspan\u003eThe UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural area with heavy light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMain Use and Performance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for color CCD cameras and unmodified DSLRs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUHC with narrower passband provides higher contrast than CLS. Thus it is more suitable for urban environment where you suffer from severe light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUHC has a substantial red passband and offer superb views for objects like the Orion Nebula (M42).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLight pollution filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cu\u003eWARNING\u003c\/u\u003e: The filters of Optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"438\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"187\"\u003e\n\u003ccol width=\"251\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\" width=\"187\"\u003eSbustrate\u003c\/td\u003e\n\u003ctd width=\"251\"\u003eoptical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eTave\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eBlocking range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e300-700nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eBlcoking depth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eOD3, light pollution line blocking \u0026gt;99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eSurface quality\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e60\/40 (Refer to MIL-O-13830A, MIL-C-48497A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eTransmitted Wavefront RMS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e  ¼ λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003e Parallelism\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e30s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42152607547461,"sku":"10101","price":99.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42152607580229,"sku":"10102","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-C","offer_id":42152607612997,"sku":"10103","price":170.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-FF","offer_id":42152607645765,"sku":"10104","price":200.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon NK-FF","offer_id":42152607678533,"sku":"10105","price":200.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/OptolongUHC.jpg?v=1731557654"},{"product_id":"astronomik-uhc-filter","title":"Astronomik UHC Filter","description":"\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC is THE filter for visual observing.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will enjoy using your Astronomik UHC filter because you will see more stars and more details in deep-sky-objects compared to using filters from all other manufacturers.\u003cbr\u003e\u003cbr\u003eThe Astronomik UHC (Ultra High Contrast) filter allows the transmission of nearly 100% of the radiation from both O-III and the H beta lines. Though the second window for the H-alpha-line is not intended for visual observing, it is important, if the filter is used with an electronic device. All annoying, scattered light from other wavelength sources, including local artificial light pollution, is reliably filtered out. With this strong blocking of the sky background an unexpected wealth of detail becomes visible for gas nebulae and planetary nebulae.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eAstronomik UHC filters’ astounding high light transmission brings better views of deep-sky-objects even to small telescopes! The high transmission of our optical glass filters means that enough light is available to allow successful visual observations with telescopes beginning at 2\" (50mm) aperture. Our Astronomik filters are optimized for use with telescope focal length f \/ ratios of f\/4 to f\/15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play. Another major advantage of our Astronomik UHC filter is the high optical quality of the filter glass. When using Astronomik UHC filters you will quickly notice the same needle-sharp stars which you are familiar with from your astronomical instrument without any filter!\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Very good, for telescopes of all apertures and high exit pupil\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Very good, for telescops from 100 mm aperture\u003c\/li\u003e\n\u003cli\u003eFilm photography: Reasonable, but very long exposure time\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good, colour balance shifted but contrast enhanced\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003etyp. 95% transmission at 486nm (H-beta)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003etyp. 95% transmission at 496nm (O\u003c\/span\u003e\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003etyp. 95% transmission at 501nm (O\u003c\/span\u003e\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003etyp. 95% transmission at 656nm (H alpha)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eoptimum position of transmission for telescopes with focal ratios from f\/10 to f\/3,5\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEntire Blocking of annoying wavelengths\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eIdeal All-round Deep Sky filter even for small telescopes\u003c\/li\u003e\n\u003cli\u003eNot sensitive to humidity or aging\u003c\/li\u003e\n\u003cli\u003eScratch-resistant!\u003c\/li\u003e\n\u003cli\u003eExcellent carrier material. The optical performance of your telescope is not reduced by the filter in any way.\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_uhc_trans-2.png?v=1731644379\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156068634693,"sku":"8h0011","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156068667461,"sku":"8h0012","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156068700229,"sku":"8h00ie","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156068732997,"sku":"8h00kr","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156068765765,"sku":"8h00ls","price":340.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156068798533,"sku":"8h11g5","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156068831301,"sku":"8h00r8","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156068864069,"sku":"8h00xc","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156068896837,"sku":"8h11au","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156068929605,"sku":"8h11kv","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156068962373,"sku":"8h11ei","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156068995141,"sku":"8h00iw","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156069027909,"sku":"8h00hz","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"31 mm","offer_id":42156069060677,"sku":"8h00i0","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"36 mm","offer_id":42156069093445,"sku":"8h00i1","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"50 mm","offer_id":42156069126213,"sku":"8h00a0","price":325.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156069158981,"sku":"8h11jm","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156069191749,"sku":"8h11jm","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm² Unmounted","offer_id":42156069224517,"sku":"8h00bs","price":365.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_UHC_1_25-Inch_4.jpg?v=1731644618"},{"product_id":"astronomik-uhc-e-filter","title":"Astronomik UHC-E Filter","description":"\u003cp\u003eThe UHC-E Filter increases contrast of emission nebulae and comets and blocks the light of typical streetlights as well as airglow. It is best suited for telescopes up to 5\" \/ 125mm.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik UHC-E filter provides a FWHM of 45nm and blocks the light of typical streetlights (e.g. sodium and mercury vapour) as well as airglow. Thus it increases contrast between your target and the night sky. The contrast enhancement is less than that of the Astronomik UHC filter, but at the same time the transmitted amount of starlight is greater. It's therefore better suited to smaller telescopes. As the UHC-E filter passes a spectral line of Carbon (due to the higher FWHM) it opens up the possibility of comet observation.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n\u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n\u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_uhc-e_trans.png?v=1731642724\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Reasonable, an UHC filter is more suitable\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n\u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003etyp. 95% transmission at 496nm (O\u003c\/span\u003e\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003etyp. 95% transmission at 501nm (O\u003c\/span\u003e\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003etyp. 94% transmission at 656nm (H alpha)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003etransmission 465nm to 530nm and above 645nm \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eFull width at half maximum 45nm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eParfocal with other Astronomik filters\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156148162629,"sku":"8h00f0","price":130.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156173852741,"sku":"8h00f1","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156173885509,"sku":"8h00in","price":180.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156173918277,"sku":"8h00ks","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156173951045,"sku":"8h00lt","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156173983813,"sku":"8h11g6","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156174016581,"sku":"8h00r9","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156174049349,"sku":"8h00xd","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156174082117,"sku":"8h11av","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156174114885,"sku":"8h11kw","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156174147653,"sku":"8h11ej","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156174180421,"sku":"8h00ix","price":190.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156174213189,"sku":"8h00bt","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"31 mm","offer_id":42156174245957,"sku":"8h00i2","price":145.0,"currency_code":"AUD","in_stock":true},{"title":"36 mm","offer_id":42156174278725,"sku":"8h00i3","price":160.0,"currency_code":"AUD","in_stock":true},{"title":"50 mm","offer_id":42156174311493,"sku":"8h00bu","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156174344261,"sku":"8h00vl","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156174377029,"sku":"8h00vm","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156174409797,"sku":"8h00vn","price":425.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156174442565,"sku":"8h00vo","price":425.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156174475333,"sku":"8h00vp","price":425.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156174508101,"sku":"8h00vq","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156174540869,"sku":"8h00vr","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156174573637,"sku":"8h00vs","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156174606405,"sku":"8h00by","price":250.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_UHC-E_1_25-Inch.jpg?v=1731641726"},{"product_id":"astronomik-oiii-visual-filter","title":"Astronomik OIII Visual Filter","description":"\u003cp\u003e\u003cstrong\u003eFrom the start, the Astronomik O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efilter has been very specifically designed for the visual observation of gaseous and planetary nebulae. The extremely narrow pass band of the two O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003elines brings a substantial contrast gain to these lines even under best observation conditions. On faint super nova remnants and faint planetary nebulae the Astronomik O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efilter will often make the difference as to whether the object can bee seen or not!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe optimal aperture ratio for the use of the filter is 1:3.7 to 1:15 with apertures of more than 6\" (150mm). Transmission losses and chromatic distortions, which arise with other filters, occur with Astronomik O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efilters only when extremely bright aperture ratios of 1:3 and more come into play. The Astronomik O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efilters thus can expand the view of dispersed objects, generally speaking, to the whole visual field of view of the eyepiece and are not limited to only the center of the eyepiece.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eSince enough light must be available to make use of the O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efilter it is best to use this filter with apertures of more than 6\" (150mm). Smaller instruments do not gather enough light for meaningful and satisfying astronomical work. However, please note: Many experienced Deep Sky observers, with apertures of more than 10\" (250mm), prefer using the O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efilter instead of the more versatile UHC filter. Due to the high optical quality of the Astronomik O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efilter substrate you will see the same needle-sharp stars as you would from your regular telescope.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_oiii_trans_44391394-1147-4d4d-a6e7-cd6d25ddccd3.png?v=1734561349\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_oiii_trans_44391394-1147-4d4d-a6e7-cd6d25ddccd3.png?v=1734561349\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156177391685,"sku":"8h0006","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156177424453,"sku":"8h0045","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156177457221,"sku":"8h00bj","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156177489989,"sku":"8h00bk","price":350.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_oiii_1-25-inch_800x800_f51ef92e-7985-4883-8fc7-07087bc79c3c.jpg?v=1750392265"},{"product_id":"astronomik-cls-filter","title":"Astronomik CLS Filter","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cstrong\u003eThe Astronomik CLS is a budget filter for visual observation, Black \u0026amp; White photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Astronomik CLS blocks the light of the spectral lines of mercury and sodium-vapor lamps and lets the largest part of the visible light and H-alpha emissions pass. All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_cls_trans.png?v=1731970910\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe filters are optimized for use with aperture ratios from 1:3 to 1:15. Transmission losses and chromatic distortions, which are problems with other filters, only appear with Astronomik filters when extremely bright aperture ratios of 1:2 and more are used. The CLS filter is suitable for use with telescopes of all aperture sizes.\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Good, to reduce light pollution by mercury-vapour lamps (streetlight)\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Good, an UHC-E or UHC filter is more suitable\u003c\/li\u003e\n\u003cli\u003eFilm photography: Very good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good, colour balance shifted but contrast enhanced\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e92% transmission at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003e92% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003e92% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003e97% transmission at 656nm (H alpha)\u003c\/li\u003e\n\u003cli\u003epass from 450 to 540nm and beyond 650nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156188237893,"sku":"8h0053","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156188270661,"sku":"8h0054","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156188303429,"sku":"8h00ic","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156188336197,"sku":"8h00ke","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156188368965,"sku":"8h00lc","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156188401733,"sku":"8h11g9","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156188434501,"sku":"8h00r6","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156188467269,"sku":"8h00xa","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156188500037,"sku":"8h11as","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156188532805,"sku":"8h11kx","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156188565573,"sku":"8h11eb","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42170250526789,"sku":null,"price":219.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156188598341,"sku":"8h00ia","price":295.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156188631109,"sku":"8h00fi","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156188663877,"sku":"8h00fj","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156188696645,"sku":"8h00a3","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156188729413,"sku":"8h00tl","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156188762181,"sku":"8h00tm","price":295.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156188794949,"sku":"8h00tn","price":540.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156188827717,"sku":"8h00to","price":550.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156188860485,"sku":"8h00tp","price":550.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156188893253,"sku":"8h00tq","price":580.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156188926021,"sku":"8h00h3","price":580.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156188958789,"sku":"8h00nz","price":580.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156188991557,"sku":"8h00ad","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_CLS_1_25-Inch_4.jpg?v=1731970699"},{"product_id":"astronomik-cls-ccd-filter","title":"Astronomik CLS CCD Filter","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cstrong\u003eThe Astronomik CLS CCD is suitable under light-polluted skies for DSLR Cameras, which have been remodeled for astronomical use. The filter enhances the contrast between all deep-sky objects and the background. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe CLS-CCD Filter enhances the contrast between astronomical objects and the background. Due to the wider transmission curve compared to UHC filters, a greater amount of light will pass the filter. Stars will be less dimmed. This filter has been optimized to block as much spurious light as possible and simultaneously provide the best performance for 'useful' light. A good filter for DSLR-, CCD- and film b\/w-photography as well as observation of deep-sky-objects with telescopes or photo lenses of all aperture f\/2 and above.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe filter blocks completely emission lines of artificial light sources like streetlights (e.g. sodium- and mercury-vapor) as well as the airglow. All 'important' emission lines as well as the spectral range of the night-adapted eye are beeing passed. The supplementary IR-blocking layer allows the use for DSLR- and Webcams without an integrated IR-block filter.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n\u003cli\u003eWith the EOS-Clip model, photography with DSLR cameras is feasible even unter extreme light-polluting conditions without shifting the white balance.\u003c\/li\u003e\n\u003cli\u003eThe 1,25\" and 2\" socket models can be used for observations from light-polluted areas.\u003c\/li\u003e\n\u003cli\u003eIf you plan to create color images from emission line data, our CLS-CCD filter is a great choice for the Luminance channel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eCLS: For cameras with an integrated IR-filter or for visual observation.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_cls-ccd_trans.png?v=1731971148\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Good, to reduce light pollution by mercury-vapour lamps (streetlight)\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Reasonable, an UHC-E or UHC filter is more suitable\u003c\/li\u003e\n\u003cli\u003eFilm photography: Very good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eCCD photography: Very good, optimized rejection of light pollution\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good, colour balance shifted but contrast enhanced\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Very good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e95% transmission at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003e95% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003e95% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003e97% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003epass from 450 to 520nm and from 640 to 690nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156261277765,"sku":"8h00dp","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156261310533,"sku":"8h00dq","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156261343301,"sku":"8h00dn","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156261376069,"sku":"8h00kf","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156261408837,"sku":"8h00ld","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156261441605,"sku":"8h11ga","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156261474373,"sku":"8h00r7","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156261507141,"sku":"8h00xb","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156261539909,"sku":"8h11at","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156261572677,"sku":"8h11ky","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156261605445,"sku":"8h11eg","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156261638213,"sku":"8h00ed","price":295.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156261670981,"sku":"8h00ef","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156261703749,"sku":"8h00fg","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156261736517,"sku":"8h00fh","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156261769285,"sku":"8h00eh","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156261802053,"sku":"8h00tt","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156261834821,"sku":"8h00tu","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156261867589,"sku":"8h00tv","price":740.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156261900357,"sku":"8h00tw","price":740.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156261933125,"sku":"8h00tx","price":765.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156261965893,"sku":"8h00ty","price":780.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156261998661,"sku":"8h00em","price":780.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156262031429,"sku":"8h00u0","price":780.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156262064197,"sku":"8h00l4","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156262096965,"sku":"8h11b4","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156264554565,"sku":"8h00ek","price":365.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_CLS-CCD_1_25-Inch_11.jpg?v=1731971361"},{"product_id":"astronomik-deep-sky-rgb-filter-set","title":"Astronomik Deep Sky RGB filter Set","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cstrong\u003eThe new Astronomik Deep-Sky RGB filters\u003c\/strong\u003e\u003cspan\u003e are the result of a long and detailed process of research and development. We have created the most advanced set of RGB filters for Deep-Sky imaging available today. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curves of the three filters are designed to give you strong and vivid colors with a strong reinforcement of the most important emission lines. Data taken with the new Astronomik Deep-Sky RGB filters is easier to process into a beautiful final masterpiece.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFeedback from our test-users and the first customers is really exciting. All of them reported smaller, sharper stars and this was one of our design goals, so these filters are designed to give you the best contrast and the smallest stars possible!\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eDuring the design of the Deep-Sky RGB filters we took a close look at the sensitivity curves of today’s popular CCD cameras. The result was we found a way to make one set of filters for all kind of sensors ranging from KAF- and KAI-sensors, to the chips made by Sony, meaning you can do 1:1:1 ratio RGB exposures with all sensors, with only minimal tweaking necessary during processing to achieve perfect colours in your image!\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curve characteristics and coatings on the new Deep Sky RGB filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eAdditional to the Deep-Sky RGB filters Astronomik now offers you\u003c\/span\u003e\u003cstrong\u003e three different Luminance filters\u003c\/strong\u003e\u003cspan\u003e. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera, even with instruments with less-than-perfect colour correction. (Link einfügen)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLike all Astronomik Filters, the new Deep-Sky RGB filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAstronomik Deep-Sky RGB Key features:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum transmission of up to 95%\u003c\/li\u003e\n\u003cli\u003eUltra-Sharp, pinpoint star images\u003c\/li\u003e\n\u003cli\u003eHigh contrast\u003c\/li\u003e\n\u003cli\u003eEasy to process data for vivid colours in the final image\u003c\/li\u003e\n\u003cli\u003eOptimized spectral windows for max photon counts on the sensor\u003c\/li\u003e\n\u003cli\u003eMade on finest, opticaly polished glass\u003c\/li\u003e\n\u003cli\u003eExtremly durable, scratch resistant coating\u003c\/li\u003e\n\u003cli\u003eMFR Coating technique for a wide range of focal ratios\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Deep-SkyRGB.png?v=1731709332\"\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156288933957,"sku":"8h00pc","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156288966725,"sku":"8h00pn","price":880.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156289359941,"sku":"8h00py","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156289392709,"sku":"8h00qj","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156289425477,"sku":"8h00qu","price":880.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156289720389,"sku":"8h00o7","price":395.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156289753157,"sku":"8h11bu","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156289785925,"sku":"8h00rf","price":1025.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_Deep-Sky-RGB_1_25-Inch.jpg?v=1731709412"},{"product_id":"astronomik-l-1-uv-ir-filter","title":"Astronomik L-1 UV-IR Block Filter","description":"\u003cp\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003eThe Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eTo give you all the tools to gather the best data possible \u003c\/span\u003e\u003cstrong\u003ewe have expanded our line of Luminance filters\u003c\/strong\u003e\u003cspan\u003e: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLike all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eAdditional note for observers working under light polluted skies:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/AlleLxFilter_V2.jpg?v=1731712853\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156303122501,"sku":"8h00oz","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156303155269,"sku":"8h00pk","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156303188037,"sku":"8h00sj","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156303220805,"sku":"8h00mv","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156303253573,"sku":"8h00su","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156303286341,"sku":"8h11ge","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156303319109,"sku":"8h00t3","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156303351877,"sku":"8h00xr","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156303384645,"sku":"8h11c3","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156303417413,"sku":"8h11kz","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156303450181,"sku":"8h11fa","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156303482949,"sku":"8h00rn","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156303515717,"sku":"8h00ry","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156303548485,"sku":"8h00pv","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156303581253,"sku":"8h00qg","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156303614021,"sku":"8h00qr","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156303646789,"sku":"8h00up","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156303679557,"sku":"8h00uq","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156303712325,"sku":"8h00ur","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156303745093,"sku":"8h00us","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156303777861,"sku":"8h00ut","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156303810629,"sku":"8h00uu","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156303843397,"sku":"8h00uv","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156303876165,"sku":"8h00uw","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156303908933,"sku":"8h00o4","price":115.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156303941701,"sku":"8h11br","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156303974469,"sku":"8h00rc","price":280.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_L-1-UV-IR-Block_1_25-Inch_73e2f4a3-2c3c-4cb8-b262-e41dbc457f2b.jpg?v=1731714012"},{"product_id":"astronomik-l-2-uv-ir-block-filter","title":"Astronomik L-2 UV-IR Block Filter","description":"\u003cp\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. 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Depending on your camera, the Astronomik ProPlanet 642 BP is a great tool either for daylight IR-imaging with your digital camera, or it will reduce seeing effects and enhance contrast when used for lunar- and planetary imaging, and third it will be a very good and low-priced H-alpha Filter for getting started in Deep-Sky Astrophotography of H-alpha regions. \u003cbr\u003eDue to our skillfull developement with lot´s of tests we reached the goal to give you a filter which will do a perfect job to deliver amazing images. \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDaylight IR-imaging:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003econtrasty images with a great rendition of colors\u003c\/li\u003e\n\u003cli\u003eClear \"Wood-Effect\" images\u003c\/li\u003e\n\u003cli\u003eNot Hot-Spot from longer IR!\u003c\/li\u003e\n\u003cli\u003eShort exposure times, about the same as normal VIS-imaging\u003c\/li\u003e\n\u003cli\u003eperfect choice for Infrared-Videos\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-resolution Lunar and planetary imaging:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eshort Exposure times\u003c\/li\u003e\n\u003cli\u003eeffective reduction of Seeing\u003c\/li\u003e\n\u003cli\u003eenhanced contrast\u003c\/li\u003e\n\u003cli\u003eno ghosts and best sharpness due to blocking the longer IR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDeep-Sky Astrophotography of HII regions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ebest transmission of the H-alpha line at 656nm\u003c\/li\u003e\n\u003cli\u003eabout 40nm FWHM with astro-modified DSLRs\u003c\/li\u003e\n\u003cli\u003eamazing contrast under lightpolluted skies or moonlight\u003c\/li\u003e\n\u003cli\u003elow priced filter for getting started in H-alpha imaging\u003c\/li\u003e\n\u003cli\u003eeasy focussing using camera display plus LiveView!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGuiding for Astrophotography:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003einstalling the 642BP in front of your autoguider-camera dramatically improves guiding quality, as image-motion from one frame to the next is minimized.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003emore then 96% transmission for wavelengths of 642nm to 840nm\u003c\/li\u003e\n\u003cli\u003eblocking of wavelengths between 350nm and 630nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. 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If an EOS-Clip Filter is used in an MC modified DSLR you get tremendous results imaging the flora. The filter cuts off the part of the spectrum where Chlorophyll looks green and shows its high reflectivety in the near infrared. If trees are photographed in spring and summer under blue skies you get stunning images with white trees and clouds in front of a near black background.\u003c\/li\u003e\n\u003cli\u003eDarkens the background during twilight.\u003c\/li\u003e\n\u003cli\u003eImaging of bright planets, stars and comets by day.\u003c\/li\u003e\n\u003cli\u003eImaging of young stars in dust clouds and stellar nurseries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eWhen the seeing is very bad and the instrument is 10\" (250 mm) or larger, the Astronomik ProPlanet IR 807 may be the better choice.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik-proplanet-742_trans.png?v=1734562067\"\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156354895941,"sku":"8h00g3","price":110.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156354928709,"sku":"8h00g4","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156354961477,"sku":"8h00il","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156354994245,"sku":"8h00kc","price":180.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156355027013,"sku":"8h00lo","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156355059781,"sku":"8h11go","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156355092549,"sku":"8h00s6","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156355125317,"sku":"8h00xk","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156355158085,"sku":"8h11bx","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156355190853,"sku":"8h11l9","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156355223621,"sku":"8h11es","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156355256389,"sku":"8h00iy","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156355289157,"sku":"8h00au","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156355321925,"sku":"8h00gp","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156355354693,"sku":"8h00gq","price":145.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156355387461,"sku":"8h00g6","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156355420229,"sku":"8h00u9","price":205.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156355452997,"sku":"8h00ua","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156355485765,"sku":"8h00ub","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156355518533,"sku":"8h00uc","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156355551301,"sku":"8h00ud","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156355584069,"sku":"8h00ue","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156355616837,"sku":"8h00uf","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156355649605,"sku":"8h00ug","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156355682373,"sku":"8h00me","price":105.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156355715141,"sku":"8h11bb","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156355747909,"sku":"8h00ax","price":190.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_Planet-Pro-742_1_25-Inch_4.jpg?v=1731631931"},{"product_id":"astronomik-proplanet-807-filter","title":"Astronomik ProPlanet 807 filter","description":"\u003cp\u003e\u003cb\u003eIdeal addition to the Astronomik ProPlanet IR 742 for imaging the moon and planets, with telescopes larger then 10\" (250mm) when the seeing is poor.\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis filter is an ideal complement to the ProPlanet IR 742 for use with converted DSLR cameras, CCD cameras and Webcams. The effects of seeing are distinctly reduced. It is your entry into previously unknown dimensions of photography of the moon and the planets.\u003cbr\u003e\u003cbr\u003eThe ProPlanet IR 807 only allows infrared light with wavelengths of more than 807 nm to pass. In this wavelength range the effects of seeing are significantly lower than in the visible spectrum of the human eye. This allows much sharper images than are usually obtained from your device and location. Another advantage is that the sky background of advanced dawn is dark and even allows photography of planets and moon at daylight.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik ProPlanet IR 807 cuts off the visible part of the spectrum and allows the light of wavelengths longer then 807nm to pass. Due to this behavior the part of the spectrum that is most sensitive to bad seeing is rejected. This approach does a big improvement to the imaging of planets and the moon. The image is more steady than the image in the visible light.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe Astronomik ProPlanet IR 807 is designed to be an addition to the Astronomik ProPlanet IR 742, if the seeing is extremely bad and a larger telescope is used.\u003c\/li\u003e\n\u003cli\u003eFor most cameras the exposure times doubles, compared to the Astronomik ProPlanet IR 742 or imaging in visible light, if the Astronomik ProPlanet IR 807 is used.\u003c\/li\u003e\n\u003cli\u003eDarkens the background during twilight.\u003c\/li\u003e\n\u003cli\u003eImaging of bright planets, stars and comets by day.\u003c\/li\u003e\n\u003cli\u003eImaging of young stars in dust clouds and stellar nurseries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eIf the seeing is not so bad or if the telescope is smaller than 10\" (250mm) we recommend the use of the Astronomik ProPlanet IR 742.\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Unsuitable, the eye is insensitive at this spectrum\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Unsuitable, the eye is insensitive at this spectrum\u003c\/li\u003e\n\u003cli\u003eFilm photography: Unsuitable\u003c\/li\u003e\n\u003cli\u003eCCD photography: Reasonable, for special IR photography (as chlorophyll)\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good, for IR daylight photography, longer exposure time\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Very good, rejects problems with seeing, particularly with telescopes larger 250 mm aperture\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, rejects problems with seeing, particularly with telescopes larger 250 mm aperture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003emore then 97% transmission for wavelengths of 807nm to 1100nm\u003c\/li\u003e\n\u003cli\u003eblocking of wavelengths between 350nm and 790nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik-proplanet-807_trans.png?v=1731645074\"\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156356730949,"sku":"8h00g8","price":110.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156356763717,"sku":"8h00g9","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156356796485,"sku":"8h00im","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"Canon XT EOS APS-C Clip","offer_id":42156356829253,"sku":"8h00ko","price":180.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156356862021,"sku":"8h00lp","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156356894789,"sku":"8h11gp","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156356927557,"sku":"8h00s7","price":160.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156356960325,"sku":"8h00xl","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156356993093,"sku":"8h11by","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156357025861,"sku":"8h11la","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156357058629,"sku":"8h11et","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156357091397,"sku":"8h00iz","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156357124165,"sku":"8h00ay","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156357156933,"sku":"8h00gr","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156357189701,"sku":"8h00gs","price":145.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156357222469,"sku":"8h00h1","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156357255237,"sku":"8h00uh","price":205.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156357288005,"sku":"8h00ui","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156357320773,"sku":"8h00uj","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156357353541,"sku":"8h00uk","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156357386309,"sku":"8h00ul","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156357419077,"sku":"8h00um","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156357451845,"sku":"8h00un","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156357484613,"sku":"8h00uo","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156357517381,"sku":"8h00mf","price":105.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156357550149,"sku":"8h11bd","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156357582917,"sku":"8h00bb","price":190.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_Planet-Pro-807_1_25-Inch_4.jpg?v=1731645242"},{"product_id":"astronomik-oiii-12nm-ccd-filter","title":"Astronomik OIII 12nm CCD Filter","description":"\u003cp\u003eAll  Astronomik Filters are perfect for modern cameras, including both CMOS and CCD based cameras, allowing you to capture the very best images possible with your instruments. Sharpness, contrast and the absence of any reflections is guaranteed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eEach and every Astronomik filter has to pass a complex quality control process before being suitable for delivery to our customers. Each and every emission line filter is measured with a high-end Perkin-Elmer spectral-photometer to make sure that every single filter is up to the specifications published on our website.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eOn the back of each filter-box you will find a label that details the precise sensitivity and band pass measurements for that individual filter inside the box: You will see the max transmission and the recommended range of focal ratio were the filter will give you the best performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThus Astronomik O\u003cspan\u003eIII\u003c\/span\u003e CCD filter is a narrow band emission-line-filter for CCD photography. The filter lets the light of double ionized Oxygen of emission nebulae pass and blocks nearly the whole remainder of the spectrum where the CCD is sensitive. \u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe full width at half maximum (FWHM) of 12 nm is optimal suitable for common CCD cameras and allows the use of very fast optics The optimal aperture ratio for the use of the filter is 1:3 to 1:15 with apertures of more than 6\" (150mm). It should be noted that the filter has a transmission of up to 99%, which cannot be attained by stacking more narrow-band filters. A further note, which led to selecting the half width (FWHM), is the dark current of common CCD imagers. Exposures with a CCD cooled to -15°C are limited by the dark current of the CCD, even in large cities with a bright background.\u003cbr\u003e\u003cbr\u003eAnother advantage of the 12 nm filter is the better availability of guiding stars for cameras with a built-in-autoguider (SBIG). If you use a very strong filter like our H-alpha 6nm filter you often won’t find a usable guidestar.\u003cbr\u003e\u003cbr\u003eTogether with our other three Astronomik emission-line filters you can do great color images even from very light polluted places!\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik O\u003cspan\u003eIII\u003c\/span\u003e CCD increases the contrast between objects, in this case between the O\u003cspan\u003eIII\u003c\/span\u003e emission line and the skyglow background. Our Astronomik O\u003cspan\u003eIII\u003c\/span\u003e CCD completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play. The filter has a built-in IR-blocker up to 1150nm. You don’t need an additional IR-blocker with this filter.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWhen using the Astronomik O\u003cspan\u003eIII\u003c\/span\u003e CCD filter togther with the H-alpha, O\u003cspan\u003eIII\u003c\/span\u003e CCD and the S\u003cspan\u003eII\u003c\/span\u003e CCD filters you can obtain three-color images of emission line objects (gas nebulae) from locations with very strong light pollution. To do so, you would take an image in three different wavelengths, select each one as a color-channel in Photoshop and paste them together as one single color image.\u003c\/li\u003e\n\u003cli\u003eIf you plan to create color images from emission line data, our CLS CCD filter is a great choice for the Luminance channel\u003c\/li\u003e\n\u003cli\u003eThe O\u003cspan\u003eIII\u003c\/span\u003e CCD is also great for visual observation. If you plan to get filters for visual observation and for astrophotography get the CCD filter: You may use this filter visual as well as in front of you camera. The built-in IR-blocker doesn’t disturb visual observation but you need an additional IR-blocker if you want to use the visual filter with your camera.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik-oiii-ccd_trans.png?v=1731978903\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eFilm photography: It depends, very long exposure time\u003c\/li\u003e\n\u003cli\u003eCCD photography: Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Reasonable, if light pollution is a big problem and O\u003cspan\u003eIII\u003c\/span\u003e Objects are beeing observed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003etyp. 95% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003etyp. 95% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003efull width at half maximum 12nm\u003c\/li\u003e\n\u003cli\u003etransmission from 494nm to 506nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156362924101,"sku":"8h00c9","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156362956869,"sku":"8h00d0","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156362989637,"sku":"8h00ii","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156363022405,"sku":"8h00kn","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156363055173,"sku":"8h00lm","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156363087941,"sku":"8h11gh","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156363120709,"sku":"8h00s4","price":325.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156363153477,"sku":"8h00xi","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156363186245,"sku":"8h11ay","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156363219013,"sku":"8h11l2","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156363251781,"sku":"8h11en","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156363284549,"sku":"8h00bl","price":410.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156363317317,"sku":"8h00bm","price":495.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156363350085,"sku":"8h00gj","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156363382853,"sku":"8h00gk","price":295.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156363415621,"sku":"8h00d4","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156363448389,"sku":"8h11jq","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156363481157,"sku":"8h11a9","price":495.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156363710533,"sku":"8h00mj","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156363743301,"sku":"8h11bh","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156363776069,"sku":"8h00hn","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 1.25 inch (M28\/5)","offer_id":42156375507013,"sku":"8h11hy","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 2 inch (M28\/5)","offer_id":42156375539781,"sku":"8h11hz","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Canon EOS APS-C Clip","offer_id":42156375572549,"sku":"8h11hx","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Canon EOS XL Clip","offer_id":42156375605317,"sku":"8h11i1","price":640.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Canon EOS R XL Clip","offer_id":42156375638085,"sku":"8h11i0","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Sony Alpha 7 Clip","offer_id":42156375670853,"sku":"8h11i3","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Nikon XL","offer_id":42156375703621,"sku":"8h11i2","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Nikon Z XL","offer_id":42156375736389,"sku":"8h11lh","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 31mm","offer_id":42156375769157,"sku":"8h11hu","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 36mm","offer_id":42156375801925,"sku":"8h11hv","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 50mm","offer_id":42156375834693,"sku":"8h11hw","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR M52","offer_id":42156375867461,"sku":"8h11ne","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 27mm Unmounted","offer_id":42156375900229,"sku":"8h11n6","price":265.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_OIII-CCD-12nm_1_25-Inch.jpg?v=1731979347"},{"product_id":"astronomik-h-alpha-12nm-ccd-filter-copy","title":"Astronomik H-alpha 12nm CCD Filter","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cstrong\u003eThe Astronomik H-alpha filter is a narrow band filter for CCD photography. The filter lets the H-alpha light of emission nebulae pass and blocks nearly the whole remainder of the spectrum where the CCD is sensitive. \u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe full width at half-maximum (FWHM) of 12nm is optimized for the use with common CCD cameras and allows the use of very fast optics. It should be noted that the filter has a transmission of up to 99%.Another advantage of the 12nm filters is the availability of guiding stars for cameras with a built-in-autoguider (SBIG). If you use a very strong filter like our 6nm filter you often won’t find a usable guidestar.The range of application extends from 1:2.8 to 1:15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik H-alpha-CCD (12nm version) increases the contrast between objects, in this case between the H-alpha emission line and the skyglow background. Our Astronomik H-alpha-CCD (12nm version) completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWhen using the OIII CCD and the SII-CCD filters you can obtain three-color images of emission line objects (gas nebulae) from locations with very strong light pollution. To do so, you would take an image in three different wavelengths, select each one as a color-channel in Photoshop and paste them together as a color image.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik H-Alpha filters may NOT be used for solar observation.\u003c\/li\u003e\n\u003cli\u003eIf you plan to create color images from emission line data, our CLS-CCD filter is a great choice for the Luminance channel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik-ha13-ccd_trans.png?v=1731973235\"\u003e\u003c\/h4\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Unsuitable\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Unsuitable\u003c\/li\u003e\n\u003cli\u003eFilm photography: Reasonable, but very long exposure times\u003c\/li\u003e\n\u003cli\u003eCCD photography: Very good, huge contrast enhancement at H II-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good, reduced sensitivity in the H-alpha band\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, huge contrast enhancement at H II-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Very good, huge contrast enhancement at H II-emission nebulas\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Good, good contrast enhancement with bright objects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003etyp. transmission of more then 95% at the H-alpha line (656nm)\u003c\/li\u003e\n\u003cli\u003eComplete blocking from all disturbing wavelengths in the infrared\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156413943877,"sku":"8h0050","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156413976645,"sku":"8h0051","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156414009413,"sku":"8h00ih","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156414042181,"sku":"8h00kh","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156414074949,"sku":"8h00lf","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156414107717,"sku":"8h11gj","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M 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XL","offer_id":42156414828613,"sku":"8h11hs","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Nikon Z XL","offer_id":42156414861381,"sku":"8h11lg","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 31mm","offer_id":42156414894149,"sku":"8h11hk","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 36mm","offer_id":42156414926917,"sku":"8h11hl","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 50mm","offer_id":42156414959685,"sku":"8h11hm","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR M52","offer_id":42156414992453,"sku":"8h11nc","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 27mm Unmounted","offer_id":42156415025221,"sku":"8h11n7","price":265.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_H-alpha-CCD-12nm_1_25-Inch.jpg?v=1731978532"},{"product_id":"astronomik-sii-12nm-ccd-filter","title":"Astronomik SII 12nm CCD Filter","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cstrong\u003eThe Astronomik S\u003cspan\u003eII\u003c\/span\u003e-CCD filter is a narrow-band-filter for CCD photography.The filter lets the light of the ionized sulfur (S\u003cspan\u003eII\u003c\/span\u003e) pass, and blocks nearly the whole remainder of the visual spectrum as well as IR, in which the CCD is sensitive.\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe full width at half maximum (FWHM) of 12nm is optimal suitable for common CCD cameras and allows the use of very fast optics. The range of application extends from 1:2.8 to 1:15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play. It should be noted, that the filter has a transmission of up to 99%.\u003cbr\u003e\u003cbr\u003eAnother advantage of the 12nm filters is the good availability of guiding stars for cameras with a built-in-autoguider (SBIG). If you use a very strong filter like our 6nm filter you often won't find a usable guidestar.\u003cbr\u003e\u003cbr\u003eThe Astronomik S\u003cspan\u003eII\u003c\/span\u003e CCD filter increases the contrast between objects, in this case between those with S\u003cspan\u003eII\u003c\/span\u003e emission lines and the skyglow background. Also, our Astronomik S\u003cspan\u003eII\u003c\/span\u003e-CCD filter completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik S\u003cspan\u003eII\u003c\/span\u003e CCD increases the contrast between objects, in this case between the S\u003cspan\u003eII\u003c\/span\u003e emission line and the skyglow background. Our Astronomik S\u003cspan\u003eII\u003c\/span\u003e CCD completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow. Due to the high optical quality of the Astronomik H-alpha-CCD substrate you will see the same needle-sharp stars as you would from your regular telescope.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUsing the new H-alpha-CCD and the new S\u003cspan\u003eII\u003c\/span\u003e-CCD filters you can obtain three-color images of emission line objects (gas nebulae) from locations with very strong light pollution. To do so, you would take an image in three different wavelengths, select each one as a color-channel in Photoshop and paste them together as one single color image.\u003c\/li\u003e\n\u003cli\u003eIf you plan to create color images from emission line data, our CLS-CCD filter is a great choice for the Luminance channel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik-sii-ccd_trans.png?v=1731979788\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Unsuitable\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Unsuitable\u003c\/li\u003e\n\u003cli\u003eFilm photography: It depends, but very long exposure times\u003c\/li\u003e\n\u003cli\u003eCCD photography: Very good, huge contrast enhancement at S II-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Unsuitable\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, huge contrast enhancement at S II-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Very good, huge contrast enhancement at S II-emission nebulas\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Unsuitable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003etyp. transmission of 95% at both SII lines (671,7nm und 673,0nm)\u003c\/li\u003e\n\u003cli\u003eComplete blocking of all disturbing wavelength ranges in the infrared\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156417155141,"sku":"8h00d5","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156417187909,"sku":"8h00d6","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156417220677,"sku":"8h00ik","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156417253445,"sku":"8h00kq","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156417286213,"sku":"8h00lr","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156417318981,"sku":"8h11gl","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156417351749,"sku":"8h00s5","price":325.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156417384517,"sku":"8h00xj","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156417417285,"sku":"8h11az","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156417450053,"sku":"8h11l6","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156417482821,"sku":"8h11ep","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156417515589,"sku":"8h00bq","price":410.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156417548357,"sku":"8h00br","price":495.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156417581125,"sku":"8h00gw","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156417613893,"sku":"8h00gx","price":295.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156417646661,"sku":"8h00e0","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156417679429,"sku":"8h11ju","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156417712197,"sku":"8h11aa","price":495.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156417744965,"sku":"8h00mi","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156417777733,"sku":"8h11bg","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156417810501,"sku":"8h00ho","price":510.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 1.25 inch (M28\/5)","offer_id":42156417843269,"sku":"8h11i8","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 2 inch (M28\/5)","offer_id":42156417876037,"sku":"8h11i9","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Canon EOS APS-C Clip","offer_id":42156417908805,"sku":"8h11i7","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Canon EOS XL Clip","offer_id":42156417941573,"sku":"8h11ib","price":625.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Canon EOS R XL Clip","offer_id":42156417974341,"sku":"8h11ia","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Sony Alpha 7 Clip","offer_id":42156418007109,"sku":"8h11id","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Nikon XL","offer_id":42156418039877,"sku":"8h11ic","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR Nikon Z XL","offer_id":42156418072645,"sku":"8h11li","price":665.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 31mm","offer_id":42156418105413,"sku":"8h11i4","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 36mm","offer_id":42156418138181,"sku":"8h11i5","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 50mm","offer_id":42156418170949,"sku":"8h11i6","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR M52","offer_id":42156418203717,"sku":"8h11nd","price":595.0,"currency_code":"AUD","in_stock":true},{"title":"MaxFR 27mm Unmounted","offer_id":42156418236485,"sku":"8h11n5","price":265.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_SII-CCD-12nm_1_25-Inch.jpg?v=1731979927"},{"product_id":"astronomik-dark-filter","title":"Astronomik Dark Filter","description":"\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDark Filter 1.25 inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur 1,25\" (M28,5) filters fit perfectly in all 1,25\" (M28,5) filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.\u003c\/p\u003e\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDark Filter 2 inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur 2\" (M48) filters fit perfectly in all 2\" (M48) filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.\u003c\/p\u003e\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDark filter 31mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur 31mm filters fit perfectly in all 31mm filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik. The design with protective ring and blackened filter edges prevents stray light, the filters are mechanically protected and easier to handle.\u003c\/p\u003e\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDark filter 36mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur 36mm filters fit perfectly in all 36mm filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik. The design with protective ring and blackened filter edges prevents stray light, the filters are mechanically protected and easier to handle.\u003c\/p\u003e\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. 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Whether you're conducting photometric studies or enhancing your imaging setup, this filter is an indispensable tool for achieving accurate and high-quality results in ultraviolet astronomy.\u003c\/p\u003e","brand":"Chroma","offers":[{"title":"1.25 inch MOUNTED","offer_id":42161178476613,"sku":"CT-27050-1.25M","price":520.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch MOUNTED","offer_id":42161178509381,"sku":"CT-27050-2M","price":1260.0,"currency_code":"AUD","in_stock":true},{"title":"31mm UNMOUNTED","offer_id":42161178542149,"sku":"CT-27050-31D","price":520.0,"currency_code":"AUD","in_stock":true},{"title":"36mm UNMOUNTED","offer_id":42161178574917,"sku":"CT-27050-36D","price":640.0,"currency_code":"AUD","in_stock":true},{"title":"50mm UNMOUNTED","offer_id":42161178607685,"sku":"CT-27050-50D","price":1170.0,"currency_code":"AUD","in_stock":true},{"title":"50x50 mm UNMOUNTED","offer_id":42161178640453,"sku":"CT-27050-50X50","price":1300.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Chroma_Front.jpg?v=1762487244"},{"product_id":"chroma-b-bessell-filter","title":"CHROMA TECHNOLOGY B-Bessell Filter","description":"\u003cp\u003eThe Chroma Technology B-Bessell Filter is a precision-engineered astronomical filter tailored for photometric applications and astrophotography. 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Its ultra-narrow 3nm bandwidth isolates the H-alpha emission line at 656.3nm with exceptional precision, effectively eliminating light pollution and other unwanted wavelengths, even in challenging imaging conditions.\u003c\/p\u003e\n\u003cp\u003eEngineered with state-of-the-art coatings and superior optical quality, this filter minimizes halos, reflections, and ghosting, providing crisp, artifact-free images. Ideal for use with fast optical systems, the Chroma 3nm filter excels in revealing the intricate structures of emission nebulae and other faint targets. 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The FWHM of L-Para is 10nm for OIII (500.7nm) and H-Alpha (656.3nm) respectively. The transmittance of nebulae emission lines at are both greater than 85% in system with focal ratios of F2 and above. It effectively filters out mercury lamp, sodium lamp, and LED light pollution emission lines. At the same time, it has excellent contrast and anti-halo characteristics, allowing you to capture detailed and vivid nebula images. L-Para is suitable for both normal optical systems and fast optical systems, such as RASA and Hyperstar systems. 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