{"product_id":"askar-fra500-90mm-f-5-6-quintuplet-apo-refractor-pre-owned-like-new","title":"Askar FRA500 90mm f\/5.6 Quintuplet APO Refractor Pre-Owned Like New","description":"\u003cp\u003eAskar FRA500 90mm f\/5.6 Quintuplet APO Refractor OTA Pre-Owned Like New\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eOverview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eExperience premium wide-field astrophotography with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAskar FRA500 90mm f\/5.6 Quintuplet APO Refractor\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. This pre-owned telescope is in \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elike-new condition\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.. Featuring a sophisticated five-element Petzval optical design, the FRA500 delivers a naturally flat field without requiring an external field flattener, making it an excellent choice for both dedicated astro-imagers and visual observers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhether you're capturing expansive nebulae, galaxies, or star fields, the FRA500 provides exceptional color correction, sharp stars across the frame, and outstanding optical performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eCondition\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCondition:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Pre-Owned – Like New\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptics are clean and free from scratches, haze, fungus, or coating defects.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExterior shows little to no cosmetic wear.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFocuser operates smoothly and precisely.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFully tested and ready for use.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e90mm apochromatic quintuplet refractor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e500mm focal length\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFast f\/5.6 focal ratio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBuilt-in flat-field Petzval optical design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLarge image circle suitable for full-frame cameras\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision dual-speed rack-and-pinion focuser\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExcellent color correction with pinpoint stars across the field\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIdeal for astrophotography and wide-field visual observing\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAperture: 90mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFocal Length: 500mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFocal Ratio: f\/5.6\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptical Design: Quintuplet APO Petzval\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImage Circle: Up to 55mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTube Material: CNC-machined aluminum\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDual-speed precision focuser\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible with DSLR, mirrorless, CMOS, and CCD imaging systems\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eIncluded\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAskar FRA500 90mm f\/5.6 Optical Tube Assembly (OTA)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCNC Tube Rings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCarry Handle\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLosmandy-Style Dovetail Plate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOriginal Aluminum Hard Carrying Case\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOriginal Accessories (as shown)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"oc telescope","offers":[{"title":"Default Title","offer_id":48691050905854,"sku":null,"price":1749.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2129\/9429\/files\/IMG_2198_1741934c-c5e1-4fd7-ad3c-92bbd270cb97.jpg?v=1785961787","url":"https:\/\/octelescope.com\/products\/askar-fra500-90mm-f-5-6-quintuplet-apo-refractor-pre-owned-like-new","provider":"oc telescope","version":"1.0","type":"link"}