{"title":"Astronomik Camera Clip Filters","description":"\u003cp\u003eClip filters for compatible DSLR and mirrorless cameras. Check your camera model before choosing.\u003c\/p\u003e","products":[{"product_id":"astronomik-oiii-6nm-ccd-maxfr-clip-filter-nikon-z-xl-deep-sky-imaging","title":"Astronomik OIII 6nm CCD MaxFR Clip-Filter Nikon Z XL - Deep-Sky Imaging","description":"\u003ch1\u003eAstronomik OIII 6nm CCD MaxFR Clip-Filter Nikon Z XL\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emissionline filters for fast optical systems\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003cbr\u003e\nOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emission line filters give you the best quality of data: The best start material to be processed to an awesome final image!\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eFor 12nm MaxFR filters, this means unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at f\/1.4 as guaranteed.\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters, this means unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003e\nIf you have to observe from light-polluted sites (like most of us), imaging with narrowband-emission line filters is the best way to take great images, as all kinds of light pollution can be blocked very effectively! Normally, an H-alpha filter should be your first step into this amazing field of astrophotography. With a Narrowband H-alpha filter, you will be able to take deep and contrasting images even with very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003e\nIf you look at other astrophotographs, an H-alpha is the best choice for all nebulae glowing red! An OIII filter expands your imaging possibilities, as you are able to image all greenish\/bluish structures. Planetary nebulae and star-forming regions are great targets! The SII filter completes your HSO-set of filters. With these three filters, you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Astronomik filters are made with stress- and striae-free, optically polished glass. The filter itself is made of ultra-thin layers on this substrate!\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik Filters are parfocal! Due to the very small thickness-tolerance, the focal plane is not shifted when changing filters!\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Astronomik filters are made of up to 170 layers that are coated on both sides of the substrate. These layers form the filter itself and act as an Anti-Reflection Coating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Due to our coating technique, all Astronomik filters are highly scratch-resistant, not sensitive to moisture, and do not degrade when getting older. Every Astronomik filter will deliver its full performance and meet the specs at the point of shipping even after lots of years.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e All unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additional UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emission line filters with this coating!)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide range of available sizes\u003c\/strong\u003e from 1.25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n  \u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eDue to our outstanding coating technique, we offer a \u003cstrong\u003e10-year guarantee\u003c\/strong\u003e on all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especially the filters against light pollution and the narrowband-emission line filters will expand your imaging possibilities enormously! You are investing your money in an accessory that will work for many years in the same way it did when it was brand new. Due to our special coating technique, the filters do not degrade when getting older, and due to the new MFR coating, you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTypical questions asked by customers looking for Narrowband-Emission line Filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIf you have a camera with an extremely low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background, you will be able to expose longer and get deeper images! All stars are very tiny points, most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the Milky Way!\u003cbr\u003e\nIn summary, 12nm filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr\u003e\n6nm filters are the best choice for observing sites with extremely strong light pollution, cameras with low dark-current, and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe answer is simple: You don't have to expose longer, but you CAN! Due to the high transmission of approximately 100% at the center wavelength, nearly all emission line photons reach the sensor. The number of H-alpha-photons, for example, does not change significantly whether an H-alpha filter is installed or not. However, looking at the photons of other wavelengths that we do NOT want to record makes the effect of the filter clear: The combination of very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signals on the sensor! If you do an exposure of 30 seconds without any filters from a light-polluted urban observing site, your sky background might be very bright or even saturated. The same image taken with a Narrowband-Emission line filter will give you a perfect black background without any signal, and the signal from the object will be about the same. With this black background, you have the possibility to expose longer—probably 30 minutes instead—to record fainter structures!\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821320904881,"sku":"8H11LE","price":627.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-oiii-6nm-ccd-maxfr-clip-filter-nikon-z-xl-593019.jpg?v=1782295434"},{"product_id":"astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-eos-aps-c-narrowband-filter","title":"Astronomik H-alpha 12nm CCD MaxFR Clip-Filter EOS APS-C | Narrowband Filter","description":"\u003ch1\u003eAstronomik H-alpha 12nm CCD MaxFR Clip-Filter EOS APS-C\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emission line filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron’s RASA and Takahashi Epsilon Astrographs.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable for very fast focal ratios. The new Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select your filters with either 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR SIII-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003cbr\u003e\nOur new MaxFR filters are designed for fast optical systems, featuring MFR Coating technology that provides the best out-of-band blocking possible across the entire range of wavelengths from the UV to IR. The design ensures extremely high contrast, minimized stray light, no halos, and needle-sharp stars. Astronomik MFR filters give you the best quality data for post-processing into stunning final images.\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e12nm MaxFR filters:\u003c\/strong\u003e Usable from f\/1.7 to f\/8 with about 85% maximum transmission at f\/1.4.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e6nm MaxFR filters:\u003c\/strong\u003e Usable from f\/2.2 to f\/8 with about 90% maximum transmission at f\/2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters:\u003c\/strong\u003e\u003cbr\u003e\nWhen observing from light-polluted locations, narrowband-emission line filters are your best tool for capturing amazing deep-sky images. Using an H-alpha filter enables deep, high-contrast images even under heavy light pollution or during a full moon. H-alpha filters are ideal for imaging nebulae that glow red, while an OIII filter lets you capture greenish-blue structures like planetary nebulae. The SII filter completes the HSO set, allowing you to process images like the Hubble Space Telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e 12nm filters work down to f\/1.4, and 6nm filters down to f\/2.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Quality Substrate:\u003c\/strong\u003e Optically polished glass, made with stress- and striae-free materials.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eParfocal Filters:\u003c\/strong\u003e All Astronomik filters are parfocal, ensuring no shift in the focal plane when changing filters.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Highly scratch-resistant and unaffected by humidity or aging, these filters maintain their performance over many years.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e Full blocking of unwanted light across the UV to IR spectrum, so no additional UV\/IR blocker is needed.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e From 1.25\" up to 50mm x 50mm square filters.\u003c\/li\u003e\n    \u003cli\u003eComes in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e10-year guarantee\u003c\/strong\u003e on all filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWith Astronomik filters, you get the highest quality possible for astrophotography, especially when dealing with light pollution. These filters will continue to perform as well as new even after years of use. Thanks to the MFR coating, they are compatible with nearly any instrument you may use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFAQs:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\u003cstrong\u003eWhich is better, 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIf you have a camera with low dark current and effective cooling, 6nm filters offer better blocking of background light and enable deeper exposures. For DSLR and dark-current-limited cameras, 12nm filters are the better choice.\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\u003cstrong\u003eHow does using these filters affect exposure time?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWhile you don’t have to expose longer with a narrowband filter, you can do so to capture fainter structures. These filters block unwanted light while allowing nearly all emission line photons to pass through. By reducing the background signal, they enable longer exposures, potentially up to 30 minutes, to reveal more details.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821364519089,"sku":"8H11HN","price":241.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-eos-aps-c-965841.jpg?v=1782295347"},{"product_id":"astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-for-fast-systems","title":"Astronomik H-alpha 12nm CCD MaxFR Clip-Filter for Fast Systems","description":"\u003ch1\u003eAstronomik H-alpha 12nm CCD MaxFR Clip-Filter EOS XL\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emission line filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron’s RASA and the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable for very fast focal ratios. The Astronomik MaxFR series of narrowband emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select filters with either 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR SIII-CCD filter\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003cbr\u003e\nOur new MaxFR filters are designed to work perfectly with fast optical systems. The built-in MFR Coating technique provides the best out-of-band blocking possible across the entire range of wavelengths from UV up to IR! Enjoy extremely high contrast, minimized stray light, no halos, and needle-sharp stars. Astronomik MFR narrowband-emission line filters offer the best quality data to process into awesome final images!\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFor 12nm MaxFR filters: Unlimited usability from f\/1.7 to f\/8, and about 85% of maximum transmission at f\/1.4.\u003c\/li\u003e\n  \u003cli\u003eFor 6nm MaxFR filters: Unlimited usability from f\/2.2 to f\/8, with about 90% of maximum transmission at f\/2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters\u003c\/strong\u003e\u003cbr\u003e\nIf you observe from light-polluted areas, imaging with narrowband-emission line filters is an excellent way to take great images as most types of light pollution can be blocked effectively! Typically, an H-alpha filter should be your first step into astrophotography. With an H-alpha filter, you can capture deep and contrasting images even under heavy light pollution or a bright full moon! OIII filters allow imaging of greenish-blue structures, ideal for planetary nebulae and star-forming regions. The SII filter completes your HSO-set, allowing you to process images like those from the Hubble Space Telescope.\u003c\/p\u003e\n\n\u003ch4\u003eQuality Aspects of Astronomik MFR Narrowband-Emission Line Filters:\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMFR Coating: 12nm filters work for instruments down to f\/1.4, 6nm filters work down to f\/2.\u003c\/li\u003e\n  \u003cli\u003eHigh-Quality Substrate: Astronomik filters are made with stress- and striae-free, optically polished glass with ultra-thin layers.\u003c\/li\u003e\n  \u003cli\u003eParfocal Filters: All Astronomik filters are parfocal, ensuring no shift in the focal plane when changing filters.\u003c\/li\u003e\n  \u003cli\u003eDurability: Scratch-resistant, moisture-resistant, and guaranteed to meet specs even after years of use.\u003c\/li\u003e\n  \u003cli\u003eIntegrated Blocking: Blocks unwanted light in the entire spectral range from UV to IR, no additional UV\/IR-blocker needed.\u003c\/li\u003e\n  \u003cli\u003eAvailable Sizes: 1.25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n  \u003cli\u003eDelivered in a high-quality protection \u0026amp; storage box, and covered by a 10-year guarantee.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eFAQ - Narrowband-Emission Line Filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhich is the best FWHM, 12nm or 6nm?\u003c\/strong\u003e\u003cbr\u003e\nThere is no universal right or wrong answer. If you have a camera with extremely low dark current and effective cooling, 6nm filters offer better contrast and star reduction. 12nm filters are the best choice for DSLR cameras and dark-current-limited cameras, while 6nm filters are better for sites with extreme light pollution and weak objects requiring maximum contrast.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow much does exposure time increase?\u003c\/strong\u003e\u003cbr\u003e\nYou don’t have to expose for longer, but you can! The high transmission ensures nearly all emission line photons reach the sensor. However, blocking unwanted light allows you to expose longer if needed to capture faint structures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFilter Selection:\u003c\/strong\u003e\u003cbr\u003e\nChoose the matching size and FWHM for your setup to get the right filter for your needs.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821366943921,"sku":"8H11HR","price":376.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-eos-xl-331919.jpg?v=1782295353"},{"product_id":"astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-for-eos-r-xl","title":"Astronomik H-alpha 12nm CCD MaxFR Clip-Filter for EOS R XL","description":"\u003ch1\u003eAstronomik H-alpha 12nm CCD MaxFR Clip-Filter EOS R XL\u003c\/h1\u003e\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emission line filters for fast optical systems.\u003c\/h4\u003e\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003c\/strong\u003e\u003cbr\u003e6nm and 12nm FWHM\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e6nm and 12nm FWHM\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR SIII-CCD filter\u003c\/strong\u003e\u003cbr\u003e6nm and 12nm FWHM\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003cbr\u003eOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is extremely high contrast, minimized stray light, no halos, and needle-sharp stars. The Astronomik MFR narrowband-emission line filters give you the best quality of data: The best start material to be processed into an awesome final image!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eFor 12nm MaxFR filters, this means unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at f\/1.4 as guaranteed.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters, this means unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters\u003c\/strong\u003e\u003cbr\u003eIf you have to observe from light-polluted sites, imaging with narrowband-emission line filters is the best way to take great images, as all kinds of light pollution can be blocked very effectively! Normally, an H-alpha filter should be your first step into this amazing field of astrophotography. With a Narrowband H-alpha filter, you will be able to take deep and contrasting images even with very heavy light pollution or with the full moon high up in the sky!\u003c\/p\u003e\n\u003cp\u003eIf you look at other astrophotos, an H-alpha filter is the best choice for all nebulae glowing red! An OIII filter expands your imaging possibilities, as you can image all greenish\/blueish structures. Planetary nebulae and star-forming regions are great targets! The SII filter completes your HSO-set of filters. With these three filters, you are able to process your images like the ones from the Hubble Space Telescope!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Astronomik filters are made with stress- and striae-free, optically polished glass. The filter itself is made of ultra-thin layers on this substrate!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik Filters are parfocal! Due to the very small thickness tolerance, the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Astronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as an Anti-Reflection Coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Due to our coating technique, all Astronomik filters are highly scratch-resistant, not sensitive to moisture, and do not degrade when getting older. Every Astronomik filter will deliver its full performance and meet the specs at the point of shipping, even after many years.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e All unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additional UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emission line filters with this coating!)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide range of available sizes:\u003c\/strong\u003e From 1.25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDue to our outstanding coating technique, we offer a \u003cstrong\u003e10-year guarantee\u003c\/strong\u003e on all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especially the filters against light pollution and the narrowband-emission line filters will expand your imaging possibilities enormously! You are investing your money in an accessory that will work for many years in the same way it did when it was brand new. Due to our special coating technique, the filters do not degrade when getting older, and due to the new MFR coating, you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical questions asked by customers looking for Narrowband-Emission Line Filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe question \"Which full-width-half-maximum (FWHM) is the best?\" shows up very often. A general \"right\" or \"wrong\" answer does not make sense. We offer both series because they are both needed. If you have a camera with an extremely low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background, you will be able to expose longer and get deeper images! All stars are tiny points, and most faint stars do not show up anymore! This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the Milky Way. To put it short: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras. 6nm filters are the best choice for observing sites with extremely strong light pollution, cameras with low dark current, and when weak objects require the maximum contrast and star reduction possible!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis question is asked quite often, and the answer is simple: You don’t have to expose longer, but you MAY expose longer! Due to the high transmission of approximately 100% at the centre wavelength, nearly all emission line photons reach the sensor. So, the number of \"H-alpha-photons\" does not change significantly whether an H-alpha filter is installed or not. However, looking at the photons of other wavelengths, which we do NOT want to record, makes the effect of the filter clear: The combination of a very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signals on the sensor! If you do an exposure of 30 seconds without any filters from a light-polluted urban observing site, your sky background might be very bright or even saturated. The same image taken with a narrowband-emission line filter will give you a perfect black background without any signal, and the signal from the object will be about the same. With this black background, you have the possibility to expose longer - probably 30 minutes instead - to record fainter structures! So it’s not a \"must,\" it’s a \"can\".\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSelection of filters:\u003c\/strong\u003e\u003cbr\u003ePlease select the matching size for your setup and the FWHM to get a list of all available filters.\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821371629745,"sku":"8H11HQ","price":403.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-eos-r-xl-568584.jpg?v=1782295352"},{"product_id":"astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-for-sony-alpha-7-cameras","title":"Astronomik H-alpha 12nm CCD MaxFR Clip-Filter for Sony alpha 7 Cameras","description":"\u003ch1\u003eAstronomik H-alpha 12nm CCD MaxFR Clip-Filter Sony alpha 7\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emissionline filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and the Takahashi Epsilon Astrographs.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable for very fast focal ratios. The Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select filters either with 12nm or 6nm bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003cbr\u003eOur new MaxFR filters are designed to work perfectly with fast optical systems. The MFR Coating technique provides the best out-of-band blocking possible across the range of wavelengths from UV to IR. The new design offers \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. Astronomik MFR narrowband-emission line filters provide the best data quality for producing amazing final images.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12nm MaxFR filters:\u003c\/strong\u003e Usable from f\/1.7 to f\/8, with about 85% maximum transmission at f\/1.4 guaranteed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6nm MaxFR filters:\u003c\/strong\u003e Usable from f\/2.2 to f\/8, with about 90% maximum transmission at f\/2 guaranteed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters\u003c\/strong\u003e\u003cbr\u003e\nNarrowband-emission line filters are perfect for observing from light-polluted areas. H-alpha filters should be your first step into narrowband astrophotography, allowing deep, contrasting images even in severe light pollution or under a full moon. H-alpha filters are ideal for capturing red-glowing nebulae. OIII filters enable imaging of greenish-blue structures, such as planetary nebulae and star-forming regions. SII filters complete your HSO set, letting you process your images like those taken by the Hubble Space Telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm filters work on systems as fast as f\/1.4, and the 6nm filters down to f\/2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Made from stress- and striae-free, optically polished glass. The filters consist of ultra-thin layers on the substrate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik filters are parfocal, with thickness tolerances that prevent the focal plane from shifting when changing filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Coated on both sides with up to 170 layers for anti-reflection properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Scratch-resistant, moisture-proof, and designed to last for years without degradation. Every Astronomik filter will deliver full performance and meet specifications even after years of use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e Complete blocking from UV to IR, eliminating the need for additional UV \u0026amp; IR blockers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e From 1.25\" to 50mm x 50mm square filters.\u003c\/li\u003e\n\u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-year guarantee\u003c\/strong\u003e thanks to our outstanding coating technique.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou’ll get the highest quality with every Astronomik filter, enhancing your imaging possibilities. These filters provide long-lasting performance, working as well as when they were brand new. With our special coating, the filters do not degrade over time, and the MFR coating ensures compatibility with nearly all optical systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhich is the best FWHM for me – 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIt depends on your setup. For DSLR cameras and dark-current-limited cameras, 12nm filters are ideal. For extreme light pollution and cameras with low dark current, 6nm filters provide better contrast and star reduction, making them suitable for deep imaging.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow does exposure time change with narrowband filters?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eUsing narrowband filters doesn’t necessarily require longer exposure times, but you can extend exposure to record fainter details without unwanted light interference. This results in clearer images, even from light-polluted areas.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR Filters for Fast Optical Systems\u003c\/strong\u003e\u003cbr\u003eChoose the size and FWHM that fit your setup, and start capturing stunning deep-sky images today.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821373530289,"sku":"8H11HT","price":403.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-sony-alpha-7-959542.jpg?v=1782295364"},{"product_id":"astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-for-nikon-xl-cameras","title":"Astronomik H-alpha 12nm CCD MaxFR Clip-Filter for Nikon XL Cameras","description":"\u003ch1\u003eAstronomik H-alpha 12nm CCD MaxFR Clip-Filter Nikon XL\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emission line filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron’s RASA and the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR SIII-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emission line filters give you the best quality of data: The best starting material to be processed into an awesome final image!\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFor 12nm MaxFR filters:\u003c\/strong\u003e Usability from f\/1.7 to f\/8, with about 85% of maximum transmission at f\/1.4 guaranteed.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFor 6nm MaxFR filters:\u003c\/strong\u003e Usability from f\/2.2 to f\/8 with about 90% of maximum transmission at f\/2 guaranteed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters\u003c\/strong\u003e\u003cbr\u003e\nImaging with narrowband-emission line filters is the best way to take great images from light-polluted sites, as they effectively block all kinds of light pollution. Normally, an H-alpha filter should be your first step into narrowband astrophotography! With a Narrowband H-alpha filter, you will be able to take deep and contrasting images, even with very heavy light pollution or with the full moon in the sky! H-alpha is perfect for capturing nebulae glowing red! An OIII filter expands your imaging capabilities by allowing you to capture greenish\/blueish structures like planetary nebulae and star-forming regions. The SII filter completes your HSO filter set, letting you process your images like those from the Hubble Space Telescope.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm filters work on systems as fast as f\/1.4, and the 6nm filters as fast as f\/2.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Made from stress- and striae-free, optically polished glass. The filters consist of ultra-thin layers on the substrate.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik filters are parfocal, with thickness tolerances that prevent the focal plane from shifting when changing filters.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Coated on both sides with up to 170 layers for anti-reflection properties.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Scratch-resistant, moisture-proof, and designed to last for years without degradation. Every Astronomik filter will deliver full performance and meet specifications even after years of use.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e Complete blocking from UV to IR, eliminating the need for additional UV \u0026amp; IR blockers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e From 1.25\" to 50mm x 50mm square filters.\u003c\/li\u003e\n    \u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e10-year guarantee\u003c\/strong\u003e thanks to our outstanding coating technique.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou’ll get the highest quality with every Astronomik filter, enhancing your imaging possibilities. These filters provide long-lasting performance, working as well as when they were brand new. With our special coating, the filters do not degrade over time, and the MFR coating ensures compatibility with nearly all optical systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me—12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIt depends on your setup. For DSLR cameras and dark-current-limited cameras, 12nm filters are ideal. For extreme light pollution and cameras with low dark current, 6nm filters provide better contrast and star reduction, making them suitable for deep imaging.\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\u003cstrong\u003eHow does exposure time change with narrowband filters?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eUsing narrowband filters doesn’t necessarily require longer exposure times, but you can extend exposure to record fainter details without unwanted light interference. This results in clearer images, even from light-polluted areas.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR Filters for Fast Optical Systems\u003c\/strong\u003e\u003cbr\u003eChoose the size and FWHM that fit your setup, and start capturing stunning deep-sky images today.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821377790129,"sku":"8H11HS","price":403.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-nikon-xl-625269.jpg?v=1782295358"},{"product_id":"astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-for-nikon-z-xl","title":"Astronomik H-alpha 12nm CCD MaxFR Clip-Filter for Nikon Z XL","description":"\u003ch1\u003eAstronomik H-alpha 12nm CCD MaxFR Clip-Filter Nikon Z XL\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emissionline filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best starting material to be processed into an awesome final image!\u003cbr\u003e\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFor 12nm MaxFR filters, this means unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at f\/1.4 as guaranteed.\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters, this means unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003e\nIf you have to observe from light-polluted sites (like most of us), imaging with narrowband-emission line filters is the best way to take great images, as all kinds of light pollution can be blocked very effectively! Normally, an H-alpha filter should be your first step into this amazing field of Astrophotography! With a Narrowband H-alpha filter, you will be able to take deep and contrasting images even with very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003e\nIf you look at other Astrophotographs, an H-alpha filter is the best choice for all nebulae glowing red! An OIII filter expands your imaging possibilities, as you are able to image all greenish\/bluish structures. Planetary nebulae and star-forming regions are great targets! The SII filter completes your HSO-set of filters. With these three filters, you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm Filters can be used on all instruments down to f\/1.4, and the 6nm filters down to f\/2.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Astronomik filters are made with stress- and striae-free, optically polished glass. The filter itself is made of ultra-thin layers on this substrate!\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik Filters are parfocal! Due to the very small thickness-tolerance, the focal plane is not shifted when changing filters!\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Astronomik filters are made of up to 170 layers that are coated on both sides of the substrate. These layers form the filter itself and act as an Anti-Reflection Coating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Due to our coating technique, all Astronomik filters are highly scratch-resistant, not sensitive to moisture, and do not degrade when getting older. Every Astronomik filter will deliver its full performance and meet the specs at the point of shipping, even after many years.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e All unwanted light is blocked across the whole spectral range from UV up to the IR! (You will not need an additional UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emission line filters with this coating!)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide range of available sizes:\u003c\/strong\u003e From 1.25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n  \u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eDue to our outstanding coating technique, we offer a \u003cstrong\u003e10-year guarantee\u003c\/strong\u003e on all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especially the filters against light pollution and the narrowband-emission line filters will greatly expand your imaging possibilities! You are investing your money in an accessory that will work for many years in the same way it did when it was brand new. Due to our special coating technique, the filters do not degrade with age, and with the new MFR coating, you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTypical questions asked by customers looking for Narrowband-Emission line Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe question of which full-width-half-maximum (FWHM) is \"best\" often comes up in emails or when talking to customers at fairs. A general \"right,\" \"wrong,\" or \"best\" answer doesn't make sense. We wouldn't offer both series if they weren't needed.\u003cbr\u003e\nIf you have a camera with an extremely low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background, you will be able to expose longer and get deeper images! All stars are very tiny points, and most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the Milky Way!\u003cbr\u003e\nIn summary, 12nm filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr\u003e\n6nm filters are the best choice for observing sites with extremely strong light pollution, cameras with low dark-current, and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis question is asked often, and the answer is simple: You don't have to expose longer, but you CAN!\u003cbr\u003e\nDue to the high transmission of approximately 100% at the center wavelength, nearly all emission line photons reach the sensor. So the number of H-alpha-photons, for example, doesn't change significantly whether an H-alpha filter is installed or not. But looking at the photons of other wavelengths that we do NOT want to record, the effect of the filter becomes clear: The combination of very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signals on the sensor! If you do an exposure of 30 seconds without any filters from a light-polluted urban observing site, your sky background might be very bright or even saturated. The same image taken with a Narrowband-Emission line filter will give you a perfect black background without any signal, and the signal from the object will be about the same. With this black background, you have the possibility to expose longer—probably 30 minutes instead—to record fainter structures!\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSelection of filters:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nPlease select the matching size for your setup and the FWHM to get a list of all available filters.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821380149425,"sku":"8H11LG","price":403.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-12nm-ccd-maxfr-clip-filter-nikon-z-xl-844844.jpg?v=1782295359"},{"product_id":"astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-for-eos-aps-c-cameras","title":"Astronomik H-alpha 6nm CCD MaxFR Clip-Filter for EOS APS-C Cameras","description":"\u003ch1\u003eAstronomik H-alpha 6nm CCD MaxFR Clip-Filter EOS APS-C\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emission line filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and the Takahashi Epsilon Astrographs.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable for very fast focal ratios. The new Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines—oxygen (OIII), hydrogen (H-alpha), and sulfur (SII)—you may select filters with either 12nm or 6nm bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003cbr\u003e\nOur new MaxFR filters are designed to work perfectly with fast optical systems. The MFR Coating technique provides the best out-of-band blocking possible across the range of wavelengths from UV to IR. The new design offers \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. Astronomik MFR narrowband-emission line filters provide the best data quality for producing stunning final images.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12nm MaxFR filters:\u003c\/strong\u003e Usable from f\/1.7 to f\/8, with about 85% maximum transmission at f\/1.4 guaranteed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6nm MaxFR filters:\u003c\/strong\u003e Usable from f\/2.2 to f\/8, with about 90% maximum transmission at f\/2 guaranteed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters\u003c\/strong\u003e\u003cbr\u003e\nNarrowband-emission line filters are perfect for observing from light-polluted areas. H-alpha filters should be your first step into narrowband astrophotography, allowing deep, contrast-rich images even in severe light pollution or under a full moon. H-alpha filters are ideal for capturing red-glowing nebulae. OIII filters enable imaging of greenish-blue structures, such as planetary nebulae and star-forming regions. SII filters complete your HSO set, letting you process your images like those taken by the Hubble Space Telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e Use 12nm filters on systems as fast as f\/1.4, and 6nm filters as fast as f\/2.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Made from stress- and striae-free, optically polished glass. The filters consist of ultra-thin layers on the substrate.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik filters are parfocal, with thickness tolerances that prevent the focal plane from shifting when changing filters.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Coated on both sides with up to 170 layers for anti-reflection properties.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Scratch-resistant, moisture-proof, and designed to last for years without degradation. Every Astronomik filter will deliver full performance and meet specifications even after years of use.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e Complete blocking from UV to IR, eliminating the need for additional UV \u0026amp; IR blockers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e From 1.25\" to 50mm x 50mm square filters.\u003c\/li\u003e\n    \u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box.\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e10-year guarantee\u003c\/strong\u003e thanks to our outstanding coating technique.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou’ll get the highest quality with every Astronomik filter, enhancing your imaging possibilities. These filters provide long-lasting performance, working as well as when they were brand new. With our special coating, the filters do not degrade over time, and the MFR coating ensures compatibility with nearly all optical systems.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821394403505,"sku":"8H11DQ","price":358.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-eos-aps-c-814499.jpg?v=1782295377"},{"product_id":"astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-for-eos-xl-cameras","title":"Astronomik H-alpha 6nm CCD MaxFR Clip-Filter for EOS XL Cameras","description":"\u003ch1\u003eAstronomik H-alpha 6nm CCD MaxFR Clip-Filter EOS XL\u003c\/h1\u003e\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emission line filters for fast optical systems.\u003c\/h4\u003e\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable for very fast focal ratios. The new Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines—oxygen (OIII), hydrogen (H-alpha), and sulfur (SII)—you may select filters with either 12nm or 6nm bandwidth (FWHM)\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR SIII-CCD filter\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in, well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from UV to IR! Your advantage is \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emission line filters provide the best quality data, making them the ideal starting material for an awesome final image!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12nm MaxFR filters:\u003c\/strong\u003e Usable from f\/1.7 to f\/8, with about 85% maximum transmission at f\/1.4 guaranteed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6nm MaxFR filters:\u003c\/strong\u003e Usable from f\/2.2 to f\/8, with about 90% maximum transmission at f\/2 guaranteed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters\u003c\/strong\u003e\u003cbr\u003eImaging with narrowband-emission line filters is the best way to take great images from light-polluted sites, as they effectively block all kinds of light pollution. An H-alpha filter should be your first step into narrowband astrophotography! You can capture deep and contrast-rich images, even with heavy light pollution or a full moon in the sky. H-alpha is perfect for capturing nebulae glowing red! An OIII filter expands your imaging capabilities by allowing you to capture greenish\/blueish structures, like planetary nebulae and star-forming regions. The SII filter completes your HSO filter set, letting you process your images like those from the Hubble Space Telescope.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm filters work on systems as fast as f\/1.4, and the 6nm filters as fast as f\/2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Made from stress- and striae-free, optically polished glass. The filters consist of ultra-thin layers on the substrate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik filters are parfocal, with thickness tolerances that prevent the focal plane from shifting when changing filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Coated on both sides with up to 170 layers for anti-reflection properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Scratch-resistant, moisture-proof, and designed to last for years without degradation. Every Astronomik filter will deliver full performance and meet specifications even after years of use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e Complete blocking from UV to IR, eliminating the need for additional UV \u0026amp; IR blockers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e From 1.25\" to 50mm x 50mm square filters.\u003c\/li\u003e\n\u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-year guarantee\u003c\/strong\u003e thanks to our outstanding coating technique.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou’ll get the highest quality with every Astronomik filter, enhancing your imaging possibilities. These filters provide long-lasting performance, working as well as when they were brand new. With our special coating, the filters do not degrade over time, and the MFR coating ensures compatibility with nearly all optical systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me—12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt depends on your setup. For DSLR cameras and dark-current-limited cameras, 12nm filters are ideal. For extreme light pollution and cameras with low dark current, 6nm filters provide better contrast and star reduction, making them suitable for deep imaging.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow does exposure time change with narrowband filters?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUsing narrowband filters doesn’t necessarily require longer exposure times, but you can extend exposure to record fainter details without unwanted light interference. This results in clearer images, even from light-polluted areas.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR Filters for Fast Optical Systems\u003c\/strong\u003e\u003cbr\u003eChoose the size and FWHM that fit your setup, and start capturing stunning deep-sky images today.\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821395189937,"sku":"8H11F2","price":609.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-eos-xl-159695.jpg?v=1782295383"},{"product_id":"astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-for-eos-r-xl-cameras","title":"Astronomik H-alpha 6nm CCD MaxFR Clip-Filter for EOS R XL Cameras","description":"\u003ch1\u003eAstronomik H-alpha 6nm CCD MaxFR Clip-Filter EOS R XL\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emission line filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and the Takahashi Epsilon Astrographs.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable for very fast focal ratios. The Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines—oxygen (OIII), hydrogen (H-alpha), and sulfur (SII)—you may select filters with either 12nm or 6nm bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003cbr\u003e\nOur new MaxFR filters are designed to work perfectly with fast optical systems. The MFR Coating technique provides the best out-of-band blocking possible across the range of wavelengths from UV to IR. The new design offers \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. Astronomik MFR narrowband-emission line filters provide the best data quality for producing stunning final images.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12nm MaxFR filters:\u003c\/strong\u003e Usable from f\/1.7 to f\/8, with about 85% maximum transmission at f\/1.4 guaranteed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6nm MaxFR filters:\u003c\/strong\u003e Usable from f\/2.2 to f\/8, with about 90% maximum transmission at f\/2 guaranteed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters\u003c\/strong\u003e\u003cbr\u003e\nNarrowband-emission line filters are perfect for observing from light-polluted areas. H-alpha filters should be your first step into narrowband astrophotography, allowing deep, contrast-rich images even in severe light pollution or under a full moon. H-alpha filters are ideal for capturing red-glowing nebulae. OIII filters enable imaging of greenish-blue structures, such as planetary nebulae and star-forming regions. SII filters complete your HSO set, letting you process your images like those taken by the Hubble Space Telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e Use 12nm filters on systems as fast as f\/1.4, and 6nm filters as fast as f\/2.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Made from stress- and striae-free, optically polished glass. The filters consist of ultra-thin layers on the substrate.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik filters are parfocal, with thickness tolerances that prevent the focal plane from shifting when changing filters.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Coated on both sides with up to 170 layers for anti-reflection properties.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Scratch-resistant, moisture-proof, and designed to last for years without degradation. Every Astronomik filter will deliver full performance and meet specifications even after years of use.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e Complete blocking from UV to IR, eliminating the need for additional UV \u0026amp; IR blockers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e From 1.25\" to 50mm x 50mm square filters.\u003c\/li\u003e\n    \u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box.\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e10-year guarantee\u003c\/strong\u003e thanks to our outstanding coating technique.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou’ll get the highest quality with every Astronomik filter, enhancing your imaging possibilities. These filters provide long-lasting performance, working as well as when they were brand new. With our special coating, the filters do not degrade over time, and the MFR coating ensures compatibility with nearly all optical systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhich is the best FWHM for me – 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIt depends on your setup. For DSLR cameras and dark-current-limited cameras, 12nm filters are ideal. For extreme light pollution and cameras with low dark current, 6nm filters provide better contrast and star reduction, making them suitable for deep imaging.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow does exposure time change with narrowband filters?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eUsing narrowband filters doesn’t necessarily require longer exposure times, but you can extend exposure to record fainter details without unwanted light interference. This results in clearer images, even from light-polluted areas.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR Filters for Fast Optical Systems\u003c\/strong\u003e\u003cbr\u003eChoose the size and FWHM that fit your setup, and start capturing stunning deep-sky images today.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821395648689,"sku":"8H11F1","price":627.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-eos-r-xl-756622.jpg?v=1782295382"},{"product_id":"astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-for-sony-alpha-7","title":"Astronomik H-alpha 6nm CCD MaxFR Clip-Filter for Sony Alpha 7","description":"\u003ch1\u003eAstronomik H-alpha 6nm CCD MaxFR Clip-Filter Sony alpha 7\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emissionline filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003e There is an ever growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e MaxFR SIII-CCD filter\u003cbr\u003e\n6nm and 12nm FWHM\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed into an awesome final image!\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eFor 12nm MaxFR filters, this means unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at f\/1.4 as guaranteed.\u003c\/strong\u003e\n\u003c\/li\u003e\n\t\u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters, this means unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003e\nIf you have to observe from light polluted sites (like most of us), imaging with narrowband-emission line filters is the best way to take great images, as all kinds of light pollution can be blocked very effectively! Normally, an H-alpha filter should be your first step into this amazing field of Astrophotography! With a Narrowband H-alpha filter, you will be able to take deep and contrasting images even with very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003e\nIf you look at other astrophotographs, an H-alpha filter is the best choice for all nebula glowing red! An OIII filter expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulae and star-forming regions are great targets! The SII filter completes your HSO-set of filters. With these three filters, you are able to process your images like the ones from the Hubble Space Telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Astronomik filters are made with stress- and striae-free, optically polished glass. The filter itself is made of ultra-thin layers on this substrate!\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik Filters are Parfocal! Due to the very small thickness tolerance, the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Astronomik filters are made of up to 170 layers, which are coated on both sides of the substrate. These layers form the filter itself and act as an Anti-Reflection Coating.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Due to our coating technique, all Astronomik filters are highly scratch-resistant, not sensitive to moisture, and do not degrade with age. Every Astronomik filter will deliver its full performance and meet the specs at the point of shipping, even after many years.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e All unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additional UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emission line filters with this coating!)\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eWide range of available sizes:\u003c\/strong\u003e from 1.25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\t\u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\t\u003cli\u003eDue to our outstanding coating technique, we offer a \u003cstrong\u003e10-year guarantee\u003c\/strong\u003e on all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especially the filters against light pollution and the narrowband-emission line filters will enormously expand your imaging possibilities! You are investing your money in an accessory that will work for many years in the same way it did when it was brand new. Due to our special coating technique, the filters do not degrade with age, and with the new MFR coating, you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTypical questions asked by customers looking for Narrowband-Emission line Filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe question of which full-width-half-maximum (FWHM) is the \"best\" shows up often in emails or when talking to customers at fairs. A general \"right,\" \"wrong,\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr\u003e\nIf you have a camera with an extremely low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background, you will be able to expose longer and get deeper images! All stars become very tiny points, and most faint stars do not show up anymore! This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the Milky Way!\u003cbr\u003e\nIn short: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr\u003e\n6nm filters are the best choice for observing sites with extremely strong light pollution, cameras with low dark-current, and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis question is asked quite often, and the answer is very easy: You don't have to expose longer, but you MAY expose longer!\u003cbr\u003e\nDue to the high transmission of approximately 100% at the center wavelength, nearly all emission line photons reach the sensor. So the number of, for example, \"H-alpha-photons\" does not change significantly whether an H-alpha filter is installed or not. But looking at the photons of other wavelengths, which we do NOT want to record, makes the effect of the filter clear: The combination of very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signal on the sensor! If you do an exposure of 30 sec without any filters from a light-polluted urban observing site, your sky-background might already be very bright or even saturated. The same image taken with a Narrowband Emission line filter will give you a perfect black background without any signal, and the signal from the object will be about the same. With this black background, you have the possibility to expose longer—probably 30 min instead—to record fainter structures! So it’s not a \"must,\" it’s a \"can.\"\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSelection of filters:\u003c\/strong\u003e\u003cbr\u003e\nPlease select the matching size for your setup and the FWHM to get a list of all available filters.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821457711281,"sku":"8H11F4","price":627.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-sony-alpha-7-302445.jpg?v=1782295394"},{"product_id":"astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-for-nikon-xl-cameras","title":"Astronomik H-alpha 6nm CCD MaxFR Clip-Filter for Nikon XL Cameras","description":"\u003ch1\u003eAstronomik H-alpha 6nm CCD MaxFR Clip-Filter Nikon XL\u003c\/h1\u003e\n\u003ch4\u003eOptimized Narrowband Emission Line Filters for Fast Optical Systems\u003c\/h4\u003e\n\u003cp\u003eExperience unparalleled performance in deep-sky imaging with Astronomik’s MaxFR filters, designed specifically for fast optical systems like Celestron RASA and Takahashi Epsilon Astrographs. These filters are available in 6nm and 12nm bandwidths (FWHM), providing high-contrast imaging for H-alpha, OIII, and SII emission lines.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose MaxFR H-alpha, OIII, and SII CCD Filters?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable in 6nm and 12nm FWHM for maximum flexibility\u003c\/li\u003e\n\u003cli\u003eDesigned for use with fast optics (f\/1.7 and higher)\u003c\/li\u003e\n\u003cli\u003eHighest contrast with minimized stray light and needle-sharp stars\u003c\/li\u003e\n\u003cli\u003eIdeal for astrophotography of nebulae and planetary nebulae\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMaximum Contrast and High Transmission\u003c\/h3\u003e\n\u003cp\u003eAstronomik MaxFR filters use advanced MFR Coating technology to provide the best out-of-band blocking, from UV to IR. This technology ensures you experience no halos and maximum contrast, even in heavily light-polluted environments.\u003c\/p\u003e\n\n\u003ch3\u003eImaging with Narrowband Filters\u003c\/h3\u003e\n\u003cp\u003eWhen imaging from light-polluted areas, narrowband filters such as H-alpha and OIII allow you to block unwanted light pollution. H-alpha is perfect for capturing the red glow of nebulae, while OIII brings out the blue-green light of planetary nebulae. Pair these filters with an SII filter to create stunning, Hubble-style images of deep-sky objects.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures of Astronomik Filters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e Usable on instruments down to f\/1.4 for 12nm filters and f\/2 for 6nm filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptically Polished Glass:\u003c\/strong\u003e Stress-free and striae-free substrate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal:\u003c\/strong\u003e No refocusing needed when switching filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Scratch-resistant, moisture-proof, and long-lasting performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e Complete UV to IR blocking without additional filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e From 1.25\" to 50mm square\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhich FWHM should I choose, 6nm or 12nm?\u003c\/strong\u003e If you're imaging in heavily light-polluted areas, 6nm offers better contrast, while 12nm allows for more stars in your field of view.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eExpand your astrophotography capabilities with Astronomik MaxFR filters, designed to provide exceptional results even in the most challenging conditions. Perfect for imaging nebulae, planetary nebulae, and star-forming regions with stunning clarity.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821464199345,"sku":"8H11F3","price":627.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-nikon-xl-529309.jpg?v=1782295388"},{"product_id":"astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-nikon-z-xl","title":"Astronomik H-alpha 6nm CCD MaxFR Clip-Filter Nikon Z XL","description":"\u003ch1\u003eAstronomik H-alpha 6nm CCD MaxFR Clip-Filter Nikon Z XL\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emission line filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003eThere is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron's RASA or the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable for very fast focal ratios. The new Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR SII-CCD filter\u003cbr\u003e\n6nm and 12nm FWHM\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in, well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage with our new design is \u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e, and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emission line filters give you the best quality data: the best start material to be processed into an awesome final image!\u003cbr\u003e\n\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\u003cstrong\u003eFor 12nm MaxFR filters, this means unlimited usability from f\/1.7 to f\/8, and about 85% of the maximum transmission at f\/1.4 as guaranteed.\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters, this means unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emission Line Filters\u003c\/strong\u003e\u003cbr\u003e\nIf you have to observe from light-polluted sites (like most of us...), imaging with narrowband-emission line filters is the best way to take great images, as all kinds of light pollution can be effectively blocked! Normally, an H-alpha filter should be your first step into this amazing field of Astrophotography! With a Narrowband H-alpha filter, you will be able to take deep and contrasting images even with very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003e\nIf you look at other astrophotographs, an H-alpha filter is the best choice for all nebulae glowing red! An OIII filter expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulae and star-forming regions are great targets! The SII filter completes your HSO-set of filters. With these three filters, you can process your images like the ones from the Hubble Space Telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm filters can be used on all instruments down to f\/1.4, and the 6nm filters down to f\/2.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Astronomik filters are made with stress- and striae-free, optically polished glass. The filter itself is made of ultra-thin layers on this substrate!\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik Filters are Par focal! Due to the very small thickness-tolerance, the focal plane is not shifted when changing filters!\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Astronomik filters are made of up to 170 layers, which are coated on both sides of the substrate. These layers form the filter itself and act as an Anti-Reflection Coating.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Due to our coating technique, all Astronomik filters are highly scratch-resistant, not sensitive to moisture, and do not degrade with age. Every Astronomik filter will deliver full performance and meet the specs at the point of shipping, even after lots of years.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e All unwanted light is blocked in the entire spectral range from UV up to the IR! (You will not need an additional UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emission line filters with MFR coating!)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWide range of available sizes:\u003c\/strong\u003e from 1.25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n    \u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003eDue to our outstanding coating technique, we offer a \u003cstrong\u003e10-year guarantee\u003c\/strong\u003e on all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especially the filters against light pollution and the narrowband-emission line filters will expand your imaging possibilities enormously! You are investing your money in an accessory that will work in the same way it did when it was brand new. Due to our special coating technique, the filters do not degrade with age, and due to the new MFR coating, you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTypical questions asked by customers looking for Narrowband-Emission line Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe question of which full-width-half-maximum (FWHM) is the \"best\" shows up in emails or when talking to customers at fairs very often. A general \"right\" or \"wrong\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr\u003e\nIf you have a camera with an extremely low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background, you will be able to expose longer and get deeper images! All stars are tiny points, and most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the Milky Way!\u003cbr\u003e\nTo put it short: 12nm Filters are the right choice for all DSLRs and dark-current-limited cameras.\u003cbr\u003e\n6nm filters are the best choice for observing sites with extremely strong light pollution, cameras with low dark-current, and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis question is asked quite often, and the answer is very easy: You don't have to expose longer, but you MAY expose longer!\u003cbr\u003e\nDue to the high transmission of approximately 100% at the center wavelength, nearly all emission line photons reach the sensor. So the number of, for example, \"H-alpha-photons\" does not change significantly whether an H-alpha filter is installed or not. But looking at the photons of other wavelengths, which we do NOT want to record, makes the effect of the filter clear: The combination of very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signal on the sensor! If you do a 30-second exposure without any filters from a light-polluted urban observing site, your sky-background might already be very, very bright or even saturated. The same image taken with a Narrowband Emission line filter will give you a perfect black background without any signal, and the signal from the object will be about the same. With this black background, you have the possibility to expose longer - probably 30 min instead - to record fainter structures! So it’s not a \"must,\" it’s a \"can\".\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSelection of filters:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nPlease select the matching size for your setup and the FWHM to get a list of all available filters.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821464985777,"sku":"8H11LD","price":627.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-nikon-z-xl-411848.jpg?v=1782295390"},{"product_id":"astronomik-sii-12nm-ccd-maxfr-clip-filter-eos-aps-c-for-fast-optics","title":"Astronomik SII 12nm CCD MaxFR Clip-Filter EOS APS-C for Fast Optics","description":"\u003ch1\u003eAstronomik SII 12nm CCD MaxFR Clip-Filter EOS APS-C\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emissionline filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003e There is an ever growing demand for filters suitable for extremly fast optical systems like Celestron´s RASA the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha) and sulfur (SII) you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR SIII-CCD filter\u003cbr\u003e\n6nm and 12nm FWHM\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eextremly high contrast\u003c\/strong\u003e, minimized stray light,\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eno halos\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed to a awesome final image!\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eFor 12nm MaxFR filters this means unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at f\/1.4 as guaranteed.\u003c\/strong\u003e\u003cbr\u003e\n\t \u003c\/li\u003e\n\t\u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters this means unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003e\nIf you have to observe from light polluted sites (like most of us...), imaging with narrowband-emission line filters is the best way to take great images, as all kinds of light pollution can be blocked very effectively! Normally an H-alpha filter should be your first step into this amazing field of astrophotography! With a Narrowband H-alpha filter, you will be able to take deep and contrasting images even with very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003e\nIf you look at other astrophotographs, an H-alpha is the best choice for all nebula glowing red! An OIII filter expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebulae and star-forming regions are great targets! The SII filters complete your HSO set of filters. With these three filters, you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Astronomik filters are made with stress- and striae-free, optically polished glass. The filter itself is made of ultra-thin layers on this substrate!\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik Filters are parfocal! Due to the very small thickness tolerance, the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Astronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as an Anti-Reflection Coating.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDurability\u003c\/strong\u003e: Due to our coating technique all Astronomik filters are highly scratch resistant, not sensitive to moisture, and do not degrade with age. Every Astronomik filter will deliver its full performance and meet the specs at the point of shipping even after lots of years.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e All unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additional UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emission line filters with coating!)\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eWide range of available sizes\u003c\/strong\u003e from 1.25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\t\u003cli\u003eDelivered in a \u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\t\u003cli\u003eDue to our outstanding coating technique, we offer a \u003cstrong\u003e10-year guarantee\u003c\/strong\u003e on all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especially the filters against light pollution and the narrowband-emission line filters will expand your imaging possibilities enormously! You are investing your money in an accessory that will work for lots of years in the same way it did when it was brand new. Due to our special coating technique, the filters do not degrade with age, and due to the new MFR coating, you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTypical questions asked by customers looking for Narrowband-Emission line Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe question which full-width-half-maximum (FWHM) is the \"best\", shows up in Emails on our monitor or when talking to customers at fairs very often. A general \"right\" or \"wrong\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr\u003e\nIf you have a camera with an extremely low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background you will be able to expose longer and get deeper images! All stars are very tiny points, and most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the Milky Way!\u003cbr\u003e\nTo put it short: 12nm Filters are the right choice for all DSLR’s and dark-current limited cameras.\u003cbr\u003e\n6nm filters are the best choice for observing sites with extremely strong light pollution, cameras with low dark current, and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis question is asked quite often, and the answer is very easy: You don’t have to expose longer, but you MAY expose longer!\u003cbr\u003e\nDue to the high transmission of approximately 100% at the center wavelength, nearly all emission line photons reach the sensor. So the number of for example \"H-alpha-photons\" does not change significantly whether an H-alpha filter is installed or not. But looking at the photons of other wavelengths, which we do NOT want to record makes the effect of the filter clear: The combination of a very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signals on the sensor! If you do an exposure of 30 sec without any filters from a light-polluted urban observing site, your sky background might be already very bright or even saturated. The same image taken with a Narrowband Emission line filter will give you a perfect black background without any signal and the signal from the object will be about the same. With this black background, you have the possibility to expose longer -probably 30 min instead- to record fainter structures! So it’s not a \"must\", it’s a \"can\".\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSelection of filters:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nPlease select the matching size for your setup and the FWHM to get a list of all available filters.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821525967025,"sku":"8H11I7","price":241.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-sii-12nm-ccd-maxfr-clip-filter-eos-aps-c-781731.jpg?v=1782295459"},{"product_id":"astronomik-sii-12nm-ccd-maxfr-clip-filter-for-eos-r-xl","title":"Astronomik SII 12nm CCD MaxFR Clip-Filter for EOS R XL","description":"\u003ch1\u003eAstronomik SII 12nm CCD MaxFR Clip-Filter EOS R XL\u003c\/h1\u003e\n\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emissionline filters for fast optical systems.\u003c\/h4\u003e\n\n\u003ch4\u003e There is an ever growing demand for filters suitable for extremly fast optical systems like Celestron´s RASA the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfect matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha) and sulfur (SII) you may select your filters either with 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\n\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e MaxFR SIII-CCD filter\u003cbr\u003e\n6nm and 12nm FWHM\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\nOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is a \u003cstrong\u003eextremly high contrast\u003c\/strong\u003e, minimized stray light, \u003cstrong\u003eno halos\u003c\/strong\u003e and \u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed to a awesome final image!\u003cbr\u003e\n \u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eFor 12nm MaxFR filters this means a unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at a f\/1.4 as guaranteed.\u003c\/strong\u003e\u003cbr\u003e\n\t \u003c\/li\u003e\n\t\u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters this means a unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at a f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor maximum contrast the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003e\nIf you have to observe from light polluted sites (like most of us...), imaging with narrowband-emission line filters is the best way to take great images, as all kind of light pollution can be blocked very effective! Normally an H-alpha filter should be your first step into this amazing field of Astrophotography ! With an Narrowband H-alpha filter you will be able to take deep and contrasting images even with very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003e\nIf you look at other Astrophotosgraphs an H-alpha is the best choice for all nebula glowing red! An OIII filters expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebula and star forming regions are great targets! The SII filters completes your HSO-set of filters. With these three filters you are able to process your images like the ones from the Hubble space telescope!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e The 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e Astronomik filters are made with stress- and striae free, optically polished glass. The filter itself is made of ultra thin layers on this substrate!\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e All Astronomik Filters are Parfocal! Due to the very small thickness-tolerance the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Astronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as a Anti-Reflection Coating.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDurability\u003c\/strong\u003e: Due to our coating technique all Astronomik filters are highly scratch resistant, not sensitive to moisture and do not degrade when getting older. Every Astronomik filter will deliver it´s full performance and meet the specs at the point of shipping even after lot´s of years.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eIntegated Blocking:\u003c\/strong\u003e All unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additional UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emission line filters with coating!)\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eWide range of available sizes\u003c\/strong\u003e from 1,25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\t\u003cli\u003eDelivered in a\u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\t\u003cli\u003eDue to our outstanding coating technique we do offer a\u003cstrong\u003e10 year guarantee\u003c\/strong\u003e on all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especially the filters against light pollution and the narrowband-emission line filters will expand your imaging possibilities enormous! You are investing your money for an accessory which will work in lot´s of years in the same ways it did when it was brand new. Due to our special coating technique the filters do not degrade when getting older, and due to the new MFR coating you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTypical questions asked by customers looking for Narrowband-Emission line Filters:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe question which full-width-half-maximum (FWHM) is the \"best\", shows up on in Emails on our monitor or when talking to customers at fairs very often. A general \"right\" or \"wrong\" or \"best\" does not make any sense. We would not offer both series if they were not needed.\u003cbr\u003e\nIf you have a camera with an extremely low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background you will be able to expose longer and get deeper images! All stars are very tiny points, most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the milky way!\u003cbr\u003e\nTo put it short: 12nm Filters are the right choice for all DSLRs and dark-current limited cameras.\u003cbr\u003e\n6nm filters are the best choice for observing sites with extreme strong light pollution, cameras with low dark-current and when weak objects require the maximum contrast and star-reduction possible!\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis question is asked quite often, and the answer is very easy: You don have to expose longer, but you MAY expose longer!\u003cbr\u003e\nDue to the high transmission of approximately 100% at the center wavelength nearly all emission line photons reach the sensor. So the number of for example \"H-alpha-photons\" does not change significant weather a H-alpha filter is installed or not. But looking at the photons of other wavelength, which we do NOT want to record makes the effect of the filter clear: The combination of a very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signal on the sensor! If you do an exposure of 30 sec without any filters from a light polluted urban observing site, your sky-background might be already very, very bright or even saturated. The same image taken with an Narrowband -Emission line filter will give you a perfect black background without any signal and the signal from the object will be about the same. With this black background you have the possibility to expose longer -probably 30 min instead- to record fainter structures! So it´s not a \"must\", it´s a \"can\".\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSelection of filters:\u003c\/strong\u003e\u003cbr\u003e\nPlease select the matching size for your setup and the FWHM to get a list of all available filters.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821531603121,"sku":"8H11IA","price":403.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-sii-12nm-ccd-maxfr-clip-filter-eos-r-xl-340005.jpg?v=1782295466"},{"product_id":"astronomik-sii-12nm-ccd-maxfr-clip-filter-sony-alpha-7","title":"Astronomik SII 12nm CCD MaxFR Clip-Filter Sony alpha 7","description":"\u003ch1\u003eAstronomik SII 12nm CCD MaxFR Clip-Filter Sony alpha 7\u003c\/h1\u003e\n\u003ch4\u003eMaxFR Astronomik photographic narrowband-emissionline filters for fast optical systems.\u003c\/h4\u003e\n\u003ch4\u003e There is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron´s RASA and the Epsilon Astrographs made by Takahashi.\u003c\/h4\u003e\n\u003ch4\u003eOur novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emissionline filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha), and sulfur (SII), you may select your filters with either 12nm or 6nm Bandwidth (FWHM).\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR OIII-CCD filter\u003cbr\u003e\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaxFR H-alpha-CCD filter\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e6nm and 12nm FWHM\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e MaxFR SIII-CCD filter\u003cbr\u003e6nm and 12nm FWHM\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHighest transmission:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eOur new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well-known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eextremely high contrast\u003c\/strong\u003e, minimized stray light,\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eno halos\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eneedle-sharp stars\u003c\/strong\u003e. The Astronomik MFR narrowband-emissionline filters give you the best quality of data: The best start material to be processed to an awesome final image!\u003cbr\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor 12nm MaxFR filters, this means unlimited usability from f\/1.7 to f\/8 and about 85% of the maximum transmission at a f\/1.4 as guaranteed.\u003c\/strong\u003e\u003cbr\u003e \u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFor 6nm MaxFR filters, this means unlimited usability from f\/2.2 to f\/8 with about 90% of the maximum transmission at a f\/2 as guaranteed performance data.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor maximum contrast, the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImaging with Narrowband-Emissionline Filters\u003c\/strong\u003e\u003cbr\u003eIf you have to observe from light-polluted sites (like most of us...), imaging with narrowband-emission line filters is the best way to take great images, as all kinds of light pollution can be blocked very effectively! Normally an H-alpha filter should be your first step into this amazing field of Astrophotography! With a Narrowband H-alpha filter, you will be able to take deep and contrasting images even with very heavy light pollution or with the full moon high up in the sky!\u003cbr\u003eIf you look at other Astrophotographs, an H-alpha is the best choice for all nebula glowing red! An OIII filter expands your imaging possibilities, as you are able to image all greenish\/blueish structures. Planetary nebula and star-forming regions are great targets! The SII filter completes your HSO-set of filters. With these three filters, you are able to process your images like the ones from the Hubble Space Telescope!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuality aspects of the new Astronomik MFR narrowband-emission line filters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFR Coating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 12nm Filters can be used on all instruments down to f\/1.4, the 6nm filters down to f\/2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality substrate:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAstronomik filters are made with stress- and striae-free, optically polished glass. The filter itself is made of ultra-thin layers on this substrate!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal filters:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll Astronomik Filters are Parfocal! Due to the very small thickness tolerance, the focal plane is not shifted when changing filters!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAstronomik filters are made of up to 170 layers which are coated on both sides of the substrate. These layers form the filter itself and act as an Anti-Reflection Coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Due to our coating technique, all Astronomik filters are highly scratch-resistant, not sensitive to moisture, and do not degrade when getting older. Every Astronomik filter will deliver its full performance and meet the specs at the point of shipping even after lots of years.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Blocking:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll unwanted light is blocked in the whole spectral range from UV up to the IR! (You will not need an additional UV \u0026amp; IR-Blocker when imaging with any of our new narrowband-emission line filters with  coating!)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide range of available sizes\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom 1.25\" up to square 50mm x 50mm filters.\u003c\/li\u003e\n\u003cli\u003eDelivered in a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigh-quality protection \u0026amp; storage box\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDue to our outstanding coating technique, we offer a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e10-year guarantee\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon all of our filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou get the highest quality possible with every single Astronomik filter to be able to take perfect images with your instruments! Especially the filters against light pollution and the narrowband-emission line filters will expand your imaging possibilities enormously! You are investing your money in an accessory that will work in lots of years in the same way it did when it was brand new. Due to our special coating technique, the filters do not degrade when getting older, and due to the new MFR coating, you will be able to use the filter on nearly all instruments!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTypical questions asked by customers looking for Narrowband-Emission line Filters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhich is the best full-width-half-maximum for me? 12nm or 6nm?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe question of which full-width-half-maximum (FWHM) is the \"best\" shows up in emails and at fairs often. A general \"right\" or \"wrong\" or \"best\" does not make sense. We would not offer both series if they were not needed.\u003cbr\u003eIf you have a camera with an extremely low dark current and effective cooling, the 6nm filters will give you major advantages: Due to the stronger blocking of the background, you will be able to expose longer and get deeper images! All stars are tiny points, and most faint stars do not show up anymore! -This is a major advantage even for normal cameras, as you can take images of faint structures even in star-crowded regions of the Milky Way!\u003cbr\u003eTo put it short: 12nm Filters are the right choice for all DSLR's and dark-current limited cameras.\u003cbr\u003e6nm filters are the best choice for observing sites with extremely strong light pollution, cameras with low dark-current, and when weak objects require maximum contrast and star-reduction possible!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow much is exposure time increased?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis question is asked quite often, and the answer is very easy: You don’t have to expose longer, but you MAY expose longer!\u003cbr\u003eDue to the high transmission of approximately 100% at the center wavelength, nearly all emission line photons reach the sensor. So the number of, for example, \"H-alpha-photons\" does not change significantly whether an H-alpha filter is installed or not. But looking at the photons of other wavelengths, which we do NOT want to record, makes the effect of the filter clear: The combination of very good blocking of all unwanted light from UV up to the IR and the narrow bandwidth of the filters reduces all unwanted signals on the sensor! If you do an exposure of 30 sec without any filters from a light-polluted urban observing site, your sky-background might already be very bright or even saturated. The same image taken with a Narrowband -Emission line filter will give you a perfect black background without any signal and the signal from the object will be about the same. With this black background, you have the possibility to expose longer -probably 30 min instead- to record fainter structures! So it’s not a \"must\", it’s a \"can\".\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSelection of filters:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003ePlease select the matching size for your setup and the FWHM to get a list of all available filters.\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":41821536944305,"sku":"8H11ID","price":403.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-sii-12nm-ccd-maxfr-clip-filter-sony-alpha-7-439497.jpg?v=1782295467"},{"product_id":"astronomik-uhc-clip-filter-eos-aps-c-maximize-deep-sky-observing","title":"Astronomik UHC Clip-Filter EOS APS-C – Maximize Deep Sky Observing","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003ch1\u003eAstronomik UHC Clip-Filter EOS APS-C – Maximize Deep Sky Observing\u003c\/h1\u003e\n\n  \u003cp\u003e\u003cstrong\u003eThe Astronomik UHC is the go-to filter for visual observing and astrophotography.\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003cp\u003eUsing the Astronomik UHC filter allows you to see more stars and details in deep-sky objects compared to other filters. It provides nearly 100% transmission of O-III and H-beta radiation, making it perfect for deep-sky observations, while efficiently blocking artificial light pollution.\u003c\/p\u003e\n\n  \u003ch4\u003eMain Use\u003c\/h4\u003e\n\n  \u003cp\u003eThe Astronomik UHC filter offers high light transmission for enhanced views of deep-sky objects, even with small telescopes. It is optimized for telescopes with focal ratios between f\/4 and f\/15. The optical quality of the glass ensures sharp, distortion-free star images, even with high-performance instruments.\u003c\/p\u003e\n\n  \u003ch4\u003eSuitability\u003c\/h4\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Excellent, for all telescope apertures\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Very good, for telescopes with 100mm aperture or larger\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Excellent with an additional IR-block filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro-modified): Very good color balance and contrast\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Effective in light-polluted areas\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e95% transmission at 486nm (H-beta)\u003c\/li\u003e\n    \u003cli\u003e95% transmission at 496nm and 501nm (O-III)\u003c\/li\u003e\n    \u003cli\u003e95% transmission at 656nm (H-alpha)\u003c\/li\u003e\n    \u003cli\u003eOptimized for focal ratios from f\/3.5 to f\/10\u003c\/li\u003e\n    \u003cli\u003eScratch-resistant and resistant to humidity and aging\u003c\/li\u003e\n    \u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n    \u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eAstronomik UHC Clip-Filter EOS APS-C\u003c\/strong\u003e is designed for astrophotographers and observers looking to enhance their deep-sky experience. Its ability to block unwanted light while allowing maximum transmission makes it a must-have for capturing nebulae and galaxies in stunning detail.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055349895345,"sku":"8H00IE","price":125.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-clip-filter-eos-aps-c-842826.jpg?v=1782295488"},{"product_id":"astronomik-uhc-clip-filter-for-sony-alpha-7-high-contrast-viewing","title":"Astronomik UHC Clip-Filter for Sony Alpha 7 – High Contrast Viewing","description":"\u003ch1\u003eAstronomik UHC Clip-Filter Sony alpha 7\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC is the ideal filter for visual observing.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith the Astronomik UHC filter, you will enjoy more stars and finer details in deep-sky objects compared to filters from other manufacturers. The UHC (Ultra High Contrast) filter allows nearly 100% transmission of light from the O-III and H-beta lines. Though the H-alpha window is primarily for electronic devices, it still blocks scattered light and local artificial light pollution effectively, revealing rich detail in gas nebulae and planetary nebulae by darkening the sky background.\u003c\/p\u003e\n\u003ch4\u003eMain Use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik UHC filter provides excellent views of deep-sky objects, even with smaller telescopes. It offers high transmission for visual observations starting at 2\" (50mm) aperture and is optimized for telescope focal ratios between f\/4 and f\/15. Chromatic distortions and transmission losses typically seen in other filters are minimized, ensuring that you enjoy sharp, clear stars without reducing your telescope's optical performance.\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Suitable for all telescope apertures\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Best for telescopes from 100mm aperture\u003c\/li\u003e\n\u003cli\u003eCCD photography: Suitable with an additional IR-block filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Excellent with near-perfect color balance\u003c\/li\u003e\n\u003cli\u003eWebcam\/Video (Deep Sky): Good for handling light pollution\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 and 501nm (O-III)\u003c\/li\u003e\n\u003cli\u003e95% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003eIdeal for telescopes with focal ratios from f\/10 to f\/3.5\u003c\/li\u003e\n\u003cli\u003eComplete blocking of unwanted wavelengths\u003c\/li\u003e\n\u003cli\u003eScratch-resistant and humidity-resistant\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eDelivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055357038769,"sku":"8H00XC","price":214.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-clip-filter-sony-alpha-7-835950.jpg?v=1782295495"},{"product_id":"astronomik-uhc-clip-filter-eos-xl-enhanced-deep-sky-observation-filter","title":"Astronomik UHC Clip-Filter EOS XL – Enhanced Deep-Sky Observation Filter","description":"\u003ch1\u003eAstronomik UHC Clip-Filter EOS XL – Ultra High Contrast for Deep-Sky Observation\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC Clip-Filter offers exceptional contrast for deep-sky observation, providing more stars and details compared to other filters.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Astronomik UHC (Ultra High Contrast) filter allows near 100% transmission of O-III and H-beta lines, while blocking unwanted light pollution, making gas nebulae and planetary nebulae appear in stunning detail. While not intended for visual use of the H-alpha line, it’s highly effective for electronic devices.\u003c\/p\u003e\n\u003ch4\u003eMain Use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik UHC filter enhances deep-sky viewing, even for smaller telescopes starting at 2\" (50mm) aperture. Its high transmission levels make it suitable for telescope focal lengths from f\/4 to f\/15, with no chromatic distortion or transmission loss at extremely fast focal ratios. Thanks to the high optical quality of the filter glass, you’ll notice needle-sharp stars, just like using your telescope without a filter.\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Excellent for telescopes of all apertures\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Very good for telescopes from 100mm aperture\u003c\/li\u003e\n\u003cli\u003eFilm photography: Good, but requires long exposure times\u003c\/li\u003e\n\u003cli\u003eCCD photography: Effective with an additional IR-block filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good with enhanced contrast but color balance shifted\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Excellent with near-perfect color balance\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Good for combating light pollution\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 and 501nm (OIII)\u003c\/li\u003e\n\u003cli\u003e95% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003eOptimized for telescopes with focal ratios from f\/10 to f\/3.5\u003c\/li\u003e\n\u003cli\u003eComprehensive blocking of unwanted wavelengths\u003c\/li\u003e\n\u003cli\u003eIdeal all-round deep sky filter, even for small telescopes\u003c\/li\u003e\n\u003cli\u003eHighly resistant to humidity, scratches, and aging\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eDelivered in a durable, high-quality filter box\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055366377649,"sku":"8H00LS","price":197.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-clip-filter-eos-xl-331516.jpg?v=1782295495"},{"product_id":"astronomik-uhc-e-clip-filter-sony-alpha-7-enhance-deep-sky-viewing","title":"Astronomik UHC-E Clip-Filter Sony Alpha 7 – Enhance Deep-Sky Viewing","description":"\u003ch1\u003eAstronomik UHC-E Clip-Filter Sony alpha 7\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC-E filter is our budget filter for deep-sky observation of emission nebulae and comets under light polluted skies. It’s particularly suitable for small ’scopes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\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\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\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\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n\t\u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n\t\u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\n\u003cp\u003eIf you use a telescope with an aperture larger than 5\", we suggest the use of our standard UHC-filter because of its greater contrast enhancement capabilities. If you use a telescope larger than 8\", you can try our O\u003cspan\u003eIII\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efilter for even better results when observing specific nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eVisual observation (dark skies): Reasonable, an UHC filter is more suitable\u003c\/li\u003e\n\t\u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n\t\u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n\t\u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\t\u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n\t\u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n\t\u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\t\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\t\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cspan\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/span\u003e\u003c\/li\u003e\n\t\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\t\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\t\u003cli\u003e\u003cspan\u003etyp. 94% transmission at 656nm (H alpha)\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan\u003etransmission 465nm to 530nm and above 645nm \u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan\u003eFull width at half maximum 45nm\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cspan\u003eParfocal with other Astronomik filters\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\t\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\t\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\t\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\t\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","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055449215153,"sku":"8H00XD","price":143.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-clip-filter-sony-alpha-7-468285.jpg?v=1782295525"},{"product_id":"astronomik-uhc-e-clip-filter-eos-xl-for-deep-sky-observation","title":"Astronomik UHC-E Clip-Filter EOS XL for Deep-Sky Observation","description":"\u003ch1\u003eAstronomik UHC-E Clip-Filter EOS XL\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC-E filter is our budget filter for deep-sky observation of emission nebulae and comets under light polluted skies. It’s particularly suitable for small ’scopes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\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\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\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\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n\t\u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n\t\u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\n\u003cp\u003eIf you use a telescope with an aperture larger than 5\", we suggest the use of our standard UHC-filter because of its greater contrast enhancement capabilities. If you use a telescope larger than 8\", you can try our O\u003cspan\u003eIII\u003c\/span\u003e filter for even better results when observing specific nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eVisual observation (dark skies): Reasonable, an UHC filter is more suitable\u003c\/li\u003e\n\t\u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n\t\u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n\t\u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\t\u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n\t\u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n\t\u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\t\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\t\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n\t\u003cli\u003etyp. 95% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\t\u003cli\u003etyp. 95% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\t\u003cli\u003etyp. 94% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\t\u003cli\u003etransmission 465nm to 530nm and above 645nm\u003c\/li\u003e\n\t\u003cli\u003eFull width at half maximum 45nm\u003c\/li\u003e\n\t\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\t\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\t\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\t\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\t\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\t\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of the past\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055453114545,"sku":"8H00IN","price":98.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-clip-filter-eos-xl-307221.jpg?v=1782295525"},{"product_id":"astronomik-uhc-e-clip-filter-eos-aps-c-ideal-for-small-scopes","title":"Astronomik UHC-E Clip-Filter EOS APS-C – Ideal for Small Scopes","description":"\u003ch1\u003eAstronomik UHC-E Clip-Filter EOS APS-C – Perfect for Deep-Sky \u0026amp; Comets\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC-E Clip-Filter is a cost-effective option for deep-sky and comet observations under light-polluted skies, ideal for smaller telescopes.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe UHC-E filter boosts contrast for emission nebulae and comets while blocking streetlight pollution and airglow, making it highly effective for telescopes up to 5\" (125mm) in aperture.\u003c\/p\u003e\n\u003ch4\u003eMain Use\u003c\/h4\u003e\n\u003cp\u003eThis filter offers a full width at half maximum (FWHM) of 45nm, effectively blocking sodium and mercury vapor streetlights and enhancing the contrast between celestial objects and the night sky. While the contrast is slightly less compared to the Astronomik UHC filter, the UHC-E allows for more starlight, making it better suited for smaller telescopes. The filter also passes a carbon spectral line, allowing 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\u003eDSLR and camera photography under light-polluted skies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eIf you use a telescope larger than 5\", the Astronomik UHC filter offers greater contrast. For telescopes over 8\", the OIII filter provides even better results when observing certain nebulae.\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Reasonable, UHC filter is better\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Good, suitable for telescopes up to 125mm\u003c\/li\u003e\n\u003cli\u003eFilm photography: Good, but requires long exposure times\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Excellent color balance\u003c\/li\u003e\n\u003cli\u003eWebcam\/Video (Deep Sky): Very good for light-polluted areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e94% transmission at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003e95% transmission at 496nm and 501nm (OIII)\u003c\/li\u003e\n\u003cli\u003e94% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003eTransmission range: 465nm–530nm and above 645nm\u003c\/li\u003e\n\u003cli\u003eFull width at half maximum: 45nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eHighly resistant to humidity, scratches, and aging\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited: Does not reduce the optical performance of your telescope\u003c\/li\u003e\n\u003cli\u003eComes in a high-quality, durable filter box\u003c\/li\u003e\n\u003cli\u003eNew design since 2008 to eliminate halos and reflections\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055475396785,"sku":null,"price":98.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-clip-filter-eos-aps-c-360553.jpg?v=1782295518"},{"product_id":"astronomik-cls-ccd-filters","title":"Astronomik CLS CCD filters","description":"\u003cstyle\u003e\n  .dcs-cls {\n    --dcs-navy: #091525;\n    --dcs-gold: #c89524;\n    --dcs-text: #243449;\n    max-width: 1100px;\n    margin: 0 auto;\n    color: var(--dcs-text);\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.75;\n  }\n  .dcs-cls * { box-sizing: border-box; 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font-size: 15px; }\n  .dcs-cls .dcs-help {\n    background: #0c1c2f;\n    color: #e8eef6;\n    padding: 30px;\n    border-radius: 18px;\n    border-bottom: 4px solid var(--dcs-gold);\n  }\n  .dcs-cls .dcs-help h3 { color: #fff; }\n  .dcs-cls .dcs-help strong { color: #f0c96c; }\n  @media (max-width: 680px) {\n    .dcs-cls .dcs-grid,\n    .dcs-cls .dcs-two { grid-template-columns: 1fr; }\n    .dcs-cls .dcs-hero { padding: 27px 22px; }\n    .dcs-cls .dcs-panel,\n    .dcs-cls .dcs-note,\n    .dcs-cls .dcs-help { padding: 24px 20px; }\n    .dcs-cls .dcs-lines { gap: 7px; }\n    .dcs-cls .dcs-line { padding: 16px 6px; }\n    .dcs-cls .dcs-line strong { font-size: 21px; }\n    .dcs-cls .dcs-line span { font-size: 12px; }\n    .dcs-cls th,\n    .dcs-cls td { padding: 12px 10px; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"dcs-cls\"\u003e\n\n  \u003cdiv class=\"dcs-hero\"\u003e\n    \u003cp class=\"dcs-eyebrow\"\u003eASTRONOMIK · DEEP-SKY IMAGING\u003c\/p\u003e\n    \u003ch2\u003eLess skyglow.\u003cbr\u003eMore room for deep-sky detail.\u003c\/h2\u003e\n    \u003cp\u003eThe \u003cstrong\u003eAstronomik CLS CCD filter\u003c\/strong\u003e helps separate faint astronomical targets from a light-polluted background, suppressing selected unwanted wavelengths while transmitting important nebula emission lines.\u003c\/p\u003e\n    \u003cp\u003eWith \u003cstrong\u003eintegrated infrared blocking\u003c\/strong\u003e and compatibility with CMOS, CCD and DSLR cameras, it brings two useful imaging functions together in one optical filter.\u003c\/p\u003e\n    \u003cdiv class=\"dcs-tags\"\u003e\n      \u003cspan class=\"dcs-tag\"\u003eCMOS · CCD · DSLR\u003c\/span\u003e\n      \u003cspan class=\"dcs-tag\"\u003eIntegrated IR blocking\u003c\/span\u003e\n      \u003cspan class=\"dcs-tag\"\u003eH-alpha · H-beta · OIII\u003c\/span\u003e\n      \u003cspan class=\"dcs-tag\"\u003ef\/1.8–f\/15\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dcs-grid\"\u003e\n    \u003cdiv class=\"dcs-card dcs-blue\"\u003e\n      \u003cspan class=\"dcs-number\"\u003e01 \/ CONTRAST\u003c\/span\u003e\n      \u003ch3\u003eHelp your target stand out\u003c\/h3\u003e\n      \u003cp\u003eReduces selected wavelengths associated with traditional sodium and mercury lighting, improving the separation between your target and the background sky.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dcs-card dcs-green\"\u003e\n      \u003cspan class=\"dcs-number\"\u003e02 \/ TRANSMISSION\u003c\/span\u003e\n      \u003ch3\u003eKeep valuable nebula signal\u003c\/h3\u003e\n      \u003cp\u003eHigh transmission at H-alpha, H-beta and OIII retains key emission lines, with wider passbands than a UHC filter for less star dimming by comparison.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"dcs-card dcs-purple\"\u003e\n      \u003cspan class=\"dcs-number\"\u003e03 \/ INFRARED CONTROL\u003c\/span\u003e\n      \u003ch3\u003eIR blocking built in\u003c\/h3\u003e\n      \u003cp\u003eParticularly useful for infrared-sensitive cameras without their own effective IR-cut filter, including suitable modified DSLR and astronomy camera setups.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dcs-panel\"\u003e\n    \u003ch3\u003eDesigned around the light you want to capture\u003c\/h3\u003e\n    \u003cp\u003eThe CLS CCD transmits two broad spectral windows: \u003cstrong\u003e450–520nm\u003c\/strong\u003e and \u003cstrong\u003e640–690nm\u003c\/strong\u003e. These include the blue-green emission of H-beta and OIII, together with the deep-red H-alpha emission found in many nebulae.\u003c\/p\u003e\n    \u003cp\u003eIt selectively filters the incoming light to improve contrast where the unwanted skyglow falls within its blocked wavelengths.\u003c\/p\u003e\n\n    \u003cdiv class=\"dcs-lines\"\u003e\n      \u003cdiv class=\"dcs-line dcs-hb\"\u003e\n        \u003cstrong\u003e95%\u003c\/strong\u003e\n        \u003cspan\u003eH-beta\u003c\/span\u003e\n        \u003cspan\u003e486nm\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"dcs-line dcs-oiii\"\u003e\n        \u003cstrong\u003e95%\u003c\/strong\u003e\n        \u003cspan\u003eOIII\u003c\/span\u003e\n        \u003cspan\u003e496 \/ 501nm\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"dcs-line dcs-ha\"\u003e\n        \u003cstrong\u003e97%\u003c\/strong\u003e\n        \u003cspan\u003eH-alpha\u003c\/span\u003e\n        \u003cspan\u003e656nm\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp class=\"dcs-small\"\u003eManufacturer-stated transmission at the listed wavelengths. These values do not represent total system throughput.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dcs-two\"\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eA useful choice for…\u003c\/h3\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eEmission nebula imaging:\u003c\/strong\u003e retains important hydrogen and oxygen emission lines.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCMOS and CCD cameras:\u003c\/strong\u003e suitable for modern dedicated astronomy cameras, despite the CCD name.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eModified DSLRs:\u003c\/strong\u003e useful where the imaging system needs infrared blocking alongside light pollution suppression.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eUnmodified DSLRs:\u003c\/strong\u003e can improve contrast, with colour correction expected during processing.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eCLS CCD or standard CLS?\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eThe main difference is infrared blocking.\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp\u003eChoose the \u003cstrong\u003eCLS CCD\u003c\/strong\u003e when you need light pollution suppression and an IR-cut function in the same filter.\u003c\/p\u003e\n      \u003cp\u003eIf your camera or imaging train already blocks infrared effectively, the \u003cstrong\u003estandard CLS\u003c\/strong\u003e may be a more economical option.\u003c\/p\u003e\n      \u003cp\u003eCheck your camera specification: a protective sensor window does not necessarily provide IR blocking.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dcs-note\"\u003e\n    \u003ch3\u003eWhat to expect under your skies\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003ePerformance depends on your local lighting and chosen target.\u003c\/strong\u003e This filter is particularly relevant to the distinct emission lines of traditional sodium and mercury lamps. Broad-spectrum white LED lighting is harder to separate from astronomical signal.\u003c\/p\u003e\n    \u003cp\u003eGalaxies, reflection nebulae and star clusters emit across a broad spectrum, so some useful target light is also removed. Results vary, and colour calibration remains part of the imaging process.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dcs-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ccaption\u003eAstronomik CLS CCD — Technical Specifications\u003c\/caption\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eFilter function\u003c\/th\u003e\n          \u003ctd\u003eLight pollution suppression with integrated infrared blocking\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eCamera types\u003c\/th\u003e\n          \u003ctd\u003eCMOS, CCD and DSLR\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eTransmission bands\u003c\/th\u003e\n          \u003ctd\u003e450–520nm and 640–690nm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eH-beta transmission\u003c\/th\u003e\n          \u003ctd\u003eApproximately 95% at 486nm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eOIII transmission\u003c\/th\u003e\n          \u003ctd\u003eApproximately 95% at 496nm and 501nm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eH-alpha transmission\u003c\/th\u003e\n          \u003ctd\u003eApproximately 97% at 656nm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eFocal ratio range\u003c\/th\u003e\n          \u003ctd\u003ef\/1.8–f\/15\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eOptical glass thickness\u003c\/th\u003e\n          \u003ctd\u003e1mm for standard versions; XT versions differ\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eConstruction\u003c\/th\u003e\n          \u003ctd\u003eFinely polished optical glass with durable, scratch-resistant coatings\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eEnvironmental resistance\u003c\/th\u003e\n          \u003ctd\u003eCoatings resistant to humidity and ageing\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eIncluded accessory\u003c\/th\u003e\n          \u003ctd\u003eProtective filter storage box\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dcs-panel\"\u003e\n    \u003ch3\u003eChoose the fitting that matches your equipment\u003c\/h3\u003e\n    \u003cp\u003eThe CLS CCD range includes threaded, unmounted and camera-specific clip formats. \u003cstrong\u003eYour selected variant determines the fitting supplied.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp\u003eFor a filter wheel or drawer, check the required diameter, mounting style and clearance. For a clip filter, confirm compatibility with your exact camera body and lens. Threaded 1.25-inch and 2-inch versions require a matching accessory thread.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dcs-faq\"\u003e\n    \u003ch3\u003eYour questions answered\u003c\/h3\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDoes “CCD” mean it cannot be used with CMOS cameras?\u003c\/summary\u003e\n      \u003cp\u003eNo. The CLS CCD is suitable for both CMOS and CCD astronomy cameras, as well as DSLRs. The important checks are the filter fitting and the requirements of your imaging system.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need a separate infrared-cut filter?\u003c\/summary\u003e\n      \u003cp\u003eThe CLS CCD includes infrared blocking, so a separate filter is generally unnecessary solely for that function. Check your camera and optical system requirements before choosing your filter combination.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill it preserve the original colour balance?\u003c\/summary\u003e\n      \u003cp\u003eSelective filtration changes the wavelengths reaching your sensor. Allow for colour calibration during processing, particularly with an unmodified DSLR, rather than expecting unchanged colours straight from the camera.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill it remove all light pollution?\u003c\/summary\u003e\n      \u003cp\u003eNo. It suppresses selected wavelengths, so the improvement depends on the lighting around your site. It cannot completely remove broad-spectrum skyglow or replace darker observing conditions.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use it for visual observing?\u003c\/summary\u003e\n      \u003cp\u003eSuitable threaded 1.25-inch and 2-inch versions can be used visually. However, the standard CLS may offer better value because visual observing does not require the CCD version’s infrared blocking.\u003c\/p\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"dcs-help\"\u003e\n    \u003cp class=\"dcs-eyebrow\"\u003eDARK CLEAR SKIES\u003c\/p\u003e\n    \u003ch3\u003eThe right filter starts with your setup.\u003c\/h3\u003e\n    \u003cp\u003eUnsure which version to choose? Tell us your \u003cstrong\u003ecamera, telescope or lens, filter holder and preferred targets\u003c\/strong\u003e. We can help you assess whether the CLS CCD is a suitable match and identify the fitting you need.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"CLS CCD 2\"","offer_id":42072410423473,"sku":"8H00DP-1","price":179.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD Clip-Filter EOS APS-C","offer_id":42072410456241,"sku":"8H00DP-2","price":143.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD XT Clip-Filter EOS APS-C","offer_id":42072410489009,"sku":"8H00DP-3","price":161.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD Clip-Filter EOS XL","offer_id":42072410521777,"sku":"8H00DP-4","price":191.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD Clip-Filter EOS R XL","offer_id":42072410554545,"sku":"8H00DP-5","price":223.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD Clip-Filter EOS M","offer_id":42072410587313,"sku":"8H00DP-6","price":143.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD Clip-Filter Sony alpha 7","offer_id":42072410620081,"sku":"8H00DP-7","price":214.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD Clip-Filter Nikon XL","offer_id":42072410652849,"sku":"8H00DP-8","price":214.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD Clip-Filter Nikon Z XL","offer_id":42072410685617,"sku":"8H00DP-9","price":223.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD Clip-Filter Pentax K-1","offer_id":42072410718385,"sku":"8H00DP-10","price":223.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD T-Mount (M42 x 0.75)","offer_id":42072410751153,"sku":"8H00DP-11","price":170.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD SC Rear Cell (2\" \/ 24 TPI )","offer_id":42072410783921,"sku":"8H00DP-12","price":223.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD 31mm","offer_id":42072410816689,"sku":"8H00DP-13","price":116.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD 36mm","offer_id":42072410849457,"sku":"8H00DP-14","price":125.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD 50mm","offer_id":42072410882225,"sku":"8H00DP-15","price":206.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD M49","offer_id":42072410914993,"sku":"8H00DP-16","price":206.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD M52","offer_id":42072410947761,"sku":"8H00DP-17","price":214.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD M55","offer_id":42072410980529,"sku":"8H00DP-18","price":448.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD M58","offer_id":42072411013297,"sku":"8H00DP-19","price":448.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD M62","offer_id":42072411046065,"sku":"8H00DP-20","price":466.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD M67","offer_id":42072411078833,"sku":"8H00DP-21","price":475.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD M72","offer_id":42072411111601,"sku":"8H00DP-22","price":475.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD M77","offer_id":42072411144369,"sku":"8H00DP-23","price":475.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD 27mm unmounted","offer_id":42072411177137,"sku":"8H00DP-24","price":89.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD 42mm unmounted","offer_id":42072411209905,"sku":"8H00DP-25","price":143.0,"currency_code":"GBP","in_stock":true},{"title":"CLS CCD 50 x 50mm2 unmounted","offer_id":42072411242673,"sku":"8H00DP-26","price":214.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-cls-ccd-filters-181759.jpg?v=1782295254"}],"url":"https:\/\/www.darkclearskies.co.uk\/collections\/astronomik-clip.oembed","provider":"Dark Clear Skies ","version":"1.0","type":"link"}