{"product_id":"takahashi-fsq-80fc-astrograph","title":"TAKAHASHI FSQ-80FC ASTROGRAPH","description":"\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eTakahashi FSQ-80FC\u003c\/strong\u003e is a newly-designed \u003cstrong\u003eapochromatic Petzval quintuplet astrograph\u003c\/strong\u003e with uncompromising performance for wide-field deep sky imaging with modern CMOS sensors. \u003c\/p\u003e\n\u003cp\u003eWith \u003cstrong\u003etwo fluorite elements \u003c\/strong\u003ein the front triplet and rear doublet flattening optics, the FSQ-80FC combines the \u003cstrong\u003esuperior on-axis correction \u003c\/strong\u003eof the TOA series with the \u003cstrong\u003eflat field\u003c\/strong\u003e characteristics of the FSQ series.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ-80FC_details_1_800.jpg?v=1773020368\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe objective cell has been newly-designed to support the 5-element lens assembly, ensuring both optical precision and \u003cstrong\u003elong-term mechanical stability\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe FSQ-80FC has a \u003cstrong\u003efocal length of 450mm\u003c\/strong\u003e covering 5.6 degrees of sky and a \u003cstrong\u003efocal ratio of f\/5.6\u003c\/strong\u003e, making it the ideal instrument for capturing large nebulae. At prime focus, the telescope provides a \u003cstrong\u003e50mm image circle\u003c\/strong\u003e, comfortably covering full-frame sensors.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ-80FC_Lens.jpg?v=1773022747\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe RMS spot diameter (averaged across eleven wavelengths from 436 to 656nm) is \u003cstrong\u003e0.8μm\u003c\/strong\u003e at the centre,\u003cstrong\u003e 2.2μm\u003c\/strong\u003e at the edge of a full-frame sensor, and \u003cstrong\u003e3.0μm \u003c\/strong\u003eat the edge of the 50mm image circle. Additionally, illumination across the field is exceptional at 97% at the edge of a full-frame sensor.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ-80FC_details_7_1000.jpg?v=1773022767\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eNot only is the FSQ-80FC a high-end astrograph, but its chromatic correction and \u003cstrong\u003eextremely sharp on-axis performance \u003c\/strong\u003emakes it a \u003cstrong\u003eformidable visual telescope\u003c\/strong\u003e. Despite its relatively fast f\/5.6 focal ratio, the telescope achieves an on-axis \u003cstrong\u003eStrehl ratio of 99.7%\u003c\/strong\u003e, exceeding even the TOA series. Even at high magnifications, there is \u003cstrong\u003eno detectable colour fringing \u003c\/strong\u003ecaused by the telescope optics.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ-80FC_details_6.png?v=1773022790\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe focuser includes Takahashi's \u003cstrong\u003eMEF micro-focus unit \u003c\/strong\u003ewith 1:8 reduction ratio, resulting in smooth and precise focusing for both visual observation and astrophotography. A \u003cstrong\u003enew adapter ring system \u003c\/strong\u003ewith male M48 x 0.75 and M54 x 0.75 thread adapters and 55mm backfocus allow \u003cstrong\u003eeasy connection to common modern imaging systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eMatching \u003cstrong\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.testar.com.au\/collections\/tube-rings\/products\/95mm-plus-support-rings\" target=\"_blank\"\u003e95mm tube rings from Prima Luce Lab\u003c\/a\u003e \u003c\/strong\u003eare also available, allowing you to take full advantage of their \u003cstrong\u003ePLUS universal system\u003c\/strong\u003e for connecting a multitude of accessories.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote: does not include tube rings or a dovetail bar. \u003c\/strong\u003e\u003cspan\u003eFor the FSQ-80FC, you can use the \u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.testar.com.au\/collections\/tube-rings\/products\/95mm-plus-support-rings\" target=\"_blank\"\u003ePrimaLuceLab 95mm PLUS tube rings\u003c\/a\u003e \u003cspan\u003ein combination with the \u003c\/span\u003e\u003ca href=\"https:\/\/www.testar.com.au\/collections\/losmandy-dovetail-bars\/products\/prima-luce-lab-losmandy-bar-medium-1\" target=\"_blank\"\u003ePrimaLuceLab 240mm Losmandy bar\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ-80FC_details_3_1000.jpg?v=1773022812\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable class=\"specificationTable\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eOptical design\u003c\/th\u003e\n\u003ctd\u003eDouble Fluorite Apochromat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eLens cell\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003eQuintuplet with 5 lenses in 5 groups, 2 x Fluorite lenses\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eCoatings\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003eHard multicoatings\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eObjective diameter\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003e80 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eFocal length at prime focus\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003e450 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eFocal ratio at prime focus\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003eF\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eBackfocus distance at prime focus\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003e159 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eTube diameter\u003c\/th\u003e\n\u003ctd\u003e95 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eDew shield diameter\u003c\/th\u003e\n\u003ctd\u003e114 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eTube length\u003c\/th\u003e\n\u003ctd\u003e559 mm with dew shield extended, 486 mm with dew shield retracted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eTube weight\u003c\/th\u003e\n\u003ctd\u003e4.1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eTQE08041\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eItems included\u003c\/h5\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFSQ-80FC OTA\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTKP37001 - Coupling DT (FSQ-85ED)\u003c\/li\u003e\n\u003cli\u003eTKA23200N - CAA-M\u003c\/li\u003e\n\u003cli\u003eTKA23250 - Aux Ring FB 52mm\u003c\/li\u003e\n\u003cli\u003eTKP00005 - M48 Visual Adapter\u003c\/li\u003e\n\u003cli\u003eTKP00200 - M72-M48 CMOS Adapter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTKP00101 - Ocular Adapter (31.7)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cbr\u003e\u003c\/h5\u003e\n\u003ch5\u003eDownloads\u003cbr\u003e\n\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" style=\"width: 55.9146%; margin-left: auto; margin-right: auto;\" class=\"MsoNormalTable\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22px;\"\u003e\n\u003ctd style=\"background: #f1f1f1; padding: 5.5pt; width: 100%; height: 22px;\"\u003e\n\u003ca title=\"ZWO specification sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/ZWO_Specification_Sheet.pdf?3962\" target=\"_blank\"\u003e\u003cimg height=\"26\" width=\"27\" alt=\"PDF Icon Small\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/pdf-small.gif?v=1579763261\"\u003e\u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ80FC.pdf?v=1773022098\" target=\"_blank\"\u003eFSQ-80FC instruction manual\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 14.6298px;\"\u003e\n\u003ctd style=\"padding: 5.5pt; width: 100%; height: 14.6298px;\"\u003e\n\u003cp style=\"margin-bottom: .0001pt; line-height: normal;\"\u003e\u003ca title=\"ZWO manual\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/ZWO_ASI120_Manual_EN.pdf?3963\" target=\"_blank\"\u003e\u003cimg height=\"26\" width=\"27\" alt=\"PDF Icon Small\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/pdf-small.gif?v=1579763261\"\u003e\u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ80FC_PhotoVisual_System_Chart.pdf?v=1773022097\" target=\"_blank\"\u003eFSQ-80FC system chart\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ85EDX_PhotoVisual_System_Chart.pdf?v=1682580334\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Testar Australia","offers":[{"title":"Default Title","offer_id":48059140964577,"sku":"TK-TQE08041","price":7299.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/FSQ-80FC_1_1000.jpg?v=1773022827","url":"https:\/\/www.testar.com.au\/products\/takahashi-fsq-80fc-astrograph","provider":"Testar Australia","version":"1.0","type":"link"}