{"title":"Astronomik Visual \u0026 Light-Pollution Filters","description":"\u003cp\u003eUHC, UHC-E, visual OIII, H-beta and CLS filters for observing and imaging.\u003c\/p\u003e","products":[{"product_id":"astronomik-uhc-filter-ultra-high-contrast-for-deep-sky-observing","title":"Astronomik UHC Filter – Ultra High Contrast for Deep-Sky Observing","description":"\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC is THE filter for visual observing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYou will enjoy using your Astronomik UHC filter because you will see more stars and more details in deep-sky objects compared to filters from other manufacturers.\u003c\/p\u003e\n\n\u003cp\u003eThe Astronomik UHC (Ultra High Contrast) filter allows the transmission of nearly 100% of the radiation from both O-III and H-beta lines. Though the second window for the H-alpha line is not intended for visual observing, it is important when used with electronic devices. All annoying, scattered light from other wavelengths, including local artificial light pollution, is filtered out effectively. With this strong blocking of the sky background, an unexpected wealth of detail becomes visible in gas nebulae and planetary nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\n\u003cp\u003eAstronomik UHC filters’ astounding high light transmission brings better views of deep-sky objects even to small telescopes! The high transmission of our optical glass filters means that enough light is available to allow successful visual observations with telescopes starting at 50mm aperture. Our Astronomik filters are optimized for use with telescope focal ratios from f\/4 to f\/15. Transmission losses and chromatic distortions that occur with other filters only appear with Astronomik filters when extremely bright aperture ratios of 1:2 or more come into play. Another major advantage of the Astronomik UHC filter is the high optical quality of the filter glass. When using Astronomik UHC filters, you will quickly notice the same needle-sharp stars you are familiar with from your astronomical instrument without any filter!\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Very good for telescopes of all apertures and high exit pupils\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Very good for telescopes with a 100 mm aperture or larger\u003c\/li\u003e\n    \u003cli\u003eFilm photography: Reasonable, but requires very long exposure times\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Good when used with an additional IR-block filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (original): Good, with color balance shifted but contrast enhanced\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro modified): Very good, with near-perfect color balance\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (MC modified): Good when used with an additional IR-block filter\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Good, especially if light pollution is a significant problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003eTypical 95% transmission at 486nm (H-beta)\u003c\/li\u003e\n    \u003cli\u003eTypical 95% transmission at 496nm (O-III)\u003c\/li\u003e\n    \u003cli\u003eTypical 95% transmission at 501nm (O-III)\u003c\/li\u003e\n    \u003cli\u003eTypical 95% transmission at 656nm (H-alpha)\u003c\/li\u003e\n    \u003cli\u003eOptimum position of transmission for telescopes with focal ratios from f\/10 to f\/3.5\u003c\/li\u003e\n    \u003cli\u003eEntire blocking of annoying wavelengths\u003c\/li\u003e\n    \u003cli\u003eIdeal all-around deep sky filter even for small telescopes\u003c\/li\u003e\n    \u003cli\u003eNot sensitive to humidity or aging\u003c\/li\u003e\n    \u003cli\u003eScratch-resistant!\u003c\/li\u003e\n    \u003cli\u003eExcellent carrier material – the optical performance of your telescope is not reduced by the filter in any way\u003c\/li\u003e\n    \u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n    \u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n    \u003cli\u003eCompletely resistant to high humidity, scratches, and aging effects\u003c\/li\u003e\n    \u003cli\u003eDiffraction limited – the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n    \u003cli\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055339638961,"sku":"8H0011","price":89.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-125-m285-filter-609186.jpg?v=1782295474"},{"product_id":"astronomik-uhc-2-m48-filter-high-contrast-for-deep-sky-observations","title":"Astronomik UHC 2\" M48 Filter – High Contrast for Deep Sky Observations","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch1\u003eAstronomik UHC 2\" M48 Filter – Enhance Deep Sky and Planetary Views\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC filter is perfect for improving your visual astronomy experience.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnlock more stars and hidden details in deep-sky objects with the Astronomik UHC (Ultra High Contrast) filter. It allows nearly 100% transmission of light from O-III and H-beta wavelengths while blocking out unwanted light pollution and scattered light. This makes gas and planetary nebulae more visible and detailed.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik UHC filter enhances deep-sky views, making it ideal even for small telescopes. Its high transmission rate ensures successful observations with telescopes starting at 2\" (50mm) apertures. Optimized for focal ratios between f\/4 and f\/15, the filter provides sharp, distortion-free images.\u003c\/p\u003e\n\u003ch4\u003eBest Uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (under dark skies): Great for all telescope sizes, ensuring excellent clarity.\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban areas): Best suited for telescopes with a 100mm or larger aperture.\u003c\/li\u003e\n\u003cli\u003eCCD photography: Works well when paired with an additional IR-block filter.\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro-modified): Provides near-perfect color balance for deep-sky images.\u003c\/li\u003e\n\u003cli\u003eWebcam\/Video (Deep Sky): Helps reduce light pollution interference in video observations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Details\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\u003eOptimized for telescopes with focal ratios from f\/10 to f\/3.5\u003c\/li\u003e\n\u003cli\u003eBlocks unwanted wavelengths of light\u003c\/li\u003e\n\u003cli\u003ePerfect for use with small telescopes\u003c\/li\u003e\n\u003cli\u003eDurable, scratch-resistant, and resistant to moisture 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\u003eComes in a high-quality, protective filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Astronomik UHC filter is ideal for both beginner and experienced astronomers seeking to improve their deep-sky observations. With excellent transmission and premium build quality, it ensures crystal-clear views and is a versatile addition to your telescope setup.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055339770033,"sku":"8H0012","price":179.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-2-m48-filter-802175.jpg?v=1782295474"},{"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-50mm-filter-enhance-deep-sky-observations","title":"Astronomik UHC 50mm Filter – Enhance Deep Sky Observations","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003ch1\u003eAstronomik UHC 50mm Filter – Enhanced Deep Sky Observing\u003c\/h1\u003e\n\n  \u003cp\u003eOur 50mm filters are compatible with all 50mm filter wheels from popular brands like ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian, and Atik. The protective ring design and blackened filter edges prevent stray light, keeping the filters safe and easy to handle.\u003c\/p\u003e\n\n  \u003cp\u003eThe filter's orientation in the filter wheel does not affect optical performance.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eThe Astronomik UHC is the ideal filter for visual observing.\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003cp\u003eWith the Astronomik UHC (Ultra High Contrast) filter, you will observe more stars and more details in deep-sky objects compared to other filters. This filter allows nearly 100% transmission of radiation from O-III and H-beta lines. It also blocks scattered light from artificial light pollution sources, allowing gas and planetary nebulae to appear in greater detail.\u003c\/p\u003e\n\n  \u003ch4\u003eMain Use\u003c\/h4\u003e\n\n  \u003cp\u003eThe high transmission of the Astronomik UHC filter improves views of deep-sky objects, even with small telescopes. The optical glass provides sharp, distortion-free images, and the filter is optimized for telescopes with focal lengths from f\/4 to f\/15. Even at faster f-ratios, it offers minimal transmission loss and chromatic distortion. You’ll see needle-sharp stars, just as you would with no filter in place!\u003c\/p\u003e\n\n  \u003ch4\u003eSuitability\u003c\/h4\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Excellent for telescopes of all apertures\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Ideal for telescopes 100mm and larger\u003c\/li\u003e\n    \u003cli\u003eFilm photography: Suitable, but with long exposure times\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Best used with an additional IR-block filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (original): Good, though color balance shifts slightly\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro-modified): Excellent, with near-perfect color balance\u003c\/li\u003e\n    \u003cli\u003eWebcam\/Video (Deep Sky): Works well if light pollution is an issue\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 (O-III)\u003c\/li\u003e\n    \u003cli\u003e95% transmission at 501nm (O-III)\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\u003eComplete blocking of unwanted wavelengths\u003c\/li\u003e\n    \u003cli\u003eIdeal all-round deep-sky filter for small telescopes\u003c\/li\u003e\n    \u003cli\u003eScratch-resistant, humidity-resistant, and long-lasting design\u003c\/li\u003e\n    \u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n    \u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n    \u003cli\u003eDiffraction-limited: the filter won’t reduce the optical performance of your telescope\u003c\/li\u003e\n    \u003cli\u003eIncludes a durable, high-quality storage box\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055371030705,"sku":"8H00A0","price":188.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-50mm-537832.jpg?v=1782295488"},{"product_id":"astronomik-uhc-36mm-filter-high-contrast-deep-sky-observation-filter-1","title":"Astronomik UHC 36mm Filter – High Contrast Deep-Sky Observation Filter","description":" \u003ch1\u003eAstronomik UHC 36mm Filter – High Contrast for Deep Sky Observation\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC 36mm filter is designed for deep-sky observation, providing unmatched contrast for nebulae and gas clouds.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis filter is compatible with 36mm filter wheels from ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian, and Atik. Its protective ring and blackened edges minimize stray light and ensure easy handling, while orientation in the filter wheel does not affect optical performance.\u003c\/p\u003e\n\n\u003cp\u003eGet clearer views of stars and deep-sky objects. The Astronomik UHC filter blocks unwanted light pollution and enhances contrast by transmitting nearly 100% of O-III and H-beta radiation, making it ideal for observing gas and planetary nebulae.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with all major 36mm filter wheels\u003c\/li\u003e\n  \u003cli\u003eAllows nearly 100% transmission of O-III and H-beta lines\u003c\/li\u003e\n  \u003cli\u003eBlocks scattered and artificial light for enhanced contrast\u003c\/li\u003e\n  \u003cli\u003eHigh optical quality, ensuring sharp star images\u003c\/li\u003e\n  \u003cli\u003eWorks best with telescopes of 50mm aperture or more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOptimal Use\u003c\/h3\u003e\n\u003cp\u003eOptimized for telescopes with apertures starting from 50mm, the Astronomik UHC filter works best at focal ratios between f\/4 and f\/15, providing high light transmission with no chromatic distortions. The filter delivers needle-sharp stars without reducing the telescope's performance.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVisual Observation in Dark Skies: Excellent for all apertures\u003c\/li\u003e\n  \u003cli\u003eVisual Observation in Urban Skies: Best for telescopes over 100mm\u003c\/li\u003e\n  \u003cli\u003eFilm Photography: Good, but requires long exposure times\u003c\/li\u003e\n  \u003cli\u003eCCD Photography: Works well with an IR-block filter\u003c\/li\u003e\n  \u003cli\u003eDSLR Photography (Original): Enhanced contrast but slight color shift\u003c\/li\u003e\n  \u003cli\u003eDSLR Photography (Astro Modified): Excellent with near-perfect color balance\u003c\/li\u003e\n  \u003cli\u003eWebcam\/Video (Planets): Not recommended\u003c\/li\u003e\n  \u003cli\u003eWebcam\/Video (Deep Sky): Effective in light-polluted areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Details\u003c\/h3\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\u003eEffective 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\u003eAll-purpose deep-sky filter, great for small telescopes\u003c\/li\u003e\n  \u003cli\u003eScratch-resistant and durable\u003c\/li\u003e\n  \u003cli\u003eOptically polished to maintain telescope performance\u003c\/li\u003e\n  \u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n  \u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n  \u003cli\u003eResistant to humidity, scratches, and aging\u003c\/li\u003e\n  \u003cli\u003eDelivered in a high-quality, protective filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055380992177,"sku":"8H00I1","price":125.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-36mm-571005.jpg?v=1782295481"},{"product_id":"astronomik-uhc-t-mount-m42x0-75-enhanced-deep-sky-viewing","title":"Astronomik UHC T-Mount (M42x0.75) – Enhanced Deep-Sky Viewing","description":"\u003ch1\u003eAstronomik UHC T-Mount (M42x0.75)\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC is THE filter for visual observing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWith the Astronomik UHC filter, you’ll see more stars and details in deep-sky objects than with filters from other manufacturers. It transmits nearly 100% of the O-III and H-beta lines, making it perfect for revealing details in gas and planetary nebulae by filtering out unwanted light pollution.\u003c\/p\u003e\n\n\u003ch4\u003eMain Use\u003c\/h4\u003e\n\n\u003cp\u003eAstronomik UHC filters bring better deep-sky views, even with small telescopes. Optimized for f\/4 to f\/15 focal ratios, they offer high transmission without color distortion, delivering sharp stars, especially in nebulae observations. This filter works well with scopes as small as 50mm aperture.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Excellent for all telescopes\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Excellent for telescopes from 100mm aperture\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Great when used with an additional IR-block filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro modified): Very good with near-perfect color balance\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Good, particularly 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\u003eBlocking of unwanted wavelengths for clearer views\u003c\/li\u003e\n    \u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n    \u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n    \u003cli\u003eScratch-resistant and durable\u003c\/li\u003e\n    \u003cli\u003eDiffraction-limited—won’t reduce telescope performance\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055392755889,"sku":"8H00IW","price":161.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-t-mount-m42x075-302957.jpg?v=1782295556"},{"product_id":"astronomik-uhc-sc-rear-cell-2-24tpi-deep-sky-filter","title":"Astronomik UHC SC Rear Cell (2'' \/ 24TPI) – Deep Sky Filter","description":"\u003ch1\u003eAstronomik UHC SC Rear Cell (2'' \/ 24TPI)\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC is the perfect filter for visual observing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEnjoy using the Astronomik UHC filter to see more stars and details in deep-sky objects than with other filters. The UHC filter allows nearly 100% transmission of radiation from both O-III and H-beta lines. Though the second window for the H-alpha line is not meant for visual observing, it’s important when used with an electronic device. Unwanted scattered light and artificial light pollution are filtered out effectively, revealing unexpected details in gas and planetary nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eMain Use\u003c\/h4\u003e\n\n\u003cp\u003eAstronomik UHC filters offer high light transmission, allowing enhanced views of deep-sky objects, even in small telescopes. Optimized for telescope focal ratios between f\/4 and f\/15, these filters minimize transmission losses and chromatic distortions. The filter’s optical quality ensures sharp, distortion-free stars, making it an excellent choice for visual astronomy.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eVisual observation (dark skies): Ideal for all telescope apertures and high exit pupil\u003c\/li\u003e\n\t\u003cli\u003eVisual observation (urban skies): Best for telescopes with 100mm+ apertures\u003c\/li\u003e\n\t\u003cli\u003eFilm photography: Fair, but requires 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, with enhanced contrast but shifted color balance\u003c\/li\u003e\n\t\u003cli\u003eDSLR photography (astro modified): Very good, with nearly perfect color balance\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): Not recommended\u003c\/li\u003e\n\t\u003cli\u003eWebcam \/ Video (Deep Sky): Good if light pollution is an issue\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eTypical 95% transmission at 486nm (H-beta)\u003c\/li\u003e\n\t\u003cli\u003eTypical 95% transmission at 496nm and 501nm (O-III)\u003c\/li\u003e\n\t\u003cli\u003eTypical 95% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\t\u003cli\u003eOptimized for telescopes with focal ratios from f\/10 to f\/3.5\u003c\/li\u003e\n\t\u003cli\u003eComplete blocking of unwanted wavelengths\u003c\/li\u003e\n\t\u003cli\u003eIdeal for all-round deep sky observation, even with small telescopes\u003c\/li\u003e\n\t\u003cli\u003eScratch-resistant and resistant to humidity and aging\u003c\/li\u003e\n\t\u003cli\u003eDoes not reduce the optical performance of your telescope\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\u003eComes in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055395705009,"sku":"8H00HZ","price":188.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-sc-rear-cell-2-24tpi-667467.jpg?v=1782295549"},{"product_id":"astronomik-uhc-m52-filter-ultra-high-contrast-for-deep-sky-viewing","title":"Astronomik UHC M52 Filter – Ultra High Contrast for Deep Sky Viewing","description":"\u003ch1\u003eAstronomik UHC M52 Filter\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Ultimate Filter for Visual Observing\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAstronomik UHC (Ultra High Contrast)\u003c\/strong\u003e filter is an exceptional choice for enhancing your deep-sky observations. You'll experience more stars and greater detail in nebulae, outperforming other filters on the market.\u003c\/p\u003e\n\n\u003cp\u003eThis filter allows nearly 100% transmission of O-III and H-beta radiation, making it ideal for visual observation and astrophotography, blocking out unwanted light pollution and improving contrast.\u003c\/p\u003e\n\n\u003ch4\u003eMain Use\u003c\/h4\u003e\n\n\u003cp\u003eThe Astronomik UHC filter delivers high transmission and superior performance, bringing out more detail even in smaller telescopes. Optimized for focal ratios from f\/4 to f\/15, this filter is ideal for deep-sky observation, blocking scattered light while maintaining sharp, crisp star images.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Excellent for all aperture telescopes.\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Great for telescopes 100mm and larger.\u003c\/li\u003e\n    \u003cli\u003eCCD and DSLR photography: Works well, especially with an IR-block filter.\u003c\/li\u003e\n    \u003cli\u003eDeep sky video: Suitable if light pollution is a concern.\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 (O-III).\u003c\/li\u003e\n    \u003cli\u003e95% transmission at 501nm (O-III).\u003c\/li\u003e\n    \u003cli\u003e95% transmission at 656nm (H-alpha).\u003c\/li\u003e\n    \u003cli\u003eGlass thickness: 1mm, parfocal with other Astronomik filters.\u003c\/li\u003e\n    \u003cli\u003eScratch-resistant and humidity-proof, built to last.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWith its high-quality optical glass and superior transmission, the Astronomik UHC filter will not compromise the performance of your telescope, offering long-lasting value and durability for astronomers of all levels.\u003c\/p\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055403471025,"sku":"8H11A6","price":188.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-m52-740515.jpg?v=1782295548"},{"product_id":"astronomik-uhc-31mm-filter-enhance-deep-sky-viewing-with-high-contrast","title":"Astronomik UHC 31mm Filter – Enhance Deep-Sky Viewing with High Contrast","description":"\u003ch1\u003eAstronomik UHC 31mm\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC is THE filter for visual observing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYou will enjoy using your Astronomik UHC filter because you will see more stars and more details in deep-sky-objects compared to using filters from all other manufacturers.\u003cbr\u003e\n\u003cbr\u003e\nThe Astronomik UHC (Ultra High Contrast) filter allows the transmission of nearly 100% of the radiation from both O-III and the H beta lines. Though the second window for the H-alpha-line is not intended for visual observing, it is important, if the filter is used with an electronic device. All annoying, scattered light from other wavelength sources, including local artificial light pollution, is reliably filtered out. With this strong blocking of the sky background an unexpected wealth of detail becomes visible for gas nebulae and planetary nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\n\u003cp\u003eAstronomik UHC filters’ astounding high light transmission brings better views of deep-sky-objects even to small telescopes! The high transmission of our optical glass filters means that enough light is available to allow successful visual observations with telescopes beginning at 2\" (50mm) aperture. Our Astronomik filters are optimized for use with telescope focal length f \/ ratios of f\/4 to f\/15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play. Another major advantage of our Astronomik UHC filter is the high optical quality of the filter glass. When using Astronomik UHC filters you will quickly notice the same needle-sharp stars which you are familiar with from your astronomical instrument without any filter!\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Very good, for telescopes of all apertures and high exit pupil\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Very good, for telescopes from 100 mm aperture\u003c\/li\u003e\n    \u003cli\u003eFilm photography: Reasonable, but very long exposure time\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (original): Good, colour balance shifted but contrast enhanced\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro modified): Very good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003etyp. 95% transmission at 486nm (H-beta)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 496nm (O III)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 501nm (O III)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 656nm (H alpha)\u003c\/li\u003e\n    \u003cli\u003eoptimum position of transmission for telescopes with focal ratios from f\/10 to f\/3.5\u003c\/li\u003e\n    \u003cli\u003eEntire Blocking of annoying wavelengths\u003c\/li\u003e\n    \u003cli\u003eIdeal All-round Deep Sky filter even for small telescopes\u003c\/li\u003e\n    \u003cli\u003eNot sensitive to humidity or aging\u003c\/li\u003e\n    \u003cli\u003eScratch-resistant!\u003c\/li\u003e\n    \u003cli\u003eExcellent carrier material. The optical performance of your telescope is not reduced by the filter in any way.\u003c\/li\u003e\n    \u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n    \u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n    \u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n    \u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n    \u003cli\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055409828017,"sku":"8H00I0","price":103.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-31mm-860576.jpg?v=1782295480"},{"product_id":"astronomik-uhc-e-1-25-filter-boost-contrast-for-small-telescopes","title":"Astronomik UHC-E 1.25'' Filter – Boost Contrast for Small Telescopes","description":"\u003ch1\u003eAstronomik UHC-E 1.25'' (M28.5)\u003c\/h1\u003e\n\n\u003cp\u003eOur 1.25\" (M28.5) filters fit perfectly in all 1.25\" (M28.5) filter wheels of brands like ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian, and Atik.\u003c\/p\u003e\n\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\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 for emission nebulae and comets, blocking the light from typical streetlights and 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 vapor) as well as airglow. This increases contrast between your target and the night sky. The contrast enhancement is less than that of the Astronomik UHC filter, but more starlight is transmitted, making it better suited for smaller telescopes. Since 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 using our standard UHC-filter because of its greater contrast enhancement capabilities. If you use a telescope larger than 8\", you can try our OIII 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, UHC filter is more suitable\u003c\/li\u003e\n\t\u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125mm 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, color balance is near perfect\u003c\/li\u003e\n\t\u003cli\u003eDSLR photography (astro modified): Good, color 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\u003eTypical 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n\t\u003cli\u003eTypical 95% transmission at 496nm (OIII)\u003c\/li\u003e\n\t\u003cli\u003eTypical 95% transmission at 501nm (OIII)\u003c\/li\u003e\n\t\u003cli\u003eTypical 94% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\t\u003cli\u003eTransmission from 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 ship filters with a completely new design. Any kind of halo or strange reflection is a thing of the past\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055428702385,"sku":"8H00F0","price":58.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-125-m285-496302.jpg?v=1782295502"},{"product_id":"astronomik-uhc-e-t-mount-m42x0-75-ideal-for-deep-sky-observation","title":"Astronomik UHC-E T-Mount (M42x0,75) – Ideal for Deep-Sky Observation","description":"\u003ch1\u003eAstronomik UHC-E T-Mount (M42x0,75)\u003c\/h1\u003e\n\n\u003cp\u003eOur 1,25\" (M28,5) filters fit perfectly in all 1,25\" (M28,5) filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.\u003c\/p\u003e\n\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\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    \u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n    \u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n    \u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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    \u003cli\u003eVisual observation (dark skies): Reasonable, an UHC filter is more suitable\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n    \u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n    \u003cli\u003etyp. 94% transmission at 656nm (H alpha)\u003c\/li\u003e\n    \u003cli\u003etransmission 465nm to 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\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n    \u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n    \u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n    \u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055429980337,"sku":"8H001X","price":103.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-t-mount-m42x075-458993.jpg?v=1782295542"},{"product_id":"astronomik-uhc-e-2-m48-filter-enhance-deep-sky-observation-1","title":"Astronomik UHC-E 2\" (M48) Filter – Enhance Deep-Sky Observation","description":"\u003ch1\u003eAstronomik UHC-E 2'' (M48)\u003c\/h1\u003e\n\n\u003cp\u003eOur 1,25\" (M28,5) filters fit perfectly in all 1,25\" (M28,5) filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.\u003c\/p\u003e\n\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\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\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    \u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n    \u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n    \u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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    \u003cli\u003eVisual observation (dark skies): Reasonable, an UHC filter is more suitable\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n    \u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n    \u003cli\u003etyp. 94% transmission at 656nm (H alpha)\u003c\/li\u003e\n    \u003cli\u003etransmission 465nm to 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\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n    \u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n    \u003cli\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n    \u003cli\u003eSince 2008, we 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":42055440269489,"sku":null,"price":112.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-2-m48-248227.jpg?v=1782295503"},{"product_id":"astronomik-uhc-e-sc-rear-cell-2-24tpi-enhance-deep-sky-observations","title":"Astronomik UHC-E SC Rear Cell 2''\/24TPI – Enhance Deep-Sky Observations","description":"\u003ch1\u003eAstronomik UHC-E SC Rear Cell (2'' \/ 24TPI)\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    \u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n    \u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n    \u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 OIII filter for even better results when observing specific nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Reasonable, a UHC filter is more suitable\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n    \u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 496nm (OIII)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 501nm (OIII)\u003c\/li\u003e\n    \u003cli\u003etyp. 94% transmission at 656nm (H alpha)\u003c\/li\u003e\n    \u003cli\u003eTransmission 465nm to 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\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n    \u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n    \u003cli\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n    \u003cli\u003eSince 2008, we 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":42055440728241,"sku":"8H00BT","price":125.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-sc-rear-cell-2-24tpi-898649.jpg?v=1782295541"},{"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-m52-filter-enhanced-contrast-for-small-telescopes","title":"Astronomik UHC-E M52 Filter – Enhanced Contrast for Small Telescopes","description":"\u003ch1\u003eAstronomik UHC-E M52\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\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\u003cp\u003e \u003c\/p\u003e\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\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik UHC-E filter provides a FWHM of 45nm and blocks the light of typical streetlights (e.g. sodium and mercury vapour) as well as airglow. Thus it increases contrast between your target and the night sky. The contrast enhancement is less than that of the Astronomik UHC filter, but at the same time the transmitted amount of starlight is greater. It's therefore better suited to smaller telescopes. As the UHC-E filter passes a spectral line of Carbon (due to the higher FWHM) it opens up the possibility of comet observation.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n\u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n\u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\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\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Reasonable, an UHC filter is more suitable\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n\u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003etyp. 95% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003etyp. 95% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003etyp. 94% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003etransmission 465nm to 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\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008, we 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","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":42055451050161,"sku":"8H00VM","price":116.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-m52-808399.jpg?v=1782295534"},{"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-50mm-filter-boost-deep-sky-observation","title":"Astronomik UHC-E 50mm Filter – Boost Deep-Sky Observation","description":"\u003ch1\u003eAstronomik UHC-E 50mm\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 the 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  \u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n  \u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n  \u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 OIII filter for even better results when observing specific nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVisual observation (dark skies): Reasonable, a UHC filter is more suitable\u003c\/li\u003e\n  \u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n  \u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n  \u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n  \u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n  \u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n  \u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n  \u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n  \u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n  \u003cli\u003etyp. 95% transmission at 496nm (OIII)\u003c\/li\u003e\n  \u003cli\u003etyp. 95% transmission at 501nm (OIII)\u003c\/li\u003e\n  \u003cli\u003etyp. 94% transmission at 656nm (H alpha)\u003c\/li\u003e\n  \u003cli\u003eTransmission 465nm to 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\u003eCompletely resistant against high humidity, scratches, and aging effects\u003c\/li\u003e\n  \u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n  \u003cli\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n  \u003cli\u003eSince 2008 we 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":42055456751793,"sku":"8H00BU","price":116.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-50mm-581899.jpg?v=1782295517"},{"product_id":"astronomik-uhc-e-36mm-filter-deep-sky-observation-for-small-telescopes","title":"Astronomik UHC-E 36mm Filter Deep-Sky Observation for Small Telescopes","description":"\u003ch1\u003eAstronomik UHC-E 36mm\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 telescopes.\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\u003cul\u003e\n    \u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n    \u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n    \u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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-III filter for even better results when observing specific nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Reasonable, a UHC filter is more suitable\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n    \u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n    \u003cli\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 496nm (O-III)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 501nm (O-III)\u003c\/li\u003e\n    \u003cli\u003etyp. 94% transmission at 656nm (H-alpha)\u003c\/li\u003e\n    \u003cli\u003eTransmission 465nm to 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\u003eCompletely resistant to high humidity, scratches, and aging effects\u003c\/li\u003e\n    \u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n    \u003cli\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n    \u003cli\u003eSince 2008, we 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":42055466549425,"sku":"8H00I3","price":85.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-36mm-559838.jpg?v=1782295511"},{"product_id":"astronomik-uhc-e-31mm-filter-enhance-deep-sky-and-comet-observations","title":"Astronomik UHC-E 31mm Filter – Enhance Deep-Sky and Comet Observations","description":"\u003ch1\u003eAstronomik UHC-E 31mm\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\u003cul\u003e\n    \u003cli\u003eObservation of Jupiter’s clouds.\u003c\/li\u003e\n    \u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n    \u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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-III filter for even better results when observing specific nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n    \u003cli\u003eVisual observation (dark skies): Reasonable, a UHC filter is more suitable\u003c\/li\u003e\n    \u003cli\u003eVisual observation (urban skies): Good, for telescopes up to 125 mm aperture and medium exit pupil\u003c\/li\u003e\n    \u003cli\u003eFilm photography: Good, but very long exposure times\u003c\/li\u003e\n    \u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (original): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (astro modified): Good, colour balance is near perfect\u003c\/li\u003e\n    \u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n    \u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n    \u003cli\u003etyp. 94% transmission at 486nm (H-beta)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 496nm (O-III)\u003c\/li\u003e\n    \u003cli\u003etyp. 95% transmission at 501nm (O-III)\u003c\/li\u003e\n    \u003cli\u003etyp. 94% transmission at 656nm (H alpha)\u003c\/li\u003e\n    \u003cli\u003eTransmission 465nm to 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\u003eCompletely resistant against high humidity, scratches, and aging effects\u003c\/li\u003e\n    \u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n    \u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n    \u003cli\u003eSince 2008 we 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":42055467499697,"sku":"8H00I2","price":71.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-31mm-386532.jpg?v=1782295510"},{"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-uhc-e-m-filters-for-deep-sky-observation-comets","title":"Astronomik UHC-E M Filters for Deep Sky Observation \u0026 Comets","description":"\u003ch1\u003eAstronomik UHC-E M Filters\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC-E filter is a budget-friendly option for deep-sky observation of emission nebulae and comets, especially under light-polluted skies. It is particularly suitable for smaller telescopes up to 5\" (125mm).\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eMain Use\u003c\/h4\u003e\n\u003cp\u003eThe Astronomik UHC-E filter offers a full width at half maximum (FWHM) of 45nm, effectively blocking light from typical streetlights (sodium and mercury vapor) and airglow. This enhances the contrast between your target and the night sky. While the contrast enhancement is less than that of the Astronomik UHC filter, it allows more starlight to pass through, making it ideal for smaller telescopes. The UHC-E filter also passes a spectral line of Carbon, opening up the possibility for 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\u003eEnhanced resolution of double stars\u003c\/li\u003e\n\u003cli\u003ePhotography under light-polluted skies with DSLRs and other cameras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eFor telescopes with apertures larger than 5\", we recommend our standard UHC filter for greater contrast enhancement. For those using telescopes larger than 8\", consider our O\u003csub\u003eIII\u003c\/sub\u003e filter for improved results when observing specific nebulae.\u003c\/p\u003e\n\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Reasonable; UHC filter is more suitable\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Good for telescopes up to 125mm aperture and medium exit pupil\u003c\/li\u003e\n\u003cli\u003eFilm photography: Good, but requires very long exposure times\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good when paired with an additional IR-block filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good; color balance is nearly perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Good; color balance is nearly perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good when used with an additional IR-block filter\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good if light pollution is significant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTypical transmission of 94% at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003eTypical transmission of 95% at 496nm (O\u003csub\u003eIII\u003c\/sub\u003e)\u003c\/li\u003e\n\u003cli\u003eTypical transmission of 95% at 501nm (O\u003csub\u003eIII\u003c\/sub\u003e)\u003c\/li\u003e\n\u003cli\u003eTypical transmission of 94% at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003eTransmission from 465nm to 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\u003eCompletely resistant to high humidity, scratches, and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited; the filter will not reduce your telescope's optical performance\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003cli\u003eSince 2008, we ship filters with a new design that eliminates halos and strange reflections\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"M55","offer_id":42055479591089,"sku":null,"price":241.0,"currency_code":"GBP","in_stock":true},{"title":"M58","offer_id":42055478608049,"sku":"8H00VN","price":241.0,"currency_code":"GBP","in_stock":true},{"title":"M62","offer_id":42055478640817,"sku":"8H00VN-2","price":241.0,"currency_code":"GBP","in_stock":true},{"title":"M67","offer_id":42055478673585,"sku":"8H00VN-3","price":241.0,"currency_code":"GBP","in_stock":true},{"title":"M72","offer_id":42055478706353,"sku":"8H00VN-4","price":241.0,"currency_code":"GBP","in_stock":true},{"title":"M77","offer_id":42055478739121,"sku":"8H00VN-5","price":241.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-uhc-e-m-filters-270479.jpg?v=1782295533"},{"product_id":"astronomik-oiii-filter-high-contrast-for-nebulae-observation","title":"Astronomik OIII Filter – High Contrast for Nebulae Observation","description":"\u003ch1\u003eAstronomik OIII Filter for Visual Observation of Nebulae\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik OIII filter is specifically designed for the visual observation of gaseous and planetary nebulae. With its extremely narrow bandpass focused on the two OIII lines, it significantly enhances contrast, even in ideal viewing conditions. The Astronomik OIII filter is a must-have tool for observing faint supernova remnants and planetary nebulae, often making the difference between seeing or missing the object!\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eMain Use\u003c\/h2\u003e\n\u003cp\u003eThe optimal use for the Astronomik OIII filter is with telescopes with apertures larger than 6\" (150mm) and an aperture ratio between 1:3.7 and 1:15. Astronomik OIII filters ensure excellent transmission and minimal chromatic distortions even in telescopes with very bright aperture ratios of 1:3 and beyond. These filters expand the view across the entire field of view of the eyepiece, offering more than just a centered observation.\u003c\/p\u003e\n\n\u003ch2\u003eBest for Large Apertures\u003c\/h2\u003e\n\u003cp\u003eThis filter is best used with telescopes that have an aperture larger than 6\" (150mm). For experienced Deep Sky observers with telescopes larger than 10\" (250mm), the Astronomik OIII filter is often preferred over UHC filters. The high optical quality of Astronomik substrates guarantees needle-sharp stars without compromising your telescope’s optical performance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e95% transmission at 496nm and 501nm (OIII)\u003c\/li\u003e\n  \u003cli\u003eComplete blocking of all unwanted wavelengths\u003c\/li\u003e\n  \u003cli\u003eIdeal for telescopes 10\" (25cm) and larger\u003c\/li\u003e\n  \u003cli\u003eOptimal for planetary nebulae and supernova remnants\u003c\/li\u003e\n  \u003cli\u003eMoisture-resistant, scratch-proof, and long-lasting\u003c\/li\u003e\n  \u003cli\u003eOptically polished substrate ensures no reduction in telescope performance\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, durable filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSuitability:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVisual observation (dark skies): Excellent, provides significant contrast enhancement for OIII-emission nebulae\u003c\/li\u003e\n  \u003cli\u003eVisual observation (urban skies): Very good, huge contrast enhancement at OIII-emission nebulae\u003c\/li\u003e\n  \u003cli\u003eFilm photography: Requires very long exposure times\u003c\/li\u003e\n  \u003cli\u003eCCD photography: Good, when used with an additional IR-block filter\u003c\/li\u003e\n  \u003cli\u003eDSLR photography (original and astro modified): Very good, offers large contrast improvement for OIII-emission nebulae\u003c\/li\u003e\n  \u003cli\u003eWebcam \/ Video (Deep Sky): Suitable if observing OIII objects with heavy light pollution\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Astronomik OIII visual 1.25\" (M28.5)","offer_id":42055514882225,"sku":null,"price":89.0,"currency_code":"GBP","in_stock":true},{"title":"Astronomik OIII visual 2\" (M48)","offer_id":42055514914993,"sku":null,"price":179.0,"currency_code":"GBP","in_stock":true},{"title":"Astronomik OIII visual SC Rear Cell (2\"\/24 TPI)","offer_id":42055514980529,"sku":null,"price":188.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-oiii-visual-filters-in-a-variety-of-sizes-478974.jpg?v=1782295439"},{"product_id":"astronomik-h-beta-filter-enhance-contrast-for-large-telescopes","title":"Astronomik H-beta Filter – Enhance Contrast for Large Telescopes","description":"\u003ch1\u003e\u003cstrong\u003eAstronomik H-beta Filter\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003cstrong\u003eThe Astronomik H-beta filter is specifically designed for visual observation, optimized for larger aperture telescopes.\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThis filter enhances the H-beta emission line, allowing it to pass through nearly unhindered, while blocking other wavelengths. It significantly boosts contrast for dark-adapted eyes, making objects like the Horse Head Nebula observable with telescopes between 10\" and 12\".\u003c\/p\u003e\n\n\u003ch3\u003eMain Use\u003c\/h3\u003e\n\u003cp\u003eThe ideal aperture ratio for this filter ranges from f\/4.5 to f\/6, with an extended range from f\/3.5 to f\/15. Transmission losses and chromatic distortions are minimal and noticeable only with extremely fast aperture ratios of f\/3 or faster. The Astronomik H-beta filter is excellent for viewing large objects across the entire field of view, even with wide-angle eyepieces. It works best with telescopes of 8\" (20cm) or larger. Smaller scopes may not collect enough light for effective use. Its high optical quality ensures stars appear sharp, preserving the performance of your telescope.\u003c\/p\u003e\n\n\u003ch3\u003eOther Uses\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThough limited to a few celestial objects for visual observation, the filter excels at highlighting faint H-alpha regions that would otherwise be difficult to see.\u003c\/li\u003e\n\u003cli\u003eWhen used with an EOS Clip Filter, the H-beta filter enables DSLR photography even in light-polluted areas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSuitability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Very good, but limited to specific objects\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Not suitable\u003c\/li\u003e\n\u003cli\u003eFilm photography: Variable, requiring long exposure times\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good when combined with an additional IR-block filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Excellent for select objects\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Excellent for select objects\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good when paired with an IR-block filter\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Unsuitable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Data\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTypical transmission over 95% at the H-beta line\u003c\/li\u003e\n\u003cli\u003eComplete blocking of unwanted wavelengths\u003c\/li\u003e\n\u003cli\u003eMain use: Observing Hydrogen Nebulae\u003c\/li\u003e\n\u003cli\u003eMoisture-resistant, scratch-proof, and non-aging\u003c\/li\u003e\n\u003cli\u003eOptically polished substrate that maintains telescope performance (resolution and contrast)\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant to humidity, scratches, and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited; the filter does not degrade optical performance\u003c\/li\u003e\n\u003cli\u003eComes with a high-quality, durable storage box\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Astronomik","offers":[{"title":"Astronomik H-beta visual 1.25\" (M28.5)","offer_id":42058256482481,"sku":"8H0057","price":89.0,"currency_code":"GBP","in_stock":true},{"title":"Astronomik H-beta visual 2\" (M48)","offer_id":42058256515249,"sku":"8H0058","price":179.0,"currency_code":"GBP","in_stock":true},{"title":"Astronomik H-beta visual T-Mount (M42x0.75)","offer_id":42058256548017,"sku":"8H0059","price":179.0,"currency_code":"GBP","in_stock":true},{"title":"Astronomik H-beta SC Rear Cell (2\" \/ 24TPI)","offer_id":42058256580785,"sku":"8H0060","price":197.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/astronomik-h-beta-visual-filters-are-some-of-the-best-available-540926.jpg?v=1782295396"},{"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-visual-light-pollution.oembed","provider":"Dark Clear Skies ","version":"1.0","type":"link"}