{"title":"Astrophotography Filters \u0026 Filter Wheels","description":"","products":[{"product_id":"optolong-l-extreme-deep-sky-light-pollution-filter-1-25","title":"Optolong L-eXtreme Dual Narrowband Filter - 1.25\"","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe L-eXtreme Filter is \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eperfect for deep sky nebula photography from the city as it uses much tighter narrowband limits - blocking out unwanted glow from the city. The relentless spread or urbanization and its associated light pollution have become a big problem for all amateur astro photographers around the world. One solution is to purchase a Mono camera but this can be expensive and might also require the purchase of several types of narrowband filters and a filter wheel.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThese filters open up a whole new opportunity for fast newtonian telescopes, double-lens ED refractors or even achromats, allowing for extremely detailed and high class astronomical images even from heavy light polluted cities as it blocks out all artificial light pollution sources as it is a dual narrow bandpass filter, only allowing for the wavelengths of O-III and H-Alpha. This filter is fast bcoming a must have item for serious Astro-imagers using OSC cameras.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe L-eXtreme is a two 7NM narrow bandpass filter which can be used with one-shot color cameras like DSLRs (digital SLR), color CMOS and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allows amateurs to photograph rich emission type nebulas, even in bright, heavily light-polluted skies. The L-eXtreme filter is the best choice for fast optical systems as it isolates the H-Alpha and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between these are maximized.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-eXtreme has a multiple anti-reflective coatings on the optical substrate. The L-eXtreme filter uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes. Absolute precision of the coatings as well as maximum values for transmission in the passband and optical density in the off-band range are guaranteed for all filters.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eIMPORTANT WARNING: These nebula filters are NOT designed for observation of the Sun. Do not use this filter to look at the Sun as serious eye damage, blindness as well as damage to equipment may result.\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cb\u003eFilter Details:\u003c\/b\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional photographic filter for astronomy\u003c\/li\u003e\n\u003cli\u003eImproves deep sky emission nebula photography\u003c\/li\u003e\n\u003cli\u003eBest choice for extreme light pollution suppression\u003c\/li\u003e\n\u003cli\u003eFor taking pictures also from highly light-polluted areas\u003c\/li\u003e\n\u003cli\u003eDual-narrow-band filter with high transmission for O-III and H-Alpha lines\u003c\/li\u003e\n\u003cli\u003eDoes not require very large or extremely expensive telescopes\u003c\/li\u003e\n\u003cli\u003eExcellent results also with fast inexpensive newtonian telescopes, double-lens ED refractors or even achromats\u003c\/li\u003e\n\u003cli\u003eL-eXtreme filter is the better choice for fast systems at a competitive price\u003c\/li\u003e\n\u003cli\u003eCMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras\u003c\/li\u003e\n\u003cli\u003eFilter diameter: 1.25 inches \/ 31.7 mm\u003c\/li\u003e\n\u003cli\u003eConnecting thread: M28x0.6mm\u003c\/li\u003e\n\u003cli\u003eSelected optical glass material\u003c\/li\u003e\n\u003cli\u003eSpectrum: 300-1000nm\u003c\/li\u003e\n\u003cli\u003eOff-Band Blocking: \u0026gt; 99 %\u003c\/li\u003e\n\u003cli\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront and highest parallelism over the both surfaces\u003c\/li\u003e\n\u003cli\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm and OIII 496nm \u0026amp; 500nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003col\u003e\n\u003cli\u003eL-eXtreme filter (designed for 1.25\" optics)\u003c\/li\u003e\n\u003cli\u003eDust protection box\u003c\/li\u003e\n\u003cli\u003eTechnical Data\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40683481432259,"sku":"L-eXtreme1","price":259.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/OptolongL-ExtremeFilter125_6.jpg?v=1631716652"},{"product_id":"optolong-l-extreme-deep-sky-light-pollution-filter-2","title":"Optolong L-eXtreme Dual Narrowband Filter - 2\"","description":"\u003cp\u003eL-eXtreme Filter is absolutely perfect for deep sky nebula photography from the city as it uses much tighter narrowband limits. The relentless spread or urbanization and its associated light pollution have become a big problem for all amateur astro photographers around the world. One solution is to purchase a Mono camere but this can be extremely expensive and might include the purchase of several types of narrowband filters and a filter wheel.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThese filters open up a whole new opportunity for fast newtonian telescopes, double-lens ED refractors or even achromats, allowing for extremely detailed and high class astronomical images even from heavy light polluted cities as it blocks out all artificial light pollution sources as it is a dual narrow bandpass filter, only allowing for the wavelengths of O-III and H-Alpha. This filter is fast bcoming a must have item for serious Astro-imagers using OSC cameras.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe L-eXtreme is a two 7NM narrow bandpass filter which can be used with one-shot color cameras like DSLRs (digital SLR), color CMOS and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allows amateurs to photograph rich emission type nebulas, even in bright, heavily light-polluted skies. The L-eXtreme filter is the best choice for fast optical systems as it isolates the H-Alpha and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between these are maximized.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-eXtreme has a multiple anti-reflective coatings on the optical substrate. The L-eXtreme filter uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes. Absolute precision of the coatings as well as maximum values for transmission in the passband and optical density in the off-band range are guaranteed for all filters.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eIMPORTANT WARNING: These nebula filters are NOT designed for observation of the Sun. Do not use this filter to look at the Sun as serious eye damage, blindness as well as damage to equipment may result.\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cb\u003eFilter Details:\u003c\/b\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional photographic filter for astronomy\u003c\/li\u003e\n\u003cli\u003eImproves deep sky emission nebula photography\u003c\/li\u003e\n\u003cli\u003eBest choice for extreme light pollution suppression\u003c\/li\u003e\n\u003cli\u003eFor taking pictures also from highly light-polluted areas\u003c\/li\u003e\n\u003cli\u003eDual-narrow-band filter with high transmission for O-III and H-Alpha lines\u003c\/li\u003e\n\u003cli\u003eDoes not require very large or extremely expensive telescopes\u003c\/li\u003e\n\u003cli\u003eExcellent results also with fast inexpensive newtonian telescopes, double-lens ED refractors or even achromats\u003c\/li\u003e\n\u003cli\u003eL-eXtreme filter is the better choice for fast systems at a competitive price\u003c\/li\u003e\n\u003cli\u003eCMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras\u003c\/li\u003e\n\u003cli\u003eFilter diameter: 1.25 inches \/ 31.7 mm\u003c\/li\u003e\n\u003cli\u003eConnecting thread: M28x0.6mm\u003c\/li\u003e\n\u003cli\u003eSelected optical glass material\u003c\/li\u003e\n\u003cli\u003eSpectrum: 300-1000nm\u003c\/li\u003e\n\u003cli\u003eOff-Band Blocking: \u0026gt; 99 %\u003c\/li\u003e\n\u003cli\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront and highest parallelism over the both surfaces\u003c\/li\u003e\n\u003cli\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm and OIII 496nm \u0026amp; 500nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003col\u003e\n\u003cli\u003eL-eXtreme filter (designed for 1.25\" optics)\u003c\/li\u003e\n\u003cli\u003eDust protection box\u003c\/li\u003e\n\u003cli\u003eTechnical Data\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40683519803587,"sku":"0310170","price":319.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/OptolongL-ExtremeFilter2_2.jpg?v=1631718336"},{"product_id":"optolong-l-enhance-deep-sky-light-pollution-filter-2","title":"Optolong L-eNhance Dual Narrowband Filter - 2\"","description":"The L-enhance Filter is a Tri-band filter, perfect for deep sky nebula photography from the city as it uses tight narrowband limits - blocking out unwanted glow from the city. The relentless spread or urbanization and its associated light pollution have become a big problem for all amateur astro photographers around the world. One solution is to purchase a Mono camera but this can be expensive and might also require the purchase of several types of narrowband filters and a filter wheel.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThese filters open up a whole new opportunity for fast newtonian telescopes, double-lens ED refractors or even achromats, allowing for extremely detailed and high class astronomical images even from heavy light polluted cities as it blocks out all artificial light pollution sources as it is a Tri-bandpass filter, only allowing for the wavelengths of O-III, H-Beta \u0026amp; H-Alpha.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-eNhance provides an economical and practical solution for amateurs using DSLR or color CMOS and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allows amateurs to take detailed astronomical images, even in bright, heavily light-polluted areas thanks to its maximum transmission lines of up to 90%. The narrow bandpass for the wavelengths of O-III, H-Beta and H-Alpha really help control the impact from light polluted skies.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-eNhance has a multiple anti-reflective coating on the optical substrate which uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eIMPORTANT WARNING: These nebula filters are NOT designed for observation of the Sun. Do not use this filter to look at the Sun as serious eye damage, blindness as well as damage to equipment may result.\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional photographic filter for astronomy\u003c\/li\u003e\n\u003cli\u003eImproves deep sky emission nebula photography\u003c\/li\u003e\n\u003cli\u003eBest choice for enhanced light pollution suppression\u003c\/li\u003e\n\u003cli\u003eFor taking pictures also from highly light polluted areas\u003c\/li\u003e\n\u003cli\u003eTri-band filter with high transmission for O-III, H-Beta and H-Alpha lines\u003c\/li\u003e\n\u003cli\u003eDoes not require very large or extremely expensive telescopes\u003c\/li\u003e\n\u003cli\u003eExcellent results also with inexpensive newtonian telescopes, double-lens ED refractors or even achromats\u003c\/li\u003e\n\u003cli\u003eCMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras\u003c\/li\u003e\n\u003cli\u003eBalanced colour for a natural image\u003c\/li\u003e\n\u003cli\u003eFilter diameter: 2 inch\u003c\/li\u003e\n\u003cli\u003eConnecting thread: M28,5 x 0,6mm (Eyepiece thread 1.25 inch)\u003c\/li\u003e\n\u003cli\u003eSelected optical glass material\u003c\/li\u003e\n\u003cli\u003eSpectrum: 300-1000nm\u003c\/li\u003e\n\u003cli\u003eOff-Band Blocking: \u0026gt; 99%\u003c\/li\u003e\n\u003cli\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront and highest parallelism over the both surfaces\u003c\/li\u003e\n\u003cli\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm and H-beta 486nm).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003col\u003e\n\u003cli\u003eL-eNhance 2\" filter\u003c\/li\u003e\n\u003cli\u003eDust protection box\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40683842339011,"sku":"L-eXtreme2","price":350.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/OptolongL-Enhance2_2.jpg?v=1631720499"},{"product_id":"optolong-l-pro-deep-sky-light-pollution-filter-1-25","title":"Optolong L-Pro Deep Sky Light Pollution Filter - 1.25\"","description":"The L-Pro Filter is the best choice for light pollution suppression and allows astrophotos to be taken of broadband emission objects such as galaxies, reflection nebulae and globular star clusters.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe relentless spread or urbanization and its associated light pollution have become a big problem for all amateur astro photographers around the world. One solution is to purchase a Mono camera but this can be expensive and might also require the purchase of several types of narrowband filters and a filter wheel.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-Pro is a multi-bandpass filter which offers much better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro remains the best choice for viewing or photographing broadband targets in light polluted areas.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects by selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lights such as mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent main emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural areas with heavy light pollution.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-Pro has a multiple anti-reflective coating on the optical substrate and uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eIMPORTANT WARNING: These nebula filters are NOT designed for observation of the Sun. Do not use this filter to look at the Sun as serious eye damage, blindness as well as damage to equipment may result.\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional visual and photographic filter for astronomy\u003c\/li\u003e\n\u003cli\u003eImproves deep sky nebula constellation photography\u003c\/li\u003e\n\u003cli\u003eBest choice for broadband light pollution suppression\u003c\/li\u003e\n\u003cli\u003eFilter diameter: 1.25 inch \/ 31.7mm\u003c\/li\u003e\n\u003cli\u003eConnecting thread: M28.5 x 0.6mm (Eyepiece thread 1.25 inch)\u003c\/li\u003e\n\u003cli\u003eSelected optical glass material\u003c\/li\u003e\n\u003cli\u003eSpectrum: 380-750nm\u003c\/li\u003e\n\u003cli\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished glass to ensure accurate 1\/4 wavefront and highest parallelism over the both surfaces\u003c\/li\u003e\n\u003cli\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm)\u003c\/li\u003e\n\u003cli\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003col\u003e\n\u003cli\u003eL-Pro filter (1.25\")\u003c\/li\u003e\n\u003cli\u003eDust protection box\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40684892553411,"sku":"OPL-LPRO1","price":179.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/OptolongL-ProFilter125_2.jpg?v=1631729853"},{"product_id":"optolong-l-pro-deep-sky-light-pollution-filter-2","title":"Optolong L-Pro Deep Sky Light Pollution Filter - 2\"","description":"The L-Pro Filter is the best choice for light pollution suppression and allows astrophotos to be taken of broadband emission objects such as galaxies, reflection nebulae and globular star clusters.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe relentless spread or urbanization and its associated light pollution have become a big problem for all amateur astro photographers around the world. One solution is to purchase a Mono camera but this can be expensive and might also require the purchase of several types of narrowband filters and a filter wheel.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-Pro is a multi-bandpass filter which offers much better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro remains the best choice for viewing or photographing broadband targets in light polluted areas.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects by selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lights such as mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent main emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural areas with heavy light pollution.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eL-Pro has a multiple anti-reflective coating on the optical substrate and uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eIMPORTANT WARNING: These nebula filters are NOT designed for observation of the Sun. Do not use this filter to look at the Sun as serious eye damage, blindness as well as damage to equipment may result.\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional visual and photographic filter for astronomy\u003c\/li\u003e\n\u003cli\u003eImproves deep sky nebula constellation photography\u003c\/li\u003e\n\u003cli\u003eBest choice for broadband light pollution suppression\u003c\/li\u003e\n\u003cli\u003eFilter diameter: 2 inch\u003c\/li\u003e\n\u003cli\u003eConnecting thread: M28.5 x 0.6mm (Eyepiece thread 1.25 inch)\u003c\/li\u003e\n\u003cli\u003eSelected optical glass material\u003c\/li\u003e\n\u003cli\u003eSpectrum: 380-750nm\u003c\/li\u003e\n\u003cli\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished glass to ensure accurate 1\/4 wavefront and highest parallelism over the both surfaces\u003c\/li\u003e\n\u003cli\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm)\u003c\/li\u003e\n\u003cli\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003col\u003e\n\u003cli\u003eL-Pro filter (2\")\u003c\/li\u003e\n\u003cli\u003eDust protection box\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40684948291779,"sku":"0310150","price":229.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/OptolongL-ProFilter2_2.jpg?v=1631730201"},{"product_id":"zwo-uv-ir-cut-filter-2","title":"ZWO UV\/IR Blocking Filter - 1.25\"","description":"\u003cp\u003eThis filter blocks out ultraviolet and infrared light which improves the imaging and viewing on many telescopes. This is especially useful for camera sensor chips that have no UV protective AR glass and are sensitive to UV and IR light.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe filter is used for luminance imaging and for Moon and Planet images. Infrared or IR light is invisible to the human eye, and so even though most telescopes are not designed to focus IR light, it does not matter when you are using your telescope visually.\u003c\/p\u003e\n\u003cp\u003eHowever, when you add a camera to the mix, its a whole other story! Unlike the human eye, a silicon sensor is very sensitive to light in the infrared portion of the spectrum, and that is a problem and can cause blurring in your images. That means your nice, sharp visual light image is degraded by the addition of the infrared layer. This problem can easily be solved by blocking the infrared, and the ZWO IR-Cut filter will do just that.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter type: UV\/IR Cut Filter\u003c\/li\u003e\n\u003cli\u003eFilter thickness: 1 mm glass thickness\u003c\/li\u003e\n\u003cli\u003eConnection: 1.25\" filter thread (outside)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003col\u003e\u003c\/ol\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40748713705667,"sku":"ZWOIRC1","price":70.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWOUVIRFilter125.jpg?v=1632411309"},{"product_id":"zwo-uv-ir-blocking-filter-2","title":"ZWO UV\/IR Blocking Filter - 2\"","description":"\u003cp\u003eThis filter blocks out ultraviolet and infrared light which improves the imaging and viewing on many telescopes. This is especially useful for camera sensor chips that have no UV protective AR glass and are sensitive to UV and IR light.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe filter is used for luminance imaging and for Moon and Planet images. Infrared or IR light is invisible to the human eye, and so even though most telescopes are not designed to focus IR light, it does not matter when you are using your telescope visually.\u003c\/p\u003e\n\u003cp\u003eHowever, when you add a camera to the mix, its a whole other story! Unlike the human eye, a silicon sensor is very sensitive to light in the infrared portion of the spectrum, and that is a problem and can cause blurring in your images. That means your nice, sharp visual light image is degraded by the addition of the infrared layer. This problem can easily be solved by blocking the infrared, and the ZWO IR-Cut filter will do just that.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter type: UV\/IR Cut Filter\u003c\/li\u003e\n\u003cli\u003eFilter thickness: 2 mm glass thickness\u003c\/li\u003e\n\u003cli\u003eConnection: 1.85\" filter thread (outside)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003col\u003e\u003c\/ol\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40748809978051,"sku":"ZWOIRC2","price":90.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWOUVIRFilter2_2.jpg?v=1632411417"},{"product_id":"zwo-filter-drawer-m48-2","title":"ZWO Filter Drawer - M48 (2\")","description":"This filter drawer allows quick and easy manual filter changes in seconds. With the 2\" Filter Holder, this quick release filter drawer is especially useful for astrophotographers who want to change filters (eg. Broadband \u0026amp; Narrowband) during sessions but do not want a large and sometimes heavy filterwheel.\u003cbr\u003e\u003cbr\u003e\u003cem\u003eSpecial features:\u003c\/em\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eThe optical length is only 21mm. For ZWO cameras, the drawer can simply be used instead of the T2 extension.\u003c\/li\u003e\n\u003cli\u003eThe filter holder snaps into place magnetically, which guarantees precise positioning of the filter.\u003c\/li\u003e\n\u003cli\u003eThanks to the open design of the drawer, the filter can be easily inserted or removed.\u003c\/li\u003e\n\u003cli\u003eThe drawer is round and very compact, so it can also be used before the optics, e.g with Hyperstar systems or the Celestron RASA.\u003c\/li\u003e\n\u003cli\u003eA filter holder for 2\" filters is included.\u003c\/li\u003e\n\u003cli\u003eThe use of 1.25\" filters is also possible with an optional reduction adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eType of construction: Filter drawer\u003c\/li\u003e\n\u003cli\u003eHeight: 21 mm without T2 male thread\u003c\/li\u003e\n\u003cli\u003eLength of the T2 male thread: 4 mm\u003c\/li\u003e\n\u003cli\u003eConnection telescope side: M48x0.75 mm female thread - length 5 mm\u003c\/li\u003e\n\u003cli\u003eConnection camera side: T2 male thread - length 4 mm\u003c\/li\u003e\n\u003cli\u003eAdapter for 2\" filter: With M48x0.75 female thread\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40749419528387,"sku":"ZWO-FD-M42-II","price":119.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWOFilterDrawer_4.jpg?v=1632416743"},{"product_id":"zwo-motorised-filter-wheel-8-x1-25","title":"ZWO Motorised Filter Wheel 8 x 1.25\"","description":"\u003cp\u003e\u003cstrong\u003eThis ZWO Motorised Filter Wheel is designed to hold 8 different 1.25\" filters.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis motorised filter wheel is compact and weighs less than 400g (without filters).The USB2.0 is used for powering and the max power consumption is around 150 mA. so you can even connect the USB cable directly to the USB2.0 hub of many cooled Astrocameras.\u003c\/p\u003e\n\u003cp\u003eThe distance between the filters and sensor is only 10 mm, so there will be no vignetting with fast telescopes, even if using an ASI1600. If you use unmounted 31 mm filters, you can even use lenses up to f\/2 without annoying vignetting.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe ZWO EFW is perfect for creating L-RGB and false-colour images with ASI cameras. The filter wheel has eight positions for the filters - which is ideal for L-RGB filters + three nebula filters.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Motorized filter wheel\u003c\/li\u003e\n\u003cli\u003eOffers space for: 8 x 1.25\" mounted filters or 8 x 31 mm unmounted filters\u003c\/li\u003e\n\u003cli\u003eTelescope side connection: T2-thread (female) and 1.25\"\u003c\/li\u003e\n\u003cli\u003eCamera side connection: T2-thread (male\/female) and 1.25\"\u003c\/li\u003e\n\u003cli\u003eLength: Only 20 mm optical path (from T2 to T2 female)\u003c\/li\u003e\n\u003cli\u003eWeight: Approx. 400g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eDownload the EFW Manual \u003c\/span\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/ZWO_EFW_Manual.pdf?v=1632471661\" target=\"_blank\"\u003ehere\u003c\/a\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40755116114115,"sku":"ZWOEFW8X125","price":439.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWOFilterwheel8x125_6.jpg?v=1632471267"},{"product_id":"zwo-motorised-filter-wheel-7-x-36mm","title":"ZWO Motorised Filter Wheel 7 x 36mm","description":"\u003cp\u003e\u003cstrong\u003eThis ZWO Motorised Filter Wheel is designed to hold 7 unmounted 36mm filters.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis motorised filter wheel is compact and weighs less than 400g (without filters).The USB2.0 is used for powering and the max power consumption is around 150 mA. so you can even connect the USB cable directly to the USB2.0 hub of many cooled Astrocameras.\u003c\/p\u003e\n\u003cp\u003eThe distance between the filters and sensor is only 10 mm, so there will be no vignetting with fast telescopes, even if using an ASI1600. If you use unmounted 31 mm filters, you can even use lenses up to f\/2 without annoying vignetting.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe ZWO EFW is perfect for creating L-RGB and false-colour images with ASI cameras. The filter wheel has eight positions for the filters - which is ideal for L-RGB filters + three nebula filters.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Motorized filter wheel\u003c\/li\u003e\n\u003cli\u003eOffers space for: 7x 36 mm unmounted filters\u003c\/li\u003e\n\u003cli\u003eTelescope side connection: T2-thread (female) + 1.25\"\u003c\/li\u003e\n\u003cli\u003eCamera side connection: T2-thread (male\/female) + 1.25\"\u003c\/li\u003e\n\u003cli\u003eLength: Only 20 mm optical path (from T2 to T2 female)\u003c\/li\u003e\n\u003cli\u003eWeight: Approx. 400g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDownload the EFW Manual \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/ZWO_EFW_Manual.pdf?v=1632471661\" target=\"_blank\"\u003ehere\u003c\/a\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40755160809667,"sku":"ZWOEFW7X36-N","price":399.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWOFilterwheel7x31_3.jpg?v=1632472242"},{"product_id":"zwo-motorised-filter-wheel-5-x-2","title":"ZWO Motorised Filter Wheel 5 x 2\"","description":"\u003cp\u003e\u003cstrong\u003eThis ZWO Motorised Filter Wheel is designed to hold 5 unmounted 2\" filters.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eZWO´s latest EFW (Electronic Filter Wheel) provides a larger clear aperture than previous models but still only weighs 500g. The filter wheel body is CNC milled from aircraft grade aluminum and is only 20mm thick.\u003cbr\u003e\u003cbr\u003e\u003cem\u003eMotor drive:\u003c\/em\u003e\u003cbr\u003eThe core part of the EFW is the stepper motor which has reliable performance and quality that comes from NPM, Japan. This 2\"” Electronic Filter Wheel can be rotated both clockwise and counter clockwise for the desired filter selection.\u003cbr\u003e\u003cbr\u003eThere is no need of multiple cables to power this wheel up, just one USB cable does the trick. The maximum power supply of this EFW is approximately 120 mA @ 5 V, which can be operated from most cooled Astrocameras with a USB2.0 port.\u003cbr\u003e\u003cbr\u003e\u003cem\u003eFilters:\u003c\/em\u003e\u003cbr\u003eAccepts 2″ thread-in filters and 50.4 mm ±0.5 mm unmounted filters.\u003cbr\u003eWhen connected to an ASI6200, the distance from the filter to the sensor is about 18 mm.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Motorized filter wheel\u003c\/li\u003e\n\u003cli\u003eFilter size: 2\" or 50.4±0.5 mm\u003c\/li\u003e\n\u003cli\u003eFilter positions: 5\u003c\/li\u003e\n\u003cli\u003eBody material: Aircraft graded aluminum, CNC milled\u003c\/li\u003e\n\u003cli\u003eBody thickness: 20 mm\u003c\/li\u003e\n\u003cli\u003eWorking distance from filter to sensor: 18 mm with ASI6200MM Pro camera\u003c\/li\u003e\n\u003cli\u003eTelescope connection: M54x0.75 female (M48x0.75 and M48x0.75 via supplied adapter)\u003c\/li\u003e\n\u003cli\u003eCamera connection: Screws\u003c\/li\u003e\n\u003cli\u003eDrive: Stepper motor from NPM, Japan\u003c\/li\u003e\n\u003cli\u003eControl mode: ASCOM and SDK\u003c\/li\u003e\n\u003cli\u003eElectric connection: USB2.0\u003c\/li\u003e\n\u003cli\u003ePower requirement: 120 mA @ 5 V\u003c\/li\u003e\n\u003cli\u003eWeight: 500g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003eDownload the EFW Manual \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/ZWO_EFW_Manual.pdf?v=1632471661\" target=\"_blank\"\u003ehere\u003c\/a\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40755368624323,"sku":"ZWOEFW5X2","price":452.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWOEFW5x2_3.jpg?v=1632473187"},{"product_id":"zwo-2-narrow-band-filter-set","title":"ZWO Narrowband Filter Set - 2\"","description":"\u003cp\u003e\u003cstrong\u003eZWO Narrowband Filter Set for Astrophotography:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eNarrowband nebula filters significantly increase the contrast of an object and eliminate light pollution. Due to the bandwidth of 7nm, images are displayed with extremely sharp contrast, even from light polluted cities. ZWO filters are homofocal with each other. The filter set consists of:\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eZWO H-Alpha Filter 7nm:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003eThis narrowband nebula filter has a definite pass band around 656 nm. This is the line in which H-II objects (hydrogen nebulae). Transmission in this range is 80%. The filter is the optimal choice for astrophotography as the contrast of nebulae is significantly increased.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eZWO O-III Filter 7nm:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003eThis narrowband nebula filter has a definite pass band around 500 nm. This is the line in which many planetary nebulae light. Transmission in this range is 80%. The filter is the optimal choice for astrophotography as the contrast of the nebulae is significantly increased. This filter is also suitable for visual observation.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eZWO S-II Filter 7nm:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe narrowband nebula filter has a definite pass band around 672 nm and like the O-III this is perfect for many planetary nebulae as well as emission nebulae and supernova remnants shine. Transmission in this range is 80%.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Nebula filter, interference filter\u003c\/li\u003e\n\u003cli\u003eSize: 2\" mounted in a low-profile filter cell\u003c\/li\u003e\n\u003cli\u003eThickness of the filters: 2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40755560710339,"sku":"ZWONBSET2","price":990.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWO2inchNarrowbandFilters_1.jpg?v=1632473789"},{"product_id":"zwo-1-25-narrowband-filter-set","title":"ZWO Narrowband Filter Set - 1.25\"","description":"\u003cp\u003e\u003cstrong\u003eZWO Narrowband Filter Set for Astrophotography:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eNarrowband nebula filters significantly increase the contrast of an object and eliminate light pollution. Due to the bandwidth of 7nm, images are displayed with extremely sharp contrast, even from light polluted cities. ZWO filters are homofocal with each other. The filter set consists of:\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eZWO H-Alpha Filter 7nm:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003eThis narrowband nebula filter has a definite pass band around 656 nm. This is the line in which H-II objects (hydrogen nebulae). Transmission in this range is 80%. The filter is the optimal choice for astrophotography as the contrast of nebulae is significantly increased.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eZWO O-III Filter 7nm:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003eThis narrowband nebula filter has a definite pass band around 500 nm. This is the line in which many planetary nebulae light. Transmission in this range is 80%. The filter is the optimal choice for astrophotography as the contrast of the nebulae is significantly increased. This filter is also suitable for visual observation.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eZWO S-II Filter 7nm:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe narrowband nebula filter has a definite pass band around 672 nm and like the O-III this is perfect for many planetary nebulae as well as emission nebulae and supernova remnants shine. Transmission in this range is 80%.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Nebula filter, interference filter\u003c\/li\u003e\n\u003cli\u003eSize: 1.25\" mounted in a low-profile filter cell\u003c\/li\u003e\n\u003cli\u003eThickness of the filters: 2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40755685392579,"sku":"ZWONBSET1","price":546.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWO125NarrowbandFilters_2.jpg?v=1632474143"},{"product_id":"zwo-lrgb-filter-set-2","title":"ZWO LRGB Filter Set - 2\"","description":"\u003cp\u003e\u003cstrong\u003eZWO L-RGB Round Filter Set for Astrophotography:\u003c\/strong\u003e\u003cbr\u003eThe filter set consists of four multi-coated interference filters. It is optimized for astrophotography with monochrome CCD and CMOS cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe filter set consists of:\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eInterference Filters Red, Green, Blue (RGB)\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUV\/IR block filter\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe filter set is a good alternative to the usually much more expensive filter sets of other manufacturers and a much better alternative to simple color filters. The transmission of these ZWO filters is considerably higher and the result is a high-contrast image which is very well suited for further processing.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe filter set is optimized for ZWO ASI cameras, but can also be used with other CCD cameras such as ATIK or Moravian.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Interference filter\u003c\/li\u003e\n\u003cli\u003eConnection: 2\" filter thread M48 x 0.75\u003c\/li\u003e\n\u003cli\u003eSubstrate thickness: 1.9 mm\u003c\/li\u003e\n\u003cli\u003eQuality: Fine optical polished\u003c\/li\u003e\n\u003cli\u003eCoating: Multi-coated\u003c\/li\u003e\n\u003cli\u003eTransmission: Over 92%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40755783008451,"sku":"ZWOLRGB2","price":452.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWOLRGBFilterSet_2.jpg?v=1632474644"},{"product_id":"copy-of-zwo-lrgb-filter-set-1-25","title":"ZWO LRGB Filter Set - 1.25\"","description":"\u003cp\u003e\u003cstrong\u003eZWO LRGB 1.25\" Filter set for astro imaging with MONO CMOS cameras:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe filter set consists of four multi-coated 1.25\" interference filters. \u003cbr\u003e\u003cbr\u003e\u003cem\u003eThe filter set consists of:\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e1.25\" RGB interference filters red, green, blue\u003c\/li\u003e\n\u003cli\u003e1.25\" UV\/IR blocking filter\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe filter set is optimally matched to the sensitivity of CMOS sensors, such as the ASI1600MM. The result is images with excellent color weighting and natural colors. Each filter is plane-parallel and the filters are parfocal to each other. Each filter is anti-reflective and has a high-quality coating.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConnection: 1.25\" filter thread\u003c\/li\u003e\n\u003cli\u003eCoatings: Multi-coating\u003c\/li\u003e\n\u003cli\u003eDesign: Multi-layer interference filter\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40755872366787,"sku":"ZWONEWLRGB","price":182.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/ZWOFiltersLRGB125_1.jpg?v=1632475221"},{"product_id":"ts-filter-drawer-housing","title":"TS Filter Drawer Housing - T2","description":"\u003cp\u003eThese filter housings are specially designed for use with either the 2\" or 1.25\" filter drawers and are really useful for helping you change filters quickly and easily with minimum disruption to your image train.\u003c\/p\u003e\n\u003cp\u003eAt only 100g weight and a diameter of 80mm, this quick filter housing is more compact and lightweight than a full sized filter wheel and is ideal for colour astrocam setups where generally single filters are required eg. Broadband \u0026amp; Narrowband.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eThese filter housings are suitable for use with both the 2\" and 1.25\" TS filter drawers. \u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eDue to the strengthened housing and longer T2 threads (male and female), this filter housing is suitable even for heavier cameras.\u003c\/li\u003e\n\u003cli\u003eWith only 100g weight and 85mm diameter, its also suitable for smaller telescopes.\u003c\/li\u003e\n\u003cli\u003eOptical path: 18mm wide.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cstrong\u003eSpec:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cul\u003e\n\u003cli\u003eConnection at telescope side: T2 thread (female) - M42 x 0.75 - length 4.4mm\u003c\/li\u003e\n\u003cli\u003eConnection at camera side: T2 thread (male) - M42 x 0.75 - length 4mm\u003c\/li\u003e\n\u003cli\u003eOptical path: 18 mm (without the male T2 thread)\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 100g\u003c\/li\u003e\n\u003cli\u003eDiameter: 85mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003col\u003e\n\u003cli\u003eFilter drawer housing only - \u003cem\u003eFilter drawers purchased separately and available to suit 1.25\" or 2\" mounted filters\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"TS Optics","offers":[{"title":"Default Title","offer_id":42713966117107,"sku":"TSFSLT2","price":98.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/AstrocameraFilterDrawerHousing_1.jpg?v=1651254388"},{"product_id":"ts-filter-drawer-2-filters","title":"TS Filter Drawer - 2\" Filters","description":"\u003cp\u003eThese Filter Drawers are designed for use with the TS Filter Drawer Housing. This allows you to quickly and easily change filters without having to disturb your imaging train. \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eRecommendation\u003c\/span\u003e: Why not have a filter drawer for each filter so you can leave the filters in place and they will always ready to change in seconds without having to handle the filter and risk touching it or exposing it to dust or finger prints. - \u003cem\u003eOptional Plastic storage cases are available to keep the filter and filter drawers clean when not in use.\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003eThis filter drawer is suitable for all 2\" filters, particularly for filters with a \"low-profile\" filter socket up to 6.5mm height.\u003cbr\u003e\u003cbr\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eOne Filter drawer for 2\" Filters\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"TS Optics","offers":[{"title":"Default Title","offer_id":42713984237811,"sku":"TSSCHUB2","price":39.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/TSFilterDrawer2inchAstroFilters.jpg?v=1651256722"},{"product_id":"ts-filter-drawer-1-25-filters","title":"TS Filter Drawer - 1.25\" Filters","description":"\u003cp\u003eThese Filter Drawers are designed for use with the TS Filter Drawer Housing. This allows you to quickly and easily change filters without having to disturb your imaging train. \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eRecommendation\u003c\/span\u003e: Why not have a filter drawer for each filter so you can leave the filters in place and they will always ready to change in seconds without having to handle the filter and risk touching it or exposing it to dust or finger prints. - \u003cem\u003eOptional Plastic storage cases are available to keep the filter and filter drawers clean when not in use.\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003eThis filter drawer is suitable for all 1.25\" filters, particularly for filters with a \"low-profile\" filter socket up to 6.5mm height.\u003cbr\u003e\u003cbr\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eOne Filter drawer for 1.25\" Filters\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"TS Optics","offers":[{"title":"Default Title","offer_id":42714006061299,"sku":"TSSCHUB1","price":39.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/TSFilterDrawer125inchAstroFilters.jpg?v=1651257247"},{"product_id":"optolong-l-ultimate-dual-narrowband-filter-2","title":"Optolong L-Ultimate Dual Narrowband Filter - 2\"","description":"The Optolong L-Ultimate dual narrowband filter is designed to drastically reduce the effect of light pollution and capture a very specific wavelength of light emitted from deep space emission and planetary nebula. Its two ultra-narrow 3 nm passing bands isolate the nebulae emissions in Ha (red) as well as OIII (green-blue).\u003cbr\u003e\u003cbr\u003eThis effectively means local light pollution is much less significant and even imaging during a full moon is possible too as all other wavelengths outside of the specific Ha and OIII signal are blocked from entering the camera. The L-Ultimate filter is literally the ultimate filter for astrophotography under urban light polluted skies.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eBlocks the artificial light from mercury vapour lamps, both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (skyglow).\u003c\/li\u003e\n\u003cli\u003eMaximum transmission of the main nebula emission lines at OIII (496 nm and 500 nm) and H-alpha (656 nm)\u003c\/li\u003e\n\u003cli\u003eTwo transmission bands with a bandpass of 3nm each\u003c\/li\u003e\n\u003cli\u003eDesigned mainly for astrophotography with color cameras\u003c\/li\u003e\n\u003cli\u003eAlso helpful with monochrome cameras, no need to change filters for catching both lines\u003c\/li\u003e\n\u003cli\u003eIdeal for urban areas with extreme light pollution\u003c\/li\u003e\n\u003cli\u003eIt incorporates an IR\/UV cut filter that is necessary in astrophotography, especially for astronomy cameras that are sensitive to the infrared radiation.\u003c\/li\u003e\n\u003cli\u003eUltra-thin filter cell to maximise the compatibility with most filter wheels.\u003c\/li\u003e\n\u003cli\u003eMulti-layered anti-reflection coating\u003c\/li\u003e\n\u003cli\u003eNo obvious halo around bright stars\u003c\/li\u003e\n\u003cli\u003eCell in an aerometal material, CNC machined, sand blasted, black anodized and laser engraved\u003c\/li\u003e\n\u003cli\u003eIncludes a PP plastic case, high pressure EVA case lining\u003c\/li\u003e\n\u003c\/ul\u003e\nThe interferential coating is deposited on the substrate using electron-beam gun evaporation with Ion-assisted deposition coating technology. This essentially increases the filter durability and resistance to scratching, as well as stability on CWL (central wavelength) and no deviation affected by temperature changes. \u003cbr\u003e\u003cbr\u003eThe planetary rotation system offers precision and homogeneity of coatings ensuring high transmission of pass-band and high optical density off-band.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpec:\u003c\/strong\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eTransmitted lines: OIII (500.7 nm), H-alpha (656.3 nm)\u003c\/li\u003e\n\u003cli\u003eFWHM: 3nm\u003c\/li\u003e\n\u003cli\u003eSuitable for: 2\" Filter threads\u003c\/li\u003e\n\u003cli\u003eBlocking range: 300 - 1000 nm (UV\/IR cut)\u003c\/li\u003e\n\u003cli\u003eBlocking: \u0026gt;OD4\u003c\/li\u003e\n\u003cli\u003eSubstrate: Optical glass made by Schott\u003c\/li\u003e\n\u003cli\u003eSubstrate thickness: 2mm\u003c\/li\u003e\n\u003cli\u003eSurface quality: 60\/40\u003c\/li\u003e\n\u003cli\u003eOptical flatness: λ\/4 rms\u003c\/li\u003e\n\u003cli\u003eParallelism: 30 arc sec\u003c\/li\u003e\n\u003cli\u003eAR coating: Multi layer\u003c\/li\u003e\n\u003cli\u003eCell: Aluminum, black anodized\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr\u003e\n\u003col\u003e\n\u003cli\u003eL-Ultimate Filter\u003c\/li\u003e\n\u003cli\u003eProtective box, foam lined\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":43659544494323,"sku":"L-ULTIMATE2","price":385.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/products\/Optolong-L-Ultimate-Narrowband-Filter.jpg?v=1677184128"},{"product_id":"filter-storage-case","title":"TS Filter Storage Case","description":"\u003cp\u003eSimple yet effective! Resealable protective containers for filter drawers and filters.\u003cbr\u003eThese cases keep the sensitive surfaces of your filter clean and free of dust and also protect it against dew. \u003c\/p\u003e\n\u003cp\u003eThis increases the longevity of the filter or adapter and if you have multiple single filter drawers, then its a great way to store the filter and drawer together so you can quickly swap them out when needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpec:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterials : Plastic, Semi-transparent\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInternal dimensions : 92mm x 92mm - height 25mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eExternal dimensions : 98mm x 98mm - height 29mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eA single filter case\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c!----\u003e","brand":"TS Optics","offers":[{"title":"Default Title","offer_id":49210540818767,"sku":"FIPA92","price":9.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/FIPA92-FilterCase_1.jpg?v=1719588591"},{"product_id":"zwo-seestar-s50-filter-holder","title":"ZWO Seestar S50 Filter Holder","description":"\u003cp\u003e\u003cstrong\u003eThis 2\" filter adapter is specially designed for the ZWO Seestar S50.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough the Seestar already has a built-in LPS filter for light pollution, in Astrophotography it is often required to use narrowband filters particularly when photographing nebula regions of the galaxy that are rich in Hydrogen Alpha. This adapter allows the use of individual 2\" nebula filters, so you can optimally adapt them to your Seestar S50 for Astro photography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpec:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for: Seestar S50 from ZWO\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuitable for: 2\" mounted filters\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaterial: PETG with UV resistance\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturing method: 3D printing (FDM\/FF)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensional stability: up to 80°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli style=\"font-style: italic;\"\u003e\n\u003cem\u003e2\" filter holder - \u003c\/em\u003e\u003cem\u003e* Filters not included.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"font-style: italic;\"\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003e\u003cem\u003eImportant: Please remove the Filter Adapter \u003cspan style=\"text-decoration: underline;\"\u003eBEFORE\u003c\/span\u003e you 'Home' and shut-Down the Seestar to avoid damage to the Telescope body or gearing.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astroprints","offers":[{"title":"Default Title","offer_id":54058650435919,"sku":"Seestar-Filter","price":39.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/SeestarS50FilterHolder_3.jpg?v=1735044924"},{"product_id":"ts-filter-storage-case","title":"Baader Planetarium  Filter Storage Case","description":"\u003cp\u003eYou Astronomy and Astrophotography filters are an important and yet delicate part of your setup, so keeping them safe and clean is very important.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis increases the longevity of the filter and if you have multiple single filters then these cases are designed to be securely stackable together to create a convenient multiple storage solution for all of your filters  so you can quickly swap them out when needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpec:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBaader-Filterbox for Filters up to 65 x 65mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOuter measurements without slits, grip and hanger (Width x Length x Height): 74.5 x 73 x 21.5mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInner space: 67 x 68mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eA single filter case\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c!----\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":54671036383567,"sku":"2459253","price":7.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/BaaderPlanetariumFilterBoxes_1.jpg?v=1742141712"},{"product_id":"optolong-l-synergy-dual-narrowband-filter-2","title":"Optolong L-Synergy Dual Narrowband Filter - 2\"","description":"\u003cp\u003eThe core innovation of L-Synergy filters lies not in a single functional breakthrough, but rather in the precise combination of traditional dual-narrowband (Ha \u0026amp; OIII) technology—specifically designed for color Astronomy cameras. By adopting a dual-filter setup of \"Ha \u0026amp; OIII + SII \u0026amp; OIII\", it overcomes the inherent limitations of color cameras in narrowband astrophotography. With L-Synergy, users can achieve Hubble Palette-style deep-sky images comparable to those captured by monochrome SHO (SII\/Ha\/OIII) systems—without switching to a monochrome camera or purchasing additional SHO filters.\u003c\/p\u003e\n\u003cp\u003eThis solution delivers high-quality results with minimal investment, making professional-level narrowband imaging accessible to all.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eOptolong L-Synergy is a dual 7nm narrowband filter compatible with DSLR cameras, color CMOS sensors, and CCD cameras, supporting telescope systems with an F-ratio of F3.3 or above (i.e slower systems）. Its key advantage lies in enabling astrophotographers to capture exceptionally detailed emission nebulae even in light-polluted environments.\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Synergy's advantage lies in its selective transmission of only the nebula emission lines OIII (500.7nm) and SII (672.4nm), while blocking all other light-polluting emission lines. This ensures that only the signals from oxygen and sulfur elements are captured during imaging, resulting in a darker sky background and significantly enhanced contrast and signal-to-noise ratio (SNR) between nebulae.\u003c\/p\u003e\n\u003cp\u003eEven in heavily light-polluted areas, this filter selectively transmits nebula emission lines while filtering out light pollution, ultimately eliminating its impact on astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2\" low-profile filter holder suitable for filter drawers and filter wheels - with M48x0.75 filter thread.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe filter has a very narrow bandwidth of only 7 nm at O-III and S-II and ensures very high contrast.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuitable for telescopes from F3.3 and slower.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAreas of light pollution are completely blocked, making successful deep-sky photography possible even near cities.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBest possible anti-reflection coating to prevent halos around stars.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe filter is suitable for mono and color cameras.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDelivered in sturdy plastic packaging.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpec:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter size: 2\" mounted\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMount height: 5mm without external thread, 7mm with M48 thread\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSubstrate: High-quality optical glass (Schott)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSurface: Finely polished\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFilter type: Dual bandpass filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTransmission ranges: O-III and S-II - 7 nm bandwidth\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFilter thickness: 2mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eOptolong 2\" L-Synergy Filter\u003c\/li\u003e\n\u003cli\u003eProtective box, foam lined\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":56206941389135,"sku":"L-Synergy2","price":310.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/Optolong-Synergy_4.jpg?v=1761112189"},{"product_id":"zwo-asi-1-25-adapter-ring","title":"ZWO ASI Adapter ring for 1.25\" filters","description":"\u003cp\u003eZWO Filter Adapter for 1.25\" mounted filters.\u003cbr\u003eThis is an extremely easy and effective way to insert 1.25\" filters into the light path of various Astro-cameras with a T2 Mount. Screw the 1.25\" filter of choice into the adapter and then screw the adapter into the T2 connection thread of your camera then attach the camera to your telescope. \u003c\/p\u003e\n\u003cp\u003eThis adapter fits to all CCD and CMOS cameras with T2-mount and the female thread is suitable for all mounted 1.25\" filters.\u003c\/p\u003e\n\u003cp\u003eNote: Adapters such as T-Mount Photography Camera Adapters may interfere with the filter and are therefore not recommended for use. If you are using a T-Mount adapter then screw the filter directly into the 1.25\" barrel of the adapter and this filter adapter is not necessary.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpec:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTelescope side connection: 1.25\" barrel\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCamera side connection: T-thread (M42x0.75) male adapter.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaterial: Metal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli style=\"font-style: italic;\"\u003e\u003cem\u003e1x Filter adapter plate.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":56373267857743,"sku":"ASIT2125","price":26.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/ASI-Filter-Adapter-Ring_2.jpg?v=1762710670"},{"product_id":"vespera-dual-narrowband-filter","title":"Vespera Dual Narrowband Filter","description":"\u003cp\u003eThe Vespera Dual Band Filter is a dual narrowband filter that will significantly improve your photo quality whether you are viewing from an urban or a dark sky environment. \u003c\/p\u003e\n\u003cp\u003eBy only allowing light which are very precisely the wavelengths of Hydrogen Alpha (H-alpha) and Oxygen III (O-III), found mainly in deepspace nebulae, the filter will increase the contrast between the object and the sky background. Therefore, using it makes it possible to obtain a higher-quality image, with sharper stars and finer details.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKeep only the essential:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Dual Band filter has been designed to allow only two particular wavelengths of light to pass through to the Vespera sensor:\u003cbr\u003e- O-III\u003cbr\u003e- H-alpha\u003c\/p\u003e\n\u003cp\u003eDue to the filtered wavelengths, it is particularly effective for photographing nebulae in emission (e.g.: Orion nebula M42, Heart nebula IC 1805 etc.), dark nebulae endowed with hydrogen (e.g.: Horsehead or Elephant's Trunk nebula etc.), planetary nebulae (e.g.: Owl nebula M97, Dumbbell nebula M27 etc.), supernova remnants (e.g.: Veil nebula, Crab Nebula etc.).\u003c\/p\u003e\n\u003cp\u003eFor globular clusters (e.g.: Hercules cluster M13, cluster M92...), the selectivity of the Dual Band filter will help you to obtain sharper stars. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA filter specifically researched for Vespera:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe optical quality of the Dual Band filter has been specifically studied by Vaonis engineers to offer use at full aperture, without any impact on the optical diameter of the instrument. The lens ring is equipped with an electronic microchip that allows Vespera to detect the Dual Band filter and automatically adapt its observation and image processing parameters accordingly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTransmission curve:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe filter features 12nm of bandwidth in each wavelength (O-III = 500.7nm, H-alpha = 656.3nm).\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli style=\"font-style: italic;\"\u003e\u003cem\u003eVespera Dual Narrowband Filter\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Vaonis","offers":[{"title":"Default Title","offer_id":56540436726095,"sku":"AC022","price":399.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/VesperaDualBandFilter_1.jpg?v=1764697018"},{"product_id":"vespera-cls-light-pollution-filter","title":"Vespera CLS Light Pollution Filter","description":"\u003cp\u003eThe Vespera light pollution filter or CLS (City Light Suppression) filter allows you to improve the quality of your photos when observing in the city or suburbs. It attenuates the effects of light pollution and therefore increases the contrast between the celestial object being photographed and the background sky.\u003c\/p\u003e\n\u003cp\u003eThe broadband filter blocks Na (sodium) and Hg (mercury) wavelengths mainly emitted by urban street lighting or undesirable natural light (atmospheric oxygen radiation, etc.), while allowing the main wavelengths from celestial objects to pass through the filter to the camera sensor.\u003c\/p\u003e\n\u003cp\u003eThe CLS filter is particularly useful for improving the brightness of deep sky objects such as nebulae, star clusters \u0026amp; galaxies etc. \u003c\/p\u003e\n\u003cp\u003eDesigned specifically for the Vespera lens, it fits easily and discreetly into the optical arm. The lens ring that holds the CLS filter is equipped with an electronic chip that allows Vespera to detect it when its installed.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli style=\"font-style: italic;\"\u003e\u003cem\u003eVespera CLS Light Pollution Filter\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Vaonis","offers":[{"title":"Default Title","offer_id":56540470542671,"sku":"AC023","price":229.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/VesperaCLSFilter_1.jpg?v=1764697499"},{"product_id":"vespera-solar-filter","title":"Vespera Solar Filter","description":"\u003cp\u003eAstronomer by night, astronomer by day! Observe our Sun, the closest star to planet Earth during the day with the Vespera solar filter. The filter allows you to observe sunspots (dark spots) that show the intensity of the Sun's activity as well as amazing captures of solar eclipses.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePhotograph the Sun with Vespera:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Solar Mode allows you to observe the Sun in almost real-time using the live display. Capture photos at any time from the Observation tab of the Singularity mobile app.\u003c\/p\u003e\n\u003cp\u003eTake several shots at different times of the day, week or month and compare your photos. Witness how the Sun's activity changes with the appearance or disappearance of sunspots. These can have a life span of several days, more rarely several weeks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eObserve safely:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe filter is made of glass with a dimming effect. It will reduce the amount of light and allow you to observe the Sun in a way that is safe for your Telescope and camera sensor. You will be guided through every step of your adventure by the Solar Mode of the Vaonis Singularity app, to ensure the observation runs smoothly and that you and your instrument are safe.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eWARNING\u003c\/span\u003e: Always install the Solar Filter \u003cspan style=\"text-decoration: underline;\"\u003eBefore\u003c\/span\u003e pointing your telescope towards the Sun.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli style=\"font-style: italic;\"\u003e\u003cem\u003eVespera Solar Filter\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Vaonis","offers":[{"title":"Default Title","offer_id":56540561637711,"sku":"AC021","price":179.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/VaonisSolarFilter_2.jpg?v=1764698377"},{"product_id":"leviathan-spectral-pro-light-pollution-filter-2","title":"Leviathan Spectral PRO Light Pollution Filter - 2\"","description":"\u003cp\u003e\u003cstrong\u003eDesigned \u0026amp; Manufactured in Europe - The LEVIATHAN Spectral Pro is a next-generation light pollution suppression filter, designed using real-world spectral data from cities right across the globe. It selectively blocks actual skyglow sources while preserving the critical emission bands used in deep-sky imaging.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLight Pollution is becoming an increasing problem for Astronomers and Astrophotographers around the world and a premium quality light pollution filter is without a doubt becoming an absolute essential tool in your Astronomy kit, particularly if you are also an Astrophotographer living in a high Bortle scale region.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eSo what makes the Leviathan Pro filter so different:  \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSelective Bandpass:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Spectral PRO very successfully blocks dominant LED, metal halide, and sodium light pollution bands and selectively allows just optimal emission lines, galactic spectra including dust, and reflection nebula spectra through the filter. This filter has been thoroughly optimized through rigorous laboratory testing and even real-sky validation tests.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e*\u003c\/strong\u003e\u003c\/span\u003e In fact just take a look at some of the real sky examples in the photo gallery to see just how effective this light pollution filter can be.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized for Fast f\/2 Systems:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFast optical systems (like Hyperstar, Rokinon\/Samyang, or f\/2 astrographs) often suffer from reduced filter performance due to steep angles of incidence. The Spectral Pro is specifically engineered to address these conditions -\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaintains \u0026gt;95% transmission at f\/2.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMinimizes band shift and edge roll-off\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDelivers consistent spectral response across the entire image circle\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThis ensures wide-field, fast-ratio imaging systems perform at their full potential without introducing artifacts or contrast loss.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHalo-Free Imaging by Design:\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003eMany filters suffer from internal reflections and as a result bright star halos, especially around emission-line targets like Sirius or Vega. The Spectral Pro eliminates these issues through -\u003c\/p\u003e\n\u003cp\u003eA precision coating design and manufacturing to suppress internal reflections\u003cbr\u003eOptical-grade polishing and flatness to minimize back-reflection paths\u003cbr\u003eCareful substrate selection and coating stack design to avoid ghosting\u003cbr\u003eThe result: Clear, clean star profiles—even around the brightest stars in the sky.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOne Filter to Rule Them All:\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003eThis is not just a typical broadband or narrowband filter. The Spectral Pro is a hybrid spectral design that works across a wide range of targets and environments. No need for -\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter wheels\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMonochrome sensors\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eComplex stacking and masking\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMinimized gradients and simplified post processing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWhether you're imaging nebulae, galaxies, or Milky Way panoramas, the Spectral\u003c\/li\u003e\n\u003cli\u003ePro delivers a consistent, high-contrast result from city suburbs to dark sites.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eZero-Compromise Optical Design:\u003c\/strong\u003e\u003cbr\u003eMany filters on the market induce corner vignetting, especially on full-frame sensors because they use undersized glass or poorly designed filter mounts. The Spectral Pro is -\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSimulated in full optical design software\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTested across a wide range of systems\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptimized to reduce mechanical and optical vignetting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIf any vignetting remains, it’s likely due to non-uniform illumination inherent in your optical train—not from the filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile in Advanced Setups:\u003c\/strong\u003e\u003cbr\u003eThanks to its spectral neutrality and optical precision, the Spectral Pro also functions as a luminance filter in monochrome or narrowband setups. Should you change your setup in the future or decide to combine OSC broadband data with narrowband data, the Spectral Pro will always remain an important part of your Astrophotography setup.\u003cbr\u003e\u003cbr\u003eView the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/Leviathan_Spectral_Pro_Datasheet.pdf?v=1771357944\" rel=\"noopener\" target=\"_blank\"\u003eSpectral PRO Datasheet Here\u003c\/a\u003e\u0026gt;\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Dimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(unmounted version) 47mm\u003c\/li\u003e\n\u003cli\u003eFilter thickness: 2mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cem\u003e1 x Spectral Pro Filter 2\"\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Leviathan Optical","offers":[{"title":"2\" Mounted","offer_id":57055869665615,"sku":"SPECTRA2-M","price":879.0,"currency_code":"EUR","in_stock":true},{"title":"2\" Unmounted","offer_id":57055869698383,"sku":"SPECTRA2-UN","price":789.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/Leviathan_Spectral_PRO_Filter_1.jpg?v=1771355198"},{"product_id":"leviathan-spectral-pro-light-pollution-filter-1-25-copy","title":"Leviathan Spectral PRO Light Pollution Filter - 1.25\"","description":"\u003cp\u003e\u003cstrong\u003eDesigned \u0026amp; Manufactured in Europe - The LEVIATHAN Spectral Pro is a next-generation light pollution suppression filter, designed using real-world spectral data from cities right across the globe. It selectively blocks actual skyglow sources while preserving the critical emission bands used in deep-sky imaging.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLight Pollution is becoming an increasing problem for Astronomers and Astrophotographers around the world and a premium quality light pollution filter is without a doubt becoming an absolute essential tool in your Astronomy kit, particularly if you are also an Astrophotographer living in a high Bortle scale region.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eSo what makes the Leviathan Pro filter so different:  \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSelective Bandpass:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Spectral PRO very successfully blocks dominant LED, metal halide, and sodium light pollution bands and selectively allows just optimal emission lines, galactic spectra including dust, and reflection nebula spectra through the filter. This filter has been thoroughly optimized through rigorous laboratory testing and even real-sky validation tests.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e*\u003c\/strong\u003e\u003c\/span\u003e In fact just take a look at some of the real sky examples in the photo gallery to see just how effective this light pollution filter can be.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized for Fast f\/2 Systems:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFast optical systems (like Hyperstar, Rokinon\/Samyang, or f\/2 astrographs) often suffer from reduced filter performance due to steep angles of incidence. The Spectral Pro is specifically engineered to address these conditions -\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaintains \u0026gt;95% transmission at f\/2.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMinimizes band shift and edge roll-off\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDelivers consistent spectral response across the entire image circle\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThis ensures wide-field, fast-ratio imaging systems perform at their full potential without introducing artifacts or contrast loss.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHalo-Free Imaging by Design:\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003eMany filters suffer from internal reflections and as a result bright star halos, especially around emission-line targets like Sirius or Vega. The Spectral Pro eliminates these issues through -\u003c\/p\u003e\n\u003cp\u003eA precision coating design and manufacturing to suppress internal reflections\u003cbr\u003eOptical-grade polishing and flatness to minimize back-reflection paths\u003cbr\u003eCareful substrate selection and coating stack design to avoid ghosting\u003cbr\u003eThe result: Clear, clean star profiles—even around the brightest stars in the sky.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOne Filter to Rule Them All:\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003eThis is not just a typical broadband or narrowband filter. The Spectral Pro is a hybrid spectral design that works across a wide range of targets and environments. No need for -\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter wheels\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMonochrome sensors\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eComplex stacking and masking\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMinimized gradients and simplified post processing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWhether you're imaging nebulae, galaxies, or Milky Way panoramas, the Spectral\u003c\/li\u003e\n\u003cli\u003ePro delivers a consistent, high-contrast result from city suburbs to dark sites.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eZero-Compromise Optical Design:\u003c\/strong\u003e\u003cbr\u003eMany filters on the market induce corner vignetting, especially on full-frame sensors because they use undersized glass or poorly designed filter mounts. The Spectral Pro is -\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSimulated in full optical design software\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTested across a wide range of systems\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptimized to reduce mechanical and optical vignetting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIf any vignetting remains, it’s likely due to non-uniform illumination inherent in your optical train—not from the filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile in Advanced Setups:\u003c\/strong\u003e\u003cbr\u003eThanks to its spectral neutrality and optical precision, the Spectral Pro also functions as a luminance filter in monochrome or narrowband setups. Should you change your setup in the future or decide to combine OSC broadband data with narrowband data, the Spectral Pro will always remain an important part of your Astrophotography setup.\u003c\/p\u003e\n\u003cp\u003eView the \u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/Leviathan_Spectral_Pro_Datasheet.pdf?v=1771357944\" target=\"_blank\"\u003eSpectral PRO Datasheet Here\u003c\/a\u003e\u0026gt; \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Dimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(unmounted version) 27.7mm\u003c\/li\u003e\n\u003cli\u003eFilter thickness: 2mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eWhats included:\u003c\/em\u003e\u003cbr\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cem\u003e1 x Spectral Pro Filter 1.25\"\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Leviathan Optical","offers":[{"title":"1.25\" Mounted","offer_id":57056018268495,"sku":"SPECTRA125-M","price":415.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/files\/Leviathan_Spectral_PRO_Filter_1.jpg?v=1771355198"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/1924\/6275\/collections\/istockphoto-898232898-1024x1024_db93e69c-6393-4f2a-beca-72387227ea66.jpg?v=1779096941","url":"https:\/\/www.horizonastronomy.ie\/en-cy\/collections\/filter-wheels-accessories.oembed","provider":"Horizon Astronomy • Telescope Center","version":"1.0","type":"link"}