{"product_id":"daystar-filters-500mm-efl-80mm-f-6-25-ed-apo-refractor","title":"500mm EFL 80mm F\/6.25 ED APO Refractor","description":"\u003cul\u003e\r\n\u003cli\u003eED APO doublet objective lens system\u003c\/li\u003e\r\n\u003cli\u003eFully multi-coated optics ensures utmost light transmission\u003c\/li\u003e\r\n\u003cli\u003eFinely CNC machined aluminum body and focuser\u003c\/li\u003e\r\n\u003cli\u003eDeluxe high-gloss anodizing finish\u003c\/li\u003e\r\n\u003cli\u003eRetractable sunshade\u003c\/li\u003e\r\n\u003cli\u003eAccepts all 2” universal telescope eyepieces\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eED glass elements are fluorite-based and feature proprietary Metallic High-Transmission Coatings™, virtually eliminating all false color while dual-baffles prevent stray light from affecting your photography.\u003c\/p\u003e\r\n\u003cp\u003e\u003cbr\u003eThe Daystar 500mm refractor was selected for use on the National Solar Observatory’s “Citizen CATE” projects in 2017, 2024, and beyond!\u003c\/p\u003e\r\n\u003cp\u003eIncludes 90mm white light Universal Lens Filter\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\r\n\u003cli\u003eOptical design: Refractor\u003c\/li\u003e\r\n\u003cli\u003eAperture: 80mm\u003c\/li\u003e\r\n\u003cli\u003eFocal Length: 500mm\u003c\/li\u003e\r\n\u003cli\u003eFocal Ratio : f\/6\u003c\/li\u003e\r\n\u003cli\u003eLens: Apochromatic Doublet Refractors, Fully Multi-Coated\u003c\/li\u003e\r\n\u003cli\u003eGlass Type: Superior Extra-Low Dispersion Glass BK7\/FPL-53 (ED)\u003c\/li\u003e\r\n\u003cli\u003eAttachments: 2\" Rack \u0026amp; Pinion Hybrid Drive Focuser\u003c\/li\u003e\r\n\u003cli\u003eAluminum Carrying Case\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"DayStar Filters","offers":[{"title":"Default Title","offer_id":45910017769671,"sku":"1-04-001-0002","price":799.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/9575\/6487\/files\/1-04-001-0002-01.jpg?v=1764600544","url":"https:\/\/snowflakeskies.com\/products\/daystar-filters-500mm-efl-80mm-f-6-25-ed-apo-refractor","provider":"Snowflake Skies","version":"1.0","type":"link"}