{"product_id":"astronomik-h-alpha-12nm-maxfr-xt-clip-filters-eossonynikon","title":"Astronomik H-alpha 12nm MaxFR XT Clip-Filters - EOS\/Sony\/Nikon","description":"\u003cdiv class=\"product-detail-description-text\"\u003e\n\u003ch2\u003e\u003cspan\u003eAstronomik H-alpha 12nm MaxFR XT Clip-Filter\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cspan\u003eThe Astronomik H-alpha filter is ideal for imaging hydrogen nebulae. It works from both light-polluted and dark sites. It enhances contrast between objects at 656nm and the sky background. This h alpha filter blocks sodium and mercury lamp emissions. It also removes natural airglow and most moonlight. Note: this is not a hydrogen alpha solar filter — never use it for solar observation.\u003c\/span\u003e\n\u003cp\u003e\u003cspan\u003eWith a bandwidth of 12nm or 6nm, the filter blocks unwanted light. It covers wavelengths from UV to IR, outside 656nm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"color: #f10e0e;\"\u003e\u003cb\u003eThe Astronomik H-alpha filter MUST NOT BE USED for solar observation!\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eImaging with Astronomik Narrowband-Emissionline filters\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe Astronomik H-alpha filter is the best first step in narrowband astrophotography. It lets you shoot deep, contrasty images under heavy light pollution or a full moon. It is ideal for red-glowing nebulae. Astronomik OIII filters add greenish and blueish structures. Astronomik SII filter completes the HSO palette for false-color imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDifference between Astronomik H-alpha 12nm and 6nm filters\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/23\/97\/f8\/1715863002\/G_HA_12nm_u_6nm.png?1716895368=\u0026amp;width=700\" alt=\"G_HA_12nm_u_6nm.png?1716895368\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cb\u003e6nm filters\u003c\/b\u003e suit star-crowded regions. They halve the number of stars in the image. They are ideal for very low dark current cameras or extreme light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cb\u003e12nm filters\u003c\/b\u003e suit typical DSLR and CCD cameras. They also work well with cameras that have integrated guiding sensors.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDifference between Astronomik MFR and MaxFR coating\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eBoth coatings give excellent UV-to-IR blocking, high contrast, and sharp stars.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003e12nm MFR-coated filters\u003c\/b\u003e work from f\/3 to f\/∞.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003e6nm MFR-coated filters\u003c\/b\u003e work from f\/4 to f\/∞.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe MaxFR coating is designed to work perfectly with fast optical systems. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFor \u003cb\u003e12nm MaxFR filters\u003c\/b\u003e: unlimited use from f\/1.7 to f\/6. About 85% transmission at f\/1.4.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFor \u003cb\u003e6nm MaxFR filters\u003c\/b\u003e: unlimited use from f\/2.2 to f\/6. About 90% transmission at f\/2.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003eFilters for even faster optics are available on request.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDifference between Astronomik standard and XT Clip-Filters\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe Astronomik XT-Filters are designed for wide-angle astrophotography. Standard Clip-Filters can stretch stars in image corners. XT-Filters use a 0.3mm or 0.5mm substrate to reduce aberrations. They maintain the same high optical quality and durable coating. More information about our XT-Filters can be found here.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGuaranteed transmission \u0026gt;90% at the H-alpha line (656nm)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTypical transmission: 96% (12nm), 93% (6nm)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGlass thickness: 1mm (except OWB Type 3 and XT filters)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eFinely polished optical glass, free of striae, stresses, and bubbles\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eScratch-resistant and durable coating\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eResistant to humidity and aging\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eParfocal with other Astronomik filters\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eDiffraction-limited\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan\u003eDelivered in a high-quality filter box\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eEvery filter passes rigorous quality control. Each unit is measured with a PerkinElmer Spectrophotometer. Spectral data is printed on each filter box label.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/23\/97\/f8\/1715863002\/G_HA_12nm_u_6nm.png?1716895368=\u0026amp;width=700\" alt=\"G_HA_12nm_u_6nm.png?1716895368\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-detail-properties\"\u003e\n\u003cdiv class=\"row product-detail-properties-container\"\u003e\n\u003cdiv class=\"col-md-10 col-lg-6\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected frame size of Astronomik H-alpha 12nm CCD MaxFR Filter\u003c\/li\u003e\n\u003cli\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\"\u003e\u003cspan\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eAstronomik\u003cspan\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"EOS APS-C \/ MRF","offer_id":50729109586176,"sku":"hse1792665635633","price":175.87,"currency_code":"USD","in_stock":true},{"title":"EOS M \/ MRF","offer_id":50729109618944,"sku":"fbl1792665635634","price":191.08,"currency_code":"USD","in_stock":true},{"title":"EOS R XL \/ MRF","offer_id":50729109651712,"sku":"yoi1792665635635","price":261.03,"currency_code":"USD","in_stock":true},{"title":"EOS R XL \/ MaxFR","offer_id":50729109684480,"sku":"lyz1792665635636","price":385.04,"currency_code":"USD","in_stock":true},{"title":"EOS XL \/ MRF","offer_id":50729109717248,"sku":"gbk1792665635637","price":234.93,"currency_code":"USD","in_stock":true},{"title":"EOS XL \/ MaxFR","offer_id":50729109750016,"sku":"fys1792665635638","price":298.41,"currency_code":"USD","in_stock":true},{"title":"Nikon XL \/ MRF","offer_id":50729109782784,"sku":"icv1792665635639","price":227.47,"currency_code":"USD","in_stock":true},{"title":"Nikon XL \/ MaxFR","offer_id":50729109815552,"sku":"aoa1792665635640","price":298.41,"currency_code":"USD","in_stock":true},{"title":"Nikon Z XL \/ MRF","offer_id":50729109848320,"sku":"ugv1792665635641","price":264.76,"currency_code":"USD","in_stock":true},{"title":"Nikon Z XL \/ MaxFR","offer_id":50729109881088,"sku":"fgy1792665635642","price":365.79,"currency_code":"USD","in_stock":true},{"title":"Sony alpha 7 \/ MRF","offer_id":50729109913856,"sku":"wee1792665635643","price":290.86,"currency_code":"USD","in_stock":true},{"title":"Sony alpha 7 \/ MaxFR","offer_id":50729109946624,"sku":"jmo1792665635644","price":293.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0835\/9483\/8272\/files\/astronomik-h-alpha-12nm-maxfr-xt-clip-filters---eossonynikon_1.jpg?v=1792665643","url":"https:\/\/ribbedcladb.shop\/products\/astronomik-h-alpha-12nm-maxfr-xt-clip-filters-eossonynikon","provider":"My Store","version":"1.0","type":"link"}