{"product_id":"astronomik-h-alpha-12nm-xt-clip-filter","title":"Astronomik H-alpha 12nm XT Clip-Filter","description":"\u003c!-- Astronomik H-alpha 12nm XT Clip-Filter — Shopify Product Description --\u003e\n\u003c!-- Paste this into your Shopify product description (HTML editor) --\u003e\n\n\u003cdiv class=\"product-description\"\u003e\n\n\u003cp\u003eThe Astronomik H-alpha 12nm XT Clip-Filter is a premium narrowband emission-line filter engineered for imaging hydrogen nebulae from both light-polluted and dark observation sites. It isolates the H-alpha emission line at 656nm, dramatically enhancing contrast between hydrogen-alpha-emitting objects and the sky background — while blocking sodium (Na) and mercury (Hg) vapour lamp emissions, LED light maxima, natural airglow, and moonlight from UV through IR.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eXT (Extra Thin)\u003c\/strong\u003e version is coated on an ultra-thin 0.3–0.5mm substrate, specifically designed for wide-angle lens astrophotography. This significantly reduces optical aberrations that standard clip-filters can introduce at the edges of widefield images, delivering sharp, crisp stars all the way to the corners.\u003c\/p\u003e\n\n\u003cp style=\"color:#b13b3c; font-weight:bold;\"\u003e⚠ WARNING: This filter MUST NOT be used for solar observation.\u003c\/p\u003e\n\n\u003ch3\u003eWhy 12nm FWHM?\u003c\/h3\u003e\n\n\u003cp\u003eThe 12nm Full-Width-Half-Maximum bandpass is the ideal choice for DSLR and mirrorless cameras with CMOS sensors, CCD cameras with normal-to-high dark current, and imaging from suburban or dark-sky locations. It also passes more guide stars than narrower alternatives (6nm \/ 4nm), making it the preferred option for cameras with integrated or dual guiding sensors. In low light-pollution areas, the background signal is typically limited by sensor dark current rather than skyglow — so a narrower FWHM provides no additional benefit.\u003c\/p\u003e\n\n\u003ch3\u003eChoose Your Coating: MFR or MaxFR\u003c\/h3\u003e\n\n\u003cp\u003eBoth coatings deliver exceptional out-of-band blocking from UV to IR, extremely high contrast, minimised stray light, zero halos, and needle-sharp stars.\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eCoating\u003c\/th\u003e\n      \u003cth\u003eOptimal Aperture Range\u003c\/th\u003e\n      \u003cth\u003eBest For\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eMFR\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003ef\/3 to f\/∞\u003c\/td\u003e\n      \u003ctd\u003eAll-round use — telescopes and lenses at moderate to slow focal ratios\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eMaxFR\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003ef\/1.7 to f\/8 (≈85% transmission at f\/1.4)\u003c\/td\u003e\n      \u003ctd\u003eUltra-fast optical systems — fast camera lenses and fast astrographs\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eMaxFR variants are available for Canon EOS R, Nikon Z, Nikon XL, and Sony Alpha 7 mounts.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eChoose Your Camera Mount\u003c\/h3\u003e\n\n\u003cp\u003eSelect the clip-filter variant that matches your camera body. Each clips directly into the camera's lens mount — no tools, no camera modifications, no adapters required. All lens functions (focus, aperture, image stabilisation) remain fully operational.\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eVariant\u003c\/th\u003e\n      \u003cth\u003eCamera System\u003c\/th\u003e\n      \u003cth\u003eAvailable Coatings\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEOS APS-C\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eCanon EOS APS-C DSLRs (7D, 20D–90D, 100D–4000D series, Rebel series) \u0026amp; EOS M via EF-M adapter\u003c\/td\u003e\n      \u003ctd\u003eMFR\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEOS M\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eCanon EOS M mirrorless (M, M2, M3, M5, M6, M6 II, M10, M50, M100, M200)\u003c\/td\u003e\n      \u003ctd\u003eMFR\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEOS R XL\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eCanon EOS R mirrorless full-frame (R, RP, R3, R5, R5 II, R6, R6 II, R8) \u0026amp; APS-C (R7, R10, R50, R100)\u003c\/td\u003e\n      \u003ctd\u003eMFR · MaxFR\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEOS XL\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eCanon EOS full-frame DSLRs (5D, 5D II, 5D III, 6D)\u003c\/td\u003e\n      \u003ctd\u003eMFR · MaxFR\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eNikon Z XL\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eNikon Z full-frame mirrorless (Z5, Z6\/II\/III, Z7\/II, Z8, Z9, Zf)\u003c\/td\u003e\n      \u003ctd\u003eMFR · MaxFR\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eNikon XL\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eNikon full-frame DSLRs (D750, D800, D810; D780 \u0026amp; D850 limited*)\u003c\/td\u003e\n      \u003ctd\u003eMFR · MaxFR\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eSony Alpha 7\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eSony Alpha 7 \u0026amp; Alpha 9 series (all full-frame E-mount variants)\u003c\/td\u003e\n      \u003ctd\u003eMFR · MaxFR\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003csmall\u003e* Nikon D780 \u0026amp; D850: after a firmware update, electronic-contact lenses require a workaround (tape over lens contacts) or use of manual-focus lenses \/ T-adapters only.\u003c\/small\u003e\u003c\/p\u003e\n\n\u003ch3\u003eAdvantages of the Clip-Filter Design\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eInstalls and removes in seconds — no tools or camera modifications needed, even in the dark\u003c\/li\u003e\n  \u003cli\u003eAll lens functions (focus, aperture, IS) remain fully operational\u003c\/li\u003e\n  \u003cli\u003eWorks with both camera lenses and telescopes\u003c\/li\u003e\n  \u003cli\u003eEliminates the cost of oversized front-mounted filters for large lenses\u003c\/li\u003e\n  \u003cli\u003eNo back-focus shift — unlike filter drawers or holders between body and lens\u003c\/li\u003e\n  \u003cli\u003eCompatible with fast astrographs (e.g. Vixen R200SS, Takahashi Epsilon) where filter wheels can't be used\u003c\/li\u003e\n  \u003cli\u003eDoubles as a sensor dust shield during long exposures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eXT (Extra Thin) Technology\u003c\/h3\u003e\n\n\u003cp\u003eStandard clip-filters can introduce star elongation in the outermost corners when used with very short focal length lenses. The XT series solves this with an ultra-thin 0.3–0.5mm substrate — significantly reducing aberrations while maintaining the highest optical quality: finely polished, striae-free, stress-free, bubble-free glass suitable for the most demanding imaging applications.\u003c\/p\u003e\n\n\u003cp\u003eXT filters use the same durable coating technology as all Astronomik filters — extremely scratch-resistant, humidity-proof, and backed by a \u003cstrong\u003e10-year warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFilter Type\u003c\/td\u003e\n      \u003ctd\u003eNarrowband H-alpha Emission Line\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCentral Wavelength\u003c\/td\u003e\n      \u003ctd\u003e656nm (H-alpha)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBandwidth (FWHM)\u003c\/td\u003e\n      \u003ctd\u003e12nm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eGuaranteed Transmission\u003c\/td\u003e\n      \u003ctd\u003e\u0026gt;90% at 656nm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTypical Transmission\u003c\/td\u003e\n      \u003ctd\u003e96% at 656nm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSubstrate Thickness (XT)\u003c\/td\u003e\n      \u003ctd\u003e0.3–0.5mm (ultra-thin)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOut-of-Band Blocking\u003c\/td\u003e\n      \u003ctd\u003eUV to IR\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOptical Quality\u003c\/td\u003e\n      \u003ctd\u003eDiffraction-limited, parfocal with all Astronomik filters\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCoating Durability\u003c\/td\u003e\n      \u003ctd\u003eScratch-resistant, humidity-proof, no aging effects\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eQuality Control\u003c\/td\u003e\n      \u003ctd\u003eIndividually measured on PerkinElmer spectrophotometer; spectral data on each box\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eWarranty\u003c\/td\u003e\n      \u003ctd\u003e10 years\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKnown Incompatibilities\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCanon EOS R mount:\u003c\/strong\u003e Not compatible with RF 35mm F1.8 IS Macro STM, RF 85mm F1.2L USM, Extender RF 1.4x, Extender RF 2x\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCanon EOS APS-C:\u003c\/strong\u003e Not compatible with Canon EF-S series lenses (third-party, M42, and T2 adapters are fine)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNikon Z:\u003c\/strong\u003e Not compatible with Nikon Z TC-2.0x teleconverter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCanon EOS Ra:\u003c\/strong\u003e Compatible but not recommended — the Ra shows strong halos around bright stars even without a filter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCanon EOS 5D Mark IV, 5DS, 5DS R, 6D Mark II:\u003c\/strong\u003e Not compatible with EOS XL clip-filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e1× Astronomik H-alpha 12nm XT Clip-Filter (in selected mount variant and coating)\u003c\/li\u003e\n  \u003cli\u003eHigh-quality protective filter box\u003c\/li\u003e\n  \u003cli\u003eIndividual spectral measurement data label\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Astronomik","offers":[{"title":"EOS APS-C","offer_id":44680952840261,"sku":"8h00kh","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"EOS XL","offer_id":44680952873029,"sku":"8h11uj","price":565.0,"currency_code":"AUD","in_stock":true},{"title":"EOS R XL","offer_id":44680952905797,"sku":"8h11u8","price":565.0,"currency_code":"AUD","in_stock":true},{"title":"EOS M","offer_id":44680952938565,"sku":"8h11j0","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7","offer_id":44680952971333,"sku":"8h11ua","price":565.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL","offer_id":44680953004101,"sku":"8h11um","price":565.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL","offer_id":44680953036869,"sku":"8h11uc","price":565.0,"currency_code":"AUD","in_stock":true},{"title":"EOS XL MaxFR","offer_id":44680953069637,"sku":"8h11uk","price":725.0,"currency_code":"AUD","in_stock":true},{"title":"EOS R XL MaxFR","offer_id":44680953102405,"sku":"8h11u9","price":725.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 MaxFR","offer_id":44680953135173,"sku":"8h11ub","price":725.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL MaxFR","offer_id":44680953167941,"sku":"8h11un","price":725.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL MaxFR","offer_id":44680953200709,"sku":"8h11ud","price":725.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/10203090_Astronomik_H-alpha-12nm_EOS-XT-Clip.jpg?v=1772665105","url":"https:\/\/bintel.com.au\/products\/astronomik-h-alpha-12nm-xt-clip-filter","provider":"The Binocular and Telescope Shop","version":"1.0","type":"link"}