{"product_id":"91073-8-rasa-ota","title":"91073 Celestron 8\" RASA - OTA (Pre-Order)","description":"\u003ch2\u003eAbout this item:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlat field free of optical aberrations like field curvature, coma, astigmatism and chromatic aberration across an entire APS-C sensor.\u003c\/li\u003e\n\u003cli\u003eUnlike the larger RASAs that work with DSLR and large CCD cameras, the 8” model was designed with color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras in mind. The telescope does not work with standard DSLR cameras.\u003c\/li\u003e\n\u003cli\u003eUltra-Stable Focus System – precision linear ball bearing virtually eliminates image shift.\u003c\/li\u003e\n\u003cli\u003eIntegrated air cooling system –12V DC MagLev fan reduces cooldown time and provides optimal air flow while filtering out dust.\u003c\/li\u003e\n\u003cli\u003eInternal filter mount – seamlessly accommodates a Light Pollution Imaging Filter into the optical path.\u003c\/li\u003e\n\u003cli\u003eCGE dovetail mounting rail.\u003c\/li\u003e\n\u003cli\u003ePerforms over a wider spectral range than most telescopes, from 400nm – 800nm, so more of the light passing through the astrograph is in sharp focus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications:\u003c\/h2\u003e\n\u003ctable class=\"table-open\" id=\"product-specs-list\" role=\"table\" aria-label=\"Product Specifications\" style=\"width: 100%; height: 950.7px;\"\u003e\n\u003cthead role=\"rowgroup\"\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"columnheader\" scope=\"col\" colspan=\"2\" style=\"width: 97.2174%; height: 19.6px;\"\u003eOptical Tube Info:\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody role=\"rowgroup\"\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eOptical Design:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003eRowe-Ackermann Schmidt Astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eAperture:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e203mm (8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eFocal Length:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e400mm (15.74\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eFocal Ratio:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003ef\/2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 39.2px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 39.2px; text-align: left;\"\u003eCentral obstruction diameter:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 39.2px;\"\u003e93mm (3.66\") (46% of aperture diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 58.8px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 58.8px; text-align: left;\"\u003eLight Gathering Power (Compared to human eye):\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 58.8px;\"\u003e843x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eResolution (Rayleigh):\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e0.68 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eResolution (Dawes):\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e0.57 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eImage Circle:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e22mm (.86\") Ø, 3.15°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 39.2px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 39.2px; text-align: left;\"\u003eUseable field:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 39.2px;\"\u003e32mm (1.26\") Ø, 4.6°, only minimal performance loss at edge of FOV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eWavelength range:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e400 - 800 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eSpot size:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e\u0026lt; 2.3 μm RMS across image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eOptical Coatings:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003eStarBright XLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eOff-axis Illumination:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e93% at 11mm (.43\") off-axis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eOptical Window:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e46mm (1.81\") Ø\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 58.8px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 58.8px; text-align: left;\"\u003eBack focus with included camera adapter:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 58.8px;\"\u003e25mm (.98\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 39.2px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 39.2px; text-align: left;\"\u003eBack focus from top of threaded collar:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 39.2px;\"\u003e29mm (1.14\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eOptical Tube:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eOptical Tube Length:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e628mm (24.7\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 39.2px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 39.2px; text-align: left;\"\u003eOptical Tube Diameter:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 39.2px;\"\u003e235mm (9.3\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eFocuser:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003ePrecision Bearing System (PBS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eFinderscope:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eOptical Tube Weight:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003e17 lbs (7.7 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eOther Features:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003eAir-cooling system, integrated filter mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 39.2px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 39.2px; text-align: left;\"\u003eIncluded items:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 39.2px;\"\u003e42mm (1.65\") T-thread camera adapter | C-thread camera adapter | Fan battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 19.6px; text-align: left;\"\u003eDovetail:\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 19.6px;\"\u003eCGE Dovetail Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cthead role=\"rowgroup\"\u003e\n\u003ctr role=\"row\" style=\"height: 19.6px;\"\u003e\n\u003cth role=\"columnheader\" scope=\"col\" colspan=\"2\" style=\"width: 97.2174%; height: 19.6px;\"\u003eAdditional Information\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody role=\"rowgroup\"\u003e\n\u003ctr role=\"row\" style=\"height: 225.5px;\"\u003e\n\u003cth role=\"rowheader\" scope=\"row\" style=\"width: 26.4696%; height: 225.5px; text-align: left;\"\u003eSolar Warning\u003c\/th\u003e\n\u003ctd role=\"cell\" style=\"width: 70.7478%; height: 225.5px;\"\u003e\n\u003cul class=\"solar-warning-text\"\u003e\n\u003cli\u003eNever look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result.\u003c\/li\u003e\n\u003cli\u003eNever use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.\u003c\/li\u003e\n\u003cli\u003eNever leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":43933599531095,"sku":"0500000","price":205999.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2176\/7207\/files\/910738RASA-OTA.jpg?v=1780974071","url":"https:\/\/cuttingedge.com.ph\/products\/91073-8-rasa-ota","provider":"Cutting Edge Online Store","version":"1.0","type":"link"}