{"product_id":"askar-fra500-90mm-f-5-6-quintuplet-astrograph-with-zwo-eaf-used","title":"Askar FRA500 90mm f\/5.6 Quintuplet Astrograph with ZWO EAF – Used","description":"\u003ch3 data-section-id=\"1otm2cv\" data-start=\"0\" data-end=\"69\"\u003eAskar FRA500 90mm f\/5.6 Quintuplet Astrograph with ZWO EAF – Used Excellent Condition\u003c\/h3\u003e\n\u003cp data-start=\"71\" data-end=\"391\"\u003eThe Askar FRA500 is a premium 90mm Petzval astrograph designed to deliver pinpoint stars across the entire field without requiring a separate field flattener. With its 500mm focal length and fast f\/5.6 focal ratio, it's an excellent choice for capturing nebulae, galaxies, star clusters, and wide-field deep-sky targets.\u003c\/p\u003e\n\u003cp data-start=\"393\" data-end=\"585\"\u003eThis telescope comes equipped with a \u003cstrong data-start=\"430\" data-end=\"472\"\u003eZWO Electronic Automatic Focuser (EAF)\u003c\/strong\u003e, allowing for precise motorized focusing and seamless integration with ASIAIR and most popular imaging software.\u003c\/p\u003e\n\u003cp data-start=\"587\" data-end=\"600\"\u003e\u003cstrong data-start=\"587\" data-end=\"600\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"601\" data-end=\"944\"\u003e\n\u003cli data-section-id=\"30ebw1\" data-start=\"601\" data-end=\"616\"\u003e90mm aperture\u003c\/li\u003e\n\u003cli data-section-id=\"q2rwzq\" data-start=\"617\" data-end=\"637\"\u003e500mm focal length\u003c\/li\u003e\n\u003cli data-section-id=\"10vksoa\" data-start=\"638\" data-end=\"657\"\u003ef\/5.6 focal ratio\u003c\/li\u003e\n\u003cli data-section-id=\"3w595l\" data-start=\"658\" data-end=\"693\"\u003eQuintuplet Petzval optical design\u003c\/li\u003e\n\u003cli data-section-id=\"1qwh1x1\" data-start=\"694\" data-end=\"739\"\u003eBuilt-in flat field – no flattener required\u003c\/li\u003e\n\u003cli data-section-id=\"4l0umb\" data-start=\"740\" data-end=\"792\"\u003eLarge image circle suitable for full-frame cameras\u003c\/li\u003e\n\u003cli data-section-id=\"cuj3g3\" data-start=\"793\" data-end=\"823\"\u003ePrecision dual-speed focuser\u003c\/li\u003e\n\u003cli data-section-id=\"u2ut36\" data-start=\"824\" data-end=\"859\"\u003eRotating focuser for easy framing\u003c\/li\u003e\n\u003cli data-section-id=\"6pa272\" data-start=\"860\" data-end=\"907\"\u003eIncludes installed ZWO EAF electronic focuser\u003c\/li\u003e\n\u003cli data-section-id=\"4kyh31\" data-start=\"908\" data-end=\"944\"\u003eCNC-machined aluminum construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"946\" data-end=\"959\"\u003e\u003cstrong data-start=\"946\" data-end=\"959\"\u003eIncluded:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"960\" data-end=\"1086\"\u003e\n\u003cli data-section-id=\"1ykzwl4\" data-start=\"960\" data-end=\"978\"\u003eAskar FRA500 OTA\u003c\/li\u003e\n\u003cli data-section-id=\"1q2zt34\" data-start=\"979\" data-end=\"1006\"\u003eZWO EAF motor and bracket\u003c\/li\u003e\n\u003cli data-section-id=\"19kdgwf\" data-start=\"1007\" data-end=\"1019\"\u003eTube rings\u003c\/li\u003e\n\u003cli data-section-id=\"ht0jzg\" data-start=\"1020\" data-end=\"1036\"\u003eDovetail plate\u003c\/li\u003e\n\u003cli data-section-id=\"xliwdo\" data-start=\"1037\" data-end=\"1061\"\u003eRetractable dew shield\u003c\/li\u003e\n\u003cli data-section-id=\"1ej4xku\" data-start=\"1062\" data-end=\"1086\"\u003eOriginal carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1088\" data-end=\"1326\"\u003e\u003cstrong data-start=\"1088\" data-end=\"1102\"\u003eCondition:\u003c\/strong\u003e\u003cbr\u003eExcellent condition with clean optics and smooth focuser operation. The EAF is installed and ready for automated focusing, making this a turnkey imaging setup for ASIAIR, NINA, Voyager, and other astrophotography platforms.\u003c\/p\u003e\n\u003cp data-start=\"1328\" data-end=\"1550\"\u003eThe FRA500 has earned a strong reputation among astrophotographers for its sharp optics, flat field, and ease of use. Combined with the ZWO EAF, this package is ready to produce stunning deep-sky images with minimal setup.\u003c\/p\u003e","brand":"oc telescope","offers":[{"title":"Default Title","offer_id":48351428608254,"sku":null,"price":1799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2129\/9429\/files\/image3.jpg?v=1781222361","url":"https:\/\/octelescope.com\/products\/askar-fra500-90mm-f-5-6-quintuplet-astrograph-with-zwo-eaf-used","provider":"oc telescope","version":"1.0","type":"link"}