{"title":"Ritchey-Chrétien","description":"\u003cp\u003eA Ritchey-Chrétien is a Cassegrain telescope with two hyperbolic mirrors, which removes coma and gives a flat, sharp field well suited to deep-sky imaging of galaxies and small nebulae. The iOptron RC6, RC8 and RC10 cover 6 to 10 inches of aperture, and the Photron RC10 truss tube offers the 10-inch in a lighter open-truss design. Most imagers add a field flattener for larger sensors; see \u003ca href=\"\/collections\/flatteners-and-reducers\"\u003eFlatteners, Reducers \u0026amp; Correctors\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"ioptron-6-inch-ritchey-chretien-telescope-rc6","title":"iOptron 6 inch Ritchey-Chretien Telescope (RC6)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan class=\"MsoSubtleEmphasis\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe iOptron Ritchey-Cretien design telescopes, feature low thermal expansion quartz primary and secondary mirrors with ninety-nine percent reflective dietetic coatings. The RC optical design delivers coma, spherical and chromatic aberration free results, perfect for color or monochrome imaging. A fixed position primary mirror eliminates image shift that occurs from focusing with other telescope designs. The iOptron RC6 comes with a 2\" dual-speed linear-bearing Crayford focuser. Three focuser extension rings are provided for a  flex-free  solid extension as a means to take up any unneeded back focus. Its steel tube is equipped with knife edge baffles to diminish contrast reducing stray light, improving the instrument in both visual and imaging uses. A RC6 model comes with a Vixen style dovetail plates.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan class=\"MsoSubtleEmphasis\"\u003e\u003cspan style=\"font-family: \" lucida sans unicode grande sans-serif font-size: text-align: background-color: rgb\u003efinderscope, diagonal and eyepiece not included\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan class=\"MsoSubtleEmphasis\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eCheck out the Astrobackyard Youtube video review.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan class=\"MsoSubtleEmphasis\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e     \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/UTw-18hTnmk\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44013377355887,"sku":"6111","price":797.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6111-2__35290.jpg?v=1766552281"},{"product_id":"ioptron-8-inch-ritchey-chretien-telescope-rc8","title":"iOptron 8 inch Ritchey-Chretien Telescope (RC8)","description":"\u003cp class=\"MsoNormal\" style=\"margin-bottom:0in;margin-bottom:.0001pt;line-height: normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe iOptron Ritchey-Cretien design telescopes, feature low thermal expansion quartz primary and secondary mirrors with ninety-nine percent reflective dietetic coatings. The RC optical design delivers coma, spherical and chromatic aberration free results, perfect for color or monochrome imaging. A fixed position primary mirror eliminates image shift that occurs from focusing with other telescope designs. The iOptron RC8 comes with a 2\" dual-speed linear-bearing Crayford focuser. Three focuser extension rings are provided for a  flex-free  solid extension as a means to take up any unneeded back focus. Its steel tube is equipped with 10 knife edge baffles to diminish contrast reducing stray light, improving the instrument in both visual and imaging uses. A RC8 model comes with top and bottom dovetail plates adding rigidity to the tube while providing attachment points for the mount and other accessories to be used. \u003cspan style=\"color: rgb(88, 88, 88);\"\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44013377421423,"sku":"6112","price":1684.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6112-2T__66896.jpg?v=1766552288"},{"product_id":"ioptron-10-inch-ritchey-chretien-telescope-rc10","title":"iOptron 10 inch Ritchey-Chretien Telescope (RC10)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan class=\"MsoSubtleEmphasis\"\u003e\u003cspan style=\"font-family: Arial, sans-serif; color: windowtext;\"\u003eThe iOptron Ritchey-Cretien design telescopes, feature low thermal expansion quartz primary and secondary mirrors with ninety-nine percent reflective dietetic coatings. The RC optical design delivers coma, spherical and chromatic aberration free results, perfect for color or monochrome imaging. A fixed position primary mirror eliminates image shift that occurs from focusing with other telescope designs. The iOptron RC10 comes with a 2\" dual-speed linear-bearing Crayford focuser. Three focuser extension rings are provided for a  flex-free  solid extension as a means to take up any unneeded back focus. Its steel tube is equipped with 10 knife edge baffles to diminish contrast reducing stray light, improving the instrument in both visual and imaging uses. A RC10 model comes with top and bottom dovetail plates adding rigidity to the tube while providing attachment points for the mount and other accessories to be used. \u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44013377519727,"sku":"6113","price":4129.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6113-2T__65165.jpg?v=1766552294"},{"product_id":"photron-10-inch-truss-tube-rc-telescope-rc10-truss","title":"Photron™ 10 inch Truss Tube RC Telescope (RC10-Truss)","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe Photon™ line of Ritchey-Cretien astrograph telescope has been expanded with the addition of four new truss tube models (10,12,14 and 16 inch). Designed for today's astro imager, Photron™ truss tube RC telescopes deliver a sharp clear image from one edge to the other. The truss tube models are designed t carry on our long standing reputation for creating and manufacturing solid, stable, accurate tracking mounts, in a high quality RC astrograph telescope.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eiOptron® Photron™ truss tube RC telescopes feature low thermal expansion quartz primary and secondary mirrors with highly reflective dietetic coatings maximizing the light getting to your eyepiece or imagine device. The RC optical design delivers coma, spherical and chromatic aberration free results, perfect for color and monochrome imaging. A fixed position primary mirror eliminates image shift that occurs when focusing from other telescope designs. With 1\/12th wave or better primary mirror our RC scopes delver images and views that are out of this world.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eEach Photron truss tube instrument comes equipped with a dual-speed linear bearing Crayford focuser that can facilitate our optional ASCOM compliant electronic focus control. Three focuser extension rings are provided for a “flex-free” solid extension as a means to take up any unneeded back focus. Its backbone, made up of strong, light, carbon fiber truss supports hold the optics firmly in place while keeping weight to a minimum. It's open air design results in rapid cooling, reducing the \"wait time\" before use. Photron™ by iOptron®, RC truss tube telescopes are sure to meet or exceed even the most discriminating imager or observers expectations.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003ctable width=\"100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\" class=\"colors_descriptionbox\" style=\"font-size: 12px; list-style: inside; background: none rgb(255, 255, 255); border: none; border-radius: 0px; padding: 10px; font-family: \" lucida sans unicode grande sans-serif\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd width=\"1\" background=\"https:\/\/www.ioptron.com\/v\/vspfiles\/templates\/192\/images\/DBox_Border_Left.gif\" valign=\"middle\" style=\"font-size: 13px; list-style: inside;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/clear1x1_1ee3f011-8490-4824-af41-0bec540825c9.gif?v=1766554212\" width=\"1\" height=\"1\" alt=\"\" style=\"border: none !important;\"\u003e\u003c\/td\u003e\n\u003ctd width=\"100%\" valign=\"top\" style=\"font-size: 13px; list-style: inside;\"\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"font-size: 13px; list-style: inside; color: rgb(0, 0, 0);\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"color: rgb(88, 88, 88); list-style: inside;\"\u003e\n\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eFeatures\u003c\/span\u003e\u003cbr\u003e\u003c\/span\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eComa free, chromatic aberration-free, spherical aberration-free optics\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e10\" (254mm) optical aperture\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e2032mm focal length\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003ef\/8 focal ratio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eFixed primary\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eLow thermal expansion quartz mirrors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e3\" Dual-speed Crayford focuser\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eOptional iOptron Electronic Focuser (\u003ca href=\"http:\/\/www.ioptron.com\/product-p\/8451.htm\" style=\"text-decoration-line: none; outline-style: none;\"\u003e#8451\u003c\/a\u003e)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003ePackage includes\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003e#6114\u003c\/span\u003e 10\" Truss Tube RC OTA only\u003c\/span\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eOTA w\/3\" dual-speed Crayford focuser\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e2X 1\" (25.4mm), 1X 2\" (50.8mm) focus extension rings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eCooling fan battery holder\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003ePrimary and secondary mirror covers\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":44013470417007,"sku":"6114","price":4573.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6114-2T__99568.jpg?v=1766554214"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/collections\/richey_20chretien__81421.jpg?v=1767587882","url":"https:\/\/ontariotelescope.com\/collections\/ritchey-chretien.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}