{"product_id":"astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-sony-alpha-7","title":"Astronomik H-alpha 6nm CCD MaxFR Clip-Filter Sony Alpha 7","description":"\u003cp\u003eThe Astronomik MaxFR filter series was created for extreme compatibility with fast focal ratio telescopes such as those in the Celestron RASA series or Epsilon Astrographs from Takahashi. \u003c\/p\u003e \u003cp\u003eAvailable in both 6nm and 12nm versions, these filters have built-in MFG coating to provide the best possible blocking across the entire range of wavelengths from the UV up to IR. Thanks to this feature, these filters have incredibly high contrast, very little stray light, no halos, and, of course, perfectly sharp stars.\u003c\/p\u003e \u003cp\u003eThe 6nm MaxFR filters provide unlimited usability for focal ratios between f\/1.8 and f\/2.2 with roughly 90% transmission rates.\u003c\/p\u003e \u003cp\u003eThe 12nm MaxFR filters then perform best between focal ratios of 1.7 and 1.8 with at least 85% transmission rates while also being able to function at f\/1.4.\u003c\/p\u003e \u003cbr\u003e \u003cdiv style=\"text-align: center;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1594\/4815\/files\/G_HA_12nm_u_6nm_1024x1024.png?v=1665780505\"\u003e\u003c\/div\u003e \u003cbr\u003e \u003cp\u003eKey Features of the Astronomik MaxFR Filter Series:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMFR Coating for incredibly precise optical clarity.\u003c\/li\u003e \u003cli\u003eMade from a high-quality substrate in extremely thin layers.\u003c\/li\u003e \u003cli\u003eAll Astronomik filters are parfocal so you can swap with freedom!\u003c\/li\u003e \u003cli\u003eExtremely scratch-resistant, not sensitive to moisture, and do not degrade with age.\u003c\/li\u003e \u003cli\u003eEffectively blocks light across the spectrum, leaving only the desired wavelengths.\u003c\/li\u003e \u003c\/ul\u003e \u003c!-- split --\u003e \u003cul\u003e \u003cli\u003ePerfect for fast focal length telescopes!\u003c\/li\u003e \u003cli\u003eExtremely scratch-resistant and parfocal with all Astronomik filters.\u003c\/li\u003e \u003cli\u003eAvailable in either 6nm or 12nm versions.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eThis is the 6nm H-alpha version\u003c\/strong\u003e\u003cstrong\u003e.\u003c\/strong\u003e\u003cbr\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003c!-- split --\u003e \u003cul\u003e \u003cli\u003eAstronomik H-alpha 6nm CCD MaxFR Clip-Filter Sony Alpha 7\u003c\/li\u003e \u003c\/ul\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":54066601263447,"sku":"AK-8H11F4","price":649.95,"currency_code":"NOK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/9178\/4535\/files\/AstronomikH-alpha6nmCCDMaxFRClip-FilterSonyAlpha7.jpg?v=1784383917","url":"https:\/\/fagerdahen.com\/products\/astronomik-h-alpha-6nm-ccd-maxfr-clip-filter-sony-alpha-7","provider":"fagerdahen","version":"1.0","type":"link"}