{"title":"Astrographs","description":"\u003cp\u003eBuilt for the camera rather than the eyepiece — fast focal ratios and a flat field across a large sensor. Part of \u003ca href=\"\/collections\/telescopes\"\u003eTelescopes\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"cgx-l-celestron-11-rasa-astrograph-package-v2","title":"CGX-L Celestron 11\" RASA Astrograph package V2","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eGENERAL FEATURES\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003e11\" RASA optical tube assembly\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eCGX-L computerized equatorial mount\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eASTROGRAPH FEATURES\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoListParagraphCxSpFirst\" style=\"text-indent:-.25in;mso-list:l0 level1 lfo1\"\u003e\u003c!--[if !supportLists]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:107%;font-family: Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family:Symbol\"\u003e·\u003cspan style=\"font-variant-numeric: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: \" times new roman\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size: 11.0pt;line-height:107%;font-family:\" arial\u003eUltra-fast, 11-inch f\/2.2 optical design with rare-earth glass for images free of false color, coma, and field curvature.  Cuts imaging time by more than half \u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoListParagraphCxSpMiddle\" style=\"text-indent:-.25in;mso-list:l0 level1 lfo1\"\u003e\u003c!--[if !supportLists]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:107%;font-family: Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family:Symbol\"\u003e·\u003cspan style=\"font-variant-numeric: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: \" times new roman\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size: 11.0pt;line-height:107%;font-family:\" arial\u003eExpansive 43.3 optimized image circle maintains pinpoint stars to the far corners of even the largest astroimaging sensors, while the usable field extends even further to 52 mm for larger format sensors.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoListParagraphCxSpMiddle\" style=\"text-indent:-.25in;mso-list:l0 level1 lfo1\"\u003e\u003c!--[if !supportLists]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:107%;font-family: Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family:Symbol\"\u003e·\u003cspan style=\"font-variant-numeric: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: \" times new roman\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size: 11.0pt;line-height:107%;font-family:\" arial\u003eCustom engineered linear brass focuser bearing reduces image shift, while dual-speed 10:1 FeatherTouch Micro Focus Knob provides the most precise focusing\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoListParagraphCxSpMiddle\" style=\"text-indent:-.25in;mso-list:l0 level1 lfo1\"\u003e\u003c!--[if !supportLists]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:107%;font-family: Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family:Symbol\"\u003e·\u003cspan style=\"font-variant-numeric: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: \" times new roman\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size: 11.0pt;line-height:107%;font-family:\" arial\u003eQuiet, high-output 12V MagLev fan reduces cooldown time and blocks dust\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoListParagraphCxSpLast\" style=\"text-indent:-.25in;mso-list:l0 level1 lfo1\"\u003e\u003c!--[if !supportLists]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:107%;font-family: Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family:Symbol\"\u003e·\u003cspan style=\"font-variant-numeric: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: \" times new roman\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size: 11.0pt;line-height:107%;font-family:\" arial\u003eCommon camera adapters (T-thread and M48) included for easy attachment to popular CCD and DSLR cameras\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eCOMPUTERIZED MOUNT FEATURES:\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eNEW CGX-L FEATURES\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eIncreased 75 lb load capacity.  Exceptional load capacity to weight ratio\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eAdditional Aux accessory ports and autoguider port on the Dec axis for better cable management\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eLarger 144 mm diameter worm wheels to better and more accurately drive heavier loads\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eLonger 270 mm dovetail saddle to better support larger optical tubes\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eMassive 70 mm stainless steel tripod legs with a wider stance for improved stability under heavy loads\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eNew accessory tray holds three 1.25  and two 2  eyepieces with an upright stand for your smartphone or tablet\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eHeavy duty, 31.5 mm stainless steel counterweight shaft to support additional counterweights\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eOptional add-on \u003ca href=\"http:\/\/www.celestron.com\/browse-shop\/astronomy\/accessories\/other-accessories\/polar-axis-finderscope-for-cgx-and-cgx-l\" title=\"Polar Axis Finderscope for CGX\"\u003e\u003cspan style=\"color:#FD8204\"\u003epolar axis finderscope\u003c\/span\u003e\u003c\/a\u003e custom designed for CGX and CGX-L\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eSupports WiFi and wireless operation accessories such as \u003ca href=\"http:\/\/www.celestron.com\/browse-shop\/astronomy\/accessories\/navigation\/starsense-autoalign\" title=\"StarSense AutoAlign\"\u003e\u003cspan style=\"color:#FD8204\"\u003eStarSense AutoAlign\u003c\/span\u003e\u003c\/a\u003e and \u003ca href=\"http:\/\/www.celestron.com\/browse-shop\/astronomy\/accessories\/navigation\/skyportal-wifi-module\" title=\"SkyPortal WiFi Module\"\u003e\u003cspan style=\"color:#FD8204\"\u003eSkyPortal WiFi Module\u003c\/span\u003e\u003c\/a\u003e (sold separately)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eMOUNT FEATURES:\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eCompact, lower profile equatorial head provides improved stability and portability. Sturdier and more rigid with quicker dampening time\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eImproved motors provide more torque, better slewing and tracking under heavy loads\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eHeavy duty belt-drive system minimizes backlash while providing smooth motor operation at full capacity\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eClear windows built into motor covers so pulleys and belts can be monitored\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eSpring-loaded brass worm wheel and stainless steel worm gear reduce friction and provide optimum gear mesh\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eInternal cabling for worry-free remote operation. Power input and lower accessory ports remain stationary while the mount slews to avoid snags\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eInternal hard stops for both axes prevent cable tension and tripod strike\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eInternal optical sensors on both axes for simple and safe remote operation\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003e-Home sensors allow the mount to always start in the index position regardless of orientation before a power reset\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003e-Limit sensors automatically shut off slewing or tracking before reaching the hard stop fail safe\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eIncludes Celestron's new PWI telescope control software, co-developed by \u003ca href=\"http:\/\/www.celestron.com\/support\/planewave-instrument-software\" title=\"Planewave Instrument\"\u003e\u003cspan style=\"color:#FD8204\"\u003ePlaneWave Instruments\u003c\/span\u003e\u003c\/a\u003e.  Software features multi-point mount modeling for extremely precise pointing accuracy\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eSoftware Polar Align:  All-Star Polar Alignment  allows quick and very precise polar alignment. Align on any bright named star without extra polar alignment accessories, apps, or other assistance\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eAdjustable EQ head position to optimize center of gravity over the tripod and fully utilize the increased 3º-65º latitude range\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eDual-fit Vixen\/CG-5 and Losmandy\/CGE dovetail saddle\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003e+20º of additional tracking past the meridian on either side\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eRedesigned tripod has a widened stance for added stability. The minimum tripod height has also been lowered per user feedback\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eTripod legs can be collapsed with accessory tray installed for faster setup and transport\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eIMPROVED ERGONOMICS:\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eIntegrated handles for easy transport and portability\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eAll-new ergonomically designed dovetail clamping knobs\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eInnovative and improved polar alignment adjustment system\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eAll-new ergonomic adjustment knobs with reduced friction for smooth and easy positioning under full loads. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. Redesigned azimuth adjustment with low-friction Teflon bearings to make adjustments easy under full load.  No more binding, rough adjustments!\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eEasy to read latitude scale\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eELECTRONICS:\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eNexStar+ hand control with USB port\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eUSB 2.0 port used to connect directly to PC with PWI Software\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003e2 available autoguider ports for optimum cable management\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003ePEC sensor and PPEC ready\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eThreaded 12VDC power input barrel connector\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eInternal Real Time Clock (keeps time and site information saved)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eOn\/Off rocker switch with red LED\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:24.0pt;mso-bidi-font-size:22.5pt; line-height:107%;font-family:\" arial\u003eDESCRIPTION\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eCapturing impressive deep-sky astroimages is easier than ever with Celestron s new Rowe-Ackermann Schmidt Astrograph, the perfect companion to today s top DSLR or astronomical CCD cameras. This fast, wide-field f\/2.2 system offers two huge advantages over traditional f\/10 astroimaging: better apparent tracking and shorter exposures. That means you ll create better-looking astroimages in a fraction of the time, even without the use of an autoguider.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eThe Rowe-Ackermann Schmidt Astrograph builds on the legacy of Celestron s Schmidt Camera, which allowed astrophotographers to produce images on film in the 1970s.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eToday, with CCD sensor sizes as large as film or larger the Schmidt Astrograph offers a 43.3mm optimized image circle to capture pinpoint stars on the largest imaging chips. (Note: We previously published 70mm which is actually the aperture of the last lens in the telescope. The optical design has not changed). Combine this large image circle with a focal length of just 620 mm and you have an instrument suitable for wide-field imaging, creating huge mosaics of the night sky, surveying, and even comet hunting.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eOPTICAL PERFORMANCE\u003cbr\u003e The Rowe-Ackermann Schmidt Astrograph features newly designed optics with 4-element rare-earth glass for images free of false color and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle is unprecedented for an astrograph in this price range or even that of a much more expensive instrument. The design also provides minimal vignetting. \u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eADVANCED FEATURES\u003cbr\u003e Advanced features like a custom engineered linear brass focuser bearing and FeatherTouch Micro Focus Knob allow you to make the fine adjustments you need to capture the perfect shot. Meanwhile, a12V MagLev fan reduces cooldown time and provides optimal airflow through the dust filtered optical tube.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eEngineered as a complete astroimaging system, every component of the Rowe-Ackermann Schmidt Astrograph is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully-multicoated optical window or an optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eCGX-L MOUNT:\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eCelestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series.  Capable of carrying  Celestron s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes, imaging kits, and the latest in wireless tech accessories.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eKey design goals included larger 144 mm diameter worm wheels which provide smoother operation and can more accurately drive heavier loads, longer 270 mm dovetail saddle to support larger optical tubes, remote operation friendly features such as home and limit optical sensors, easier polar alignment adjustments, and better cable management overall. In addition to that, we ve made mechanical and ergonomic improvements throughout to make the mount sturdier, easier to use, and easier to transport.  COMPACT.  ERGONOMIC.  INNOVATIVE.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e                                                                                                                              \u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013376340079,"sku":"12074","price":10423.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/12078_CGX-L_RASA_11_Kit_01__05704.jpg?v=1766552157"},{"product_id":"8-rowe-ackermann-schmidt-astrograph-rasa8","title":"ROWE-ACKERMANN SCHMIDT ASTROGRAPH (RASA8)","description":"\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCapture spectacular wide-field deep sky images in seconds with Celestron’s new portable astrograph, the 8” Rowe-Ackermann Schmidt Astrograph (RASA). This incredibly fast f\/2.0 system is the perfect companion to today’s color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, it’s easy to transport your 8” RASA to the most remote dark sky locations.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eRASA Performance Made for Everyone\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe 8” RASA is an imaging telescope that delivers a flat field without optical aberrations for razor sharp stars across a wide field of view. It can capture stunning deep-sky astronomical images without the challenges typically presented by longer focal length instruments at a fraction of the cost of those systems.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe latest addition to the RASA family, this 8” version is a much more portable and affordable version of the heralded RASA 11, which was introduced to much acclaim in 2014. With the 8” RASA joining the lineup, a wider range of astroimagers can enjoy the benefits of the RASA design. It has many of the same thoughtfully designed features as its “big brother” RASA 11, including the integrated air-cooling system, internal filter mount, and sturdy CGE dovetail mounting bar.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003ePurely designed for imaging, the 8” RASA cannot be used visually. The prime focus focal plane is located at the front of the optical system, so it cannot accommodate a traditional eyepiece.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e \u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eShorter Exposure Times and Virtual “Real-Time” Observing\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eSince it is an F\/2.0 optical system, imagers can use shorter exposure times to capture detail in faint objects. When combined with sensitive cameras and the proper “live stacking” software, the 8” RASA can provide an almost real-time observing experience. View images on a computer instantly that are brighter and more detailed than can be seen in much bigger telescopes with the naked eye.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eBecause shorter exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The 8” RASA’s relatively short 400mm focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required. Weighing only 17 lb, this optical tube pairs perfectly with a wide variety of mounts.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e \u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eUltra-Stable Focus System\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eWith the launch of the 8” RASA, Celestron is unveiling a new focuser design that mitigates lateral movement of the primary mirror when focusing, slewing, or tracking with the astrograph. Focusing is easier, more accurate, and more stable than ever. The key to the Ultra-Stable Focus System is two sets of precision bearings that are precisely aligned and tested during assembly to ensure optimal results.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eBuilt for Today’s Latest Cameras\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\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. It is optimized for sensors with up to a 22mm diagonal, but still performs well with larger (up to 32mm diagonal) sensors. As such, it works well with APS-C sized sensors used in many mirrorless cameras.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; padding: 0px; font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCamera adapters to connect C-mount cameras and cameras which mount with M42 threads are included. Celestron offers optional adapters to connect your 8” RASA to Sony or Canon mirrorless cameras.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013458161775,"sku":"91073","price":3056.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/91073_8in_Rowe-Ackermann_Schmidt_Astrograph_01_570x3802x__61972.jpg?v=1766553593"},{"product_id":"cgx-8-rowe-ackermann-schmidt-astrograph","title":"CGX 8\" Rowe-Ackermann Schmidt Astrograph","description":"\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThis kit combines the 8” Rowe-Ackermann Schmidt Astrograph (RASA) with the state-of-the-art CGX German equatorial mount. Simply add a camera and this package offers everything you need to take spectacular images of wide-field deep sky objects. Although about the same size as the CGEM II, the CGX is a big step up in performance and features, especially for imaging applications.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eRASA Performance Made for Everyone\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCapture spectacular wide-field deep sky images in seconds with Celestron’s new portable astrograph, the 8” Rowe-Ackermann Schmidt Astrograph (RASA). This incredibly fast f\/2.0 system is the perfect companion to today’s color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, it’s easy to transport your 8” RASA to the most remote dark sky locations.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe 8” RASA is an imaging telescope that delivers a flat field without optical aberrations for razor sharp stars across a wide field of view. It can capture stunning deep-sky astronomical images without the challenges typically presented by longer focal length instruments at a fraction of the cost of those systems.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe latest addition to the RASA family, this 8” version is a much more portable and affordable version of the heralded RASA 11, which was introduced to much acclaim in 2014. With the 8” RASA joining the lineup, a wider range of astroimagers can enjoy the benefits of the RASA design. It has many of the same thoughtfully designed features as its “big brother” RASA 11, including the integrated air-cooling system, internal filter mount, and sturdy CGE dovetail mounting bar.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003ePurely designed for imaging, the 8” RASA cannot be used visually. The prime focus focal plane is located at the front of the optical system, so it cannot accommodate a traditional eyepiece.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eShorter Exposure Times and Virtual “Real-Time” Observing\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eSince it is an F\/2.0 optical system, imagers can use shorter exposure times to capture detail in faint objects. When combined with sensitive cameras and the proper “live stacking” software, the 8” RASA can provide an almost real-time observing experience. View images on a computer instantly that are brighter and more detailed than can be seen in much bigger telescopes with the naked eye.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e \u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eUltra-Stable Focus System\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eWith the launch of the 8” RASA, Celestron is unveiling a new focuser design that mitigates lateral movement of the primary mirror when focusing, slewing, or tracking with the astrograph. Focusing is easier, more accurate, and more stable than ever. The key to the Ultra-Stable Focus System is two sets of precision bearings that are precisely aligned and tested during assembly to ensure optimal results.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eBuilt for Today’s Latest Cameras\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\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. It is optimized for sensors with up to a 22mm diagonal, but performs well with sensors up to 32mm diagonal. The APS-C sized sensors used in many mirrorless cameras are a good choice. 42mm full frame sensors will also work, but performance will be poor at the edges of the sensor and field illumination will be reduced. Additionally, we do not recommend pairing RASA 8 with any camera body more than 4” in diameter. See the chart below to determine if your camera is compatible with RASA 8.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eUnique Optical Design\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eRASA’s optical design is patented (US 2016\/0299331 A1). The design consists of a Schmidt corrector, primary mirror, lens group, and optical window. The lens group contains 4 elements and utilizes rare-earth elements. Unlike many telescopes that only perform well over the visible spectrum (400-700nm), the 8” RASA’s optics are designed to perform over a wider spectral range, from 390-800nm. This allows more of the light emitted from the astronomical object to be sharply focused in the image.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eWith many imaging systems, adding an extra piece of flat glass such as a filter does not change optical performance. However, that is not the case with super-fast optical systems like the RASA. Our engineers addressed this by designing the RASA with a removeable optical window, so you can maintain peak optical performance if a filter is added or if a camera has its own optical window. Celestron offers a Light Pollution Imaging Filter designed specifically for the 8” RASA, which mounts in place of the optical window.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eAll refractive optical surfaces are coated with StarBright XLT coatings, while the primary mirror uses enhanced aluminum coatings. This maintains high light transmission through the entire optical system.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eWhen compared with “Hyperstar SCT” systems, the RASA 8 provides better optical performance and field illumination.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eCGX: The Ideal Platform for RASA\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe CGX is the culmination of Celestron engineers’ decades of experience in equatorial mount design, incorporating feedback from imagers worldwide. Combined with the RASA 8, it is a state-of-the-art deep-sky astronomical imaging system.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe CGX is an incredibly sturdy equatorial mount which rigidly supports the RASA 8. The mount was designed more compactly, so the instrument load is held closer to the R.A. axis, thus reducing torque from the load. It was also designed using FEA (Finite Element Analysis) software, which helped to optimize the stout structure of the mount. As a result, the CGX can support more weight than other mounts with similar mass. With its 55 lb. load capacity, it can easily handle the RASA 8, which weighs only 17 lbs., along with a camera and any accessories. Expect a vibration-free setup, even in somewhat windy conditions. The RASA 8 connects directly to the CGX with its CGE dovetail mounting bar.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe heavy-duty adjustable height tripod has 2” diameter steel tripod legs with an extra-wide stance for improved stability. Graduated markings on the tripod legs make it easy to extend them to the same height and level the tripod.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe mount is packed with functionality and conveniences that make imaging with the 8” RASA easy. The fully computerized mount will automatically “GoTo” any of the 40,000+ astronomical objects selected from the NexStar+ hand controller’s database and automatically track the object as it appears to move across the night sky.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eDesigned with imaging in mind, the CGX motor drive system builds upon learnings from previous generations of mounts. You can trust CGX to accurately track during an exposure. At the heart of the system are low cog DC servo motors with integrated optical encoders. The low cog design helps the motors run smoothly, while the integrated optical encoders provide accuracy. The motors connect to the worm gears with a belt-and-pulley system (instead of spur gears) to reduce gear backlash when the motor changes directions. The steel worm gears are supported by precision bearings and spring-loaded against a brass worm wheel, which also helps ensure a smoothly operating drive system with minimal backlash and no binding.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eTo track objects in the night sky, the mount must first be polar-aligned. Celestron makes this process easier than ever with the innovative All-Star Polar Alignment procedure. No extra equipment, such as a polar finder scope, is required. (An optional polar alignment finder scope is available if desired.) Best of all, the alignment can usually be completed in about 15 minutes, even without a clear view of Polaris.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eAll mounts have some amount of “periodic tracking error” inherent in them caused by tiny gear imperfections. To mitigate this, the CGX has Permanent Periodic Error Correction (PPEC). This allows you to run a routine to record the periodic errors only once; the recording is kept in memory, and subsequently corrects for the mount’s periodic tracking error. If an even higher level of tracking accuracy is desired, the CGX also has a dedicated autoguider port to connect an autoguiding camera directly to the mount to correct for any residual tracking errors.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eConditions for imaging are best when celestial objects are at their highest point in the sky with the darkest background, called the meridian. But some German equatorial mounts have trouble tracking near the meridian because they need to perform a “meridian flip,” readjusting their position to avoid the tube striking the mount. CGX does not suffer from this problem, imaging through the meridian with ease and not requiring a meridian flip until the object is a full 20° past the meridian.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe NexStar+ also has dozens of other functions to control every aspect of the mount’s behavior. These include:\u003c\/p\u003e\u003cul style=\"box-sizing: inherit; margin: 15px 0px; padding: 0px; list-style: none; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eMultiple ways to align the mount to the night sky\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eAdjustable slew rates up to 5°\/second\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eNorthern or Southern hemisphere compatibility\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eAdjustable autoguiding rates\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eHibernate mode so the mount can be powered down without loss of alignment\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eContinual firmware development, with new features added regularly\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eIn addition to the autoguider port, the CGX also has other ports to enhance and expand the capabilities of the mount. The hand controller has a USB 2.0 port for those who wish to control the mount with an external computer and optional third-party software (see “Ready for Remote Imaging” section below). There are also 2 AUX ports on the mount that can support optional accessories such as StarSense AutoAlign.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eTransporting the entire system to a dark site is extremely manageable, even for one person. The optical tube, mount head, tripod, counterweight bar, and counterweight all disassemble into separate pieces. The only tool ever required is a supplied hex key, which has a holder built into the mount, so you can’t lose or forget it. CGX also features two ergonomic carry handles that make carrying and setting up this heavy-duty mount much more comfortable. When it’s time to transport your mount, the tripod accessory tray “nests” into the legs when collapsed, stabilizing the tripod in your vehicle and ensuring that you don’t lose the tray.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eReady for Remote Imaging\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eToday’s imagers do not necessarily want to be near their telescope outside when they are capturing images. Rather, they would prefer to be indoors controlling the mount and camera with a computer, while the telescope is in the backyard, or even hundreds of miles away in a dark remote observing site. Not every mount is capable of remote observing operation, but the CGX was designed specifically with this in mind. Celestron’s engineers thought through every scenario that might occur in the field, since it’s very likely that no one will be around to immediately “rescue” a remote telescope if something unexpected occurs.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eOne of the most critical problems that can occur during remote operation is the optical tube inadvertently striking the mount. This will not only ruin an exposure and require realignment with the sky, but could also damage expensive equipment. This type of strike cannot happen with CGX because optical switches on each axis stop the motors before the astrograph can run into the mount, without loss of alignment.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eShould power be somehow interrupted, the mount has “home position” optical switches that allow easy remote realignment of the mount. The mount’s cables are all wired internally through the mount, and all external inputs, including the power jack, are on a stationary section of the mount. This prevents cables from becoming snagged or tangled and unplugged as the astrograph is moving. The mount also has hard stops to physically limit the motion of the astrograph on each axis, preventing the internal cabling from being overly twisted or pulled and potentially failing. In addition, the hard stops provide a “fail safe” safety measure to protect the astrograph should the limit switches somehow fail. The power jack for the mount utilizes a threaded barrel connector, ensuring the power cable won’t become unplugged and cause the mount to lose power.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eFor remote imaging, the mount needs a way to be controlled by an external computer. The CGX has two ways to connect to a computer via USB 2.0. First, it has a USB port on the mount itself which is used exclusively to connect to a PC running the included Celestron PWI telescope control software. Developed in partnership with PlaneWave Instruments, the software has an intuitive graphical user interface and provides an excellent solution for remotely operating the mount. It incorporates multi-point mount modeling to provide the most accurate alignment of the mount to the sky possible. In addition, the included NexStar+ hand controller also has its own USB 2.0 port for computer connection; this can be used with optional third-party telescope control software by use of an ASCOM driver.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eIn summary, the CGX and RASA 8 together are a top-tier imaging system built for performance and ease of use. This kit is perfect for imaging in the backyard or at a remote dark sky site, whether you are near the telescope or on the other side of the globe.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013521928303,"sku":"12058","price":5975.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/12058_CGX_800_Rowe-Ackermann_Schmidt_Astrograph_01_570x3802x__27874.jpg?v=1766554576"},{"product_id":"celestron-11-rowe-ackermann-schmidt-astrograph-rasa-v2","title":"Celestron 11\" Rowe-Ackermann Schmidt Astrograph RASA V2","description":"\u003cul style=\"box-sizing: inherit; margin: 0px 0px 15px 7px; padding: 0px; list-style: none; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eFast, wide-field 11” f\/2.2 optical design with rare-earth glass for images free of false color, coma, and field curvature\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eLarge 43.3mm optimized image circle maintains pinpoint stars to the far corners of even the largest astroimaging sensors, while the usable field extends even further to 52mm for larger format sensors\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003e\n\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eNew Ultra-Stable Focus System (USFS) \u003c\/span\u003eminimizes focus shift and mirror flop\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eIntegrated air-cooling system features a quiet, high-output 12V MagLev fan and vents with mesh filters to prevent dust ingress\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eCommon camera adapters (T-thread and M48) included for easy attachment to popular CCD and DSLR cameras\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCapturing impressive deep-sky astroimages is easier than ever with Celestron’s Rowe-Ackermann Schmidt Astrograph (RASA) V2, the perfect companion to today’s top DSLR or astronomical CCD cameras. This fast, wide-field f\/2.2 system allows for shorter exposure times compared to traditional f\/10 astroimaging, without sacrificing resolution. Because shorter sub-exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The short focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eRASA 11 V2 builds on the legacy of Celestron’s Schmidt Cameras, which allowed astrophotographers to produce images with much shorter exposure times on film in the 1970s.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eToday, with CCD sensor sizes as large as film or larger, the RASA 11 V2 offers a 43.3mm optimized image circle to capture pinpoint stars on the largest imaging chips. Optical performance for huge sensors with diagonals of up to 52mm wide is still excellent.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCombine this large image circle with a focal length of just 620mm and you have an instrument suitable for wide-field imaging, creating huge mosaics of the night sky, surveying, and even comet hunting.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eOptical Performance\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e\u003cbr style=\"box-sizing: inherit;\"\u003e\u003c\/span\u003eThe RASA 11 V2 features optics with 4-element rare-earth glass for images free of false color and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle are unprecedented for an astrograph in this price range—or even that of a much more expensive instrument. The design also provides minimal vignetting.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eAdvanced Features\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e\u003cbr style=\"box-sizing: inherit;\"\u003e\u003c\/span\u003eRASA 11 V2 utilizes the new Ultra-Stable Focus System (USFS). At the heart of this system is a precision linear ball bearing. The bearing serves to minimize focus shift (unwanted lateral motion of the primary mirror during focusing which causes shifting of the image) and mirror flop (movement of the primary mirror when the telescope is pointing to different positions in the sky). The USFS is also compatible with the optional Celestron Focus Motor (#94155-A). The integrated 12V DC MagLev fan reduces cooldown time and provides optimal airflow through the dust filtered optical tube.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eEngineered as a complete astroimaging system, every component of the RASA 11 V2 is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully-multicoated optical window or optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly. \u003cspan style=\"box-sizing: inherit;\"\u003eThe \u003c\/span\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eDovetail CGE bars on the top of the optical tube provides a connection for use of optional accessories like a guidescope.\u003c\/span\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013543161967,"sku":"91076","price":6253.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/91076_Rowe-Ackermann_Schmidt_Astrograph_v2_01_570x3803x__67223.jpg?v=1766555891"},{"product_id":"advanced-vx-800-rowe-ackermann-schmidt-astrograph-rasa-telescope-avx","title":"ADVANCED VX 800 ROWE-ACKERMANN SCHMIDT ASTROGRAPH (RASA) TELESCOPE AVX","description":"\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThis kit combines the 8” Rowe-Ackermann Schmidt Astrograph (RASA) with the strong-yet-portable Advanced VX\u003cspan style=\"box-sizing: inherit;\"\u003e (AVX)\u003c\/span\u003e German equatorial mount. Simply add a mirrorless camera and this package offers everything you need to take spectacular images of wide-field deep sky objects.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eRASA Performance Made for Everyone\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCapture spectacular wide-field deep sky images in seconds with Celestron’s portable astrograph, the 8” Rowe-Ackermann Schmidt Astrograph (RASA). This incredibly fast f\/2.0 system is the perfect companion to today’s color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, it’s easy to transport your 8” RASA to the most remote dark sky locations.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eRASA Performance Made for Everyone\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe 8” RASA is an imaging telescope that delivers a flat field without optical aberrations for razor sharp stars across a wide field of view. It can capture stunning deep-sky astronomical images without the challenges typically presented by longer focal length instruments at a fraction of the cost of those systems.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe latest addition to the RASA family, this 8” version is a much more portable and affordable version of the heralded RASA 11, which was introduced to much acclaim in 2014. With the 8” RASA joining the lineup, a wider range of astroimagers can enjoy the benefits of the RASA design. It has many of the same thoughtfully designed features as its “big brother” RASA 11, including the integrated air-cooling system, internal filter mount, and sturdy CGE dovetail mounting bar.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003ePurely designed for imaging, the 8” RASA cannot be used visually. The prime focus focal plane is located at the front of the optical system, so it cannot accommodate a traditional eyepiece.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eShorter Exposure Times and Virtual “Real-Time” Observing\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eSince it is an F\/2.0 optical system, imagers can use shorter exposure times to capture detail in faint objects. When combined with sensitive cameras and the proper “live stacking” software, the 8” RASA can provide an almost real-time observing experience. View images on a computer instantly that are brighter and more detailed than can be seen in much bigger telescopes with the naked eye.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eBecause shorter exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The 8” RASA’s relatively short 400mm focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required. Weighing only 17 lb, this optical tube pairs perfectly with a wide variety of mounts.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eUltra-Stable Focus System\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eWith the launch of the 8” RASA, Celestron unveiled a new focuser design that mitigates lateral movement of the primary mirror when focusing, slewing, or tracking with the astrograph. Focusing is easier, more accurate, and more stable than ever. The key to the Ultra-Stable Focus System is a precision linear ball bearing, which is tested during assembly to ensure optimal results.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eBuilt for Today’s Latest Cameras\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\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. It is optimized for sensors with up to a 22mm diagonal, but performs well with sensors up to 32mm diagonal. The APS-C sized sensors used in many mirrorless cameras are a good choice. 42mm full frame sensors will also work, but performance will be poor at the edges of the sensor and field illumination will be reduced. Additionally, we do not recommend pairing RASA 8 with any camera body more than 4” in diameter. See the chart below to determine if your camera is compatible with RASA 8.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013569769583,"sku":"12032","price":4029.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/12035_AVX_800_Rowe-Ackermann_Schmidt_Astrograph_01_570x3802x__20426.jpg?v=1766556574"},{"product_id":"askar-fma135","title":"Askar FMA135 30mm f\/4.5 Mini APO Astrograph","description":"\u003cspan style=\"text-align: justify; background-color: rgb(255, 255, 255); font-family: Arial;\"\u003e\u003cspan style=\"font-size: 12pt;\"\u003eThe very new beginning of year 2021 witnessed the advent of the Askar FMA135 astrograph which has inherited the consistent quality, compactness and versatility, from the FMA family while possessing incomparable \u003c\/span\u003especialty\u003cspan style=\"font-size: 12pt;\"\u003e.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-family: ????; font-size: 14px; text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr style=\"text-align: justify; background-color: rgb(255, 255, 255); font-size: 12pt;\"\u003e\u003cspan style=\"text-align: justify; background-color: rgb(255, 255, 255);\"\u003eAs its name indicates, FMA135 was born with a primary objective plus a flattener. The primary objective features an APO triplet structure with a diameter of 35mm and a focal length of 135mm, one of which is an ED glass.\u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"text-align: justify; background-color: rgb(255, 255, 255); font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0); font-family: ????;\"\u003eThe flattener contains three elements which is designed to support APS (advanced photo system) sky imaging and to control the performance at the edge of the photo. The exquisite optical design is the major contribution for its matchless ability in both visual observation and astrophotography as well as chromatic aberration control.\u003c\/span\u003e\u003cbr\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0); font-family: ????;\"\u003eFurther, the Askar FMA135 can also work as an excellent finder or guider. Its lightness and grace make it possible to attach the FMA135 to various cameras with corresponding adapters. Once attached, the FMA135 turns to be a 135mm manual lens, which will absolutely bring you an magnificent experience in ground object imaging.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThere is 1.25\" female thread at the front of the astrograph suitable for all purchasable 1.25\" filters and standard M42×0.75 male thread at the back which accommodates most stock DSLR or astronomy cameras (an extra adapter is needed). Our standard configuration includes a tube ring for the installation of Vixen finder base, a 1.25\" visual back for the attachment of an eyepiece or a guiding camera as well as a high-quality focuser (with thread) and a setting thread to avoid any deviation in astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eAs an ingenious optical design, our FMA135 will definitely offer you a super imaging experience.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"margin: 0px; padding: 0px; text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e FMA135 can be used in 4 different setups\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"margin: 0px; padding: 0px; text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eThe FMA 135 mm f\/4.5 as a telephoto lens\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe manual APO telephoto lens is corrected up to full-frame. From the T2 thread you have 55 mm working distance. Ideal for system cameras, DSLR and of course astro cameras. The telephoto lens is so compact that it can be used hands-free. The high speed of f\/4.5 allows short exposure times even under difficult lighting conditions.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eThe FMA 135 f\/4.5 as astrograph\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eAstrophotographers will be delighted with this compact telephoto lens. Stars up to the edge are imaged crispy sharp, when using cameras up to APS-C format. With 55 mm working distance (T2 mount), you can connect all common cameras. The multi-function mount allows easy adaptation to the finder shoe of your telescope or to a piggyback camera mount via the 1\/4\" female thread.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eThe FMA 135 as compact APO refractor and mini guide scope\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe objective provides enough working distance for a 1.25\" star diagonal and standard 1.25\" eyepieces. You can make wonderful wide-field observations or simply connect an autoguider and track your telescope cleanly.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eThe FMA 135 as a spotting scope\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe high-contrast optics enable exciting wildlife and landscape observations. In just a few steps, you have turned the telephoto lens into a compact and crisp spotting scope. You can use all common photo tripods, the adapter is already included.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013648248943,"sku":"FMA135","price":477.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FMA135__27117.jpg?v=1766558604"},{"product_id":"cgx-1100-rowe-ackermann-schmidt-astrograph-rasa-equatorial-telescope","title":"CGX 1100 ROWE-ACKERMANN SCHMIDT ASTROGRAPH (RASA) EQUATORIAL TELESCOPE","description":"\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe CGX 1100 Rowe-Ackermann Schmidt Astrograph Equatorial Telescope (CGX 11” RASA) sets a new standard in astroimaging systems at an extremely affordable price. The CGX 11” RASA telescope is an excellent advanced-level imaging setup. The Rowe-Ackermann Schmidt Astrograph (RASA) produces images in a fraction of the time compared to other optical tubes. The CGX mount provides superior performance for larger telescopes while taking advantage of Celestron’s most advanced technologies: All-Star Polar Alignment, Celestron PWI telescope control software, Starry Night Special Edition software, SkyAlign, and permanently programmable periodic error correction (PPEC).\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eIf you’re an experienced imager, you’ll love taking this portable mount to a dark sky site and enjoying all the conveniences of a larger observatory mount.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eRowe-Ackermann Schmidt Astrograph Features\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCapturing impressive deep-sky astroimages is easier than ever with Celestron’s Rowe-Ackermann Schmidt Astrograph (RASA) V2, the perfect companion to today’s top DSLR or astronomical CCD cameras. This fast, wide-field f\/2.2 system allows for shorter exposure times compared to traditional f\/10 astroimaging, without sacrificing resolution. Because shorter sub-exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The short focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eRASA 11 V2 builds on the legacy of Celestron’s Schmidt Cameras, which allowed astrophotographers to produce images with much shorter exposure times on film in the 1970s.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eToday, with CCD sensor sizes as large as film or larger, the RASA 11 V2 offers a 43.3mm optimized image circle to capture pinpoint stars on the largest imaging chips. Optical performance for huge sensors with diagonals of up to 52mm wide is still excellent.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCombine this large image circle with a focal length of just 620mm and you have an instrument suitable for wide-field imaging, creating huge mosaics of the night sky, surveying, and even comet hunting.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eOptical Performance\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e\u003cbr style=\"box-sizing: inherit;\"\u003e\u003c\/span\u003eThe RASA 11 V2 features optics with 4-element rare-earth glass for images free of false color and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle are unprecedented for an astrograph in this price range—or even that of a much more expensive instrument. The design also provides minimal vignetting.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eAdvanced Features\u003c\/span\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003e\u003cbr style=\"box-sizing: inherit;\"\u003e\u003c\/span\u003eRASA 11 V2 utilizes the new Ultra-Stable Focus System (USFS). At the heart of this system is a precision linear ball bearing. The bearing serves to minimize focus shift (unwanted lateral motion of the primary mirror during focusing which causes shifting of the image) and mirror flop (movement of the primary mirror when the telescope is pointing to different positions in the sky). The USFS is also compatible with the optional Celestron Focus Motor (#94155-A). The integrated 12V DC MagLev fan reduces cooldown time and provides optimal airflow through the dust filtered optical tube.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eEngineered as a complete astroimaging system, every component of the RASA 11 V2 is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully-multicoated optical window or optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly. The Dovetail CGE bars on the top of the optical tube provides a connection for use of optional accessories like a guidescope.\u003c\/p\u003e\u003ch4 style=\"box-sizing: inherit; margin: 15px 0px 0.5em; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003c\/h4\u003e\u003ch4 style=\"box-sizing: inherit; margin: 15px 0px 0.5em; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCGX Mount\u003c\/h4\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCelestron’s engineering team applied their years of experience designing German equatorial mounts to CGX, a culmination of all Celestron’s advancements in technology, value, and ease-of-use. Capable of carrying the RASA 11 with ease, the CGX is perfect for backyard and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support advanced telescopes, imaging kits, and the latest in wireless tech accessories.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eCGX was designed to better support your telescope for both visual and astroimaging pursuits. Key design goals included:\u003c\/p\u003e\u003cul style=\"box-sizing: inherit; margin: 0px 0px 15px 7px; padding: 0px; list-style: none; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003ea lower profile EQ head, which provides a more compact and more stable setup\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003ea better drive system\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eremote operation-friendly features with home and limit optical sensors\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eeasier polar alignment adjustments\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; position: relative; margin-bottom: 5px; padding-left: 15px;\"\u003eimproved cable management.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eIn addition to achieving all these goals, we’ve made mechanical and ergonomic improvements throughout CGX to make the mount sturdier, easier to use, and transport.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013683802223,"sku":"12060","price":8338.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/12060_CGX_1100_RASA_01_570x3803x__59860.jpg?v=1766559688"},{"product_id":"askar-fma230-f-4-6-triplet-with-reducer","title":"Askar FMA230 50mm f\/4.6 APO Astrograph with Reducer","description":"\u003cspan style=\"font-family: Arial;\"\u003eThe Askar FMA230 has a compound lens system. The front objective lens comprises three lenses and the posterior reducer is composed of four lenses and thus it’s sometimes dubbed as a “three at the front and four at the rear” system. The aperture size of the objective lens is 50mm and the original focal length is 275mm thus we’ve got a relatively fast focal ratio of f\/5.5. The objective lens contains two ED glasses which are adapted to cure chromatic aberrations.\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eOne can barely find an equal counterpart in the market as designing a three-element apochromatic objective lens in astrograph with such size demands more on craftsmanship and processing technique. We made it because we consistently cling to the belief that we have to deliver a better imaging result to our customers. The FMA230 can solely function as a lens to observe the ground scenery or stars in the sky, or as a telescope for direct-focus photography. You should just fine-tune the helical focuser to perfectly focus without adding extra optical devices.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe four-element reducer is a 0.84×optical device which can change the the FMA230 into a 50mm-aperture astrograph with a focal length of 230mm and a focal ratio of f\/4.6. The reducer is designed specially for sophisticated astrophotography, which plays an essential role in improving the image quality generally across the whole field of view. And it pays special attention to the stars at the edge of the image. The pictures will be greatly enhanced and detailed under the help of this dedicated reducer even the imaging equipment you use is a rather professional full-frame ordinary or astronomy camera.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eAskar FMA230 is equipped with useful standard accessories.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe pair of tube rings are artistically pierced. Its stalks are lengthened which means that the tube rings provide more room for the devices, like a camera, that are attached to the FMA230, so they won’t collide with the dovetail plate under the astrograph. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe FMA230 comes with a Vixen-style dovetail plate. Screw the tube-ring-wrapped astrograph onto the dovetail plate and then directly slide the assembly into the slot on top of an equatorial mount. The slot at the center of the dovetail plate is carved for the attachment to a tripod. It’s quite convenient and helpful especially when you carry out some ground imaging or observation.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eIn order to solve the awkwardness of carrying around your astrograph when you engage in field astrophotography, the FMA230 is designed with a pretty-looking and utility handle. The detachable handle is installed on the top side of the tube ring. The handle is not just literally a handle, the dovetail slot carved out of the handle can also be a base for the attachment of finders, guiders or ASIAIRs that have a corresponding dovetail foot. So you have more room to integrate as many accessories as possible. Besides, the handle is carved with 45°Arca-swiss style slots at the sides, so an upside-down handle can be directly slid into a corresponding Arca-swiss clamp on a camera tripod.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe lightweight and compact FMA230 is a new sibling from the Askar FMA- family, it will definitely bring your observing and imaging experience to a whole new level! \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013687996527,"sku":"FMA230","price":1008.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FMA230_2525202__14049.1682635769.1280.1280.jpg?v=1766559793"},{"product_id":"askar-fra500-astrograph","title":"Askar FRA500 Astrograph","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eAskar FRA500 is typically a wonderful mix of pragmatism and aesthetics. The astrograph shows smooth lines and a sound layout of components. From the front, the Askar FRA500 has an impressive dew shield decorated with a classic bright-red bezel ring. The total length of FRA500 is 452mm when the dew shield is stretched out and 410mm when contracted back. At the tail end of the astrograph locates a 3.5\" massively-built focuser with dual-speed hand knobs (twin knobs for coarse adjustment and one 1:10 fine adjustment knob), which is of great use in real observation or astrophotography.\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;\"\u003eThe astrograph wears smooth coating and is evenly finished. The graduation inside of the focuser is quite clear and easily readable. The focuser is tough and solid, and on the left side of it, there is a standard finder base with a silver thumb screw. So the FRA500 can piggyback carry finders, guiders or other potential astronomy accessories.\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;\"\u003eAskar FRA500 comes also with a pair of sought-after tube rings. On the top of the tube rings attached a handle and at the bottom, there is an Askar Losmandy-style dovetail plate. The combination of milk-white main tube and dew shield together with a high-gloss piano-black focuser makes the optical tube assembly calm and deep which is offset by the bright red decorative ring and tube rings.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe Askar FRA500 is 410mm long and weighs about 4kg , so it’s quite convenient for users to carry around or mount on an EQ mount. It’s particularly suitable for astronomy enthusiasts who frequently engage in long-distance trips or out-door astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eAskar FRA500 together with the FRA- family is well received for large aperture, fast speed, delicate focusing system, unique optical design and the subsequently high-quality imaging results. Wish the Askar FRA500 be a loyal companion alongside your journey of astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013705625711,"sku":"FRA500","price":2899.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1629350823__22501.jpg?v=1766560222"},{"product_id":"askar-107phq-super-apo","title":"Askar 107PHQ Super APO","description":"\u003cdiv align=\"center\" style=\"outline: none; box-sizing: border-box; margin: 0px; padding: 60px 0px 0px; color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei center font-size:=\"\" text-align:=\"\" line-height:=\"\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eAs the first long-focal-ratio Flatfield astrograph from Askar, 107PHQ is born with a special mission: whether you are just getting started in astrophotography, or an enthusiast who has been quite familiar with all equipment and devices, you can always find Askar 107PHQ a useful astrograph which is functionally practical and physically attractive.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eIt's especially amateur or beginner friendly since you don't need to attach an extra field flattener to get a satisfactory picture. And for the fact that you don't need a flattener and you can easily get over back-focus calculation and confusing connection steps, all you need to do is to equip your 107PHQ with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.  Askar 107PHQ, a versatile all-rounder.  Askar 107PHQ can literally be applied in any conceivable situations, and that’s the top reason why 107PHQ is produced: to slash as much trouble for users as possible.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003eThe sleek 107PHQ is assembled with high-quality CNC-machined components and wrapped with smooth coating. The calm and seriousness is offset by the bright green decorative rings or knobs. The 3.4\" rigid focuser is capable of handling a load of 8kg. It’s designed with a long travel distance of 95mm, which is suitable for visual observation. And it's been optimized especially for astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"text-align: center;\"\u003eThe built-in Flatfield lens is a great contribution to Askar 107PHQ’s imaging ability. It supports 44mm full-frame imaging. The stars around the corner of the images seldom suffer from distortion or deformation. At the center of its field of view, the RMS radius is merely 3um. Even a fastidious user can also be satiated when it comes to the shape of stars. Askar 170PHQ can effectively handle with problems of field curvature and vignette.\u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; text-align: center;\"\u003e\u003cspan style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003eThe standard package includes an Askar 107PHQ OTA, a set of four-piece M86-M48 adapters, a pair of tube rings, a 300mm Askar Vixen-style dovetail plate and a high-quality aluminum suitcase.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013742653551,"sku":"107PHQ","price":3334.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1648111037__64264.jpg?v=1766561453"},{"product_id":"askar-80phq-refractive-astrograph","title":"Askar 80PHQ Refractive Astrograph","description":"\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei center font-size:=\"\" text-align:=\"\"\u003eAskar introduces the brand-new 80PHQ refractive astrograph, and it’s the second long-focal-ratio astrograph from the PHQ- family.\u003c\/span\u003e\u003cdiv\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 14px; color: rgb(68, 68, 68);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThe overall finish of 80PHQ is evenly painted. The ivory and flawless coating of the main tube feels comfortably pimply, which can not only increase your grip, preventing the telescope from slipping off from your sweaty hands, but also improve its texture, avoiding the tedious monotony.  \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eA pair of clamshell-style CNC-manufactured black tube rings tightly hold the OTA. So you can just turn two locking screws to loosen or tighten the tube rings simplifying the setup by avoiding the frequent use of small tools like Allen wrenches or socket head screws. \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThe bright green dust cap, handle, locking screws, focusing knob and decorative rings add more energy and vitality to the otherwise deep and profound astrograph. White and green is the classic combination for PHQ series. \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThere is a 3\" rack-and-pinion rigorous focuser on the rear end of the telescope. It’s a smooth focusing unit with dual-speed adjustment. 80PHQ’s rotator is marked with precise graduation which makes your previous subjective adjustment more accurate.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-size: 14px; font-family: ????, \" microsoft yahei color: rgb\u003eThe Askar 80PHQ inherits the optical design of the PHQ- family, adopting a 3+1 quadruplet lens structure which contains two pieces of ED glass that can effectively reduce chromatic aberration and enhance clarity and sharpness. It’s worth mentioning that all astrographs from PHQ- family come with an integrated lens combination rather than simply placing three major lenses and a corrector together in a line. In another word, the whole optical system cannot solely perform without any piece of these lenses. This structure design leads to a more rational lens arrangement, better vignette control and superior image quality. The focal ratio of 80PHQ is f\/7.5. It’s a “long” focal-ratio astrograph compared with other counterparts from Askar. It’s a little bit longer even compared with 107PHQ which is f\/7 in focal ratio.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-size: 14px; font-family: ????, \" microsoft yahei color: rgb\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-family: ????, \" microsoft yahei color: rgb\u003e\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eSome users may be frustrated that it’s hard to make a trade-off between 107PHQ and 80PHQ, since there seems to be so much in common. And especially for those who are new to astrophotography, the complicated designations and confusing numbers are really a major obstacle when they hopefully try to pick out just the proper one from oceans of dazzling products.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eIndeed, 170PHQ and 80PHQ are similar in many aspects partially because they are both the newly-developed refractive astrographs from the same family. However even if they all have excellent mechanical design and sophisticated optical system, there are noticeable differences between these two.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eAt the first glance, Askar 80PHQ is much more compact. 107PHQ is 603mm in length and weighs 5.7kg whereas 80PHQ is 448mm in length and weighs 3.9kg. So if your equatorial mount is not capable of holding heavy telescopes, or if you are quite tired of carrying a bulky long focal-ratio telescope travelling all around, then 80PHQ may be a great option.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eLike 107PHQ, you don't need to calculate the back focus distance within the connection limit. Besides, users don't need to add an extra 1× flattener due to its powerful flatfield optical design, which simplifies the operation.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left; font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\u003c\/span\u003e\u003c\/div\u003e \u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013742981231,"sku":"80PHQ","price":2174.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1648111412__64065.jpg?v=1766561462"},{"product_id":"askar-fra300-pro-quintuplet-astrograph","title":"Askar FRA300 Pro Quintuplet Astrograph","description":"\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family:\" arial new roman color:black\u003eSince their\r\ninception, Askar FRA series short focal ratio astrograph have been very well\r\nreceived by astronomical amateurs. This year, we launched the Askar FRA300 Pro —— the\r\nsmallest 60mm F\/5 Petzval astrograph with the fastest native focal ratio in the\r\nFRA series so far, its focal length is 300mm. The star is sharp and delicate.\r\nAt the center of its field of view, the RMS radius can reach 2um. Even a\r\nserious user can also be satisfied when it comes to the shape of stars. It\r\nperforms excellence with full-frame and supports 44mm imaging, which is a rare\r\nastrograph for amateur astronomers. Compared with F\/6 or F\/7,F\/5 can\r\neffectively reduce the exposure time, helps you get the same exposure in less\r\ntime. In addition, the entire OTA is compact, making it the portable choice for\r\nfield photographers.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe Askar FRA300 Pro 's\r\nobjective lens adopts a quintuplet fully air-spaced structure, including one\r\npiece of ED glass, it also adopts a fully-multi-coating to effectively remove\r\nstray light.\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family:\" arial new roman color:black\u003eIn particular, the\r\nrear group lens adopts the two pieces of far-separated refractive lenses, which\r\nimproves both the star quality and the aberration correction performance , and\r\nhas a very good control of full-frame peripheral light reduction.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThanks to the\r\nnative Petzval design, the user does not need to calculate the backfocus, as\r\nlong as the focus is within a certain range is the optimal position.\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family:\" arial yahei color:black\u003e\r\n\u003cbr\u003e\r\nMechanically\u003c\/span\u003e\u003cspan style=\"font-family:\" microsoft yahei mso-ascii-font-family:arial arial\u003e,\u003c\/span\u003e\u003cspan style=\"font-family:\" arial yahei color:black\u003eFRA300 Pro is\r\nassembled with high-quality CNC-machined components , wrapped with smooth spray\r\ncoating and light oxidation process, both beautiful and practical. The tube\r\nring design is equally lightweight and stylish. Despite the increased cost, we\r\nwant enthusiasts to use the FRA300 Pro that perform well in every way and are\r\nconsidered in every detail.\u003c\/span\u003e\u003cspan style=\"font-family:\" arial mso-fareast-font-family: new roman mso-fareast-language:en-ca\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe focuser is\r\n2.5\"rack-and-pinion focuser, which is solid and beautiful. It's designed\r\nwith dual-speed hand knobs, twin knobs for coarse adjustment and a fine\r\nadjustment knob to accurate the focus, equipped with a universal M48X0.75\r\nthread adapter. There are also two separate M54X0.75 and M48X0.75 adapters in\r\nthe standard kit for easy access to a variety of imaging equipment and\r\naccessories. The end is equipped with a 360° rotator, which is convenient for\r\nusers to rotate at any angle when shooting. \u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eFRA300 Pro also\r\ncomes standard with a multi-function handle and a 300mm vixen-style dovetail\r\nplate, which can be directly connected to various mounts and accessories, the\r\nmulti-functional handle can also be connected to the universal vixen-style\r\nfinder base. The 300mm dovetail plate allows the astrograph to maintain balance\r\non the mount.\u003c\/span\u003e\u003c\/p\u003e\u003cbr class=\"innova\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013766639727,"sku":"FRA300","price":1376.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FRA300-1__96609.jpg?v=1766562372"},{"product_id":"sharpstar-z4","title":"Sharpstar Z4 100mm f\/5.5 Sextuplet APO Astrograph","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Sharpstar Z4 is a 100mm f\/5.5 sextuplet APO astrograph designed for serious deep-sky imaging. Its 550mm focal length, integrated flat-field optical design, and 36mm image circle make it a strong match for APS-C astronomy cameras and DSLR\/mirrorless imaging setups.\u003c\/p\u003e\u003cp\u003eUnlike many refractors that require a separate flattener and careful spacing calculation, the Z4 is built as a self-flattened astrograph. For imagers, that means a cleaner camera train and fewer backfocus complications.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Z4 is best for intermediate and advanced astrophotographers who want a dedicated wide-to-medium-field imaging refractor with premium mechanical support. It is ideal for deep-sky imagers using APS-C sensors, cooled astronomy cameras, filter wheels, and guiding setups.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e100mm aperture and 550mm focal length for nebulae, galaxies, and larger deep-sky targets.\u003c\/li\u003e\n\u003cli\u003eSextuplet fully air-spaced APO design with two ED glass elements.\u003c\/li\u003e\n\u003cli\u003eIntegrated flat-field design with no separate flattener required.\u003c\/li\u003e\n\u003cli\u003e36mm image circle suitable for APS-C imaging systems.\u003c\/li\u003e\n\u003cli\u003eLarge 3.4-inch rack-and-pinion focuser with 1:10 fine adjustment.\u003c\/li\u003e\n\u003cli\u003e360-degree rotator for framing targets without disturbing focus.\u003c\/li\u003e\n\u003cli\u003eIncludes M86, M68, M54, and M48 adapter options.\u003c\/li\u003e\n\u003cli\u003eM48 adapter includes internal 2-inch filter thread.\u003c\/li\u003e\n\u003cli\u003e300mm Vixen-style dovetail and multifunction handle for easier setup and balancing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography with APS-C cameras.\u003c\/li\u003e\n\u003cli\u003eNebula, galaxy, star-field, and broadband imaging.\u003c\/li\u003e\n\u003cli\u003ePortable or semi-permanent imaging rigs.\u003c\/li\u003e\n\u003cli\u003eDedicated astrograph setups using filter wheels, OAGs, and cooled cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Z4 includes a rear M48×0.75 male thread and adapter path through M86×1, M68×1, M54×0.75, and M48×0.75. The M48 adapter supports 2-inch filters. It is designed for imaging and works best on a suitable equatorial or strain-wave mount capable of carrying the 4.3kg OTA plus camera, guider, filter wheel, and accessories.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBest treated as a dedicated imaging astrograph rather than a beginner visual telescope.\u003c\/li\u003e\n\u003cli\u003eDesigned around a 36mm image circle, so full-frame cameras may show limitations at the corners.\u003c\/li\u003e\n\u003cli\u003eA suitable mount, guide system, camera spacing setup, and imaging accessories are still required.\u003c\/li\u003e\n\u003cli\u003eAlthough the optical system is self-flattened, mechanical spacing and tilt control still matter for best results.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Sharpstar Z4 good for beginners?\u003c\/h3\u003e\u003cp\u003eIt is not the first telescope we would normally recommend for a beginner. It is better suited to imagers who already understand polar alignment, guiding, camera spacing, and image calibration.\u003c\/p\u003e\u003ch3\u003eWhat is the Z4 best used for?\u003c\/h3\u003e\u003cp\u003eThe Z4 is best used for deep-sky astrophotography with APS-C cameras, especially targets that benefit from a 550mm focal length.\u003c\/p\u003e\u003ch3\u003eDoes it need a separate flattener?\u003c\/h3\u003e\u003cp\u003eNo. The Z4 is designed as a self-flattened astrograph and does not require a separate field flattener.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eIt is primarily an imaging astrograph. Visual use may be possible depending on adapters, but this is not its main purpose.\u003c\/p\u003e\u003ch3\u003eWhat cameras are best matched to it?\u003c\/h3\u003e\u003cp\u003eAPS-C cooled astronomy cameras and APS-C DSLR\/mirrorless cameras are the best match for the 36mm image circle.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Sharpstar Z4 for astrophotographers who want a compact but serious 100mm imaging astrograph with integrated field correction. Choose it when you want a cleaner imaging train and do not want to add a separate flattener. Do not choose it as a first visual telescope or if your main camera is full-frame and you need fully corrected corners across the entire sensor.\u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":44013790789743,"sku":"Z4","price":3232.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1658369364__71155.jpg?v=1766562842"},{"product_id":"askar-65phq","title":"Askar 65PHQ","description":"\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"font-size: 12pt; color: rgb(68, 68, 68); font-family: Arial;\"\u003e65PHQ has a smaller size than other PHQ astrographs. 65PHQ has a focal ratio of f\/6.4 and a focal length of 416mm. Instead of the quadruplet structure of other PHQs, the 65PHQ is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations. With its self-flattening design, 65PHQ offers strong advantages in the astronomical shooting. It supports the full-frame image circle and has a fine spot diagram with tiny distortions of the peripheral stars.\u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: Arial;\"\u003e\u003cbr style=\"font-size: 12pt;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68);\"\u003e65PHQ comes with a telescopic lens hood, a high-quality CNC machined and painted tube, and attractive decorative parts. The OTA weighs 2kg, and the full package with tube rings, etc. weighs 2.8kg. The 2.5” rigid focuser comes with a new-type 360° rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2” female thread for installing filters.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; color: rgb(68, 68, 68); text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); text-align: justify;\"\u003e \u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; color: rgb(68, 68, 68); text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); text-align: justify;\"\u003eIt is also a nice choice for your visual observation. With different diagonals and various eyepieces and it can also achieve a perfect focus. It can even be used to observe planets with a super-high magnification eyepiece. The 65PHQ contains a multifunctional handle, a 300mm dovetail plate, and sturdy double tube rings. It is small in size and light in weight, which perfectly caters to your need for viewing and shooting.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013799506031,"sku":"65PHQ","price":1304.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1669614699_252520-_252520Edited__57188.1682636037.1280.1280.jpg?v=1766563134"},{"product_id":"starfield-gear-series-60mm-quad-f-5-astrograph","title":"Starfield Gear60Q 60mm f\/5 Petzval Astrograph","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eStarfield Gear60Q 60mm f\/5 Petzval Astrograph\u003c\/strong\u003e is a compact, wide-field imaging refractor designed for astrophotographers who want a fast, corrected optical system without the usual backspacing headaches. With a 60mm aperture, 300mm focal length, f\/5 focal ratio, built-in corrective optics, and a 44mm image circle, the Gear60Q is built for sharp, wide-field deep-sky imaging with modern astronomy cameras.\u003c\/p\u003e\u003cp\u003eThe Gear60Q was selected by \u003cstrong\u003eAstronomy Magazine\u003c\/strong\u003e for its 15th Annual 2025 Star Products list, and current vendor information notes that orders include a free 32mm guide scope.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWho Is This Product Best For?\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThis telescope is best for astrophotographers who want a portable, full-frame-capable wide-field astrograph for nebulae, large star fields, Milky Way regions, and travel imaging. It is also a strong option for imagers who want the simplicity of a Petzval-style system where spacing is far less demanding than a separate refractor-and-flattener setup.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWhy Choose This Product?\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for wide-field imaging:\u003c\/strong\u003e The 60mm f\/5 optical system provides a 300mm focal length that is ideal for large deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePetzval-style corrected design:\u003c\/strong\u003e The built-in corrective element helps deliver sharp stars across the field without needing a separate field flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFPL53 APO element:\u003c\/strong\u003e The objective design uses FPL53 as the APO element for strong colour correction and clean stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-frame image circle:\u003c\/strong\u003e The 44mm image circle is designed to illuminate a standard 36x24mm full-frame sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForgiving camera spacing:\u003c\/strong\u003e The working distance is listed as 41–61mm from the M48 thread, making setup easier than many conventional refractor systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging-focused focuser:\u003c\/strong\u003e The 2.5-inch rack-and-pinion focuser includes 1:10 reduction, 360-degree camera rotation, tilt adjustment, motor-focus capability, and an integrated 2-inch filter holder.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eNebula imaging\u003c\/li\u003e\n\u003cli\u003eLarge star fields and Milky Way regions\u003c\/li\u003e\n\u003cli\u003eTravel imaging setups\u003c\/li\u003e\n\u003cli\u003eFull-frame or APS-C camera imaging\u003c\/li\u003e\n\u003cli\u003eCompact refractor imaging rigs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe Gear60Q uses an M48 camera-side thread and provides a 41–61mm working distance from that thread. Because the optical correction is built into the telescope, a separate field flattener is not required. The telescope includes a 2.5-inch rack-and-pinion focuser, camera angle adjuster\/manual rotator, tilt adjustment plate, integrated handle, long dovetail plate, and soft case with die-cut foam.\u003c\/p\u003e\u003cp\u003eThe case is designed with space for an optional focusing motor, such as a compatible Starfield, Pegasus Astro, or ZWO focusing motor, and room for an imaging camera. The focuser also includes an integrated holder for 2-inch filters placed in front of the camera.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging-first design:\u003c\/strong\u003e This telescope is optimized as an astrograph for astrophotography rather than as a general-purpose visual telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount not included:\u003c\/strong\u003e A suitable tracking mount, camera, guide camera, controller, and power system are sold separately unless bundled.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessory planning still matters:\u003c\/strong\u003e Camera, focuser, filter, guiding, and cable choices should be matched to the imaging system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual setup still required:\u003c\/strong\u003e Although spacing is simplified, focus, tilt, balance, and guiding still affect final image quality.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h2\u003e\u003ch3\u003e\u003cstrong\u003eDoes the Gear60Q need a field flattener?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eNo. The Gear60Q has a built-in corrective element, so a separate field flattener is not required.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is the focal length?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Gear60Q is a 300mm focal length astrograph.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is the focal ratio?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe focal ratio is f\/5.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCan it cover a full-frame camera?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes. The vendor lists a 44mm image circle, which is intended to illuminate a standard 36x24mm full-frame sensor.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat camera spacing does it use?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe working distance is listed as 41–61mm from the M48 thread.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eDoes it include a case?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes. The Gear60Q includes a soft case with die-cut foam and space for accessories.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eOur Recommendation\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Starfield Gear60Q for imagers who want a compact, fast, full-frame-capable wide-field astrograph that is easier to set up than a separate refractor and flattener combination. It is especially well suited for large nebulae, wide star fields, and portable imaging rigs where optical simplicity, mechanical quality, and clean full-field stars matter.\u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44013799800943,"sku":"G60Q-05-01","price":1269.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/IMG_0002__65139.jpg?v=1766563148"},{"product_id":"askar-fma180-pro","title":"Askar FMA180 Pro 40mm f\/4.5 APO Astrograph","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Askar FMA180 Pro is a compact 40mm f\/4.5 sextuplet air-spaced APO astrograph designed for deep-sky astrophotography and visual observation. Building on the original FMA180, the Pro model introduces a 360° camera rotator, integrated finder base with bracket, and an internal focusing mechanism — all in a lightweight 0.8 kg package that delivers outstanding chromatic aberration correction across a 44mm full-frame image circle.\u003c\/p\u003e\n\n\u003cp\u003eThe sextuplet optical design uses a three-lens-front, three-lens-rear configuration with two ED (extra-low dispersion) glass elements, providing excellent colour correction and contrast across the full image field. The result is a sharp, flat, and colour-neutral image from edge to edge — well-suited for both one-shot colour and monochrome camera setups.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSextuplet APO Design\u003c\/strong\u003e — Six air-spaced lenses with 2× ED glass for exceptional chromatic aberration correction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Focusing Mechanism\u003c\/strong\u003e — Promotes stability and eliminates image shift during focus adjustments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° Camera Rotator\u003c\/strong\u003e — Allows framing adjustments without repositioning the mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Finder Base \u0026amp; Bracket\u003c\/strong\u003e — Supports guide cameras or finder scopes directly on the OTA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e150mm Vixen Dovetail Plate Included\u003c\/strong\u003e — Ready to mount on any Vixen-compatible saddle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-Frame Coverage\u003c\/strong\u003e — 44mm image circle supports APS-C and full-frame sensors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in Field Reducer\u003c\/strong\u003e — Optimized optical path for fast f\/4.5 imaging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 2\" Filter Thread\u003c\/strong\u003e — M48×0.75 rear connection with integrated 2\" filter thread for narrowband or broadband filters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Use\u003c\/strong\u003e — Can be used as a standalone astrograph or mounted to another telescope's finder base as a guide scope (with Vixen plate detached)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact and Lightweight\u003c\/strong\u003e — 167.5mm total length and 0.8 kg make it ideal for travel, dual-rig setups, and lightweight mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eOptical Design\u003c\/h2\u003e\n\u003cp\u003eThe FMA180 Pro uses a sextuplet air-spaced APO configuration — three lenses in front and three in the rear — two of which are ED glass elements. This design provides the chromatic aberration correction of a premium apochromat in a physically short tube, enabling a fast f\/4.5 focal ratio at just 180mm focal length. The 55mm standard back focus and M48×0.75 rear thread ensure compatibility with a wide range of imaging cameras, filter drawers, and off-axis guiders.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's New Compared to the FMA180\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdded 360° rotator for framing flexibility\u003c\/li\u003e\n  \u003cli\u003eAdded integrated finder base and bracket for guide scope or finder scope mounting\u003c\/li\u003e\n  \u003cli\u003eInternal focuser design replaces external focuser for improved rigidity\u003c\/li\u003e\n  \u003cli\u003e150mm Vixen dovetail plate included in the package\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImaging Performance\u003c\/h2\u003e\n\u003cp\u003eThe FMA180 Pro has been used to image a wide range of deep-sky objects including the Rosette Nebula, Orion Nebula, Spaghetti Nebula, Horsehead Nebula, IC 443, NGC 2174, and more — paired with cameras such as the ZWO ASI2600MM Pro, ASI294MC, and ASI294MM Pro. Its fast focal ratio and full-frame coverage make it well-suited for wide-field nebula imaging, Milky Way photography, and multi-panel mosaics.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e180mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eSextuplet air-spaced APO with 2× ED glass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm (full-frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e167.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.8 kg (including tube ring and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRear Thread\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 with built-in 2\" filter thread\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFocuser Type\u003c\/td\u003e\n\u003ctd\u003eInternal focusing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRotator\u003c\/td\u003e\n\u003ctd\u003e360°\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDovetail\u003c\/td\u003e\n\u003ctd\u003e150mm Vixen\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePackage Contents\u003c\/td\u003e\n\u003ctd\u003eFMA180 Pro OTA, instruction manual\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAskar FMA180 Pro OTA (with integrated rotator and finder base)\u003c\/li\u003e\n  \u003cli\u003e150mm Vixen dovetail plate\u003c\/li\u003e\n  \u003cli\u003eM48×0.75 rear adapter\u003c\/li\u003e\n  \u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCamera connection: M48×0.75 with built-in 2\" filter thread\u003c\/li\u003e\n  \u003cli\u003eStandard 55mm back focus is compatible with most imaging cameras and filter accessories\u003c\/li\u003e\n  \u003cli\u003eWorks as a guide scope or finder when mounted via finder base bracket (Vixen dovetail removed)\u003c\/li\u003e\n  \u003cli\u003eCompatible with ZWO ASIAIR, N.I.N.A., Ekos\/KStars, and other capture platforms via standard M48 connection\u003c\/li\u003e\n  \u003cli\u003eAF Kit available separately (Askar FMA180 Pro AF Kit — SKU: FMA180PRO-AF-KIT)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013819461743,"sku":"FMA180Pro","price":637.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FMA180__77144.png?v=1766563855"},{"product_id":"sharpstar-v-exchangeable-astrograph-system","title":"Askar V Modular APO Astrograph Telescope System","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Askar V is a modular APO astrograph system built around two interchangeable objective lenses and three rear optical modules. Instead of being limited to one fixed focal length, the system can be configured as a 60mm or 80mm refractor and paired with the included reducer, flattener, or extender to suit different observing and imaging targets.\u003c\/p\u003e\u003cp\u003eThe V60 objective lens uses a triplet APO design with two ED elements and operates natively at 360mm f\/6. The V80 objective lens also uses a triplet APO design with two ED elements and operates natively at 500mm f\/6.25. With the reducer, flattener, and extender modules, the Askar V becomes a flexible wide-field to medium-field imaging platform for deep-sky astrophotography and high-quality visual use.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Askar V is best for astronomers who want one portable refractor system that can cover multiple focal lengths. It is a strong option for beginner-to-intermediate imagers who want room to grow, advanced imagers who want a flexible travel setup, and visual observers who want a premium APO refractor system with more configuration options than a conventional single-purpose optical tube.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eModular system with both 60mm and 80mm APO objective lens options.\u003c\/li\u003e\n\u003cli\u003eIncludes reducer, flattener, and extender modules for multiple focal-length configurations.\u003c\/li\u003e\n\u003cli\u003eTriplet APO objective designs with two ED elements for improved colour correction.\u003c\/li\u003e\n\u003cli\u003eStandard 55mm back focus on the rear optical accessories for common imaging setups.\u003c\/li\u003e\n\u003cli\u003eM54 and M48 camera-side adapters with a built-in 2-inch filter thread.\u003c\/li\u003e\n\u003cli\u003eIncludes 1.25-inch and 2-inch visual adapters for visual observing.\u003c\/li\u003e\n\u003cli\u003eUseful for wide-field nebulae, star fields, galaxies, lunar viewing, and portable imaging rigs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography with the reducer module.\u003c\/li\u003e\n\u003cli\u003eFlat-field imaging with the flattener module.\u003c\/li\u003e\n\u003cli\u003eLonger focal-length imaging or visual observing with the extender module.\u003c\/li\u003e\n\u003cli\u003eTravel astronomy setups where one optical system needs to cover multiple roles.\u003c\/li\u003e\n\u003cli\u003eVisual observing with the included 1.25-inch and 2-inch adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe rear accessories can be rotated to the correct 60mm or 80mm scale depending on whether the V60 or V80 objective lens is installed. The rear end of each accessory provides M54 and M48 adapter options, includes a built-in 2-inch filter thread, and uses a standard 55mm back focus for camera connection. The system also includes a 360-degree rotator, finder base, 1.25-inch and 2-inch visual adapters, and a multi-function handle that can accept a Vixen-style finder base and other accessories.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThis is a modular system, so the user must select the correct objective lens and accessory scale for each setup.\u003c\/li\u003e\n\u003cli\u003eAstrophotography users still need correct 55mm spacing, camera adapters, a camera, and a suitable mount.\u003c\/li\u003e\n\u003cli\u003eThe reducer, flattener, and extender are not interchangeable with every telescope; they are intended for the Askar V system.\u003c\/li\u003e\n\u003cli\u003eIt is not the simplest option for someone who wants a single fixed-focal-length refractor with no setup decisions.\u003c\/li\u003e\n\u003cli\u003eFor serious planetary imaging, a longer focal length telescope may be a better choice.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Askar V good for beginners?\u003c\/h3\u003e\u003cp\u003eYes, but it is best for beginners who are comfortable learning how optical configurations work. The system is flexible, but users must choose the correct lens and rear accessory combination.\u003c\/p\u003e\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\u003cp\u003eIt is best used for flexible deep-sky astrophotography, portable imaging, wide-field targets, and visual observing with a high-quality APO refractor system.\u003c\/p\u003e\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\u003cp\u003eBoth. The Askar V supports astrophotography with reducer, flattener, and extender modules, and it also includes 1.25-inch and 2-inch visual adapters for observing.\u003c\/p\u003e\u003ch3\u003eWhat cameras or accessories can it connect to?\u003c\/h3\u003e\u003cp\u003eThe rear accessories provide M54 and M48 camera-side adapter options and use a standard 55mm back focus. The built-in 2-inch filter thread is useful for common mounted astronomy filters.\u003c\/p\u003e\u003ch3\u003eWhat makes it different from a regular refractor?\u003c\/h3\u003e\u003cp\u003eA regular refractor typically has one fixed aperture and focal length. The Askar V uses interchangeable objective lenses and rear optical modules, giving the user multiple focal-length and focal-ratio combinations in one system.\u003c\/p\u003e\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\u003cp\u003eDo not choose it if the customer wants the simplest possible fixed telescope, does not want to manage optical configurations, or primarily needs a long focal length planetary telescope.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Askar V for customers who want one premium, portable APO system that can handle multiple observing and imaging roles. It is especially attractive for imagers who like wide-field targets but also want the option to extend focal length when needed. Choose a simpler fixed refractor if you want fewer setup choices, or a larger\/longer telescope if your main goal is high-magnification planetary work.\u003c\/p\u003e\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following vendor graphics show the Askar V system layout, configuration details, and optical report information.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/5b699f4f-73e3-4756-9541-ae4ab85b9c2d.jpg\" alt=\"Askar V modular APO astrograph system layout for V60 and V80 configurations\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/020d4523-d918-42b1-9cb9-736dedd8e27e.jpg\" alt=\"Askar V astrograph product configuration and accessory diagram\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/4546ff99-a021-4a77-83f0-70edf7fab689.jpg\" alt=\"Askar V modular telescope optical configuration report graphic\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/4d64c202-6f6c-4390-9809-99f629a3540b.jpg\" alt=\"Askar V astrograph technical configuration chart\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/fe79dc27-4b93-46cf-8269-e7e51aff4507.jpg\" alt=\"Askar V optical performance report chart\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/9c335bac-8067-47f3-84c4-12fb3b362cec.jpg\" alt=\"Askar V optical report and spot diagram chart\"\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013886996591,"sku":"ASK-V","price":2611.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/V1__38049.jpg?v=1766565549"},{"product_id":"rasa-8-imaging-kit","title":"RASA 8\" Imaging Kit","description":"\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e\u003cstrong\u003eThe Celestron RASA 8\" Imaging Kit includes the RASA 8\" Astrograph, The Celestron light pollution filter for the RASA 8\", and the Celestron Dual band Ha and OIII high speed filter.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003eCapture spectacular wide-field deep sky images in seconds with Celestron’s new portable astrograph, the 8” Rowe-Ackermann Schmidt Astrograph (RASA). This incredibly fast f\/2.0 system is the perfect companion to today’s color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, it’s easy to transport your 8” RASA to the most remote dark sky locations.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eRASA Performance Made for Everyone\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003eThe 8” RASA is an imaging telescope that delivers a flat field without optical aberrations for razor sharp stars across a wide field of view. It can capture stunning deep-sky astronomical images without the challenges typically presented by longer focal length instruments at a fraction of the cost of those systems.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003eThe latest addition to the RASA family, this 8” version is a much more portable and affordable version of the heralded RASA 11, which was introduced to much acclaim in 2014. With the 8” RASA joining the lineup, a wider range of astroimagers can enjoy the benefits of the RASA design. It has many of the same thoughtfully designed features as its “big brother” RASA 11, including the integrated air-cooling system, internal filter mount, and sturdy CGE dovetail mounting bar.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003ePurely designed for imaging, the 8” RASA cannot be used visually. The prime focus focal plane is located at the front of the optical system, so it cannot accommodate a traditional eyepiece.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eShorter Exposure Times and Virtual “Real-Time” Observing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003eSince it is an F\/2.0 optical system, imagers can use shorter exposure times to capture detail in faint objects. When combined with sensitive cameras and the proper “live stacking” software, the 8” RASA can provide an almost real-time observing experience. View images on a computer instantly that are brighter and more detailed than can be seen in much bigger telescopes with the naked eye.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003eBecause shorter exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The 8” RASA’s relatively short 400mm focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required. Weighing only 17 lb, this optical tube pairs perfectly with a wide variety of mounts.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eUltra-Stable Focus System\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003eWith the launch of the 8” RASA, Celestron is unveiling a new focuser design that mitigates lateral movement of the primary mirror when focusing, slewing, or tracking with the astrograph. Focusing is easier, more accurate, and more stable than ever. The key to the Ultra-Stable Focus System is two sets of precision bearings that are precisely aligned and tested during assembly to ensure optimal results.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eBuilt for Today’s Latest Cameras\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px;\"\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. It is optimized for sensors with up to a 22mm diagonal, but still performs well with larger (up to 32mm diagonal) sensors. As such, it works well with APS-C sized sensors used in many mirrorless cameras.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px; padding: 0px;\"\u003eCamera adapters to connect C-mount cameras and cameras which mount with M42 threads are included. Celestron offers optional adapters to connect your 8” RASA to Sony or Canon mirrorless cameras.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44014075904111,"sku":"91079","price":3612.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/91073_8in_Rowe-Ackermann_Schmidt_Astrograph_01_570x3802x__61972.1682635176.1280.1280__22229.jpg?v=1766569753"},{"product_id":"sv555-astrophotography-telescope-apo-54mm-f-4-5-astrograph","title":"SV555 Astrophotography Telescope APO 54mm f\/4.5 Astrograph","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNew Upgrade:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSurface Finish Upgrade\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWeight Reduction 90g+\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLens Hood from 97mm to 93mm\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFocus Travel 2.67mm to 3.22mm\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eMore clear image; APO astro camera lens consists of a 3-group 5-piece petzval objective lens structure; which includes a set of triplet lens; bringing you a clearer image;\u003c\/li\u003e\n\u003cli\u003e44mm full-frame; This telephoto lens can avoid aperture blocking; whether mirrorless camera; SLR camera; or deep-sky camera; you can photograph clear image without trouble;\u003c\/li\u003e\n\u003cli\u003eMounting kit available; SV555 astrograph is equipped with a bracket and belt for EAF; you can get an accurate angle to photograph quickly and conveniently;\u003c\/li\u003e\n\u003cli\u003eSingle-speed focus; the telescope camera lens supports fine adjustment; enabling you to adjust the photography angle accurately for fast shooting;\u003c\/li\u003e\n\u003cli\u003eVarious aperture range; the astronomical photography lens can adjust the aperture from F22 to F4.5; meeting a variety of use needs; the included graded adjustment ring and scale also make it convenient for photography by preventing accidental touching;\u003c\/li\u003e\n\u003cli\u003eCompatibility; SV555 telescope camera lens features an M48x0.75 filter thread to install the 2\" filter; additionally; the V-style \u0026amp; Arca-Swiss quick-release system is compatible; flexible and easy to use; enhancing the efficiency;\u003c\/li\u003e\n\u003cli\u003eConvenient to use; the APO astro camera lens is featured with a handle; bracker; and dovetail plate; making it more convenient to use the lens when shooting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGet SV555 Full Review by\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.youtube.com\/watch?v=K0xrhftRYvU\" target=\"_blank\" rel=\"noopener\"\u003e@Cuiv, The Lazy Geek\u003cspan\u003e \u003c\/span\u003e\u003c\/a\u003e \u003c\/strong\u003e\u003cstrong\u003e   \u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cspan\u003eSV555 New Upgrade, New Experience\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cimg title=\"svbony sv555 artrograph telescope.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20250326\/6387860494034395581518285.jpg\" alt=\"svbony sv555 artrograph telescope.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWe' ve updated the \u003cstrong\u003esandblasting process from a 320-grit to a 280-grit finish\u003c\/strong\u003e.This gives the new version a more refined, matte texture that not only looks better but also resists fingerprints. You'Il see a clear dlifference in the side-by-side comparison we' re showing here. Next, we've managed to\u003cstrong\u003e reduce the weight of the tube by over 90 grams\u003c\/strong\u003e. This makes the new version \u003cstrong\u003elighter \u003c\/strong\u003eand more \u003cstrong\u003eportable\u003c\/strong\u003e. The third improvement is in the reduced lens hood. The \u003cstrong\u003eouter diameter of the lens hood \u003c\/strong\u003eis\u003cstrong\u003e reduced from 97mm to 93mm \u003c\/strong\u003eand\u003cstrong\u003e the wall thickness from the 3mm to 2.5mm\u003c\/strong\u003e. This makes the hood more compact and lightweight while maintaining its functionality. Finally, we’ve increased the \u003cstrong\u003efocus travel from 2.67mm to 3.22mm\u003c\/strong\u003e. This provides a smoother and more precise focusing experience, especially for astrophotography. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"6386510247663317613099217.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241114\/6386717316224383064745589.jpg\" alt=\"6386510247663317613099217.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSvbony SV555 professional astronomical photography telescope APO is designed for deep-sky photography. Petzval objective lens structure includes a triplet lens and 2-ED glasses offering a clear image without aperture blocking. 44mm full frame has a wide field of view and provides a clearer image. EAF kit and fine adjustment make it convenient to shoot. F22 to F4.5 variable aperture meets different use needs. For photography users, SV555 will be a better choice to use.  It is going to be an ace travel lens for your journey\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"12.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510249477841506783642.jpg\" alt=\"12.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003e \u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003eTest Report Interferogram\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241018\/6386486834241502236512928.webp\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"14.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510251659207792553982.jpg\" alt=\"14.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSV555 astrophotography telescope camera lens can adjust the aperture from F22 to F4.5; professional astronomical photography lens includes a graded adjustment ring and scale; keeping the parameters the same without changing due to accidental touching; increasing the accuracy of shooting, meeting a variety of use needs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"16.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510253006331907116268.jpg\" alt=\"16.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe SV555 ED APO astro camera lens uses integrated structure and light weight; increasing the ease of use when shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"18.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510266953046968828259.jpg\" alt=\"18.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSV555 APO astro camera lens is featured with a handle; bracker; and dovetail plate; making it more convenient to use the lens when shooting. \u003c\/span\u003e\u003cspan\u003eWith a lockable 360° rotator and rotatable lens tube, the APO telephoto lens is convenient for adjusting and saving the angle. Whether daily shooting or astrophotography, you can find a suitable angle for a better shooting effect.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCompatible with cameras; the M72 front filter thread can be connected to the camera filter for daily photography; the design increases the flexibility and ease of the APO telephoto lens. Dual rotate design; lockable 360° rotator and lens tube help you adjust the angle accurately; astrophotography telescope offers a better photography effect to you.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"37.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510272454340885031433.jpg\" alt=\"37.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"21.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390716980020453879792.jpg\" alt=\"21.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIncreased image quality; SV555 APO astro camera lens consists of a 3-group 5-piece petzval objective lens structure; which includes a set of triplet lens; bringing you a clearer image. Petzval objective lens structure with triplet lens offers a flatter field of view; and improves assembly efficiency and accuracy; you can get an enhanced image quality even on the edge of star point.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"23.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390717009110653836612.jpg\" alt=\"23.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"25.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390717038213782832883.jpg\" alt=\"25.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"27.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390717067157214060536.jpg\" alt=\"27.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"31.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390717096730747469774.jpg\" alt=\"31.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"33.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510291033527916158863.jpg\" alt=\"33.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSV555 astro APO telescope camera lens features an M48x0.75 filter thread to install the 2\" filter; additionally; the V-style \u0026amp; Arca-Swiss quick-release system is compatible; flexible and easy to use; enhancing the efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":44014095466607,"sku":"F9395A","price":799.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sv555-2__15353.jpg?v=1766570903"},{"product_id":"starfield-optics-gear-70q-70mm-quadruplet","title":"Starfield Optics Gear70Q 70mm f\/5 Quad Petzval Astrograph","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Starfield Optics Gear70Q is a 70 mm f\/5 quadruplet Petzval astrograph built for wide-field deep-sky imaging. At 350 mm focal length it holds large nebulae, open clusters and the bigger galaxies inside a single frame, and the four-element Petzval layout corrects the field inside the telescope rather than at the camera end. The corrected image circle is 44 mm, which covers a full-frame sensor, so there is no separate field flattener to buy, thread on, or space out.\u003c\/p\u003e\n\u003cp\u003eThe camera end is an M48 male thread, fed by a Camera Angle Adjuster that carries a female M54 thread and an included M54-to-M48 step-down adapter. Working distance from that M48 thread runs 41–61 mm — a 20 mm window rather than a single figure, which leaves room for a filter drawer or an off-axis guider alongside the camera. The Gear70Q is an imaging instrument: Starfield Optics does not intend the Gear series quads for visual observing.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It’s For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you photograph the sky rather than look through it, and you want the widest, flattest field you can get out of a small refractor.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers working wide:\u003c\/strong\u003e 350 mm at f\/5 is the range where the North America Nebula, the Pleiades and the Andromeda Galaxy sit comfortably inside the frame instead of running off the edges.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame and APS-C shooters:\u003c\/strong\u003e the 44 mm corrected circle covers both, whether you are using a cooled astronomy camera or a DSLR or mirrorless body.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTravel and grab-and-go rigs:\u003c\/strong\u003e a 70 mm f\/5 tube is light enough for a small tracker-class or portable equatorial mount, and the supplied case is cut so the focus motor stays mounted between sessions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnyone building their first serious astrograph:\u003c\/strong\u003e the Petzval design removes the flattener spacing exercise entirely, which is the step that most often costs a beginner their corner stars. The wide 41–61 mm working distance means an imaging train that is close is also correct.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVisual observers are the one group this is not built for — see \u003cem\u003eGood to Know Before You Order\u003c\/em\u003e below.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e70 mm (2.8″) aperture at f\/5:\u003c\/strong\u003e a fast focal ratio that shortens the exposure needed to reach faint nebulosity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e350 mm focal length:\u003c\/strong\u003e wide-field framing for large emission nebulae, open clusters and the nearer galaxies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFour-element quad Petzval design:\u003c\/strong\u003e field correction is built into the optical train, so no additional flattener is required for wide-field imaging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFPL-53 glass:\u003c\/strong\u003e the high-dispersion element that controls colour error and keeps bright stars free of violet fringing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics:\u003c\/strong\u003e maximises transmission and holds down internal reflections around bright stars.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e44 mm corrected image circle:\u003c\/strong\u003e full-frame coverage, edge to edge.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.5″ dual-speed rack-and-pinion focuser:\u003c\/strong\u003e coarse and fine knobs, with the load capacity for a camera, filter wheel and off-axis guider together.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCamera Angle Adjuster (CAA):\u003c\/strong\u003e rotates the sensor to your chosen framing angle without breaking the imaging train apart.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVixen-style dovetail plate and heavy-duty rings:\u003c\/strong\u003e mounts on the widest range of equatorial heads, with accessory holes on the rings and a finder-shoe dovetail on the carry handle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitted soft case:\u003c\/strong\u003e accessory cutouts inside, including one that lets the focus motor stay on the drawtube between sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical \u0026amp; Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA Petzval is a refractor with its corrector built in. Where a conventional doublet or triplet astrograph puts two elements at the front and relies on a separately purchased flattener near the camera to straighten the field, the Gear70Q carries four elements in two groups — the objective at the front and a correcting group further down the tube. The field arrives at the sensor already flat. That is why the specification sheet lists a 44 mm corrected circle with no flattener named alongside it: the correction is not an accessory, and there is no second optic whose spacing you have to solve.\u003c\/p\u003e\n\u003cp\u003eThe practical consequence shows up in the working distance. On a flattener-based system the backfocus figure is a target you hit within a millimetre or so, and missing it shows as elongated corner stars. On the Gear70Q the usable range is 41–61 mm from the M48 output, which is wide enough that a camera, a filter drawer and an adapter or two can be stacked in any sensible order and still land inside it. FPL-53 handles the colour correction across that field, and the 2.5″ dual-speed rack-and-pinion focuser carries the resulting imaging train without the drawtube sag that costs sharpness on longer exposures. A tilt adjustment accessory is supplied with the Gear series for the rare case where the sensor plane needs squaring up after everything is threaded and focused.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky astrophotography:\u003c\/strong\u003e large emission and reflection nebulae, open clusters, and galaxies with generous apparent size.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMosaic panels:\u003c\/strong\u003e a flat 44 mm field makes adjacent panels stitch without corner mismatch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNarrowband imaging from light-polluted skies:\u003c\/strong\u003e f\/5 keeps exposure times workable behind narrow filters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePortable and travel imaging:\u003c\/strong\u003e dark-sky trips, star parties, and backyard setups where the rig goes out and comes in each night.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA second scope on a dual-rig mount:\u003c\/strong\u003e short enough and light enough to ride alongside a longer instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCamera thread:\u003c\/strong\u003e the final telescope-side output is M48 male. Most cooled astronomy cameras and DSLR\/mirrorless T-adapters reach it directly or with a single M48 spacer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRotator thread:\u003c\/strong\u003e the CAA presents a female M54 thread, and the M54-to-M48 step-down adapter comes in the box. An M54 imaging train can also be built directly off the CAA if you prefer the larger thread.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking distance:\u003c\/strong\u003e 41–61 mm measured from the M48 thread. Sensor-to-flange distances vary by camera, so if you would like a second pair of eyes on your train, send us your camera, filter drawer and adapter list and we will add it up with you.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e none needed, and none is offered for this model. The Petzval group does that job.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e a Vixen-style dovetail plate is fitted to the supplied rings, which fits the standard saddle on the great majority of equatorial mounts. The rings carry accessory holes, and the handle has a finder-shoe dovetail for a guide scope or a polar scope.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGuiding:\u003c\/strong\u003e at 350 mm a small guide scope is the usual approach — the \u003ca href=\"\/products\/starfield-50mm-guide-scope-gen-ii\"\u003eStarfield 50 mm Guide Scope Gen II\u003c\/a\u003e mounts to the finder shoe on the handle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDew control:\u003c\/strong\u003e a heater strap sized to the dew shield paired with the \u003ca href=\"\/products\/starfield-four-channel-four-port-dew-controller\"\u003eStarfield four-channel dew controller\u003c\/a\u003e keeps the objective clear on damp nights. The add-on selector on this page carries the matched strap; if you are ordering by phone we will size it for you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThis is an imaging telescope, not a visual one.\u003c\/strong\u003e Starfield Optics states that the Gear series quads are not intended for visual observing. There is no diagonal or eyepiece path in the design, and the M48 output goes to a camera.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFocal length suits wide fields, not planets.\u003c\/strong\u003e At 350 mm the image scale is built for large deep-sky targets. Planetary and lunar close-ups are the province of much longer focal lengths.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA camera adapter is still yours to supply.\u003c\/strong\u003e The M54-to-M48 step-down comes with the telescope; the spacer or T-adapter that matches your particular camera’s backfocus does not. Send us the camera model and we will tell you what it takes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA tracking mount is assumed.\u003c\/strong\u003e Deep-sky exposures at 350 mm need an equatorial or tracker-class mount; the telescope ships with the dovetail plate that attaches to one, not the mount itself.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShipping weight is 12 lb as published by Starfield Optics\u003c\/strong\u003e — that figure covers the telescope in its case with the supplied rings and plate, so the tube alone rides lighter on the mount than the number suggests.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo — this is one of the more forgiving imaging scopes to get right. The Petzval correction is internal, so there is no flattener to buy or space, and the working distance is a 41–61 mm range rather than a single target. Thread the camera to the M48 output, focus, and the corners come with it. If your train includes a filter drawer or off-axis guider, send us the parts list and we will confirm the stack lands in range before you order.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a field flattener?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The four-element Petzval design corrects the field internally, and Starfield Optics does not offer or require a flattener for this model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it cover my full-frame camera?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes — the corrected image circle is 44 mm, which takes in the 43.3 mm diagonal of a full-frame sensor. APS-C and the smaller cooled astronomy sensors sit well inside it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it visually with an eyepiece?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStarfield Optics does not intend the Gear series quads for visual observing. If visual is what you are after, the Starfield ED doublets are the range built for it, and we are happy to talk through the difference.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat cameras and threads does it take?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe telescope-side output is M48 male, reached through a CAA with a female M54 thread and the included M54-to-M48 adapter. Cooled astronomy cameras from the usual makers, and DSLR or mirrorless bodies on a T-adapter, all connect from there.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat else do I need to start imaging?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA tracking mount, a camera with the right spacer for its backfocus, and power. Guiding, filters and dew control are the usual next additions rather than requirements on night one.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is it different from the Gear60Q?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Gear70Q steps the aperture up from 60 mm to 70 mm and the focal length from 300 mm to 350 mm, both at f\/5. The extra aperture gathers more light for the same exposure, and the longer focal length trades a little field width for image scale. Both share the quad Petzval layout and the M48 imaging interface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen is it not the right choice?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor visual observing, for planetary and lunar high-resolution work, and for small targets that want a long focal length. For wide-field deep-sky imaging on any sensor up to full frame, it is squarely in its element.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 70 mm f\/5 quad Petzval astrograph at 350 mm focal length, with a 44 mm flat field that covers full frame and no flattener to buy or space. It connects at M48 with a generous 41–61 mm working distance, rides on a Vixen dovetail, and travels in a fitted case with the focus motor left in place — a wide-field imaging scope that asks for a tracking mount, a camera, and very little else.\u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44014104215663,"sku":"G70Q-05-01","price":1999.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/2__19188__79269.jpg?v=1766571352"},{"product_id":"just-add-camera-imaging-system-2","title":"Just Add Camera Imaging System 2","description":"\u003ch2 data-start=\"153\" data-end=\"222\"\u003e\u003cstrong data-start=\"156\" data-end=\"222\"\u003eSkywatcher AL-EQ55i Mount + Starfield Gear60Q Astrograph Combo\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"224\" data-end=\"278\"\u003e\u003cstrong data-start=\"228\" data-end=\"278\"\u003eAstrophotography Anywhere—Compact and Powerful\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"280\" data-end=\"562\"\u003eCombine the portable tracking capability of the Skywatcher AL-EQ55i mount with the exceptional optics of the Starfield Gear60Q Astrograph (60mm aperture, 300mm focal length, f\/5 optics). Its quadruplet lens design ensures sharp, color-corrected images without additional correctors.\u003c\/p\u003e\n\u003ch3 data-start=\"564\" data-end=\"597\"\u003e\u003cstrong data-start=\"568\" data-end=\"597\"\u003eWide, Ideal Field of View\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"598\" data-end=\"734\"\u003e\n\u003cli data-start=\"598\" data-end=\"666\"\u003e\n\u003cstrong data-start=\"600\" data-end=\"634\"\u003eAPS-C DSLR (~23.5mm × 15.6mm):\u003c\/strong\u003e Approximately \u003cstrong data-start=\"649\" data-end=\"664\"\u003e3.9° × 2.6°\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"667\" data-end=\"734\"\u003e\n\u003cstrong data-start=\"669\" data-end=\"704\"\u003eASI533MC-Pro (11.3mm × 11.3mm):\u003c\/strong\u003e Approximately \u003cstrong data-start=\"719\" data-end=\"734\"\u003e2.1° × 2.1°\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"736\" data-end=\"779\"\u003e\u003cstrong data-start=\"740\" data-end=\"779\"\u003ePerfect Targets Throughout the Year\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"780\" data-end=\"1010\"\u003e\n\u003cli data-start=\"780\" data-end=\"814\"\u003e\n\u003cstrong data-start=\"782\" data-end=\"793\"\u003eSpring:\u003c\/strong\u003e Virgo Galaxy Cluster\u003c\/li\u003e\n\u003cli data-start=\"815\" data-end=\"898\"\u003e\n\u003cstrong data-start=\"817\" data-end=\"828\"\u003eSummer:\u003c\/strong\u003e North America Nebula (NGC 7000) and Pelican Nebula (IC 5070) together\u003c\/li\u003e\n\u003cli data-start=\"899\" data-end=\"933\"\u003e\n\u003cstrong data-start=\"901\" data-end=\"910\"\u003eFall:\u003c\/strong\u003e Heart and Soul Nebulae\u003c\/li\u003e\n\u003cli data-start=\"934\" data-end=\"1010\"\u003e\n\u003cstrong data-start=\"936\" data-end=\"947\"\u003eWinter:\u003c\/strong\u003e Pleiades (M45) star cluster and surrounding reflection nebulae\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1012\" data-end=\"1040\"\u003e\u003cstrong data-start=\"1016\" data-end=\"1040\"\u003eTechnical Highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1041\" data-end=\"1342\"\u003e\n\u003cli data-start=\"1041\" data-end=\"1124\"\u003e\n\u003cstrong data-start=\"1043\" data-end=\"1053\"\u003eMount:\u003c\/strong\u003e AL-EQ55i offers accurate tracking in a portable, user-friendly design.\u003c\/li\u003e\n\u003cli data-start=\"1125\" data-end=\"1246\"\u003e\n\u003cstrong data-start=\"1127\" data-end=\"1141\"\u003eTelescope:\u003c\/strong\u003e Starfield Gear60Q Astrograph with integrated field flattener, ensuring pinpoint stars to the image edge.\u003c\/li\u003e\n\u003cli data-start=\"1247\" data-end=\"1342\"\u003e\n\u003cstrong data-start=\"1249\" data-end=\"1282\"\u003eFast Quadruplet Optics (f\/5):\u003c\/strong\u003e Exceptional imaging capability with reduced exposure times.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1755\" data-end=\"1830\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eAchieve professional results with maximum portability, ease, and precision.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is included in the package:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eAL-EQ55 Mount\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStarfield Gear60 Quad f\/5 astrograph\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStarfield 32mm Guide package with ASI120MM-Mini\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003e*\u003ca href=\"%%GLOBAL_ShopPathSSL%%\/eq-al-55i-pier-extension\/\"\u003ePier extension\u003c\/a\u003e, \u003ca title=\"DSLR Camera mount\" href=\"%%GLOBAL_ShopPathSSL%%\/t-rings\/\"\u003eDSLR Camera mount\u003c\/a\u003e, \u003ca title=\"Hand Controller sold separately\" href=\"%%GLOBAL_ShopPathSSL%%\/skywatcher-v5-hand-controller-synscan\/\"\u003eHand Controller sold separately\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Skywatcher AL-EQ55 Mount \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe EQ-AL55i Pro is the perfect entry to intermediate level equatorial platform for observers and imagers looking to build a serious rig without breaking the bank.  \u003c\/p\u003e\n\u003cp\u003eRedesigned from the popular EQM-35 the EQ-AL55i features fully encased motor housings and two positions for the counterweight bar and optional pier extension making this mount the perfect choice for observers and imagers in lower latitudes.\u003c\/p\u003e\n\u003cp\u003eFeaturing Wi-Fi, Bluetooth SynScan, and ASCOM telescope control, 22-pound payload capacity, a guidescope and SNAP port, the EQ-AL55i is a perfect choice for a mid-size imaging mount.\u003c\/p\u003e\n\u003cp\u003eThis versatile mount is equipped with a two-position adjustable counterweight bar, allowing it to be used at all latitudes from 0° to 90° and thus avoiding the problems that arise with most other mounts at extreme polar altitudes. It is therefore an ideal travelling mount!\u003c\/p\u003e\n\u003cp\u003eThe EQ-AL55i is fully controlled with a smartphone via the built-in WLAN module and the free SynScan Pro app software. This app is available for iOS and Android.The EQ-AL55i Pro mount is equipped with an illuminated polar finder scope for precise alignment to the celestial pole.\u003c\/p\u003e\n\u003cp\u003eIt offers connections for USB-C, autoguider and an \u003cstrong\u003eoptionally\u003c\/strong\u003e available SynScan hand control box. It also has a socket for triggering a DSLR camera.\u003c\/p\u003e\n\u003cp\u003eThe EQ-AL55i Pro is a very portable mount for mobile astrophotographers, but also for visual observers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEquatorial with Go-To\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad capacity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e10kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlew speed:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUp to 4° per second\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower input:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e12V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutoguider port:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eST4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtocols:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSynScan, ASCOM via Wi-Fi or USB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e14.8kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Starfield Gear60 f\/5 Quad astrograph\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe Starfield 60mm quadruplet f\/5 Petzvel APO will take your wide field imaging game to new levels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe development of the GÉAR60Q telescope placed a great emphasis on achieving very high standards in terms of its optical and mechanical quality. It features a built-in corrective element within the focusing tube, which is positioned at an optimized distance from the main objective. This design is specifically optimized for astrophotography, ensuring that the camera is automatically positioned at the correct distance for optimal sharpness across the entire field.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe telescope boasts 2-element lens with FPL53 as the APO element, resulting in exceptional color correction. Even bright stars are clearly visible without any color fringing. The 2-element corrector, built into the focus tube, ensures consistent sharpness across the entire field. Additionally, this apo is compatible with cameras featuring full-frame sensor with its 44mm image circle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThis 300mm Quad has the features that should be standard on all astrographs. A 2.5\" focuser with a camera angel adjuster, also known as a manual rotator, also boasts a tilt adjustment plate. Integrated handle for accessories and a long dovetail plate round out the package.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eMulticoated optics are standard and each Gear series telescope comes with a soft case with die cut foam. The case has been designed to accommodate the optional focusing motor, or a Pegasus Astro or ZWO focusing motor, and a spot for your imaging camera.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe Optional focusing motor can easily be disengaged to allow for manual focusing with a simple twist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003eThe Petzval design means that finding the perfect spacing is a thing of the past. Just focus your camera and take your images. The working distance is 41-61mm from the 48mm thread, and a 44mm image circle will illuminate a standard 36x24mm sensor.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe 2.5\" Rack and Pinion focuser boasts an exceptional standard of performance. The drawtube is securely supported by ball bearings, ensuring a smooth and stable operation. Providing exceptional accuracy and allows for the use of heavy cameras and accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe focuser also offers a variety of convenient and useful features, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA camera angle adjuster or Rotator with allows for 360° rotation\u003c\/li\u003e\n\u003cli\u003eA precise tilter mechanism, which allows for adjustment to match the telescope to the camera for optimal performance.\u003c\/li\u003e\n\u003cli\u003eA 1:10 gear reduction for precise focusing\u003c\/li\u003e\n\u003cli\u003eThe capability to connect a motor focus.\u003c\/li\u003e\n\u003cli\u003eAn integrated filter holder for 2\" filters which is placed in front of the camera.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eIntegrated handle for accessories and a long dovetail plate round out the package, and a softsided case with room for accessories\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003ch3 data-start=\"1215\" data-end=\"1265\"\u003e\u003cstrong data-start=\"1219\" data-end=\"1265\"\u003eEnhance Your Setup with the ZWO ASIAIR Pro\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1266\" data-end=\"1681\"\u003eTo elevate this astrophotography kit even further, consider adding the ZWO ASIAIR Pro. This innovative device streamlines your imaging sessions by offering effortless camera control, precise auto-guiding, plate-solving, and live stacking—all via an intuitive smartphone or tablet interface. The ASIAIR Pro complements this portable setup perfectly, making astrophotography more enjoyable and efficient in the field.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Ontario Telescope and Accessories","offers":[{"title":"Default Title","offer_id":44014106869871,"sku":"S30515-G60","price":2999.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/JustAddCamera2_1__62462.png?v=1766571483"},{"product_id":"askar-151phq-quadruplet-apo","title":"Askar 151PHQ Quadruplet APO","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Askar 151PHQ is a premium 151mm f\/7 flatfield quadruplet APO astrograph designed for serious deep-sky imaging and high-end visual observing. With a 1057mm focal length, two ED glass elements, and a self-flattening optical design, it delivers a large corrected field without requiring a separate field flattener for native imaging.\u003c\/p\u003e\n\u003cp\u003eThe 151PHQ is the largest model in Askar’s PHQ series and is built for astrophotographers who want refractor contrast, large-aperture light gathering, and a 60mm image circle for modern large-sensor cameras. Its longer focal length makes it especially useful for galaxies, nebula details, star clusters, and high-resolution deep-sky targets where smaller wide-field refractors may not provide enough scale.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Askar 151PHQ is best for intermediate to advanced astrophotographers, observatory users, and experienced visual observers who have a mount capable of carrying a large refractor. It is a strong choice for users moving beyond small portable refractors and into a more serious imaging platform with a large corrected field and premium mechanical construction.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e151mm aperture provides strong light-gathering performance for deep-sky imaging.\u003c\/li\u003e\n  \u003cli\u003e1057mm focal length offers useful image scale for galaxies, nebula structure, clusters, and smaller targets.\u003c\/li\u003e\n  \u003cli\u003eNative f\/7 focal ratio balances optical correction, contrast, and long-focal-length performance.\u003c\/li\u003e\n  \u003cli\u003eQuadruplet air-spaced APO design includes two ED glass elements for excellent colour correction.\u003c\/li\u003e\n  \u003cli\u003eSelf-flattening design reduces the need for a separate field flattener in native imaging mode.\u003c\/li\u003e\n  \u003cli\u003e60mm image circle supports large imaging sensors, including full-frame and larger-format camera setups.\u003c\/li\u003e\n  \u003cli\u003e3.4-inch rack-and-pinion focuser includes M68, M54, and M48 adapter support, a 360-degree rotator, and a finder base.\u003c\/li\u003e\n  \u003cli\u003eOptional 3-inch 0.7x reducer can bring the system to approximately 740mm at f\/4.9 for faster imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-resolution deep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eGalaxy and nebula detail imaging\u003c\/li\u003e\n  \u003cli\u003eFull-frame and larger-format astronomy camera setups\u003c\/li\u003e\n  \u003cli\u003ePermanent or semi-permanent observatory systems\u003c\/li\u003e\n  \u003cli\u003ePremium refractor-based visual observing\u003c\/li\u003e\n  \u003cli\u003eLonger focal length imaging where a small wide-field refractor is not enough\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThe 151PHQ includes a 3.4-inch rack-and-pinion focuser with a 360-degree rotator, finder base, and rear adapter support for M68, M54, and M48 camera connections. The four-piece photographic adapter set steps the rear connection down to M48×0.75 and includes a built-in M48×0.75 filter thread. The optical system supports a 60mm image circle and is well suited to large sensors when paired with appropriate camera adapters.\u003c\/p\u003e\n\u003cp\u003eThe standard package includes the 151PHQ OTA, a pair of tube rings, a handle, an Askar 300mm Losmandy dovetail plate, a set of four photographic adapters, an aluminum case, and a manual. The optional 3-inch 0.7x flatfield reducer is not included, but can be used to reduce the system to approximately 740mm focal length at f\/4.9.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThis is a large refractor; the OTA weighs approximately 11.6kg, and the total weight with tube rings and dovetail is approximately 13.7kg.\u003c\/li\u003e\n  \u003cli\u003eA capable equatorial mount is required. This telescope is not appropriate for light travel mounts or entry-level mounts.\u003c\/li\u003e\n  \u003cli\u003eNative f\/7 imaging is excellent for image scale and correction, but exposure times will be longer than with faster astrographs unless the optional reducer is used.\u003c\/li\u003e\n  \u003cli\u003eThe 3-inch 0.7x reducer is optional and sold separately unless specifically bundled.\u003c\/li\u003e\n  \u003cli\u003eAlthough the native optical design is self-flattening, users still need the correct mechanical adapters, secure camera connection, and accurate focus for best results.\u003c\/li\u003e\n  \u003cli\u003eThis is not the best first telescope for a beginner unless they already have a suitable mount and imaging experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the Askar 151PHQ good for beginners?\u003c\/h3\u003e\n\u003cp\u003eIt is not usually the best first astrophotography telescope. The optics are straightforward to use because the field is corrected natively, but the telescope is large and heavy and needs a capable mount, good balancing, and careful imaging setup.\u003c\/p\u003e\n\u003ch3\u003eWhat is the Askar 151PHQ best used for?\u003c\/h3\u003e\n\u003cp\u003eIt is best used for high-quality deep-sky astrophotography with large sensors, especially when you want more focal length than a compact wide-field refractor can provide.\u003c\/p\u003e\n\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\n\u003cp\u003eIt is primarily an astrograph for imaging, but it can also be used for premium visual observing with the appropriate accessories. Astrophotography is the main reason to choose the 151PHQ.\u003c\/p\u003e\n\u003ch3\u003eDoes it require a separate field flattener?\u003c\/h3\u003e\n\u003cp\u003eNo separate flattener is required for native imaging. The PHQ optical design is self-flattening, which simplifies setup compared with refractors that require a dedicated flattener and strict flattener spacing.\u003c\/p\u003e\n\u003ch3\u003eWhat cameras is it compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe 60mm image circle makes it suitable for full-frame astronomy cameras and larger-format imaging setups, provided the correct mechanical adapters and spacing are used for the camera system.\u003c\/p\u003e\n\u003ch3\u003eCan it be made faster for imaging?\u003c\/h3\u003e\n\u003cp\u003eYes. The optional 3-inch 0.7x flatfield reducer can reduce the system to approximately 740mm focal length at f\/4.9, which shortens exposure time and provides a wider field of view.\u003c\/p\u003e\n\u003ch3\u003eWhat kind of mount does it need?\u003c\/h3\u003e\n\u003cp\u003eBecause the complete setup with tube rings and dovetail is approximately 13.7kg before adding a camera, guide scope, focuser, and accessories, it should be paired with a mount that has a comfortable imaging payload margin.\u003c\/p\u003e\n\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\n\u003cp\u003eDo not recommend this telescope for lightweight travel rigs, very small mounts, casual grab-and-go observing, or beginners who do not yet have a suitable equatorial mount and imaging workflow.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eOntario Telescope recommends the Askar 151PHQ for astrophotographers who want a premium large-aperture refractor with a long native focal length, flat imaging field, and large sensor support. It solves the problem of getting refractor-quality deep-sky images without adding a separate native field flattener. Choose a smaller PHQ or SQA model if portability, beginner friendliness, or a lighter mount requirement is more important.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following vendor-supplied graphics help show the 151PHQ optical and mechanical layout, native imaging configuration, adapter arrangement, and field performance.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/98c37934-096a-485e-9e5f-3aa0692db920.jpg\" alt=\"Askar 151PHQ optical layout and mechanical diagram for large-format astrophotography\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/307bc671-7fa9-46c6-b166-de2be86ef2b9.jpg\" alt=\"Askar 151PHQ telescope body and adapter diagram for imaging setup\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/b9152fea-5a54-4b65-beaf-6cfc05717813.jpg\" alt=\"Askar 151PHQ rear connection and accessory diagram for camera adapters\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/28082a52-4b55-4374-8169-9ff7b600ac92.jpg\" alt=\"Askar 151PHQ spot diagram and optical performance chart for deep-sky imaging\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014107656303,"sku":"151PHQ","price":6298.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/151phq__21433.png?v=1766571519"},{"product_id":"askar-130phq","title":"Askar 130PHQ","description":"\u003cp class=\"e_text-8 s_title response-transition\"\u003e130PHQ is a long-focal-ratio, flatfield astrograph newly launched after 107PHQ. Instead of buying extra flatteners, calculating the backfocus of flattener or making tedious connection to match the distance, astrophotographers can simply equip it with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging. 130PHQ has a larger size than 107PHQ, with an aperture 23mm larger than 107PHQ. 130PHQ has a focal ratio of f\/7.7 which is longer than 107PHQ’ s f\/7, and a focal length of 1000mm. The quadruplet lens with two ED glasses offers excellent control of chromatic and other aberrations. With its self-flattening design, 130PHQ offers strong advantages in astronomical shooting. It supports a medium frame 60mm image circle, has a fine spot diagram with tiny distortion of the peripheral stars, and its central RMS radius is less than 2 microns.\u003c\/p\u003e\n\u003cdiv id=\"saf-detail-0\" class=\"cbox-15 p_loopItem\"\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix response-transition\"\u003e\n\u003cdiv id=\"ce_detail-275107\" class=\"ce_detail\" data-layout=\"flow\"\u003e\n\u003cdiv id=\"ie_grid-1667527470979\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv id=\"content_ie-1667527470979-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\"\u003e\n\u003cdiv id=\"ie_grid-1667527470984\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1667527470984-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_text-1669603692344\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003e130PHQ comes with a telescopic lens hood, a high quality CNC machined and painted tube and attractive decorative parts. The 3.4\" rigid focuser comes with M68, M54, and M48 adapters and a finder base. When used with the 3\" 0.7 x flat field reducer, the telescope can reach a focal ratio of f\/5.4 and a focal length of 700mm, effectively reducing exposure time. The multifunctional handle comes with a central slot for attaching an M6 screw with an M6 screw hole. Standard Losmandy dovetail plate, together with sturdy double tube ring, is perfectly suited for viewing and shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1669603845703\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/93f71e7e-3059-44f2-b166-12284032d9b9.jpg\" alt=\"长友气体\" width=\"100%\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/142b5de7-81b4-4e96-bfdb-f3cdead5f762.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-1\" class=\"cbox-15 p_loopItem\"\u003e \u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014112407663,"sku":"130PHQ","price":5074.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/PHQ130-a__97306.png?v=1766571673"},{"product_id":"6-rowe-ackermann-schmidt-astrograph-rasa-6-optical-tube-assembly-cg-5-dovetail","title":"6” Rowe-Ackermann Schmidt Astrograph (RASA 6) Optical Tube Assembly (CG-5 Dovetail)","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightning-Fast Imaging:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRASA’s legendary ultra-fast f\/2.2 optics let you capture deep-sky images with briefer sub-exposures and less total exposure time —often eliminating the need for autoguiding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMobile But Mighty:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWeighing just 8.4 lb and featuring a versatile CG-5 dovetail, the RASA 6 is ready to image wherever you are.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSub-Arcsecond Potential:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith advanced optics capable of sub-arcsecond resolution, RASA 6 perfectly pairs with a high-resolution camera and favorable sky conditions to reveal fine structures in galaxies and nebulae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpansive Field of View:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned for sensors up to 22mm diagonal, RASA 6 offers a generous 3.8° view that effortlessly frames wide celestial targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximized Light Throughput:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCelestron’s proprietary XLT coatings ensure every image bursts with brightness and contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvenience \u0026amp; Customization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith built-in features like a filter drawer and cooling fan—and optional upgrades—RASA 6 adapts to your evolving astroimaging needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMeet the Rowe-Ackermann Schmidt Astrograph (RASA) 6—a compact powerhouse that delivers spectacular astroimages, anywhere. Engineered with ultra-fast f\/2.2 optics, the smallest member of the RASA family proves that you don’t have to sacrifice performance for portability. Whether you’re chasing dark skies in remote locations or elevating your backyard setup, RASA 6 opens the door to new possibilities.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRASA Performance for Everyone\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFor astrophotographers who demand speed, precision, and convenience in a compact package, the 6” RASA is the ultimate tool. Its f\/2.2 design dramatically shortens exposure times, making it easier to capture crisp, detailed images of faint deep-sky objects without the heavy burden of extended tracking.\u003c\/p\u003e\n\u003cp\u003eSince RASA technology debuted in 2014, it has become the trusted choice for space surveillance and satellite tracking, relied upon by defense contractors, professional researchers, and governments alike. Like its bigger brothers, RASA 6 features a flat field for sharp stars from edge to edge. With RASA 6, you get the same technology trusted by the pros,\u003cspan\u003e \u003c\/span\u003e\u003cspan data-teams=\"true\"\u003ebut at a price that’s within reach for most, including those looking to add a second grab-and-go astrograph to their arsenal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eRASA 6 defies the limitations of smaller and slower instruments. It collects more light and provides higher resolution than the refractors in its price range, allowing you to capture faint details in galaxies, nebulae, and star clusters in less time.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eShorter Exposures for a “Near-Real Time” Experience\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe magic of RASA 6 is in its speed. Its blazing f\/2.2 optics mean that even faint objects can be imaged in short exposures. When paired with sensitive cameras and live-stacking software on your laptop, you can create an almost real-time imaging experience. Bright, detailed images appear on your laptop screen in just a few short exposures.\u003c\/p\u003e\n\u003cp\u003eThe system’s ultra-fast focal ratio also eases the tracking demands on your mount. Since it allows using much shorter sub-exposures, you won’t need to use an autoguider in many instances, so you’ll spend less time dealing with equipment and more time exploring the universe.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRASA Optical Design: Engineering Excellence\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe patented Rowe-Ackermann Schmidt optical design sets RASA 6 apart from other systems. This design features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA Schmidt corrector and a high-precision primary mirror that work in tandem to minimize optical aberrations.\u003c\/li\u003e\n\u003cli\u003eA specialized three-element lens group using rare-earth glass, which ensures that more of the light emitted from celestial objects is sharply focused onto your sensor.\u003c\/li\u003e\n\u003cli\u003eA removable 2” clear filter – engineered to maintain peak F\/2.2 performance when you add a filter, as no extra glass is added into the light path.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca title=\"StarBright XLT Optical Coating\" href=\"https:\/\/www.celestron.com\/pages\/starbright-xlt-optical-coatings\"\u003eStarBright XLT coating\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003esystem for all refractive and reflective surfaces, guaranteeing maximum light transmission and superior field illumination.\u003c\/li\u003e\n\u003cli\u003eThe RASA optical design provides better overall performance and field illumination than a Schmidt-Cassegrain in the Fastar-style configuration.\u003c\/li\u003e\n\u003cli\u003eCan be used with sensors up to 22mm diagonal to provide a wide 3.8° while delivering sub-arcsecond resolution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAdvanced Features \u0026amp; Versatility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDesigned with the modern astroimager in mind, RASA 6 is loaded with features that enhance usability and adaptability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt-in Filter System\u003c\/strong\u003e\u003cbr\u003eThe integrated filter drawer accepts both 1.25” and 2” filters, giving you the flexibility to use various imaging filters. The removable 2” clear filter (i.e. optical window) allows you to add optional filters if desired, without introducing additional glass into the optical path that could compromise performance at f\/2.2.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Cooling System\u003c\/strong\u003e\u003cbr\u003eA 12V MagLev fan pulls air through mesh vents to rapidly cool the system to the ambient temperature to provide best images while keeping internal components dust-free.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eM42 Camera adapter\u003c\/strong\u003e\u003cbr\u003eThe included camera adapter for the RASA 6 features standard M42 threads, making it easy to mount a wide variety of astronomical CMOS cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnhance your setup\u003c\/strong\u003e\u003cbr\u003eTo achieve the highest level of performance, we strongly recommend pairing this telescope with the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/focus-motor\"\u003eFocus Motor\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/aluminum-dew-shield-with-cover-cap-6\"\u003e6” Aluminum Dew Shield\u003c\/a\u003e\u003c\/span\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/dew-heater-ring-6in\"\u003e6” Dew Ring\u003c\/a\u003e\u003c\/span\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/padded-telescope-bag-for-6-rasa-optical-tube\"\u003e6” RASA bag\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e(all sold separately). The Focus Motor allows you to achieve sharp, precise focus electronically from the same computer used to control your camera. For dew prevention during long imaging sessions, the dew shield or dew ring will help keep your optics clear, especially in humid conditions. When your telescope is not in use, store your RASA in this protected, portable, grab-and-go case.\u003c\/p\u003e\n\u003ch2\u003e\n\u003cbr\u003e\u003cstrong\u003eA Universe of Possibilities in a Compact Package\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe 6” RASA offers the perfect blend of speed, precision, and portability. Its game-changing optical design and robust mechanical features empower you to capture the night sky like never before. Embrace a grab-and-go astrograph that opens up a big, boundless universe.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44014116733039,"sku":"91071","price":2361.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/91071_6in_Rowe-Ackermann_Schmidt_Astrograph_01_c87fb001-e01d-42bd-baf7-ce51d98a67c5__88610.jpg?v=1766571869"},{"product_id":"advanced-vx-6-rowe-ackermann-schmidt-astrograph-rasa-telescope","title":"Advanced VX 6\" Rowe-Ackermann Schmidt Astrograph (RASA) Telescope","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightning-Fast Imaging:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRASA’s legendary ultra-fast f\/2.2 optics let you capture deep-sky images with briefer sub-exposures and less total exposure time —often eliminating the need for autoguiding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMobile But Mighty:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWeighing just 8.4 lb and featuring a versatile CG-5 dovetail, the RASA 6 is ready to image wherever you are.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSub-Arcsecond Potential:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith advanced optics capable of sub-arcsecond resolution, RASA 6 perfectly pairs with a high-resolution camera and favorable sky conditions to reveal fine structures in galaxies and nebulae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpansive Field of View:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned for sensors up to 22mm diagonal, RASA 6 offers a generous 3.8° view that effortlessly frames wide celestial targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximized Light Throughput:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCelestron’s proprietary XLT coatings ensure every image bursts with brightness and contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvenience \u0026amp; Customization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith built-in features like a filter drawer and cooling fan—and optional upgrades—RASA 6 adapts to your evolving astroimaging needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced VX Mount:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe perfect platform for RASA 6, this capable and portable German equatorial mount delivers rock-solid stability, precise tracking, and robust support for payloads up to 30 lb.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eMeet the Rowe-Ackermann Schmidt Astrograph (RASA) 6—a compact powerhouse that delivers spectacular astroimages, anywhere. Engineered with ultra-fast f\/2.2 optics, the smallest member of the RASA family proves that you don’t have to sacrifice performance for portability. Whether you’re chasing dark skies in remote locations or elevating your backyard setup, RASA 6 opens the door to new possibilities.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRASA Performance for Everyone\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFor astrophotographers who demand speed, precision, and convenience in a compact package, the 6” RASA is the ultimate tool. Its f\/2.2 design dramatically shortens exposure times, making it easier to capture crisp, detailed images of faint deep-sky objects without the heavy burden of extended tracking.\u003c\/p\u003e\n\u003cp\u003eSince RASA technology debuted in 2014, it has become the trusted choice for space surveillance and satellite tracking, relied upon by defense contractors, professional researchers, and governments alike. Like its bigger brothers, RASA 6 features a flat field for sharp stars from edge to edge. With RASA 6, you get the same technology trusted by the pros,\u003cspan\u003e \u003c\/span\u003e\u003cspan data-teams=\"true\"\u003ebut at a price that’s within reach for most, including those looking to add a second grab-and-go astrograph to their arsenal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eRASA 6 defies the limitations of smaller and slower instruments. It collects more light and provides higher resolution than the refractors in its price range, allowing you to capture faint details in galaxies, nebulae, and star clusters in less time.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eShorter Exposures for a “Near-Real Time” Experience\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe magic of RASA 6 is in its speed. Its blazing f\/2.2 optics mean that even faint objects can be imaged in short exposures. When paired with sensitive cameras and live-stacking software on your laptop, you can create an almost real-time imaging experience. Bright, detailed images appear on your laptop screen in just a few short exposures.\u003c\/p\u003e\n\u003cp\u003eThe system’s ultra-fast focal ratio also eases the tracking demands on your mount. Since it allows using much shorter sub-exposures, you won’t need to use an autoguider in many instances, so you’ll spend less time dealing with equipment and more time exploring the universe.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRASA Optical Design: Engineering Excellence\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe patented Rowe-Ackermann Schmidt optical design sets RASA 6 apart from other systems. This design features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA Schmidt corrector and a high-precision primary mirror that work in tandem to minimize optical aberrations.\u003c\/li\u003e\n\u003cli\u003eA specialized three-element lens group using rare-earth glass, which ensures that more of the light emitted from celestial objects is sharply focused onto your sensor.\u003c\/li\u003e\n\u003cli\u003eA removable 2” clear filter – engineered to maintain peak f\/2.2 performance when you add a filter, as no extra glass is added into the light path.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca title=\"StarBright XLT Optical Coating\" href=\"https:\/\/www.celestron.com\/pages\/starbright-xlt-optical-coatings\"\u003eStarBright XLT coating\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003esystem for all refractive and reflective surfaces, guaranteeing maximum light transmission and superior field illumination.\u003c\/li\u003e\n\u003cli\u003eThe RASA optical design provides better overall performance and field illumination than a Schmidt-Cassegrain in the Fastar-style configuration.\u003c\/li\u003e\n\u003cli\u003eCan be used with sensors up to 22mm diagonal to provide a wide 3.8° while delivering sub-arcsecond resolution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAdvanced Features \u0026amp; Versatility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDesigned with the modern astroimager in mind, RASA 6 is loaded with features that enhance usability and adaptability:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt-in Filter System\u003c\/strong\u003e\u003cbr\u003eThe integrated filter drawer accepts both 1.25” and 2” filters, giving you the flexibility to use various imaging filters. The removable 2” clear filter (i.e. optical window) allows you to add optional filters if desired, without introducing additional glass into the optical path that could compromise performance at f\/2.2.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Cooling System\u003c\/strong\u003e\u003cbr\u003eA 12V MagLev fan pulls air through mesh vents to rapidly cool the system to the ambient temperature to provide best images while keeping internal components dust-free.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eM42 Camera adapter\u003c\/strong\u003e\u003cbr\u003eThe included camera adapter for the RASA 6 features standard M42 threads, making it easy to mount a wide variety of astronomical CMOS cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnhance your setup\u003c\/strong\u003e\u003cbr\u003eTo achieve the highest level of performance, we strongly recommend pairing this telescope with the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/focus-motor\"\u003eFocus Motor\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/aluminum-dew-shield-with-cover-cap-6\"\u003e6” Aluminum Dew Shield\u003c\/a\u003e\u003c\/span\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/dew-heater-ring-6in\"\u003e6” Dew Ring\u003c\/a\u003e\u003c\/span\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/padded-telescope-bag-for-6-rasa-optical-tube\"\u003e6” RASA bag\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e(all sold separately). The Focus Motor allows you to achieve sharp, precise focus electronically from the same computer used to control your camera. For dew prevention during long imaging sessions, the dew shield or dew ring will help keep your optics clear, especially in humid conditions. When your telescope is not in use, store your RASA in this protected, portable, grab-and-go case.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAdvanced VX Mount \u0026amp; Intelligent Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe RASA 6 is perfectly paired with the Advanced VX mount, Celestron’s smallest and most versatile GoTo German equatorial mount. This mount is engineered to deliver:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRock-Solid Stability\u003c\/strong\u003e\u003cbr\u003eWith a payload capacity of up to 30 lb, Advanced VX is a rigid, stable platform even when loaded with additional accessories like StarSense Autoguider (for long sub-exposures), dew prevention, or a focus motor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInnovative Control Features\u003c\/strong\u003e\u003cbr\u003eEquipped with All-Star Polar Alignment and permanently programmable periodic error correction (PPEC), the Advanced VX mount makes aligning and tracking effortless.\u003c\/p\u003e\n\u003cp\u003eIts computerized GoTo capability, accessible via the NexStar+ hand control, lets you quickly locate and track celestial objects with intuitive menu-driven operations—ideal both beginners and experienced astronomers alike.\u003c\/p\u003e\n\u003cp\u003eTogether, the RASA 6 and Advanced VX form a synergistic system capable of delivering high-quality images in a truly portable design.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCPWI Software Integration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eEvery advanced imaging system needs equally advanced software, and this kit comes with Celestron PWI Telescope Control Software—a comprehensive software solution co-developed with PlaneWave Instruments. With CPWI, you gain:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA graphical planetarium interface featuring PointXP advanced mount modeling, allowing you to add over 100 alignment points for pinpoint accuracy.\u003c\/li\u003e\n\u003cli\u003eSeamless integration with ASCOM, providing control of your Advanced VX mount from a wide range of third-party applications.\u003c\/li\u003e\n\u003cli\u003eFeatures perfect for observatory setups, such as saving and reloading your alignment and automatically parking your scope.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eA Universe of Possibilities in a Compact Package\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe Advanced VX 6” RASA offers the perfect blend of speed, precision, and portability. Its game-changing optical design and robust mechanical features empower you to capture the night sky like never before. Embrace a grab-and-go astrograph that opens up a big, boundless universe.\u003c\/span\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44014117355631,"sku":"12036","price":3334.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/12026_Advanced_VX_6in_Rowe-Ackermann_Schmidt_Astrograph_01_570x3802x__26558.jpg?v=1766571896"},{"product_id":"hac125dx-minigraph","title":"HAC125DX Minigraph","description":"\u003cp\u003eThe all-new Honders Advanced Catadioptric, or HAC125DX Minigraph is the smallest, fastest astrograph you can find.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHonders Advanced Catadioptric optical design\u003c\/li\u003e\n\u003cli\u003eRadiant Aluminum Quartz (RAQ)™ mirror coatings\u003c\/li\u003e\n\u003cli\u003eWide-open 250mm focal length\u003c\/li\u003e\n\u003cli\u003eFAST f\/2 focal ratio\u003c\/li\u003e\n\u003cli\u003e5-inch aperture diameter\u003c\/li\u003e\n\u003cli\u003eLightweight 8.4 pounds\u003c\/li\u003e\n\u003cli\u003e16mm image circle\u003c\/li\u003e\n\u003cli\u003eCollimatable primary mirror cell\u003c\/li\u003e\n\u003cli\u003eRear primary mirror heliacal focuser\u003c\/li\u003e\n\u003cli\u003eClamshell rings with a V-style dovetail\u003c\/li\u003e\n\u003cli\u003eDual finderscope brackets\u003c\/li\u003e\n\u003cli\u003e1.25-inch barrel\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: 1.25-inch adapter, M42x0.75\u003cbr\u003eadapter, dew shield\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Honders Advanced Catadoptric optical design maximizes its glass with hybrid refractive and reflective surfaces to deliver the sharpest, fastest, lightest catadioptric mini astrograph (minigraph) available.\u003c\/p\u003e\n\u003cp\u003eThe Sky-Watcher Honders Advanced Catadioptric (HAC) telescope is a sophisticated, high-speed astrograph designed for fast, wide-field imaging in a compact package. Unlike other small refractor astrographs, the HAC125DX features a lightning-fast f\/2 focal ratio allowing you to capture images 5x faster than a standard f\/4.9 optic. With this kind of speed that means more data in less time and no need to autoguide!\u003c\/p\u003e\n\u003cp\u003eCompared to the original HAC125 the HAC125DX features a rear focusing mechanism on the primary. This allows for a wider range of cameras to be used compared to the original model and makes focusing easier when the telescope is in use. The telescope features a 16mm image circle which is ideal for IMX533 and 585 cameras. While small, at only 15.7-inches long the HAC125DX offers a powerful imaging platform for both beginners and advanced imagers.\u003c\/p\u003e\n\u003cp\u003eThe HAC125DX is the ultimate grab-and-go astrograph. Fast optics and small size make it easier to get out and enjoy the hobby you love. Attach it to your favorite portable mount and you are ready to capture the universe in virtually no time at all! The HAC125DX is not just another astrograph, it’s a Minigraph that is ready for all your astronomy adventures.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe field of view with an IMX533 and IMX585 camera sensor.   Consider a non-cooled model and take very short exposures.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/astronomy-tools-fov_9c1af1ae-4789-48bb-b882-3625c9eb6aee.png?v=1766571922\" alt=\"\" width=\"760\" height=\"760\"\u003e\u003c\/p\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44014118207599,"sku":"S11250","price":1380.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/S11250_HAC125DX_OTA_Tableau_1800x1800__13558.jpg?v=1766571924"},{"product_id":"71f-flat-field","title":"Askar 71F 71mm f\/6.9 Flat-Field APO Astrograph","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eAskar 71F Flat-Field APO Astrograph\u003c\/strong\u003e is a lightweight, compact 71mm quadruplet refractor designed for both astrophotography and visual observing. With a 490mm focal length and native f\/6.9 focal ratio, it offers a practical balance of portability, reach, and corrected imaging performance.\u003c\/p\u003e\u003cp\u003eThe 71F uses a quadruplet air-spaced APO optical design with one ED glass element. Its self-flattened design supports a 44mm full-frame image circle, allowing imagers to use the telescope without purchasing a separate field flattener or calculating traditional backfocus spacing before imaging.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWho Is This Product Best For?\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThis telescope is best for astrophotographers who want a portable, corrected refractor for wide-field deep-sky imaging, as well as visual observers who want a compact APO refractor that can also serve as an imaging OTA.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWhy Choose This Product?\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-flattened optical design:\u003c\/strong\u003e The 71F does not require a separate field flattener for standard imaging use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-frame ready:\u003c\/strong\u003e The 44mm image circle supports full-frame imaging sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuadruplet APO optics:\u003c\/strong\u003e The air-spaced quadruplet design includes one ED glass element to help control chromatic aberration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable build:\u003c\/strong\u003e The OTA weighs only 2.5kg, with a 3.0kg gross weight including the tube rings and dovetail plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging-friendly mechanics:\u003c\/strong\u003e Includes a 2.4\" dual-speed rack-and-pinion focuser, 1:10 fine adjustment, and a 360° rear rotator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible connection options:\u003c\/strong\u003e The photographic adapter system includes M48×0.75 and M54×0.75 connections with a built-in 2\" filter thread.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eFull-frame imaging setups\u003c\/li\u003e\n\u003cli\u003ePortable refractor imaging rigs\u003c\/li\u003e\n\u003cli\u003eVisual observing with compatible eyepieces and accessories\u003c\/li\u003e\n\u003cli\u003eTravel-friendly astronomy setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe Askar 71F includes a set of photographic adapters, a pair of tube rings, a handle, and a 230mm Vixen-style dovetail plate. The dovetail plate includes slotted 1\/4\" and 3\/8\" screw holes for direct tripod attachment. The focuser provides M64×0.75, M54×0.75, and M48×0.75 rear-end connection options depending on the adapter configuration.\u003c\/p\u003e\u003cp\u003eThe telescope also includes multiple finder mounting options, with a finder slot on the handle and two finder bases on the focuser body. Sharpstar\/Askar also shows optional EAF installation support on the product page.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eTechnical Diagrams\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe following Sharpstar\/Askar technical diagrams are included for setup planning, mechanical spacing, accessory connection, and imaging performance reference.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/8fea8184-f19b-4167-8000-5f6b82ffbc68.jpg\" alt=\"Askar 71F product size diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003e71F Connection Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c4e96a62-154d-46ae-9c4c-c056597265dc.jpg\" alt=\"Askar 71F connection diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eLocking Screw Position Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/fb7489d3-de4a-4c26-bcae-55a86166d738.jpg\" alt=\"Askar 71F locking screw position diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eEAF Installation Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6a4a88e7-e8b7-494c-b196-f987f67b375a.jpg\" alt=\"Askar 71F optional EAF installation diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/bbb48223-3f1a-4483-a38f-d799c720a9e6.jpg\" alt=\"Askar 71F EAF installation detail diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Path Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/41058961-83a2-4a2d-a246-9f289d69c42b.jpg\" alt=\"Askar 71F optical path diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eSpot Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a91f2077-d8ca-4b0c-a2e2-fb08ce115b2b.jpg\" alt=\"Askar 71F spot diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a fast reducer setup by default:\u003c\/strong\u003e The native focal ratio is f\/6.9. A reducer, if desired, is a separate accessory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging train planning still matters:\u003c\/strong\u003e The telescope is self-flattened, but users still need the correct mechanical adapters, camera spacing within the available focuser travel, and sufficient focus travel for their setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount capacity matters:\u003c\/strong\u003e The OTA is compact, but total system weight increases with camera, guide scope, filter wheel, focuser motor, and other accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h2\u003e\u003ch3\u003e\u003cstrong\u003eDoes the Askar 71F need a separate field flattener?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eNo. The 71F is designed as a self-flattened astrograph, so a separate flattener is not required for standard imaging use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCan the Askar 71F cover a full-frame camera?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes. Sharpstar\/Askar lists a 44mm image circle, which is suitable for full-frame imaging.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is the focal length?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe native focal length is 490mm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat focuser does it use?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 71F uses a 2.4\" dual-speed rack-and-pinion focuser with 1:10 fine adjustment and a 360° rear rotator.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is included in the standard package?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe listed standard package includes the 71F OTA, tube rings, handle, 230mm Vixen dovetail plate, and photographic adapters.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eOur Recommendation\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Askar 71F for imagers who want a compact, full-frame-capable refractor with built-in field correction and no separate flattener requirement. It is a strong choice for portable deep-sky imaging setups where simplicity, corrected optics, and manageable weight are priorities.\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014120206447,"sku":"71F","price":939.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/71Fa__59523.png?v=1766572032"},{"product_id":"just-add-camera-imaging-system-4","title":"Just Add Camera Imaging System 4","description":"\u003ch2 data-start=\"153\" data-end=\"222\"\u003e\u003cstrong data-start=\"156\" data-end=\"222\"\u003eZWO AM3N Mount + Starfield Gear60Q Astrograph Combo\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"224\" data-end=\"278\"\u003e\u003cstrong data-start=\"228\" data-end=\"278\"\u003eAstrophotography Anywhere—Compact and Powerful\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"280\" data-end=\"562\"\u003eCombine the portable tracking capability of the Skywatcher AL-EQ55i mount with the exceptional optics of the Starfield Gear60Q Astrograph (60mm aperture, 300mm focal length, f\/5 optics). Its quadruplet lens design ensures sharp, color-corrected images without additional correctors.\u003c\/p\u003e\n\u003ch3 data-start=\"564\" data-end=\"597\"\u003e\u003cstrong data-start=\"568\" data-end=\"597\"\u003eWide, Ideal Field of View\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"598\" data-end=\"734\"\u003e\n\u003cli data-start=\"598\" data-end=\"666\"\u003e\n\u003cstrong data-start=\"600\" data-end=\"634\"\u003eAPS-C DSLR (~23.5mm × 15.6mm):\u003c\/strong\u003e Approximately \u003cstrong data-start=\"649\" data-end=\"664\"\u003e3.9° × 2.6°\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"667\" data-end=\"734\"\u003e\n\u003cstrong data-start=\"669\" data-end=\"704\"\u003eASI533MC-Pro (11.3mm × 11.3mm):\u003c\/strong\u003e Approximately \u003cstrong data-start=\"719\" data-end=\"734\"\u003e2.1° × 2.1°\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"736\" data-end=\"779\"\u003e\u003cstrong data-start=\"740\" data-end=\"779\"\u003ePerfect Targets Throughout the Year\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"780\" data-end=\"1010\"\u003e\n\u003cli data-start=\"780\" data-end=\"814\"\u003e\n\u003cstrong data-start=\"782\" data-end=\"793\"\u003eSpring:\u003c\/strong\u003e Virgo Galaxy Cluster\u003c\/li\u003e\n\u003cli data-start=\"815\" data-end=\"898\"\u003e\n\u003cstrong data-start=\"817\" data-end=\"828\"\u003eSummer:\u003c\/strong\u003e North America Nebula (NGC 7000) and Pelican Nebula (IC 5070) together\u003c\/li\u003e\n\u003cli data-start=\"899\" data-end=\"933\"\u003e\n\u003cstrong data-start=\"901\" data-end=\"910\"\u003eFall:\u003c\/strong\u003e Heart and Soul Nebulae\u003c\/li\u003e\n\u003cli data-start=\"934\" data-end=\"1010\"\u003e\n\u003cstrong data-start=\"936\" data-end=\"947\"\u003eWinter:\u003c\/strong\u003e Pleiades (M45) star cluster and surrounding reflection nebulae\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1012\" data-end=\"1040\"\u003e\u003cstrong data-start=\"1016\" data-end=\"1040\"\u003eTechnical Highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1041\" data-end=\"1342\"\u003e\n\u003cli data-start=\"1041\" data-end=\"1124\"\u003e\n\u003cstrong data-start=\"1043\" data-end=\"1053\"\u003eMount:\u003c\/strong\u003e AL-EQ55i offers accurate tracking in a portable, user-friendly design.\u003c\/li\u003e\n\u003cli data-start=\"1125\" data-end=\"1246\"\u003e\n\u003cstrong data-start=\"1127\" data-end=\"1141\"\u003eTelescope:\u003c\/strong\u003e Starfield Gear60Q Astrograph with integrated field flattener, ensuring pinpoint stars to the image edge.\u003c\/li\u003e\n\u003cli data-start=\"1247\" data-end=\"1342\"\u003e\n\u003cstrong data-start=\"1249\" data-end=\"1282\"\u003eFast Quadruplet Optics (f\/5):\u003c\/strong\u003e Exceptional imaging capability with reduced exposure times.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1755\" data-end=\"1830\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eAchieve professional results with maximum portability, ease, and precision.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is included in the package:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eAM3N Mount\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStarfield Gear60 Quad f\/5 astrograph\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStarfield 32mm Guide package with ASI120MM-Mini\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eZWO TC40 Carbon Fiber Tripod\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003e*\u003ca href=\"%%GLOBAL_ShopPathSSL%%\/eq-al-55i-pier-extension\/\"\u003ePier extension\u003c\/a\u003e, \u003ca title=\"DSLR Camera mount\" href=\"%%GLOBAL_ShopPathSSL%%\/t-rings\/\"\u003eDSLR Camera mount\u003c\/a\u003e, \u003ca title=\"Hand Controller sold separately\" href=\"%%GLOBAL_ShopPathSSL%%\/skywatcher-v5-hand-controller-synscan\/\"\u003eHand Controller sold separately\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMeet the \u003cstrong data-start=\"9\" data-end=\"47\"\u003eZWO AM3N Harmonic Equatorial Mount\u003c\/strong\u003e—a compact 4.1 kg strain-wave drive mount engineered for precision astrophotography, supplied with a periodic-error curve and a smooth 300:1 reduction for accurate long-exposure tracking.\u003c\/p\u003e\n\u003cp\u003e\u003cbr data-start=\"272\" data-end=\"275\"\u003eDespite its travel-friendly size, \u003cstrong data-start=\"309\" data-end=\"317\"\u003eAM3N\u003c\/strong\u003e supports \u003cstrong data-start=\"327\" data-end=\"335\"\u003e8 kg\u003c\/strong\u003e without counterweights and up to \u003cstrong data-start=\"369\" data-end=\"378\"\u003e13 kg\u003c\/strong\u003e with, and it switches between \u003cstrong data-start=\"409\" data-end=\"423\"\u003eequatorial\u003c\/strong\u003e and \u003cstrong data-start=\"428\" data-end=\"438\"\u003ealt-az\u003c\/strong\u003e modes to cover observing from \u003cstrong data-start=\"469\" data-end=\"479\"\u003e0°–90°\u003c\/strong\u003e latitude. \u003c\/p\u003e\n\u003cp\u003e\u003cbr data-start=\"527\" data-end=\"530\"\u003eThoughtful upgrades—\u003cstrong data-start=\"550\" data-end=\"585\"\u003eintegrated Type-C and 12V ports\u003c\/strong\u003e in the saddle, \u003cstrong data-start=\"601\" data-end=\"628\"\u003eBluetooth phone control\u003c\/strong\u003e with \u003cstrong data-start=\"634\" data-end=\"655\"\u003eASIAIR\/ASCOM\/INDI\u003c\/strong\u003e compatibility, and cleaner two-cable management—deliver a faster, tidier setup that gets you imaging sooner\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Starfield Gear60 f\/5 Quad astrograph\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe Starfield 60mm quadruplet f\/5 Petzvel APO will take your wide field imaging game to new levels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe development of the GÉAR60Q telescope placed a great emphasis on achieving very high standards in terms of its optical and mechanical quality. It features a built-in corrective element within the focusing tube, which is positioned at an optimized distance from the main objective. This design is specifically optimized for astrophotography, ensuring that the camera is automatically positioned at the correct distance for optimal sharpness across the entire field.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe telescope boasts 2-element lens with FPL53 as the APO element, resulting in exceptional color correction. Even bright stars are clearly visible without any color fringing. The 2-element corrector, built into the focus tube, ensures consistent sharpness across the entire field. Additionally, this apo is compatible with cameras featuring full-frame sensor with its 44mm image circle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThis 300mm Quad has the features that should be standard on all astrographs. A 2.5\" focuser with a camera angel adjuster, also known as a manual rotator, also boasts a tilt adjustment plate. Integrated handle for accessories and a long dovetail plate round out the package.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eMulticoated optics are standard and each Gear series telescope comes with a soft case with die cut foam. The case has been designed to accommodate the optional focusing motor, or a Pegasus Astro or ZWO focusing motor, and a spot for your imaging camera.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe Optional focusing motor can easily be disengaged to allow for manual focusing with a simple twist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003eThe Petzval design means that finding the perfect spacing is a thing of the past. Just focus your camera and take your images. The working distance is 41-61mm from the 48mm thread, and a 44mm image circle will illuminate a standard 36x24mm sensor.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe 2.5\" Rack and Pinion focuser boasts an exceptional standard of performance. The drawtube is securely supported by ball bearings, ensuring a smooth and stable operation. Providing exceptional accuracy and allows for the use of heavy cameras and accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe focuser also offers a variety of convenient and useful features, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA camera angle adjuster or Rotator with allows for 360° rotation\u003c\/li\u003e\n\u003cli\u003eA precise tilter mechanism, which allows for adjustment to match the telescope to the camera for optimal performance.\u003c\/li\u003e\n\u003cli\u003eA 1:10 gear reduction for precise focusing\u003c\/li\u003e\n\u003cli\u003eThe capability to connect a motor focus.\u003c\/li\u003e\n\u003cli\u003eAn integrated filter holder for 2\" filters which is placed in front of the camera.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eIntegrated handle for accessories and a long dovetail plate round out the package, and a softsided case with room for accessories\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003ch3 data-start=\"1215\" data-end=\"1265\"\u003e\u003cstrong data-start=\"1219\" data-end=\"1265\"\u003eEnhance Your Setup with the ZWO ASIAIR Pro\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1266\" data-end=\"1681\"\u003eTo elevate this astrophotography kit even further, consider adding the ZWO ASIAIR Pro. This innovative device streamlines your imaging sessions by offering effortless camera control, precise auto-guiding, plate-solving, and live stacking—all via an intuitive smartphone or tablet interface. The ASIAIR Pro complements this portable setup perfectly, making astrophotography more enjoyable and efficient in the field.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Ontario Telescope and Accessories","offers":[{"title":"Default Title","offer_id":44014140194927,"sku":"AM3N-G60","price":4349.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/JustAddCamera4__99367.png?v=1766572734"},{"product_id":"just-add-camera-imaging-system-4-no-tripod","title":"Just Add Camera Imaging System 4 no tripod","description":"\u003ch2 data-start=\"153\" data-end=\"222\"\u003e\u003cstrong data-start=\"156\" data-end=\"222\"\u003eZWO AM3N Mount + Starfield Gear60Q Astrograph Combo\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"224\" data-end=\"278\"\u003e\u003cstrong data-start=\"228\" data-end=\"278\"\u003eAstrophotography Anywhere—Compact and Powerful\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"280\" data-end=\"562\"\u003eCombine the portable tracking capability of the Skywatcher AL-EQ55i mount with the exceptional optics of the Starfield Gear60Q Astrograph (60mm aperture, 300mm focal length, f\/5 optics). Its quadruplet lens design ensures sharp, color-corrected images without additional correctors.\u003c\/p\u003e\n\u003ch3 data-start=\"564\" data-end=\"597\"\u003e\u003cstrong data-start=\"568\" data-end=\"597\"\u003eWide, Ideal Field of View\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"598\" data-end=\"734\"\u003e\n\u003cli data-start=\"598\" data-end=\"666\"\u003e\n\u003cstrong data-start=\"600\" data-end=\"634\"\u003eAPS-C DSLR (~23.5mm × 15.6mm):\u003c\/strong\u003e Approximately \u003cstrong data-start=\"649\" data-end=\"664\"\u003e3.9° × 2.6°\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"667\" data-end=\"734\"\u003e\n\u003cstrong data-start=\"669\" data-end=\"704\"\u003eASI533MC-Pro (11.3mm × 11.3mm):\u003c\/strong\u003e Approximately \u003cstrong data-start=\"719\" data-end=\"734\"\u003e2.1° × 2.1°\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"736\" data-end=\"779\"\u003e\u003cstrong data-start=\"740\" data-end=\"779\"\u003ePerfect Targets Throughout the Year\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"780\" data-end=\"1010\"\u003e\n\u003cli data-start=\"780\" data-end=\"814\"\u003e\n\u003cstrong data-start=\"782\" data-end=\"793\"\u003eSpring:\u003c\/strong\u003e Virgo Galaxy Cluster\u003c\/li\u003e\n\u003cli data-start=\"815\" data-end=\"898\"\u003e\n\u003cstrong data-start=\"817\" data-end=\"828\"\u003eSummer:\u003c\/strong\u003e North America Nebula (NGC 7000) and Pelican Nebula (IC 5070) together\u003c\/li\u003e\n\u003cli data-start=\"899\" data-end=\"933\"\u003e\n\u003cstrong data-start=\"901\" data-end=\"910\"\u003eFall:\u003c\/strong\u003e Heart and Soul Nebulae\u003c\/li\u003e\n\u003cli data-start=\"934\" data-end=\"1010\"\u003e\n\u003cstrong data-start=\"936\" data-end=\"947\"\u003eWinter:\u003c\/strong\u003e Pleiades (M45) star cluster and surrounding reflection nebulae\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1012\" data-end=\"1040\"\u003e\u003cstrong data-start=\"1016\" data-end=\"1040\"\u003eTechnical Highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1041\" data-end=\"1342\"\u003e\n\u003cli data-start=\"1041\" data-end=\"1124\"\u003e\n\u003cstrong data-start=\"1043\" data-end=\"1053\"\u003eMount:\u003c\/strong\u003e AL-EQ55i offers accurate tracking in a portable, user-friendly design.\u003c\/li\u003e\n\u003cli data-start=\"1125\" data-end=\"1246\"\u003e\n\u003cstrong data-start=\"1127\" data-end=\"1141\"\u003eTelescope:\u003c\/strong\u003e Starfield Gear60Q Astrograph with integrated field flattener, ensuring pinpoint stars to the image edge.\u003c\/li\u003e\n\u003cli data-start=\"1247\" data-end=\"1342\"\u003e\n\u003cstrong data-start=\"1249\" data-end=\"1282\"\u003eFast Quadruplet Optics (f\/5):\u003c\/strong\u003e Exceptional imaging capability with reduced exposure times.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1755\" data-end=\"1830\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eAchieve professional results with maximum portability, ease, and precision.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is included in the package:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eAM3N Mount\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStarfield Gear60 Quad f\/5 astrograph\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStarfield 32mm Guide package with ASI120MM-Mini\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003e*\u003ca href=\"%%GLOBAL_ShopPathSSL%%\/eq-al-55i-pier-extension\/\"\u003ePier extension\u003c\/a\u003e, \u003ca title=\"DSLR Camera mount\" href=\"%%GLOBAL_ShopPathSSL%%\/t-rings\/\"\u003eDSLR Camera mount\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMeet the \u003cstrong data-start=\"9\" data-end=\"47\"\u003eZWO AM3N Harmonic Equatorial Mount\u003c\/strong\u003e—a compact 4.1 kg strain-wave drive mount engineered for precision astrophotography, supplied with a periodic-error curve and a smooth 300:1 reduction for accurate long-exposure tracking.\u003c\/p\u003e\n\u003cp\u003e\u003cbr data-start=\"272\" data-end=\"275\"\u003eDespite its travel-friendly size, \u003cstrong data-start=\"309\" data-end=\"317\"\u003eAM3N\u003c\/strong\u003e supports \u003cstrong data-start=\"327\" data-end=\"335\"\u003e8 kg\u003c\/strong\u003e without counterweights and up to \u003cstrong data-start=\"369\" data-end=\"378\"\u003e13 kg\u003c\/strong\u003e with, and it switches between \u003cstrong data-start=\"409\" data-end=\"423\"\u003eequatorial\u003c\/strong\u003e and \u003cstrong data-start=\"428\" data-end=\"438\"\u003ealt-az\u003c\/strong\u003e modes to cover observing from \u003cstrong data-start=\"469\" data-end=\"479\"\u003e0°–90°\u003c\/strong\u003e latitude. \u003c\/p\u003e\n\u003cp\u003e\u003cbr data-start=\"527\" data-end=\"530\"\u003eThoughtful upgrades—\u003cstrong data-start=\"550\" data-end=\"585\"\u003eintegrated Type-C and 12V ports\u003c\/strong\u003e in the saddle, \u003cstrong data-start=\"601\" data-end=\"628\"\u003eBluetooth phone control\u003c\/strong\u003e with \u003cstrong data-start=\"634\" data-end=\"655\"\u003eASIAIR\/ASCOM\/INDI\u003c\/strong\u003e compatibility, and cleaner two-cable management—deliver a faster, tidier setup that gets you imaging sooner\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Starfield Gear60 f\/5 Quad astrograph\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe Starfield 60mm quadruplet f\/5 Petzvel APO will take your wide field imaging game to new levels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe development of the GÉAR60Q telescope placed a great emphasis on achieving very high standards in terms of its optical and mechanical quality. It features a built-in corrective element within the focusing tube, which is positioned at an optimized distance from the main objective. This design is specifically optimized for astrophotography, ensuring that the camera is automatically positioned at the correct distance for optimal sharpness across the entire field.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe telescope boasts 2-element lens with FPL53 as the APO element, resulting in exceptional color correction. Even bright stars are clearly visible without any color fringing. The 2-element corrector, built into the focus tube, ensures consistent sharpness across the entire field. Additionally, this apo is compatible with cameras featuring full-frame sensor with its 44mm image circle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThis 300mm Quad has the features that should be standard on all astrographs. A 2.5\" focuser with a camera angel adjuster, also known as a manual rotator, also boasts a tilt adjustment plate. Integrated handle for accessories and a long dovetail plate round out the package.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eMulticoated optics are standard and each Gear series telescope comes with a soft case with die cut foam. The case has been designed to accommodate the optional focusing motor, or a Pegasus Astro or ZWO focusing motor, and a spot for your imaging camera.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eThe Optional focusing motor can easily be disengaged to allow for manual focusing with a simple twist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003eThe Petzval design means that finding the perfect spacing is a thing of the past. Just focus your camera and take your images. The working distance is 41-61mm from the 48mm thread, and a 44mm image circle will illuminate a standard 36x24mm sensor.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe 2.5\" Rack and Pinion focuser boasts an exceptional standard of performance. The drawtube is securely supported by ball bearings, ensuring a smooth and stable operation. Providing exceptional accuracy and allows for the use of heavy cameras and accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe focuser also offers a variety of convenient and useful features, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA camera angle adjuster or Rotator with allows for 360° rotation\u003c\/li\u003e\n\u003cli\u003eA precise tilter mechanism, which allows for adjustment to match the telescope to the camera for optimal performance.\u003c\/li\u003e\n\u003cli\u003eA 1:10 gear reduction for precise focusing\u003c\/li\u003e\n\u003cli\u003eThe capability to connect a motor focus.\u003c\/li\u003e\n\u003cli\u003eAn integrated filter holder for 2\" filters which is placed in front of the camera.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-70 c1-71 c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eIntegrated handle for accessories and a long dovetail plate round out the package, and a softsided case with room for accessories\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003ch3 data-start=\"1215\" data-end=\"1265\"\u003e\u003cstrong data-start=\"1219\" data-end=\"1265\"\u003eEnhance Your Setup with the ZWO ASIAIR Pro\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1266\" data-end=\"1681\"\u003eTo elevate this astrophotography kit even further, consider adding the ZWO ASIAIR Pro. This innovative device streamlines your imaging sessions by offering effortless camera control, precise auto-guiding, plate-solving, and live stacking—all via an intuitive smartphone or tablet interface. The ASIAIR Pro complements this portable setup perfectly, making astrophotography more enjoyable and efficient in the field.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Ontario Telescope and Accessories","offers":[{"title":"Default Title","offer_id":44014145044591,"sku":"AM3N-G60-NT","price":3949.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/JustAddCamera4__99367.1757787752.1280.1280__46056.png?v=1766572901"},{"product_id":"william-optics-ultra-cat-131-astrograph-ai-optimized-example","title":"William Optics Ultra-Cat 131 Astrograph","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Ultra-Cat 131\u003c\/strong\u003e is a premium large-aperture astrograph designed for serious deep-sky astrophotographers who want a fast, flat-field imaging telescope for high-resolution wide-field work. It combines a 131mm aperture, 648mm focal length, fast f\/4.9 focal ratio, and advanced 5-element Petzval optical design for sharp, detailed astrophotography with large camera sensors.\u003c\/p\u003e\n\u003cp\u003eThis telescope is best suited for experienced astrophotographers using cooled astronomy cameras, full-frame cameras, APS-C cameras, Micro Four Thirds cameras, or medium-format imaging systems. It is a strong choice for imaging nebulae, galaxies, star fields, mosaics, and large deep-sky targets where edge-to-edge star quality and a large corrected image circle matter.\u003c\/p\u003e\n\u003ch2\u003eWho Is the William Optics Ultra-Cat 131 Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Ultra-Cat 131 is ideal for advanced backyard imagers, serious deep-sky astrophotographers, and observatory users who want a high-performance imaging refractor\/astrograph with a large corrected field. It is especially well suited to imagers who use full-frame or larger camera sensors and want a telescope that can support demanding astrophotography setups.\u003c\/p\u003e\n\u003cp\u003eChoose the William Optics Ultra-Cat 131 if you want a premium 131mm f\/4.9 Petzval astrograph for deep-sky imaging with full-frame or medium-format cameras. It is designed to help astrophotographers capture wide-field objects with excellent correction, strong contrast, and sharp stars across a large imaging area.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the Ultra-Cat 131?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced 5-element Petzval optical design:\u003c\/strong\u003e Produces a flat imaging field without requiring a separate field flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge 60mm image circle:\u003c\/strong\u003e Supports full-frame and medium-format camera systems for expansive astrophotography compositions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast f\/4.9 focal ratio:\u003c\/strong\u003e Helps reduce exposure time compared with slower refractors while maintaining premium image quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e131mm aperture:\u003c\/strong\u003e Provides more light-gathering performance than smaller portable astrographs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD internal focuser:\u003c\/strong\u003e William Optics Internal Focuser Design helps maintain balance and stability in demanding imaging trains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated sensor tilt correction:\u003c\/strong\u003e Helps fine-tune the imaging plane for sharper stars across the frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for serious imaging systems:\u003c\/strong\u003e A strong fit for cooled astronomy cameras, large sensors, filter wheels, and permanent or semi-permanent astrophotography setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eWide-field nebula imaging\u003c\/li\u003e\n\u003cli\u003eGalaxy and star-field imaging\u003c\/li\u003e\n\u003cli\u003eFull-frame astrophotography\u003c\/li\u003e\n\u003cli\u003eMedium-format astrophotography\u003c\/li\u003e\n\u003cli\u003eAdvanced backyard imaging systems\u003c\/li\u003e\n\u003cli\u003ePermanent or semi-permanent observatory setups\u003c\/li\u003e\n\u003cli\u003eHigh-end imaging refractor\/astrograph systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCamera and Accessory Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe Ultra-Cat 131 is designed for medium-format, full-frame, APS-C, and Micro Four Thirds camera systems. It includes M68, M54, and M48 camera adapter support and works with common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X.\u003c\/p\u003e\n\u003cp\u003eFor astrophotographers comparing large imaging refractors, the Ultra-Cat 131 is a strong option when the priority is a fast, corrected Petzval design with a large image circle and support for modern large-sensor cameras.\u003c\/p\u003e\n\u003ch2\u003eImportant Limitation\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Ultra-Cat 131 is an \u003cstrong\u003eastrophotography-only telescope\u003c\/strong\u003e. It is not intended for visual observing and should not be chosen by customers looking for eyepiece viewing, casual visual astronomy, or a beginner visual telescope. It should be recommended to customers whose primary goal is deep-sky imaging, not visual observation.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the William Optics Ultra-Cat 131 good for beginners?\u003c\/h3\u003e\n\u003cp\u003eThe Ultra-Cat 131 is best suited for experienced astrophotographers or serious imagers building a high-end deep-sky imaging system. Beginners can use it, but they should already be comfortable with equatorial mounts, guiding, camera spacing, focusing, and image processing.\u003c\/p\u003e\n\u003ch3\u003eCan the Ultra-Cat 131 be used for visual observing?\u003c\/h3\u003e\n\u003cp\u003eNo. The Ultra-Cat 131 is designed specifically for astrophotography and is not intended for visual observing with eyepieces.\u003c\/p\u003e\n\u003ch3\u003eWhat type of astrophotography is the Ultra-Cat 131 best for?\u003c\/h3\u003e\n\u003cp\u003eIt is best for deep-sky astrophotography, including nebulae, galaxies, star fields, mosaics, and large-format imaging with full-frame or medium-format cameras.\u003c\/p\u003e\n\u003ch3\u003eDoes the Ultra-Cat 131 need a field flattener?\u003c\/h3\u003e\n\u003cp\u003eNo. Its 5-element Petzval optical design is built to provide a flat image field without an additional flattener.\u003c\/p\u003e\n\u003ch3\u003eWhat camera formats work with the Ultra-Cat 131?\u003c\/h3\u003e\n\u003cp\u003eThe Ultra-Cat 131 supports medium-format, full-frame, APS-C, and Micro Four Thirds camera systems.\u003c\/p\u003e\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Ultra-Cat 131 is best for experienced astrophotographers looking for a premium 131mm f\/4.9 Petzval astrograph for deep-sky imaging with full-frame or medium-format cameras. It is a strong choice for imagers who want a fast, corrected optical system with a large image circle and excellent support for advanced camera setups. This telescope is not intended for visual observing.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/williamoptics.com\/cdn\/shop\/files\/Diagram_UltraCat-131_SD.jpg?v=1771925443\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/williamoptics.com\/cdn\/shop\/files\/Diagram_UltraCat-131_LA.jpg?v=1765448234\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53153887912047,"sku":"T-C-131BR-AI-DEMO","price":7559.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ultra-cat-131-perspective-1.jpg?v=1779637072"},{"product_id":"william-optics-ultra-cat-56","title":"William Optics Ultra-Cat 56","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Ultra-Cat 56\u003c\/strong\u003e is a compact 56mm f\/4.8 Petzval astrograph designed for portable wide-field deep-sky astrophotography. With a 269mm focal length, advanced 5-element Petzval optical design, and a 50mm image circle, it is built for astrophotographers who want a small, travel-friendly imaging telescope that can still support serious camera systems.\u003c\/p\u003e\n\n\u003cp\u003eThis telescope is designed for imaging large nebulae, star fields, Milky Way regions, mosaics, and wide deep-sky targets where a short focal length and corrected field are important. It is especially useful for travel imaging rigs, lightweight equatorial mounts, and astrophotographers who want a high-quality refractor\/astrograph that is easier to transport than larger aperture systems.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Ultra-Cat 56 is best for astrophotographers who want a premium compact astrograph for ultra-wide-field imaging. It is a strong fit for portable setups, travel-friendly astrophotography, and users working with full-frame, APS-C, or Micro Four Thirds cameras. It can also be used in advanced imaging setups where a short 269mm focal length is preferred.\u003c\/p\u003e\n\n\u003cp\u003eThis product is well suited to intermediate and experienced imagers who understand equatorial mounts, camera connection, focusing, guiding, and image processing. Beginners can use it as part of a planned astrophotography system, but it is not a visual observing telescope.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact 56mm aperture:\u003c\/strong\u003e Ideal for portable astrophotography and lightweight imaging systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.8 optics:\u003c\/strong\u003e Helps capture deep-sky objects efficiently with shorter exposure times.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e269mm focal length:\u003c\/strong\u003e Excellent for wide nebulae, star fields, large targets, and mosaic work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5-element Petzval design:\u003c\/strong\u003e Produces a flat image field without requiring a separate flattener.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e50mm image circle:\u003c\/strong\u003e Supports full-frame, APS-C, and Micro Four Thirds cameras, with medium-format compatibility noted by the manufacturer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWIFD internal focuser:\u003c\/strong\u003e Helps maintain balance and stable focusing for astrophotography.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated tilt adjustment and rotator:\u003c\/strong\u003e Helps fine-tune camera alignment and image framing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePortable deep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eWide-field nebula imaging\u003c\/li\u003e\n  \u003cli\u003eMilky Way region imaging\u003c\/li\u003e\n  \u003cli\u003eLarge star fields and dark nebulae\u003c\/li\u003e\n  \u003cli\u003eTravel astrophotography setups\u003c\/li\u003e\n  \u003cli\u003eFull-frame, APS-C, and Micro Four Thirds imaging systems\u003c\/li\u003e\n  \u003cli\u003eLightweight mount and grab-and-go imaging rigs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThe Ultra-Cat 56 includes camera adapter support for M54 and M48 connections and is designed for common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. It is compatible with electronic automatic focusing systems and uses a WIFD rack-and-pinion focuser for stable, precise imaging.\u003c\/p\u003e\n\n\u003cp\u003eThe telescope uses a Vixen to Arca-Swiss style dovetail arrangement, making it well suited to compact astrophotography setups. As with any imaging telescope, customers should confirm camera adapter needs, focusing accessories, guiding setup, and mount capacity before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Ultra-Cat 56 is an \u003cstrong\u003eastrophotography-only telescope\u003c\/strong\u003e. It is not intended for visual observing and should not be recommended to customers looking for eyepiece viewing, casual visual astronomy, or a general beginner telescope. It is best selected by customers whose primary goal is wide-field imaging.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the William Optics Ultra-Cat 56 good for beginners?\u003c\/h3\u003e\n\u003cp\u003eIt can be used by a beginner who is building a dedicated astrophotography system, but it is best for users who already understand mounts, cameras, focusing, and image capture. It is not a beginner visual telescope.\u003c\/p\u003e\n\n\u003ch3\u003eWhat type of astrophotography is the Ultra-Cat 56 best for?\u003c\/h3\u003e\n\u003cp\u003eThe Ultra-Cat 56 is best for portable wide-field deep-sky imaging, including large nebulae, star fields, Milky Way regions, and mosaic projects.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the Ultra-Cat 56 need a field flattener?\u003c\/h3\u003e\n\u003cp\u003eNo. Its 5-element Petzval optical design is built to provide a flat field without a separate field flattener.\u003c\/p\u003e\n\n\u003ch3\u003eWhat camera formats work with the Ultra-Cat 56?\u003c\/h3\u003e\n\u003cp\u003eThe Ultra-Cat 56 is optimized for full-frame, APS-C, and Micro Four Thirds sensors, with manufacturer-noted compatibility for medium-format imaging setups.\u003c\/p\u003e\n\n\u003ch3\u003eCan the Ultra-Cat 56 be used for visual observing?\u003c\/h3\u003e\n\u003cp\u003eNo. The Ultra-Cat 56 is designed specifically for astrophotography and does not support visual observing.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Ultra-Cat 56 is a strong choice for astrophotographers who want a premium, compact, wide-field Petzval astrograph for portable deep-sky imaging. Choose it for travel-friendly astrophotography, large nebulae, star fields, and full-frame or APS-C imaging setups. Do not choose this telescope if your main goal is visual observing.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical report graphics are provided for customers who want to review the telescope’s spot diagram, longitudinal aberration, MTF, and relative illumination performance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-56-spot-diagram.jpg?v=1779641844\" alt=\"William Optics Ultra-Cat 56 spot diagram optical report\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-56-longitudinal-aberration.jpg?v=1779641851\" alt=\"William Optics Ultra-Cat 56 longitudinal aberration optical report\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-56-mtf-diagram.jpg?v=1779641857\" alt=\"William Optics Ultra-Cat 56 MTF optical report\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-56-relative-illumination.jpg?v=1779641862\" alt=\"William Optics Ultra-Cat 56 relative illumination optical report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53153910128751,"sku":"T-C-56BR","price":1957.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-56-perspective-1.jpg?v=1779641709"},{"product_id":"william-optics-ultra-cat-76","title":"William Optics Ultra-Cat 76","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Ultra-Cat 76\u003c\/strong\u003e is a high-performance 76mm f\/4.8 Petzval astrograph designed for wide-field deep-sky astrophotography. With a 365mm focal length, 5-element advanced Petzval optical system, and 50mm image circle, it is built for sharp flat-field imaging with full-frame, APS-C, and Micro Four Thirds cameras.\u003c\/p\u003e\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eBest for astrophotographers who want a compact but serious imaging refractor for nebulae, star fields, large deep-sky targets, travel imaging, and full-frame camera setups.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-element Petzval optics:\u003c\/strong\u003e Flat imaging field with no separate flattener required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50mm image circle:\u003c\/strong\u003e Supports full-frame, APS-C, and Micro Four Thirds cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast f\/4.8 focal ratio:\u003c\/strong\u003e Helps capture deep-sky targets efficiently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD focuser:\u003c\/strong\u003e Stable internal focusing with EAF compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eNebula and star-field imaging\u003c\/li\u003e\n\u003cli\u003eFull-frame astrophotography\u003c\/li\u003e\n\u003cli\u003ePortable imaging systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Ultra-Cat 76 includes M54 and M48 camera adapters and supports common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X.\u003c\/p\u003e\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThis telescope is designed specifically for astrophotography and does not support visual observation.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDoes the Ultra-Cat 76 need a flattener?\u003c\/h3\u003e\u003cp\u003eNo. The Petzval optical design provides a flat field without a separate field flattener.\u003c\/p\u003e\u003ch3\u003eWhat camera formats work with the Ultra-Cat 76?\u003c\/h3\u003e\u003cp\u003eIt supports full-frame, APS-C, and Micro Four Thirds cameras, with medium-format compatibility noted by William Optics.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eNo. It is an astrophotography-only telescope.\u003c\/p\u003e\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Ultra-Cat 76 is a strong choice for astrophotographers who want a premium compact 76mm f\/4.8 Petzval astrograph for full-frame wide-field deep-sky imaging. Choose it for nebulae, star fields, and portable imaging rigs. Do not choose it for visual observing.\u003c\/p\u003e\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphics are provided for customers reviewing spot diagram, longitudinal aberration, MTF, and relative illumination performance.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-76-spot-diagram.jpg?v=1779642249\" alt=\"William Optics Ultra-Cat 76 spot diagram optical report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-76-longitudinal-aberration.jpg?v=1779642256\" alt=\"William Optics Ultra-Cat 76 longitudinal aberration optical report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-76-mtf-diagram.jpg?v=1779642262\" alt=\"William Optics Ultra-Cat 76 MTF optical report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-76-relative-illumination.jpg?v=1779642269\" alt=\"William Optics Ultra-Cat 76 relative illumination optical report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53153911996527,"sku":"T-C-76BR","price":3033.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-76-perspective-1.jpg?v=1779642198"},{"product_id":"william-optics-cat-91-wifd","title":"William Optics Cat 91 WIFD","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Cat 91 WIFD\u003c\/strong\u003e is a 91mm f\/4.9 advanced Petzval astrograph designed for serious deep-sky astrophotography with full-frame and medium-format cameras. With a 448mm focal length, 55mm image circle, and William Optics Internal Focuser Design, it is built for astrophotographers who want a compact but capable imaging telescope with a large corrected field.\u003c\/p\u003e\n\n\u003cp\u003eThe Cat 91 is designed for imaging galaxies, nebulae, star fields, and wide deep-sky targets where sharp stars across the frame are important. Its 5-element Petzval optical system provides flat-field imaging without requiring a separate field flattener or backfocus-sensitive optical train.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Cat 91 WIFD is best for intermediate to advanced astrophotographers who want a portable, high-quality astrograph that supports full-frame and medium-format imaging systems. It is a strong choice for imagers who want more reach and aperture than smaller travel astrographs, while still keeping the system manageable for backyard and portable use.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e91mm aperture:\u003c\/strong\u003e Provides strong light-gathering performance in a portable imaging platform.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.9 focal ratio:\u003c\/strong\u003e Helps capture faint deep-sky targets efficiently.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5-element Petzval design:\u003c\/strong\u003e Produces a flat field without a separate flattener.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e55mm image circle:\u003c\/strong\u003e Supports full-frame and medium-format camera systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWIFD internal focuser:\u003c\/strong\u003e Helps maintain balance and reduce focuser tilt from heavy imaging trains.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated tilt and rotation control:\u003c\/strong\u003e Helps fine-tune camera alignment and framing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eFull-frame and medium-format imaging\u003c\/li\u003e\n  \u003cli\u003eNebula and galaxy imaging\u003c\/li\u003e\n  \u003cli\u003eWide-field and mid-focal-length imaging\u003c\/li\u003e\n  \u003cli\u003ePortable and backyard imaging systems\u003c\/li\u003e\n  \u003cli\u003eAdvanced astrophotography setups with cooled cameras\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThe Cat 91 WIFD supports common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. Its WIFD focuser is compatible with electronic automatic focusing devices without requiring a separate mounting bracket kit. Customers should confirm their camera adapter, filter wheel, focuser, guide setup, and mount capacity before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Cat 91 WIFD is designed for astrophotography. It should be recommended to customers building an imaging system, not to customers looking primarily for eyepiece-based visual observing or a simple beginner visual telescope.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the Cat 91 WIFD good for beginners?\u003c\/h3\u003e\n\u003cp\u003eIt can be used by a beginner who is committed to building a dedicated astrophotography system, but it is best suited to users who already understand equatorial mounts, cameras, focusing, guiding, and image processing.\u003c\/p\u003e\n\u003ch3\u003eWhat type of astrophotography is the Cat 91 WIFD best for?\u003c\/h3\u003e\n\u003cp\u003eIt is best for deep-sky astrophotography, including nebulae, galaxies, star fields, and wide to mid-field imaging with full-frame or medium-format cameras.\u003c\/p\u003e\n\u003ch3\u003eDoes the Cat 91 WIFD need a flattener?\u003c\/h3\u003e\n\u003cp\u003eNo. Its advanced Petzval optical design provides a flat field without a separate field flattener.\u003c\/p\u003e\n\u003ch3\u003eWhat cameras work with the Cat 91 WIFD?\u003c\/h3\u003e\n\u003cp\u003eIt is designed for full-frame and medium-format cameras, and it also works well with APS-C and Micro Four Thirds imaging systems.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Cat 91 WIFD is a strong choice for astrophotographers who want a premium 91mm Petzval astrograph with a large image circle, stable internal focusing, and excellent support for full-frame or medium-format deep-sky imaging. Choose it when image quality, portability, and a simplified flat-field imaging train are priorities.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical report graphic is provided for customers reviewing the Cat 91 WIFD optical design and field performance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/series-Diagram_Cat-91_1_c3019eeb-67f7-4f06-b9eb-a91b7e117208.jpg?v=1766570729\" alt=\"William Optics Cat 91 WIFD optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53153925595247,"sku":"T-C-91-SG","price":4137.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Cat-91-WIFD-pers-1__38177.jpg?v=1766570749"},{"product_id":"william-optics-ultra-cat-108-wifd","title":"William Optics Ultra-Cat 108 WIFD","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Ultra-Cat 108 WIFD\u003c\/strong\u003e is a premium 108mm f\/4.8 Petzval astrograph designed for serious deep-sky astrophotography with full-frame and medium-format camera systems. With a 518mm focal length, 60mm image circle, and advanced 5-element optical design, it is built for imagers who want high-end correction, fast optics, and a large imaging field.\u003c\/p\u003e\n\n\u003cp\u003eThis telescope is designed for nebulae, galaxies, star fields, mosaics, and large-format deep-sky imaging where sharp stars across the frame are important. Its Petzval design eliminates the need for a separate field flattener, simplifying the imaging train for advanced astrophotography setups.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Ultra-Cat 108 WIFD is best for experienced astrophotographers, observatory users, and advanced backyard imagers who want a premium large-sensor astrograph. It is especially well suited to full-frame and medium-format cameras, cooled astronomy cameras, filter wheels, electronic focusers, and semi-permanent imaging systems.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e108mm aperture:\u003c\/strong\u003e Strong light-gathering performance for serious deep-sky imaging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.8 focal ratio:\u003c\/strong\u003e Helps reduce exposure time compared with slower refractors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5-element Petzval optics:\u003c\/strong\u003e Produces a corrected flat field without requiring a separate flattener.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e60mm image circle:\u003c\/strong\u003e Supports full-frame and medium-format imaging systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWIFD internal focuser:\u003c\/strong\u003e Helps maintain stability with heavy cameras and accessories.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated tilt corrector and rotator:\u003c\/strong\u003e Helps optimize framing and corner-to-corner sharpness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eFull-frame and medium-format astrophotography\u003c\/li\u003e\n  \u003cli\u003eNebula, galaxy, and star-field imaging\u003c\/li\u003e\n  \u003cli\u003eWide-field and mid-focal-length imaging\u003c\/li\u003e\n  \u003cli\u003eAdvanced backyard and observatory imaging systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThe Ultra-Cat 108 WIFD includes M68, M54, and M48 camera adapter support and works with common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. It is compatible with electronic automatic focusing systems and is designed for demanding imaging trains.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Ultra-Cat 108 WIFD is an astrophotography-focused telescope. It should be recommended to customers building a serious imaging system rather than customers looking for a simple visual observing telescope.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the Ultra-Cat 108 WIFD good for beginners?\u003c\/h3\u003e\n\u003cp\u003eIt is best suited to experienced astrophotographers or serious beginners who are building a dedicated imaging system and understand mounts, cameras, guiding, focusing, and image processing.\u003c\/p\u003e\n\u003ch3\u003eWhat type of astrophotography is it best for?\u003c\/h3\u003e\n\u003cp\u003eIt is best for deep-sky astrophotography, including nebulae, galaxies, star fields, mosaics, and full-frame or medium-format imaging.\u003c\/p\u003e\n\u003ch3\u003eDoes it need a field flattener?\u003c\/h3\u003e\n\u003cp\u003eNo. The 5-element Petzval design provides a flat field without a separate field flattener.\u003c\/p\u003e\n\u003ch3\u003eWhat camera formats work with it?\u003c\/h3\u003e\n\u003cp\u003eThe Ultra-Cat 108 WIFD supports medium-format, full-frame, APS-C, and Micro Four Thirds imaging systems.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Ultra-Cat 108 WIFD is a strong choice for astrophotographers who want a premium 108mm f\/4.8 Petzval astrograph with a large 60mm image circle for full-frame or medium-format deep-sky imaging. Choose it when image quality, large-sensor support, and a simplified flat-field optical system are priorities.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical report graphic is provided for customers reviewing the Ultra-Cat 108 WIFD optical design and field performance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Diagram_UltraCat-108_1__47751.jpg?v=1766570880\" alt=\"William Optics Ultra-Cat 108 WIFD optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53153927954543,"sku":"L-C108-WIFD","price":5517.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-ultra-cat-108-perspective-1.jpg?v=1779643045"},{"product_id":"william-optics-minicat-51-wifd","title":"William Optics MiniCat 51 WIFD","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics MiniCat 51 WIFD\u003c\/strong\u003e is a compact 51mm f\/3.5 Petzval astrograph designed for very wide-field deep-sky astrophotography and fast portable imaging. With a 178mm focal length, 6-element Petzval optical design, and 43.2mm image circle, it is built for photographers and astrophotographers who want an ultra-fast travel-friendly imaging telescope.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe MiniCat 51 WIFD is best for astrophotographers who want a small, fast astrograph for wide nebulae, comets, Milky Way regions, star fields, and portable deep-sky imaging. It is especially useful for travel setups, lightweight mounts, APS-C cameras, and users who want a simplified flat-field imaging system.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast f\/3.5 optics:\u003c\/strong\u003e Captures faint targets efficiently in shorter exposures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e178mm focal length:\u003c\/strong\u003e Excellent for ultra-wide-field astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6-element Petzval design:\u003c\/strong\u003e Provides a corrected imaging field with no separate flattener required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD internal focuser:\u003c\/strong\u003e Helps maintain stable focusing and camera alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact travel size:\u003c\/strong\u003e Ideal for lightweight imaging rigs and portable mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eLarge nebula imaging\u003c\/li\u003e\n\u003cli\u003eComet imaging\u003c\/li\u003e\n\u003cli\u003eMilky Way region imaging\u003c\/li\u003e\n\u003cli\u003eTravel astrophotography\u003c\/li\u003e\n\u003cli\u003eAPS-C and Micro Four Thirds camera systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe MiniCat 51 WIFD includes a tilt adjuster rotator and M54 to M48 adapter. It supports common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. It is compatible with electronic automatic focusing systems and uses a Vixen to Arca-Swiss style dovetail arrangement.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe MiniCat 51 WIFD is designed primarily for astrophotography. William Optics notes that because of the very fast f\/3.5 optical design, edge stars may not be as round as with other RedCat models; aberration correction software can help improve peripheral star shapes, especially on APS-C sensors.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the MiniCat 51 WIFD good for beginners?\u003c\/h3\u003e\u003cp\u003eIt can be a good choice for beginners who are specifically building a compact astrophotography rig, but it is best used with an equatorial mount, camera, and basic imaging workflow.\u003c\/p\u003e\u003ch3\u003eWhat type of astrophotography is it best for?\u003c\/h3\u003e\u003cp\u003eIt is best for ultra-wide-field deep-sky imaging, large nebulae, comets, Milky Way regions, and travel astrophotography.\u003c\/p\u003e\u003ch3\u003eDoes it need a field flattener?\u003c\/h3\u003e\u003cp\u003eNo. Its Petzval optical design is built to provide a flat field without a separate flattener.\u003c\/p\u003e\u003ch3\u003eWhat camera formats work with it?\u003c\/h3\u003e\u003cp\u003eAPS-C is recommended, while full-frame is listed as compatible and may require more attention to edge correction.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics MiniCat 51 WIFD is a strong choice for astrophotographers who want the fastest and most portable Cat-series astrograph for large targets and travel imaging. Choose it for wide-field imaging speed and compact size. Consider a slower Cat model if your priority is cleaner edge performance without software correction.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphics are included for customers who want to review optical performance, spot behavior, and field quality.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-minicat-51-wifd-spot-diagram.jpg?v=1779643994\" alt=\"William Optics MiniCat 51 WIFD spot diagram optical report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-minicat-51-wifd-eccentricity-fwhm.jpg?v=1779644001\" alt=\"William Optics MiniCat 51 WIFD eccentricity and FWHM optical report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-minicat-51-wifd-optical-diagram-2.jpg?v=1779644011\" alt=\"William Optics MiniCat 51 WIFD optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53153989918831,"sku":"T-C-MINI-RD","price":1363.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-minicat-51-wifd-perspective-1.jpg?v=1779643883"},{"product_id":"william-optics-cat-51-wifd","title":"William Optics Cat 51 WIFD","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Cat 51 WIFD\u003c\/strong\u003e is a compact 51mm f\/4.9 Petzval astrograph designed for wide-field astrophotography and portable imaging. With a 250mm focal length, 48mm image circle, and William Optics Internal Focuser Design, it is built for astrophotographers who want a small, high-quality imaging telescope with a flat field and simple camera connection.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Cat 51 WIFD is best for beginner to intermediate astrophotographers who want a portable astrograph for large nebulae, star fields, comets, and travel-friendly deep-sky imaging. It is also a good fit for experienced imagers who want a compact wide-field telescope for a second imaging rig.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e51mm aperture:\u003c\/strong\u003e Compact and easy to mount for travel or grab-and-go imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250mm focal length:\u003c\/strong\u003e Excellent for wide-field nebulae and star fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-element Petzval design:\u003c\/strong\u003e Flat-field imaging without a separate field flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48mm image circle:\u003c\/strong\u003e Supports full-frame, APS-C, and Micro Four Thirds cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD focuser:\u003c\/strong\u003e Helps maintain better stability with camera accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eLarge nebula imaging\u003c\/li\u003e\n\u003cli\u003eStar-field imaging\u003c\/li\u003e\n\u003cli\u003eComet imaging\u003c\/li\u003e\n\u003cli\u003eTravel astrophotography\u003c\/li\u003e\n\u003cli\u003eLightweight equatorial mount setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Cat 51 WIFD includes a tilt adjuster, rotator, and M54 to M48 adapter. It supports common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. Customers should confirm camera adapter requirements, focusing setup, and mount capacity before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Cat 51 WIFD is primarily an astrophotography telescope. It is best recommended for imaging customers rather than customers looking for a dedicated visual observing telescope.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Cat 51 WIFD good for beginners?\u003c\/h3\u003e\u003cp\u003eYes, it is one of the more approachable William Optics astrographs for customers starting a compact astrophotography system, provided they also have a suitable tracking mount and camera.\u003c\/p\u003e\u003ch3\u003eWhat type of astrophotography is it best for?\u003c\/h3\u003e\u003cp\u003eIt is best for wide-field deep-sky imaging, large nebulae, star fields, and travel astrophotography.\u003c\/p\u003e\u003ch3\u003eDoes it need a flattener?\u003c\/h3\u003e\u003cp\u003eNo. Its Petzval design provides a flat imaging field without a separate field flattener.\u003c\/p\u003e\u003ch3\u003eWhat camera formats work with it?\u003c\/h3\u003e\u003cp\u003eIt supports full-frame, APS-C, and Micro Four Thirds cameras.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Cat 51 WIFD is a strong choice for astrophotographers who want a compact, high-quality, wide-field Petzval astrograph for portable deep-sky imaging. Choose it for easy transport, simple flat-field imaging, and large-target astrophotography.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphics are included for customers who want to review optical performance.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-cat-51-wifd-spot-diagram.jpg?v=1779645003\" alt=\"William Optics Cat 51 WIFD spot diagram optical report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-cat-51-wifd-longitudinal-aberration.jpg?v=1779645014\" alt=\"William Optics Cat 51 WIFD longitudinal aberration optical report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-cat-51-wifd-wavefront-report.jpg?v=1779645021\" alt=\"William Optics Cat 51 WIFD wavefront optical report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53154015805551,"sku":"L-RC51RDIII-AI-DRAFT","price":1225.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Redcat-51-perspective-1__25884.jpg?v=1766571054"},{"product_id":"william-optics-cat-61-wifd","title":"William Optics Cat 61 WIFD","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Cat 61 WIFD\u003c\/strong\u003e is a compact 61mm f\/4.9 Petzval astrograph designed for wide-field deep-sky astrophotography, portable imaging, and full-frame camera support. With a 300mm focal length, 46mm image circle, and William Optics Internal Focuser Design, it gives astrophotographers a small but capable imaging telescope with a flat field and stable focusing.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Cat 61 WIFD is best for beginner to intermediate astrophotographers who want more aperture and reach than a 51mm astrograph while still keeping the system compact and travel-friendly. It is also useful for advanced imagers building a lightweight secondary wide-field rig.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e61mm aperture:\u003c\/strong\u003e More light gathering than smaller travel astrographs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300mm focal length:\u003c\/strong\u003e Ideal for wide nebulae, star fields, and larger deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-element Petzval design:\u003c\/strong\u003e Flat-field imaging without a separate field flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e46mm image circle:\u003c\/strong\u003e Supports full-frame, APS-C, and Micro Four Thirds cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD focuser:\u003c\/strong\u003e Helps maintain focus stability with camera accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eNebula and star-field imaging\u003c\/li\u003e\n\u003cli\u003ePortable astrophotography setups\u003c\/li\u003e\n\u003cli\u003eFull-frame, APS-C, and Micro Four Thirds imaging\u003c\/li\u003e\n\u003cli\u003eLightweight equatorial mount systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Cat 61 WIFD includes a tilt adjuster, M60 to M54 rotator, and M54 to M48 adapter. It supports common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. Customers should confirm camera adapter, focuser, guide scope, and mount capacity needs before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Cat 61 WIFD is primarily an astrophotography telescope. It is best recommended for customers building an imaging system rather than customers looking for a simple visual observing telescope.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Cat 61 WIFD good for beginners?\u003c\/h3\u003e\u003cp\u003eYes, it can be a strong beginner astrophotography telescope when paired with a suitable tracking mount and camera.\u003c\/p\u003e\u003ch3\u003eWhat type of astrophotography is it best for?\u003c\/h3\u003e\u003cp\u003eIt is best for wide-field deep-sky imaging, including nebulae, star fields, large galaxies, and travel imaging setups.\u003c\/p\u003e\u003ch3\u003eDoes it need a field flattener?\u003c\/h3\u003e\u003cp\u003eNo. Its 4-element Petzval design provides a flat imaging field without a separate flattener.\u003c\/p\u003e\u003ch3\u003eWhat camera formats work with it?\u003c\/h3\u003e\u003cp\u003eIt supports full-frame, APS-C, and Micro Four Thirds cameras.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Cat 61 WIFD is a strong choice for astrophotographers who want a compact, full-frame-capable Petzval astrograph with more reach than a 51mm model. Choose it for portable deep-sky imaging, large nebulae, and simple flat-field camera setups.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphics are included for customers who want to review optical performance.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/upload-1779645442351.jpg?v=1779645444\" alt=\"William Optics Cat 61 WIFD optical diagram report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/upload-1779645455058.jpg?v=1779645456\" alt=\"William Optics Cat 61 WIFD optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53154047885423,"sku":"T-C-61RD","price":1929.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/upload-1779645409495.jpg?v=1779645411"},{"product_id":"william-optics-cat-71-wifd","title":"William Optics Cat 71 WIFD","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Cat 71 WIFD\u003c\/strong\u003e is a 71mm f\/4.9 Petzval astrograph designed for wide-field deep-sky astrophotography with full-frame camera support. With a 350mm focal length, flat-field optical design, and William Optics Internal Focuser Design, it gives astrophotographers a compact but more capable imaging platform than smaller 51mm and 61mm models.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Cat 71 WIFD is best for intermediate astrophotographers who want a portable imaging telescope with more aperture and reach while still maintaining a wide field of view. It is well suited to full-frame, APS-C, and Micro Four Thirds camera users imaging nebulae, galaxies, star fields, and large deep-sky objects.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e71mm aperture:\u003c\/strong\u003e More light gathering than smaller Cat-series models while staying portable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e350mm focal length:\u003c\/strong\u003e A versatile wide-field focal length for many deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePetzval optical design:\u003c\/strong\u003e Flat-field imaging without requiring a separate field flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD focuser:\u003c\/strong\u003e Helps maintain focus stability and balance with camera accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-frame support:\u003c\/strong\u003e A good fit for modern full-frame, APS-C, and Micro Four Thirds cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eNebula and star-field imaging\u003c\/li\u003e\n\u003cli\u003ePortable and backyard imaging systems\u003c\/li\u003e\n\u003cli\u003eFull-frame and APS-C camera setups\u003c\/li\u003e\n\u003cli\u003eLightweight to mid-size equatorial mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Cat 71 WIFD is designed for astrophotography camera systems and includes camera-side adapter support for common imaging setups. Customers should confirm camera adapter needs, guide scope setup, focuser requirements, filter wheel clearance, and mount capacity before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Cat 71 WIFD is primarily an astrophotography telescope. It is best recommended for imaging customers rather than customers looking for a simple visual observing telescope.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Cat 71 WIFD good for beginners?\u003c\/h3\u003e\u003cp\u003eIt can be used by a beginner building a serious astrophotography system, but it is best for users who understand tracking mounts, camera connection, focusing, guiding, and image processing.\u003c\/p\u003e\u003ch3\u003eWhat type of astrophotography is it best for?\u003c\/h3\u003e\u003cp\u003eIt is best for wide-field deep-sky imaging, including nebulae, star fields, large galaxies, and portable imaging setups.\u003c\/p\u003e\u003ch3\u003eDoes it need a field flattener?\u003c\/h3\u003e\u003cp\u003eNo. The Petzval optical design provides a flat imaging field without a separate field flattener.\u003c\/p\u003e\u003ch3\u003eWhat camera formats work with it?\u003c\/h3\u003e\u003cp\u003eThe Cat 71 WIFD is designed for modern astronomy cameras, including full-frame, APS-C, and Micro Four Thirds imaging setups.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Cat 71 WIFD is a strong choice for astrophotographers who want a portable Petzval astrograph with more reach and aperture than the smaller Cat-series models. Choose it for full-frame-capable wide-field imaging, nebulae, star fields, and a compact but serious deep-sky setup.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphics are included for customers who want to review optical performance.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/upload-1779645502215.jpg?v=1779645504\" alt=\"William Optics Cat 71 WIFD optical diagram report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/upload-1779645512594.jpg?v=1779645514\" alt=\"William Optics Cat 71 WIFD optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53154053292143,"sku":"T-C-71RD","price":2518.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/upload-1779645472685.jpg?v=1779645474"},{"product_id":"william-optics-pleiades-68-astrograph","title":"William Optics Pleiades 68 Astrograph","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Pleiades 68 Astrograph\u003c\/strong\u003e is a fast 68mm f\/3.8 7-element imaging APO designed for advanced wide-field deep-sky astrophotography. With a 260mm focal length, 48mm image circle, Super ED glass, and William Optics Internal Focuser Design, it is built for astrophotographers who want speed, precision, and a compact optical system for full-frame and APS-C imaging.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Pleiades 68 is best for intermediate to advanced astrophotographers who want an ultra-fast wide-field astrograph and are comfortable with precise backfocus, focusing, and camera alignment. It is especially well suited for imagers who want to capture nebulae, large star fields, and faint deep-sky structures with shorter exposures.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast f\/3.8 focal ratio:\u003c\/strong\u003e Helps reduce exposure time for deep-sky imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7-element optical design:\u003c\/strong\u003e Built for sharp, well-corrected astro-imaging performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e68mm aperture:\u003c\/strong\u003e Compact but capable light-gathering performance for wide-field imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48mm image circle:\u003c\/strong\u003e Supports full-frame, APS-C, and Micro Four Thirds imaging systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD focuser:\u003c\/strong\u003e Helps maintain stability in demanding astrophotography setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFast wide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eLarge nebula imaging\u003c\/li\u003e\n\u003cli\u003eMilky Way region imaging\u003c\/li\u003e\n\u003cli\u003eStar-field imaging\u003c\/li\u003e\n\u003cli\u003ePortable and advanced backyard imaging systems\u003c\/li\u003e\n\u003cli\u003eFull-frame and APS-C camera setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Pleiades 68 includes a tilt adjuster rotator plus M63 to M48 and M63 to M54 adapters. It supports common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. William Optics notes that this model does not include an internal M48 filter thread, so a filter wheel connected to the M48 or M54 thread is recommended for filter use.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Pleiades 68 is designed specifically for astrophotography and does not support visual observing. Its fast f\/3.8 optical system also makes accurate 55mm backfocus especially important for optimal performance.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Pleiades 68 good for beginners?\u003c\/h3\u003e\u003cp\u003eIt is better suited to intermediate and advanced astrophotographers because the fast f\/3.8 design rewards precise spacing, focus, and camera setup.\u003c\/p\u003e\u003ch3\u003eWhat type of astrophotography is it best for?\u003c\/h3\u003e\u003cp\u003eIt is best for fast wide-field deep-sky imaging, large nebulae, star fields, and full-frame or APS-C astrophotography.\u003c\/p\u003e\u003ch3\u003eDoes it need a flattener?\u003c\/h3\u003e\u003cp\u003eNo. The optical design is built for astro-imaging without a separate field flattener.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eNo. This telescope is designed for astrophotography only and does not support visual observing.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Pleiades 68 is a strong choice for astrophotographers who want a very fast compact astrograph for wide-field deep-sky imaging. Choose it when imaging speed, full-frame support, and high optical correction matter. Consider a more forgiving Cat-series model if you want simpler setup and less sensitivity to backfocus spacing.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphic is included for customers who want to review optical performance.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-pleiades-68-diagram-01.jpg?v=1779647395\" alt=\"William Optics Pleiades 68 optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53154133409903,"sku":"T-P-68BU","price":3033.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-pleiades-68-perspective-1.jpg?v=1779647322"},{"product_id":"william-optics-pleiades-111-astrograph","title":"William Optics Pleiades 111 Astrograph","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Pleiades 111 Astrograph\u003c\/strong\u003e is a premium 111mm f\/4.8 7-element imaging APO designed for serious deep-sky astrophotography with large, high-resolution cameras. With a 528mm focal length, Super ED glass, WIFD internal focusing, camera angle rotation, and tilt adjustment, it is built for astrophotographers who want sharp, high-contrast imaging performance in a dedicated astrograph.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Pleiades 111 is best for experienced astrophotographers using full-frame, APS-C, or Micro Four Thirds cameras who want a fast, premium imaging telescope for nebulae, galaxies, star fields, and detailed deep-sky targets. It is a strong choice for advanced backyard imagers, permanent setups, and customers who value a purpose-built optical system for imaging rather than visual observing.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e111mm aperture:\u003c\/strong\u003e Provides serious light-gathering ability for deep-sky imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast f\/4.8 focal ratio:\u003c\/strong\u003e Helps capture faint objects efficiently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7-element astrograph optical system:\u003c\/strong\u003e Designed for sharp, well-corrected astrophotography performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e528mm focal length:\u003c\/strong\u003e A versatile focal length for nebulae, galaxies, and star fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD internal focuser:\u003c\/strong\u003e Maintains stability with heavier camera systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated rotator and tilt adapter:\u003c\/strong\u003e Helps with framing and corner-to-corner image optimization.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eNebula and galaxy imaging\u003c\/li\u003e\n\u003cli\u003eFull-frame and APS-C imaging systems\u003c\/li\u003e\n\u003cli\u003eAdvanced backyard astrophotography\u003c\/li\u003e\n\u003cli\u003ePermanent or semi-permanent observatory setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Pleiades 111 includes a tilt adjuster rotator with M48 and M54 camera adapters. It supports common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. William Optics recommends a precise 55mm backfocus setting, and customers should carefully confirm camera spacing, filter wheel thickness, and adapter requirements before imaging.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Pleiades 111 is an astrophotography-only telescope and does not support visual observation. It is best for customers building a dedicated imaging system, not customers looking for an eyepiece-based visual telescope.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Pleiades 111 good for beginners?\u003c\/h3\u003e\u003cp\u003eIt is best for experienced imagers or serious beginners who are comfortable with equatorial mounts, guiding, backfocus spacing, focusing, and image processing.\u003c\/p\u003e\u003ch3\u003eWhat type of astrophotography is it best for?\u003c\/h3\u003e\u003cp\u003eIt is best for deep-sky astrophotography, including nebulae, galaxies, star fields, and full-frame camera imaging.\u003c\/p\u003e\u003ch3\u003eDoes it need a flattener?\u003c\/h3\u003e\u003cp\u003eNo. The Pleiades 111 is designed as a 7-element astrograph and does not require a separate flattener.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eNo. William Optics specifies that this telescope is designed for astrophotography and does not support visual observation.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Pleiades 111 is a strong choice for astrophotographers who want a premium, fast, mid-focal-length astrograph for detailed deep-sky imaging. Choose it if you need more aperture and reach than compact astrographs while keeping the image train purpose-built for cameras. Do not choose it if your goal is visual observing.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphic is included for customers who want to review optical performance.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-pleiades-111-diagram-01.jpg?v=1779647652\" alt=\"William Optics Pleiades 111 optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53154142027887,"sku":"T-P-111BU","price":5793.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-pleiades-111-perspective-1.jpg?v=1779647602"},{"product_id":"william-optics-pleiades-181-astrograph","title":"William Optics Pleiades 181 Astrograph","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Pleiades 181 Astrograph\u003c\/strong\u003e is a large-aperture 181mm f\/5.5 7-element astrograph designed for advanced astrophotographers using medium-format and full-frame camera systems. With a 998mm focal length, greater-than-55mm corrected image circle, Super ED glass, and a precision rack-and-pinion focuser, it is built for serious deep-sky imaging where resolution, optical correction, and large camera support are priorities.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Pleiades 181 is best for advanced astrophotographers, permanent observatory users, and serious backyard imagers who want a high-end imaging telescope for medium-format astrophotography. It is ideal for customers who already understand equatorial mounts, guiding, camera spacing, focusing, large imaging trains, and image processing.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e181mm aperture:\u003c\/strong\u003e Large light-gathering performance for serious deep-sky imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e998mm focal length:\u003c\/strong\u003e Excellent for galaxies, detailed nebulae, and high-resolution deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7-element temperature-compensated optical system:\u003c\/strong\u003e Designed for sharp, stable imaging performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium-format support:\u003c\/strong\u003e Corrected for a greater-than-55mm image circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.1-inch rack-and-pinion focuser:\u003c\/strong\u003e Supports demanding imaging trains and precise focusing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCosmos steering wheel:\u003c\/strong\u003e Helps with handling, rotation, and positioning of the large optical tube.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAdvanced deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eMedium-format imaging\u003c\/li\u003e\n\u003cli\u003eFull-frame astrophotography\u003c\/li\u003e\n\u003cli\u003eGalaxy and nebula imaging\u003c\/li\u003e\n\u003cli\u003ePermanent and semi-permanent observatory setups\u003c\/li\u003e\n\u003cli\u003eHigh-resolution long-exposure imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Pleiades 181 includes a tilt adjuster rotator plus M68, M54, and M48 camera adapters. It supports common camera mount ecosystems including Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro Four Thirds, and Fuji X. Customers should confirm mount capacity, camera spacing, filter wheel clearance, focuser control, guiding setup, and permanent mounting requirements before purchase. The EQ mount shown in vendor images is not included.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Pleiades 181 is an astrophotography-only telescope and does not support visual observation. Due to its size and weight, it should be paired with a suitable high-capacity equatorial mount and is best suited to serious imaging systems rather than casual portable use.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Pleiades 181 good for beginners?\u003c\/h3\u003e\u003cp\u003eNo. The Pleiades 181 is best for advanced astrophotographers and observatory users with experience in mounts, guiding, camera spacing, focusing, and long-exposure imaging.\u003c\/p\u003e\u003ch3\u003eWhat type of astrophotography is it best for?\u003c\/h3\u003e\u003cp\u003eIt is best for high-resolution deep-sky imaging, including galaxies, detailed nebulae, and medium-format astrophotography.\u003c\/p\u003e\u003ch3\u003eDoes it need a flattener?\u003c\/h3\u003e\u003cp\u003eNo. The Pleiades 181 is designed as a 7-element astrograph and does not require a separate flattener.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eNo. William Optics specifies that the optical design is for astrophotography and does not support visual observing.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Pleiades 181 is a specialized premium astrograph for experienced imagers who want large-aperture, medium-format deep-sky performance. Choose it for observatory-class astrophotography, large camera sensors, and high-resolution imaging. Do not choose it for visual astronomy, beginner use, or lightweight portable setups.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphics are included for customers who want to review optical performance.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-pleiades-181-diagram-1.jpg?v=1779647923\" alt=\"William Optics Pleiades 181 optical diagram report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-pleiades-181-diagram-2.jpg?v=1779647935\" alt=\"William Optics Pleiades 181 optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":53154152218735,"sku":"T-P-181RD","price":27597.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-pleiades-181-perspective-1.jpg?v=1779647868"},{"product_id":"askar-131f-flat-field-quadruplet-astrograph","title":"Askar 131F Flat-Field Quadruplet Astrograph","description":"\u003ch2\u003eAskar 131F Flat-Field Quadruplet Astrograph — 131mm f\/7.5\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar 131F Flat-Field\u003c\/strong\u003e is a premium 131mm aperture quadruplet APO astrograph designed for serious deep-sky astrophotographers and visual observers who want a large-aperture, plug-and-shoot instrument with no compromises. Built around a self-flattening quadruplet optical design — three elements at the front, one correcting element at the rear — the 131F delivers a flat, fully corrected image circle of 44mm, covering full-frame sensors without the need for a separate field flattener.\u003c\/p\u003e\n\n\u003cp\u003eWith a 983mm focal length at f\/7.5, the 131F occupies an ideal position for wide-field deep-sky imaging: enough aperture to collect serious light on faint nebulae and galaxies, and a focal ratio that keeps exposure times manageable. One piece of ED (extra-low dispersion) glass in the optical group keeps chromatic aberration tightly controlled across the full field.\u003c\/p\u003e\n\n\u003cp\u003eTrue to the Askar F Series philosophy, backfocus calculation is completely eliminated. Simply attach your camera adapter, achieve focus, and begin imaging — no spacer math, no flattener purchase required. The included photographic extension tube features a built-in 2-inch filter thread and ships with both M48×0.75 and M54×0.75 adapter options, covering a wide range of DSLR and dedicated astronomy cameras.\u003c\/p\u003e\n\n\u003cp\u003eThe mechanical package is equally well considered: a precision 3-inch rack-and-pinion focuser with 1:10 fine-focus adjustment, a built-in 360° camera rotator, a retractable dew shield, two finder scope bases, and a 300mm Losmandy-style dovetail plate — all finished in the iconic Askar blue-and-white CNC-machined tube body.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermediate and advanced astrophotographers\u003c\/strong\u003e who want to step up to a large-aperture, full-frame-capable astrograph without the complexity of external flatteners or backfocus calculations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e targeting nebulae, galaxy clusters, and large emission regions who want both resolution and field width in a single instrument.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne-scope-for-everything users\u003c\/strong\u003e — the 131F performs equally well for visual observing with standard 1.25\" and 2\" eyepieces, making it genuinely dual-purpose.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImagers who use full-frame cameras\u003c\/strong\u003e — the 44mm image circle fully covers Sony, Nikon, and Canon full-frame sensors as well as large dedicated astronomy sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eObservers who prefer a clean, streamlined workflow\u003c\/strong\u003e — the self-flattening design removes setup variables and lets you focus on the sky.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar 131F?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-flattening quadruplet design\u003c\/strong\u003e — no separate field flattener to buy, no backfocus distance to calculate. Attach and shoot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame sensor coverage\u003c\/strong\u003e — the 44mm image circle covers all modern full-frame DSLR and mirrorless sensors as well as large-format dedicated astronomy cameras.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eED glass chromatic control\u003c\/strong\u003e — a single ED element in the quadruplet group suppresses false colour across the entire image field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 360° camera rotator\u003c\/strong\u003e — frame your target at any angle without repositioning the entire telescope.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium 3\" R\u0026amp;P focuser with 1:10 fine adjustment\u003c\/strong\u003e — large-format, low-flex focuser suited to heavy camera payloads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose: imaging and visual\u003c\/strong\u003e — the included 1.25\"\/2\" visual adapter makes the 131F a capable visual telescope alongside its imaging role.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive standard package\u003c\/strong\u003e — tube rings, handle, 300mm Losmandy dovetail plate, and photographic adapter set are all included.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e — practical field protection without adding to transport length.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography (nebulae, galaxy groups, star-forming regions)\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR and mirrorless astrophotography\u003c\/li\u003e\n  \u003cli\u003eDedicated astronomy camera imaging (mono and colour sensors)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging (2\" filter thread built-in)\u003c\/li\u003e\n  \u003cli\u003eVisual deep-sky observing with 1.25\" and 2\" eyepieces\u003c\/li\u003e\n  \u003cli\u003eDual-rig or multi-telescope observatory setups\u003c\/li\u003e\n  \u003cli\u003eAstrophotography club and outreach use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCamera compatibility:\u003c\/strong\u003e The 131F ships with M48×0.75 and M54×0.75 photographic adapters. DSLR users will need their camera's standard T-ring. Dedicated astronomy camera users with M42, M54, or M48 connections are directly supported. The built-in 2-inch filter thread on the extension tube accepts standard 2\" astronomy filters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMount compatibility:\u003c\/strong\u003e The included 300mm Losmandy-style dovetail plate is compatible with any mount that accepts a standard Losmandy D-plate saddle. At 7.9kg (OTA) and 9.4kg gross, a robust equatorial mount — such as a Sky-Watcher EQ6-R, iOptron CEM70, or equivalent — is recommended for imaging use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e The Askar 131F 0.74× reducer is available separately to bring the system to approximately f\/5.6 for faster imaging. Electronic focuser motor adapters are compatible with the 3\" focuser for remote or automated focus control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGuiding:\u003c\/strong\u003e Two built-in finder bases allow a guide scope to be mounted directly on the tube. Dedicated guide scopes such as the Askar 52mm guide scope series are compatible.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight requires a capable mount\u003c\/strong\u003e — at 9.4kg with rings and dovetail, this telescope needs a mid- to heavy-duty equatorial mount. It is not suited to lightweight travel mounts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ef\/7.5 is not ultrafast\u003c\/strong\u003e — for very faint targets in light-polluted skies, the optional 0.74× reducer (sold separately) is recommended to achieve f\/5.6 for shorter exposures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot ideal for planetary or lunar imaging\u003c\/strong\u003e — the 983mm focal length and f\/7.5 ratio are optimized for wide-field deep sky; high-power planetary work benefits from longer focal lengths.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge instrument\u003c\/strong\u003e — at up to 1026mm total length with the dew shield extended, this is a full-size observatory-class refractor. Travel and portability should be considered.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo electronic focuser included\u003c\/strong\u003e — the focuser is manual; an electronic focuser motor is available separately if motorized focus control is desired.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a field flattener with the Askar 131F?\u003c\/strong\u003e\u003cbr\u003e\nNo. The self-flattening quadruplet design produces a flat field natively. No separate flattener purchase is required, and no backfocus distance calculation is needed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it cover a full-frame sensor?\u003c\/strong\u003e\u003cbr\u003e\nYes. The 44mm image circle fully covers all current full-frame DSLR, mirrorless, and dedicated astronomy camera sensors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs it suitable for beginners?\u003c\/strong\u003e\u003cbr\u003e\nThe 131F is best suited to intermediate or advanced users who already have a capable equatorial mount and some experience with astrophotography. The self-flattening design does remove significant complexity, but the telescope's size, weight, and price point are more appropriate for experienced observers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat camera connections does it support?\u003c\/strong\u003e\u003cbr\u003e\nThe standard adapters cover M48×0.75 and M54×0.75 connections. DSLR users need a standard camera T-ring. Most dedicated astronomy cameras (ZWO, QHY, Player One, etc.) with M54 or M48 connections attach directly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003e\nYes. The included 1.25\"\/2\" visual adapter lets you use standard eyepieces. The 131mm aperture and 983mm focal length provide excellent wide-field visual views of open clusters, nebulae, and galaxies.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003e\nA mount rated for at least 12–15kg of payload is recommended for imaging. Examples: Sky-Watcher EQ6-R Pro, iOptron CEM70, Rainbow RST-135, or equivalent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a reducer available?\u003c\/strong\u003e\u003cbr\u003e\nYes. The Askar 131F 0.74× reducer (sold separately) reduces the focal ratio to approximately f\/5.6, enabling faster exposures and a wider field of view.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat makes it different from similarly priced astrographs?\u003c\/strong\u003e\u003cbr\u003e\nThe self-flattening quadruplet design is the key differentiator — you get a flat field across a 44mm image circle without buying or collimating an additional flattener. The built-in 360° rotator, 3\" focuser, and full accessory package also add significant real-world value over comparable bare OTAs.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar 131F Flat-Field\u003c\/strong\u003e for astrophotographers who are ready to step up to a large-aperture, full-frame-ready instrument and want the simplest possible imaging workflow. The self-flattening design is genuinely useful — it eliminates an entire category of compatibility and spacing problems that trip up even experienced imagers. Paired with a capable equatorial mount and a modern astronomy camera, the 131F is an exceptionally capable deep-sky imaging system.\u003c\/p\u003e\n\n\u003cp\u003eIf you are a beginner, a lighter and simpler telescope will serve you better while you develop your technique. If you primarily image planets or the Moon, a longer focal length instrument is a better match. But if wide-field deep-sky imaging on full-frame sensors is your goal, the Askar 131F is one of the most complete, ready-to-image packages available at this aperture class.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\n\u003cp\u003eThe following optical and mechanical diagrams are provided for customers who wish to review the Askar 131F's optical performance data, mechanical dimensions, connection specifications, and assembly details before purchasing or setting up the instrument.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/8a883eef-96d8-4147-a206-fe1420dd4855.jpg\" alt=\"Askar 131F Product Size Diagram - mechanical dimensions and tube length measurements\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a9e9b79d-844c-4873-9502-9cc87b6f3bf8.jpg\" alt=\"Askar 131F Product Size Diagram - additional mechanical dimensions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/dbaae082-9703-4ccc-a319-b6dedcb3e3d8.jpg\" alt=\"Askar 131F Connection Diagram - photographic adapter and camera connection threading specifications\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/37f4ab88-3b9a-4c66-88f2-1674920272bb.jpg\" alt=\"Askar 131F Locking Screw Position Diagram - focuser and adapter locking screw locations\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1acc5643-0b25-4789-a1b5-11c889ba55e2.jpg\" alt=\"Askar 131F Electronic Focuser Assembly Diagram - motorized focuser motor mounting instructions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/e9cb86dc-bee7-488c-89ef-47160eaf5769.jpg\" alt=\"Askar 131F Optical Path Diagram - quadruplet lens group layout and light path illustration\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/96389167-369e-4ff4-bbd2-43768e5ac17d.jpg\" alt=\"Askar 131F Spot Diagram - optical star spot performance across full-frame image circle\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154388476015,"sku":"131F-FLAT-FIELD","price":2798.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1114d666-31b5-46c4-85c4-3c57ff6d48e7.png?v=1779666429"},{"product_id":"askar-111f-flat-field-quadruplet-astrograph","title":"Askar 111F Flat-Field Quadruplet Astrograph","description":"\u003ch2\u003eAskar 111F Flat-Field Quadruplet Astrograph — 111mm f\/6.9\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar 111F Flat-Field\u003c\/strong\u003e is a 111mm aperture, 766mm focal length quadruplet APO astrograph built around Askar's proven self-flattening design philosophy. At a native f\/6.9 focal ratio, it sits between the compact 91F and the larger 131F in the F Series lineup — offering meaningful aperture and a relatively fast ratio in a package that tops out under 6kg with rings and dovetail, making it compatible with a wider range of equatorial mounts than its larger sibling.\u003c\/p\u003e\n\n\u003cp\u003eThe optical design uses four air-spaced elements — three in the front group and one correcting element in the rear — with one piece of ED glass to manage chromatic aberration across the full field. An internal baffle in the tube body further reduces stray light, and the system natively supports a 44mm image circle covering full-frame sensors. Like all F Series telescopes, it requires no separate field flattener and no backfocus calculation: connect your camera, achieve focus, and begin imaging.\u003c\/p\u003e\n\n\u003cp\u003eThe mechanical package is comprehensive: a 3\" rack-and-pinion focuser with 1:10 fine adjustment, a built-in 360° camera rotator, a retractable dew shield, two finder scope bases on the tube plus one on the handle, and a 300mm Vixen-style dovetail plate with 1\/4\" and 3\/8\" tripod screw holes. The tube body is precision CNC-machined in the signature Askar blue-and-white finish.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermediate astrophotographers\u003c\/strong\u003e stepping up from a smaller instrument who want full-frame sensor coverage with no flattener complexity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e targeting nebulae, galaxy groups, and emission regions where 111mm of aperture provides meaningful light collection advantage over sub-100mm instruments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount-limited users\u003c\/strong\u003e who want more aperture than the 91F but need to stay within the payload range of mounts like the Sky-Watcher HEQ5, iOptron CEM40, or equivalent.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose users\u003c\/strong\u003e who want both astrophotography and visual observing capability in one instrument, since the 111F accepts standard 1.25\" and 2\" eyepieces.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBudget-conscious upgraders\u003c\/strong\u003e who want a large-image-circle full-frame astrograph at a lower price point than the 131F.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar 111F?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-flattening quadruplet\u003c\/strong\u003e — no additional flattener needed, no backfocus distance to calculate. Attach your camera and shoot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e44mm full-frame image circle\u003c\/strong\u003e — covers full-frame DSLR, mirrorless, and large dedicated astronomy camera sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eED glass chromatic control\u003c\/strong\u003e — one ED element in the quadruplet group suppresses false colour across the entire image field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 360° camera rotator\u003c\/strong\u003e — frame your target at any angle without moving the telescope.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3\" R\u0026amp;P focuser with 1:10 fine adjustment\u003c\/strong\u003e — large-format, low-flex focuser with fine control protective cap.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple finder base positions\u003c\/strong\u003e — finder scope can be repositioned between handle slot and focuser-side bases without disassembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLighter than the 131F\u003c\/strong\u003e — at 6.76kg gross (with rings and Vixen dovetail), compatible with a broader range of imaging mounts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2\" filter thread built-in\u003c\/strong\u003e — the photographic extension tube accepts standard 2-inch astronomy filters directly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography (nebulae, galaxy clusters, emission regions)\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR and mirrorless astrophotography\u003c\/li\u003e\n  \u003cli\u003eDedicated astronomy camera imaging (ZWO, QHY, Player One, Touptek, etc.)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging\u003c\/li\u003e\n  \u003cli\u003eVisual deep-sky observing with 1.25\" and 2\" eyepieces\u003c\/li\u003e\n  \u003cli\u003eModerate-payload equatorial mount imaging setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e Ships with M48×0.75 and M54×0.75 photographic adapters. DSLR users need a standard camera T-ring. The built-in 2\" filter thread on the extension tube accepts standard astronomy filters. Most dedicated astronomy cameras with M54 or M48 nose threads connect directly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMount compatibility:\u003c\/strong\u003e The 300mm Vixen-style dovetail plate fits any Vixen-compatible saddle. The 1\/4\" and 3\/8\" holes allow direct tripod mounting. At 6.76kg gross, mounts rated for 10–12kg imaging payload are appropriate — such as the Sky-Watcher HEQ5 Pro, iOptron CEM40, ZWO AM5, or equivalent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e The Askar 111F 0.74× Reducer (sold separately) drops the system to approximately f\/5.1 (566mm focal length) for wider-field, faster imaging. An electronic focuser motor is available separately for remote focus control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGuiding:\u003c\/strong\u003e Two finder bases on the focuser body plus the handle slot provide three guide scope mounting positions. Compatible with Askar 52mm guide scope series and other standard guide scopes.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ef\/6.9 is not ultrafast\u003c\/strong\u003e — for very faint targets in light-polluted skies, the optional 0.74× reducer (sold separately) is recommended.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot ideal for planetary or lunar imaging\u003c\/strong\u003e — optimized for wide-field deep sky, not high-magnification planetary detail.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo electronic focuser included\u003c\/strong\u003e — motorized focus requires a separately purchased focuser motor.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot a beginner instrument\u003c\/strong\u003e — most appropriate for users with an equatorial mount and some astrophotography experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a field flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The self-flattening quadruplet design produces a flat field natively across the 44mm image circle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it cover full-frame sensors?\u003c\/strong\u003e\u003cbr\u003eYes. The 44mm image circle covers all current full-frame DSLR, mirrorless, and dedicated astronomy camera sensors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003eA mount rated for 10–12kg payload is recommended for imaging. Examples: Sky-Watcher HEQ5 Pro, iOptron CEM40, ZWO AM5N, or equivalent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the 111F compare to the 91F?\u003c\/strong\u003e\u003cbr\u003eThe 111F has 22% more aperture (111mm vs 91mm), a slightly faster native ratio (f\/6.9 vs f\/6.7), and a longer 766mm focal length vs 609mm. It is heavier (5.74kg net vs 3.92kg) and does not include eyepieces or an erecting prism in the standard package. The 91F is better for users with smaller mounts or who want a more complete visual\/travel kit out of the box.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the 111F compare to the 131F?\u003c\/strong\u003e\u003cbr\u003eThe 131F has more aperture (131mm) and a longer focal length (983mm) but is significantly heavier (7.9kg net) and requires a heavier-duty mount. The 111F is the better choice for users with mid-weight mounts who still want full-frame coverage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a reducer available?\u003c\/strong\u003e\u003cbr\u003eYes. The Askar 111F 0.74× Reducer (sold separately) reduces the system to f\/5.1 and 566mm focal length.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar 111F Flat-Field\u003c\/strong\u003e for astrophotographers who want a meaningful aperture upgrade over a 60–91mm instrument while keeping the system weight manageable for mid-range equatorial mounts. The self-flattening design eliminates the most common source of setup complexity for newer imagers, and the full-frame image circle means the optics will not limit you as your camera equipment evolves. It is a strong all-round deep-sky imaging platform at a competitive price point in the 100–120mm aperture class.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\n\u003cp\u003eThe following diagrams are provided for customers who wish to review the optical performance data, mechanical dimensions, and connection specifications of the Askar 111F before purchasing or setting up the instrument.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/454295a5-664d-43a2-9b8e-1b65a715a593.jpg\" alt=\"Askar 111F Product Size Diagram - tube length and mechanical dimensions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/39e3d53e-59fa-4ba9-bb6a-d46e147a0f0b.jpg\" alt=\"Askar 111F Product Size Diagram - additional dimension reference\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d77cda7c-afa8-4052-9c88-e7ad4d7a8ac1.jpg\" alt=\"Askar 111F Connection Diagram - photographic adapter and camera thread connection details\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/37f4ab88-3b9a-4c66-88f2-1674920272bb.jpg\" alt=\"Askar 111F Locking Screw Position Diagram - focuser and adapter lock locations\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1acc5643-0b25-4789-a1b5-11c889ba55e2.jpg\" alt=\"Askar 111F Electronic Focuser Assembly Diagram - motor mounting instructions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d7da6964-5f63-4a1b-add1-645d41eba620.jpg\" alt=\"Askar 111F Optical Path Diagram - quadruplet lens group and light path layout\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d3529dd7-ba1a-4553-af4b-787d4e747dc3.jpg\" alt=\"Askar 111F Spot Diagram - star spot performance across full-frame image circle\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154393686127,"sku":"111F-FLAT-FIELD","price":2098.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ee178691-b536-4f04-81d1-9acd6a365330.png?v=1779667136"},{"product_id":"askar-91f-flat-field-quadruplet-astrograph","title":"Askar 91F Flat-Field Quadruplet Astrograph","description":"\u003ch2\u003eAskar 91F Flat-Field Quadruplet Astrograph — 91mm f\/6.7\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar 91F Flat-Field\u003c\/strong\u003e is a 91mm aperture, 609mm focal length quadruplet APO astrograph and the most accessible telescope in the Askar F Series. At a native f\/6.7 focal ratio, it combines a compact and lightweight build — just 3.92kg OTA — with the same self-flattening, full-frame-capable optical performance that defines the entire F Series lineup.\u003c\/p\u003e\n\n\u003cp\u003eThe four-element optical design (three front elements, one rear correcting element) includes one piece of ED glass to suppress chromatic aberration. The system natively supports a 44mm image circle covering full-frame sensors with no external flattener required and no backfocus calculation needed. Simply attach your camera, achieve focus, and begin imaging.\u003c\/p\u003e\n\n\u003cp\u003eThe 91F is the most complete package in the F Series out of the box: in addition to the standard photographic extension tube with M48×0.75 and M54×0.75 adapters, it ships with an 8mm eyepiece (76×), a 20mm eyepiece (30×), and a 1.25\" 45° erecting prism — making it immediately ready for visual observing, birdwatching, and terrestrial use the moment it arrives.\u003c\/p\u003e\n\n\u003cp\u003eThe mechanical package includes a 3\" R\u0026amp;P focuser with 1:10 fine adjustment, a 360° camera rotator, a retractable dew shield, a matting-felt-lined tube interior, two finder bases on the focuser plus a handle slot, and a 230mm Vixen-style dovetail plate with 1\/4\" and 3\/8\" tripod holes. The exterior features the signature Askar blue-and-white CNC-machined finish.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner to intermediate astrophotographers\u003c\/strong\u003e who want a full-frame-capable, self-flattening instrument with no setup complexity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTravel and portable rig users\u003c\/strong\u003e — at 3.92kg OTA and a maximum length under 640mm with dew shield extended, it pairs well with compact travel mounts like the ZWO AM5, iOptron HEM27, Sky-Watcher Star Adventurer GTi, and similar.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose visual and imaging users\u003c\/strong\u003e — the included eyepiece and erecting prism kit makes it ready for daytime spotting and nighttime visual observing right out of the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBirders and nature observers\u003c\/strong\u003e looking for a versatile, optically excellent spotting scope that doubles as an astrograph.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers on smaller mounts\u003c\/strong\u003e who need a flat-field full-frame instrument within a tight weight budget.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar 91F?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-flattening quadruplet\u003c\/strong\u003e — no separate flattener, no backfocus calculation. Attach and shoot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e44mm full-frame image circle\u003c\/strong\u003e — covers all modern full-frame DSLR, mirrorless, and dedicated astronomy sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightest F Series telescope\u003c\/strong\u003e — at 3.92kg OTA (4.52kg gross), suitable for the widest range of mounts including travel-grade systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMost complete standard package\u003c\/strong\u003e — the 91F includes 8mm and 20mm eyepieces plus a 1.25\" erecting prism, unlike the larger F Series models.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eED glass chromatic control\u003c\/strong\u003e — one ED element minimizes false colour across the full image field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 360° rotator\u003c\/strong\u003e — frame targets at any angle without repositioning the mount.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatting felt interior\u003c\/strong\u003e — stray light absorption lining inside the tube for better contrast.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e — compact for transport, extended for use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTripod-mountable dovetail\u003c\/strong\u003e — 230mm Vixen plate with 1\/4\" and 3\/8\" screw holes for direct tripod use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography (nebulae, star clusters, large emission regions)\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR, mirrorless, and dedicated astronomy camera imaging\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging (built-in 2\" filter thread)\u003c\/li\u003e\n  \u003cli\u003eVisual deep-sky observing with included 8mm and 20mm eyepieces\u003c\/li\u003e\n  \u003cli\u003eBirdwatching, wildlife, and terrestrial spotting\u003c\/li\u003e\n  \u003cli\u003eTravel and portable mount setups\u003c\/li\u003e\n  \u003cli\u003eBeginner astrophotography and astronomy outreach\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e Ships with M48×0.75 and M54×0.75 adapters. DSLR users need a standard T-ring. Dedicated astronomy cameras with M54 or M48 connections attach directly. Built-in 2\" filter thread on the extension tube accepts standard astronomy filters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMount compatibility:\u003c\/strong\u003e The 230mm Vixen dovetail fits any Vixen-compatible saddle. The 1\/4\" and 3\/8\" tripod holes allow direct tripod mounting without a mount at all. At 4.52kg gross, compatible with lightweight mounts including ZWO AM5, iOptron HEM27, Sky-Watcher HEQ5, Star Adventurer GTi, and similar. A mount rated for at least 6–8kg payload is recommended for imaging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e The Askar 91F 0.75× Reducer (sold separately) brings the system to f\/5 and 455mm focal length for wider-field, faster imaging. An electronic focuser motor is available separately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIncluded visual accessories:\u003c\/strong\u003e 8mm eyepiece (76× magnification), 20mm eyepiece (30× magnification), and 1.25\" 45° erecting prism for correct-image terrestrial and astronomical viewing.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmaller aperture than 111F\/131F\u003c\/strong\u003e — 91mm collects less light than larger F Series instruments; exposures will be longer on faint targets. Consider the optional 0.75× reducer or a larger telescope for very faint, small-scale objects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ef\/6.7 is moderate speed\u003c\/strong\u003e — not ultrafast; the optional 0.75× reducer (sold separately) brings it to f\/5 for shorter exposures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot ideal for planetary imaging\u003c\/strong\u003e — the 609mm focal length is optimized for wide-field deep sky, not high-magnification planetary detail.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo electronic focuser included\u003c\/strong\u003e — motorized focus requires a separately purchased motor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The self-flattening quadruplet produces a flat field across the 44mm image circle natively.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it cover full-frame sensors?\u003c\/strong\u003e\u003cbr\u003eYes. The 44mm image circle fully covers all current full-frame DSLR, mirrorless, and dedicated astronomy cameras.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs it good for beginners?\u003c\/strong\u003e\u003cbr\u003eYes — it is the most beginner-friendly instrument in the F Series. The included eyepieces and erecting prism mean it can be used for visual observing immediately, and the self-flattening design removes the most common astrophotography setup hurdle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003eFor imaging, a mount rated for at least 6–8kg payload is recommended. For visual use only, it can be used on a camera tripod via the built-in tripod screw holes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a reducer available?\u003c\/strong\u003e\u003cbr\u003eYes. The Askar 91F 0.75× Reducer (sold separately) reduces the system to f\/5 and 455mm focal length.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does it compare to the 111F?\u003c\/strong\u003e\u003cbr\u003eThe 91F is lighter (3.92kg vs 5.74kg), shorter, includes eyepieces and an erecting prism, and is better suited for smaller mounts and travel. The 111F has more aperture and a longer focal length for more resolution on smaller targets.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for birdwatching?\u003c\/strong\u003e\u003cbr\u003eYes. The included 20mm eyepiece and erecting prism give a correct-image view for terrestrial spotting. It functions as an excellent spotting scope in addition to its astronomy role.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar 91F Flat-Field\u003c\/strong\u003e as the best entry point into the F Series for most buyers. It is the lightest, most portable, and most complete package — ready for visual observing, birdwatching, and astrophotography the moment it arrives. If you are using a compact or travel mount, or you want one instrument that handles astronomy and daytime optics equally well, the 91F is an outstanding choice.\u003c\/p\u003e\n\n\u003cp\u003eIf you need more aperture for fainter targets or higher resolution and have a heavier mount, consider the 111F or 131F. But for first-time F Series buyers and travel users, the 91F delivers the full F Series experience in the most accessible package.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\n\u003cp\u003eThe following optical and mechanical diagrams are provided for customers who wish to review the Askar 91F’s optical performance, mechanical dimensions, and connection specifications.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6d3433e9-069f-4e8f-8fe5-f64659c95b6e.jpg\" alt=\"Askar 91F Product Size Diagram - tube length and mechanical dimensions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d8b7fe34-d5d0-4555-bbc9-ead405dfacf2.jpg\" alt=\"Askar 91F Connection Diagram - photographic adapter and camera thread connection details\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/37f4ab88-3b9a-4c66-88f2-1674920272bb.jpg\" alt=\"Askar 91F Locking Screw Position Diagram - focuser and adapter lock locations\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1acc5643-0b25-4789-a1b5-11c889ba55e2.jpg\" alt=\"Askar 91F Electronic Focuser Assembly Diagram - motor mounting instructions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/fabf66d1-bbc7-47d2-95d9-13cbfcf8d59e.jpg\" alt=\"Askar 91F Optical Path Diagram - quadruplet lens group and light path layout\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/9204b293-5dea-45bd-a45d-91db45661241.jpg\" alt=\"Askar 91F Spot Diagram - star spot performance across the full-frame image circle\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154396504175,"sku":"91F-FLAT-FIELD","price":1398.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/4a0aa511-087e-46a0-897a-b099e77a876e.png_560xaf.webp?v=1779668266"},{"product_id":"askar-60f-flat-field-quadruplet-astrograph","title":"Askar 60F Flat-Field Quadruplet Astrograph","description":"\u003ch2\u003eAskar 60F Flat-Field Quadruplet Astrograph — 60mm f\/6.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar 60F Flat-Field\u003c\/strong\u003e is the most compact and portable telescope in the Askar F Series — a 60mm aperture, 408mm focal length quadruplet APO astrograph that weighs just 2.36kg and measures as little as 289mm in total length with the dew shield retracted. Despite its small footprint, it delivers the same self-flattening full-frame performance that defines the entire F Series: a 44mm image circle covering full-frame sensors, no separate flattener required, and no backfocus calculation needed.\u003c\/p\u003e\n\n\u003cp\u003eThe quadruplet optical design (three front elements, one rear correcting element) includes one piece of ED glass to control chromatic aberration. A 2.4\" rack-and-pinion focuser with 1:10 fine adjustment and a 360° rotator handles the imaging side. The matting-felt-lined tube interior reduces stray light, and the signature Askar blue-and-white CNC finish keeps the aesthetic consistent with the rest of the F Series lineup.\u003c\/p\u003e\n\n\u003cp\u003eThe 60F ships with a photographic extension tube featuring a built-in 2\" filter thread and M48×0.75 and M54×0.75 adapters, a 230mm Vixen-style dovetail plate with 1\/4\" and 3\/8\" tripod screw holes (for direct tripod mounting without any mount), tube rings, and a handle. Two finder base positions on the focuser body plus the handle slot provide three guide scope or accessory mounting positions.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTravel and portable rig astrophotographers\u003c\/strong\u003e who need a full-featured, full-frame-capable astrograph in the smallest and lightest possible package.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner to intermediate astrophotographers\u003c\/strong\u003e who want to start with a self-flattening instrument and remove the complexity of external flatteners from day one.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhotographers using ultralight mounts\u003c\/strong\u003e such as the ZWO AM5, iOptron HEM27, Sky-Watcher Star Adventurer GTi, or any mount where weight is a critical constraint.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose users\u003c\/strong\u003e wanting a compact refractor for wide-field visual observing with standard 1.25\" and 2\" eyepieces, as well as astrophotography.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAstrophotographers on a budget\u003c\/strong\u003e who want the F Series self-flattening design at the most accessible price point in the lineup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar 60F?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmallest F Series astrograph\u003c\/strong\u003e — 289mm body length with dew shield retracted and 2.36kg OTA weight; the most portable full-frame-capable astrograph in the Askar lineup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-flattening quadruplet\u003c\/strong\u003e — no separate flattener needed, no backfocus calculation. Attach and shoot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e44mm full-frame image circle\u003c\/strong\u003e — covers all modern full-frame DSLR, mirrorless, and dedicated astronomy camera sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eED glass chromatic control\u003c\/strong\u003e — one ED element in the quadruplet group suppresses false colour across the full image field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 360° rotator\u003c\/strong\u003e — frame targets at any angle without repositioning the mount.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.4\" R\u0026amp;P focuser with 1:10 fine adjustment\u003c\/strong\u003e — rigid, low-flex focuser with anti-slip fine adjustment cover.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect tripod mounting\u003c\/strong\u003e — the 230mm Vixen dovetail includes 1\/4\" and 3\/8\" screw holes so the 60F can be used on a camera tripod with no equatorial mount.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatting felt tube interior\u003c\/strong\u003e — stray light absorption lining for better contrast.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e — compact for transport; extends for field use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTravel and portable astrophotography on ultralight mounts\u003c\/li\u003e\n  \u003cli\u003eWide-field deep-sky imaging (large nebulae, star clusters, Milky Way fields)\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR, mirrorless, and dedicated astronomy camera imaging\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging\u003c\/li\u003e\n  \u003cli\u003eWide-field visual observing with 1.25\" and 2\" eyepieces\u003c\/li\u003e\n  \u003cli\u003eBeginner and entry-level astrophotography\u003c\/li\u003e\n  \u003cli\u003eTripod-mounted solar system observing with appropriate solar filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e Ships with M48×0.75 and M54×0.75 photographic adapters. DSLR users need a standard T-ring. Dedicated astronomy cameras with M54 or M48 nose threads connect directly. The built-in 2\" filter thread accepts standard astronomy filters. Note: the 60F uses M64×0.75 as the primary rear-end thread (vs M64×1 on the 91F), so verify adapter compatibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMount compatibility:\u003c\/strong\u003e The 230mm Vixen dovetail fits any Vixen-compatible saddle. The built-in 1\/4\" and 3\/8\" screw holes allow direct tripod use. At 2.86kg gross, compatible with the full range of ultralight mounts — a mount rated for at least 4–6kg payload is recommended for imaging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e The Askar 60F 0.75× Reducer (sold separately) reduces the system to f\/5.1 and 311mm focal length for an even wider field and faster exposures. An electronic focuser motor is available separately for remote focus control.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmaller aperture than other F Series models\u003c\/strong\u003e — 60mm collects significantly less light than the 91F or larger models. Exposures will be longer on faint targets. The optional 0.75× reducer helps offset this.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.4\" focuser (not 3\")\u003c\/strong\u003e — the 60F uses a 2.4\" focuser rather than the 3\" found on the 91F and above. Fully adequate for the optical format, but worth noting for users accustomed to 3\" systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for planetary imaging\u003c\/strong\u003e — the 408mm focal length is optimized for wide-field deep sky, not high-magnification planetary work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo electronic focuser included\u003c\/strong\u003e — motorized focus requires a separately purchased motor.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo eyepieces included\u003c\/strong\u003e — unlike the 91F, the 60F does not ship with eyepieces. A 1.25\" or 2\" eyepiece is required for visual use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The self-flattening quadruplet produces a flat field across the 44mm image circle natively.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it cover full-frame sensors?\u003c\/strong\u003e\u003cbr\u003eYes. The 44mm image circle covers all modern full-frame DSLR, mirrorless, and dedicated astronomy sensors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs it good for beginners?\u003c\/strong\u003e\u003cbr\u003eYes — the low weight, simple setup, and self-flattening design make it one of the most beginner-friendly astrographs available. It can also be used on a camera tripod for simple visual observing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the lightest mount that can carry it for imaging?\u003c\/strong\u003e\u003cbr\u003eAt 2.86kg gross, even the lightest equatorial tracking mounts — including the Sky-Watcher Star Adventurer GTi, ZWO AM5, iOptron SkyGuider Pro — can carry it for astrophotography.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a reducer available?\u003c\/strong\u003e\u003cbr\u003eYes. The Askar 60F 0.75× Reducer (sold separately) reduces the system to f\/5.1 and 311mm focal length.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does it compare to the 91F?\u003c\/strong\u003e\u003cbr\u003eThe 60F is lighter (2.36kg vs 3.92kg), shorter (289mm vs 513mm body), and less expensive. The 91F has more aperture (91mm vs 60mm), a longer focal length (609mm vs 408mm), and includes eyepieces and an erecting prism in the standard package. Choose the 60F for maximum portability; the 91F for more aperture and a more complete out-of-the-box kit.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar 60F Flat-Field\u003c\/strong\u003e for anyone who prioritizes portability above all else without sacrificing flat-field, full-frame optical quality. It is the ideal grab-and-go astrograph for travel, star parties, and ultralight mount setups — and one of the best entry points into serious astrophotography at a highly accessible price. If you need more aperture and aren’t constrained by weight or mount payload, the 91F or 111F will serve you better. But for true portability with no optical compromises, the 60F is in a class of its own in the F Series.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\n\u003cp\u003eThe following optical and mechanical diagrams are provided for customers who wish to review the Askar 60F’s optical performance, mechanical dimensions, connection specifications, and assembly details.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4da5ff7b-ecc0-4710-8946-ed19031fbba6.jpg\" alt=\"Askar 60F Product Size Diagram - tube length and mechanical dimensions with dew shield contracted and extended\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3a4ccbd6-82bd-426b-a686-67e2262fa975.jpg\" alt=\"Askar 60F Connection Diagram - photographic adapter and camera thread connection details\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a859e8f9-aad8-44ea-97e7-b667b77bb291.jpg\" alt=\"Askar 60F Locking Screw Position Diagram - focuser and adapter lock screw locations\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ba0e401b-24ed-4669-a3e2-00786aa1f7ef.jpg\" alt=\"Askar 60F Electronic Focuser Assembly Diagram - motorized focuser motor mounting instructions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4e404fdd-a0cd-4dee-94a8-dd323ee7b67b.jpg\" alt=\"Askar 60F Optical Path Diagram - quadruplet lens group and light path layout\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ce20716a-504a-4d0b-8479-0b5157d2bf41.jpg\" alt=\"Askar 60F Spot Diagram - star spot performance across the full-frame 44mm image circle\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154399879279,"sku":"60F-FLAT-FIELD","price":698.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/a3dac66d-7f5a-40dd-b940-f107973989cf.png?v=1779667843"},{"product_id":"askar-sqa55-quintuplet-petzval-astrograph-55mm-f-4-8","title":"Askar SQA55 Quintuplet Petzval Astrograph 55mm f\/4.8","description":"\u003ch2\u003eAskar SQA55 Quintuplet Petzval Astrograph — 55mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA55\u003c\/strong\u003e is a 55mm aperture, 264mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph designed for astrophotographers who demand sharp, flat full-frame star fields with the speed and portability to image anywhere. The optical design incorporates one piece of SD glass and one piece of ED glass to suppress chromatic aberration across the entire 44mm image circle, producing clean round stars from centre to corner on full-frame and APS-C sensors.\u003c\/p\u003e\n\n\u003cp\u003eAs a Petzval-design telescope, the SQA55 does not require a separate flattener — the five-element optical group delivers a flat field natively. A manual focus ring with an adjustable dew shield allows precise focus control in the field, and the 14-blade aperture diaphragm provides smooth out-of-focus backgrounds when the aperture is stopped down for daytime or landscape photography.\u003c\/p\u003e\n\n\u003cp\u003eThe SQA55 ships with a military-grade waterproof carrying case — one of the only astrographs in this aperture class to do so — making it a genuinely travel-ready system for remote dark-sky sites, star parties, and expeditions.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTravel and portable-mount astrophotographers\u003c\/strong\u003e who need a full-frame-capable astrograph in the smallest, lightest, most rugged package available.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermediate to advanced astrophotographers\u003c\/strong\u003e who want a fast, high-quality Petzval design without adding a flattener to their imaging train.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky imagers\u003c\/strong\u003e targeting large nebulae, star clusters, and Milky Way fields that benefit from 264mm focal length and f\/4.8 speed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-use photographers\u003c\/strong\u003e who also want a high-quality telephoto lens for landscape and daytime photography.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImagers in light-polluted skies\u003c\/strong\u003e where the f\/4.8 speed dramatically shortens required exposure times.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA55?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuintuplet Petzval with SD + ED glass\u003c\/strong\u003e — flat-field, colour-corrected performance across the full 44mm image circle at f\/4.8 with no external flattener required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.8 focal ratio\u003c\/strong\u003e — collects light significantly faster than f\/6 or f\/7 instruments, cutting exposure times for faint nebulae and galaxies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMilitary-grade waterproof case included\u003c\/strong\u003e — the only astrograph in this class that ships with expedition-grade protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e14-blade aperture iris\u003c\/strong\u003e — adjustable from f\/4.8 to f\/22 for daytime photography with smooth, rounded bokeh.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose design\u003c\/strong\u003e — usable as a high-quality telephoto lens for landscape, wildlife, and event photography.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame 44mm image circle\u003c\/strong\u003e — covers all modern full-frame DSLR, mirrorless, and dedicated astronomy cameras.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact and lightweight at 1.84kg OTA\u003c\/strong\u003e — compatible with ultralight tracking mounts for travel imaging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-release accessory system\u003c\/strong\u003e — four quick-release bases on the tube body accept the optional quick-release handle bar and accessories tool-free.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography (nebulae, star clusters, Milky Way)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging from light-polluted sites\u003c\/li\u003e\n  \u003cli\u003eTravel and remote dark-sky imaging on ultralight mounts\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR, mirrorless, and dedicated astronomy camera imaging\u003c\/li\u003e\n  \u003cli\u003eLandscape and telephoto photography (daytime use with aperture iris)\u003c\/li\u003e\n  \u003cli\u003ePortable guided and unguided wide-field imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connection:\u003c\/strong\u003e M48×0.75 rear thread with built-in M48×0.75 2\" filter thread. Compatible with standard T-rings and M48 camera adapters. The recommended back focus connection distance is 55mm (range: 50–60mm). DSLR and mirrorless cameras connect via a T-ring; dedicated astronomy cameras with M48 nosepieces connect directly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter compatibility:\u003c\/strong\u003e M67 front thread (67mm screw-in filters); M48×0.75 rear thread accepts 2\" astronomy filters directly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA55 Quick-Release Handle Bar, SQA55 AF Kit (electronic focuser adapter, sold separately).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot compatible\u003c\/strong\u003e with the SQA Series Handle Bar or SQA Series Heightening Section — those accessories require a different mounting interface and are designed for the SQA70 and larger models.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManual focus only\u003c\/strong\u003e — the SQA55 does not have a motorized focuser. An electronic focuser requires the optional SQA55 AF Kit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — the SQA55 has no eyepiece holder or visual adapter. It is a dedicated photographic instrument.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e55mm back focus must be respected\u003c\/strong\u003e — the specified 50–60mm back focus range is critical for field flatness. Spacers outside this range will degrade corner star quality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosest focus distance 5m\u003c\/strong\u003e — the SQA55 cannot focus on subjects closer than 5 metres, limiting its terrestrial photography applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo dovetail plate included\u003c\/strong\u003e — the SQA55 ships with the OTA, handle, and carrying case only. A dovetail plate or tube rings are required for mounting on a standard saddle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The quintuplet Petzval design provides a flat field natively across the full 44mm image circle at f\/4.8.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003eNo. The SQA55 is a dedicated imaging instrument with no eyepiece holder.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the back focus?\u003c\/strong\u003e\u003cbr\u003e55mm recommended, with a usable range of 50–60mm from the base of the M48×0.75 male thread.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs a motorized focuser available?\u003c\/strong\u003e\u003cbr\u003eYes — the optional SQA55 AF Kit adapts virtually any brand of electronic focuser motor to the SQA55's focus ring, sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it work as a camera lens?\u003c\/strong\u003e\u003cbr\u003eYes, with the aperture iris set between f\/4.8 and f\/22. The closest focus distance is 5m, so it is best suited for landscape, astroscape, and distant subjects rather than close-up photography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003eAt 2.18kg gross, any equatorial tracking mount with at least a 4–6kg payload rating works well for imaging, including ultralight mounts like the ZWO AM5, iOptron HEM27, or Sky-Watcher Star Adventurer GTi.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar SQA55\u003c\/strong\u003e for any astrophotographer who values portability without optical compromise. The f\/4.8 speed, flat-field Petzval design, and military-grade carrying case make it one of the most capable travel astrographs available at any price point. If you regularly image from remote locations, dark-sky parks, or travel internationally for astrophotography, the SQA55 delivers professional-grade results from a system that fits in carry-on luggage. For larger aperture or longer focal length, consider the SQA70 or SQA85.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following diagrams are provided for customers who wish to review the mechanical dimensions, camera connection specifications, and electronic focuser assembly details for the Askar SQA55.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ad04c525-150e-432d-9d40-029448807e34.jpg?vf=B7gH3s\" alt=\"Askar SQA55 Product Size Diagram - tube and dew shield dimensions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1e3ab7f8-e65b-4607-83e8-a7797fbe3809.jpg?vf=B7gH3s\" alt=\"Askar SQA55 Connection Diagram - M48 rear adapter and camera connection details\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6e54949f-2222-49c1-97bf-44f8e520df8a.jpg?vf=B7gH3s\" alt=\"Askar SQA55 AF Kit Assembly Diagram - electronic focuser motor installation on SQA55 focus ring\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154403614831,"sku":"SQA55-PETZVAL","price":1113.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/855d05fd-bdbb-47f2-ab27-4f90b22a2dd3.png?v=1779668681"},{"product_id":"askar-sqa70-quintuplet-petzval-astrograph-70mm-f-4-8","title":"Askar SQA70 Quintuplet Petzval Astrograph 70mm f\/4.8","description":"\u003ch2\u003eAskar SQA70 Quintuplet Petzval Astrograph — 70mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA70\u003c\/strong\u003e is a 70mm aperture, 336mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph delivering sharp, flat full-frame star fields across the 44mm image circle. Two pieces of ED glass in the quintuplet optical group control chromatic aberration across the full field, and the Petzval design eliminates the need for an external flattener. With 27% more aperture than the SQA55 and a 336mm focal length that suits both wide-field nebulae and moderately framed galaxies, the SQA70 sits at a versatile middle position in the SQA Series lineup.\u003c\/p\u003e\n\n\u003cp\u003eThe rear adapter accepts M42, M48 (with built-in 2\" filter thread), and M54 connections — giving the SQA70 the widest camera compatibility in the SQA Series. The dew shield retracts for transport, and the OTA ships with an Oxford cloth case. The optional SQA Series Handle Bar and Heightening Section are both compatible with the SQA70.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermediate to advanced astrophotographers\u003c\/strong\u003e upgrading from smaller astrographs who want more aperture and slightly longer reach than the SQA55.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame imagers\u003c\/strong\u003e who want a versatile focal length that works for both large emission nebulae and framing individual galaxies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAstrophotographers on mid-payload mounts\u003c\/strong\u003e — at 3.5kg gross, the SQA70 works well on mounts rated for 6–10kg payload.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose users\u003c\/strong\u003e wanting a fast Petzval for deep-sky imaging that can also serve as a telephoto for daytime photography (no aperture iris — fixed f\/4.8).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA70?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuintuplet Petzval with 2× ED glass\u003c\/strong\u003e — flat-field, well-corrected across the full 44mm image circle at f\/4.8 with no flattener needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.8\u003c\/strong\u003e — short exposure times for faint nebulae, ideal for narrowband imaging from light-polluted skies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidest camera compatibility in the SQA Series\u003c\/strong\u003e — M42, M48, and M54 rear adapters included.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile focal length at 336mm\u003c\/strong\u003e — well-suited to large nebulae, galaxy groups, and Milky Way star fields.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad back-focus range (37–68mm)\u003c\/strong\u003e — accommodates OAGs, filter drawers, and other accessories in the imaging train.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional Handle Bar and Heightening Section compatible\u003c\/strong\u003e — easy to add carry handle and OTA clearance accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWide-field and mid-focal-length deep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eLarge emission and reflection nebulae, galaxy groups, star clusters\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR, mirrorless, and dedicated astronomy camera imaging\u003c\/li\u003e\n  \u003cli\u003eGuided and unguided portable setups on mid-payload mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e M42, M48 (with built-in M48×0.75 2\" filter thread), and M54 adapters included. Recommended back focus 55mm; usable range 37–68mm from the rear adapter base.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA Series Handle Bar, SQA Series Heightening Section (both compatible). An electronic focuser motor can be fitted; contact us for the correct adapter for your focuser brand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMount requirements:\u003c\/strong\u003e At 3.5kg gross, a mount with at least 6–8kg payload is recommended for stable imaging.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo aperture iris\u003c\/strong\u003e — the SQA70 is fixed at f\/4.8. It cannot be stopped down for daytime photography the way the SQA55 can.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — no eyepiece holder or visual adapter is included or available.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic focuser not included\u003c\/strong\u003e — manual focus only; a separate motor adapter is required for automated focusing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot compatible\u003c\/strong\u003e with the SQA55 Quick-Release Handle Bar or SQA55 AF Kit — those are SQA55-specific accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The Petzval quintuplet design provides a flat field natively across 44mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SQA70 compare to the SQA55?\u003c\/strong\u003e\u003cbr\u003eThe SQA70 has more aperture (70mm vs 55mm), a longer focal length (336mm vs 264mm), and wider camera compatibility (M42\/M48\/M54 vs M48 only). The SQA55 has an aperture iris for daytime use and ships with a military waterproof case. The SQA70 is better for imaging; the SQA55 is more portable and travel-rugged.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the back focus?\u003c\/strong\u003e\u003cbr\u003e55mm recommended; 37–68mm usable range from the rear adapter base.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar SQA70\u003c\/strong\u003e for astrophotographers who want more aperture and focal length than the SQA55 while keeping the system compact and versatile. Its broad camera compatibility, wide back-focus range, and fast f\/4.8 Petzval optics make it an excellent choice for a dedicated imaging refractor on a mid-sized mount.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following diagrams cover the mechanical dimensions, camera connection specifications, locking screw positions, and electronic focuser assembly for the Askar SQA70.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/8d292646-f919-4112-bd3f-5dd0f2bf88b5.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Product Size Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3409f52b-4f6b-46f1-8352-b582287a7052.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Connection Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c5de3e75-9421-4e89-84e0-f05312ce3cb8.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Locking Screw Position Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ecf1a960-561a-4e5e-803a-f96bbd192fc5.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Electronic Focuser Assembly Diagram part 1\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/0e0ab408-fc4e-4bd9-b6fc-98ee34b536a9.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Electronic Focuser Assembly Diagram part 2\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154403909743,"sku":"SQA70-PETZVAL","price":2233.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/cc4f41c4-88c5-4e56-9324-f33223f7d5b0.jpg?v=1779668767"},{"product_id":"askar-sqa85-quintuplet-petzval-astrograph-85mm-f-4-8","title":"Askar SQA85 Quintuplet Petzval Astrograph 85mm f\/4.8","description":"\u003ch2\u003eAskar SQA85 Quintuplet Petzval Astrograph — 85mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA85\u003c\/strong\u003e is an 85mm aperture, 408mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph incorporating two pieces of SD glass for high-grade chromatic aberration correction across its full-frame image circle. As the mid-range model in the SQA Series, the SQA85 steps up from the SQA70 with a significantly larger 85mm aperture and 408mm focal length — the same focal length as the Askar 60F, but delivered at f\/4.8 vs f\/6.8, meaning dramatically faster light collection and shorter required exposures.\u003c\/p\u003e\n\n\u003cp\u003eThe Petzval optical design provides a flat field natively, eliminating the need for a separate field flattener. Rear adapter options include M48, M54, and M68, making the SQA85 compatible with medium-format astrocameras. The optional SQA Series Handle Bar and Heightening Section are compatible, and the OTA ships in an Oxford cloth carry case.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced astrophotographers\u003c\/strong\u003e seeking a large-aperture, flat-field imaging refractor at a fast focal ratio.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame and medium-format imagers\u003c\/strong\u003e who want a Petzval astrograph with M68 connection compatibility for larger sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers targeting faint nebulae and galaxies\u003c\/strong\u003e who benefit from the 85mm aperture and f\/4.8 speed to shorten total integration time significantly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAstrophotographers on medium-to-large payload mounts\u003c\/strong\u003e — at 4.62kg gross, a mount rated for at least 8–10kg is recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA85?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo pieces of SD glass\u003c\/strong\u003e — superior chromatic aberration correction compared to standard ED glass designs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.8 with 85mm aperture\u003c\/strong\u003e — significantly more light-gathering than smaller aperture or slower focal ratio alternatives.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM48, M54, and M68 rear adapters\u003c\/strong\u003e — compatible with medium-format astrocameras and the widest range of dedicated astronomy cameras.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo external flattener required\u003c\/strong\u003e — flat-field Petzval design covers the full 44mm image circle natively.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad back-focus range (40–70mm)\u003c\/strong\u003e — accommodates filters, OAGs, and accessory adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced deep-sky astrophotography (faint nebulae, galaxy fields, star-forming regions)\u003c\/li\u003e\n  \u003cli\u003eNarrowband imaging (Hα, OIII, SII) from suburban and light-polluted sites\u003c\/li\u003e\n  \u003cli\u003eFull-frame and medium-format camera imaging\u003c\/li\u003e\n  \u003cli\u003eLong-integration imaging sessions on medium-to-large equatorial mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e M48, M54, and M68 adapters included. Built-in M48×0.75 2\" filter thread. Recommended back focus 55mm; usable range 40–70mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA Series Handle Bar, SQA Series Heightening Section (both compatible). Electronic focuser motor fitting is possible with appropriate adapter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMount requirements:\u003c\/strong\u003e Minimum 8–10kg payload recommended for stable imaging with the SQA85.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — no eyepiece holder or visual adapter is available.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic focuser not included\u003c\/strong\u003e — manual focus only without a separately purchased motor adapter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRequires a capable mount\u003c\/strong\u003e — at 4.62kg gross, lightweight tracking mounts are not suitable for stable long-exposure imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SQA85 compare to the SQA70?\u003c\/strong\u003e\u003cbr\u003eThe SQA85 has 85mm vs 70mm aperture, 408mm vs 336mm focal length, SD glass vs ED glass, and M68 compatibility for larger sensors. It collects more light per unit time but requires a heavier mount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The Petzval quintuplet design provides a flat field natively.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sensors does it cover?\u003c\/strong\u003e\u003cbr\u003eThe 44mm image circle covers all full-frame sensors. M68 adapters allow connection to medium-format astrocameras up to 55mm diagonal.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, the \u003cstrong\u003eAskar SQA85\u003c\/strong\u003e is our recommendation for advanced astrophotographers ready to step up to a larger-aperture, faster Petzval system. The two pieces of SD glass, M68 adapter compatibility, and f\/4.8 speed make it an excellent choice for serious narrowband and broadband imaging on a mid-to-large equatorial mount.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/94dac034-2489-4eea-b0a7-1eb07dbebac1.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Product Size Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3ebdb692-2464-4f34-a8ea-5e2fe2b05a40.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Connection Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/65b887ac-8ae3-4bbb-82e8-582719bd009d.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Locking Screw Position Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/41845f58-0a1b-4c7e-a55a-304511b3d947.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Electronic Focuser Assembly Diagram part 1\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/e6f74d23-8648-4887-aae9-f6a0767a384d.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Electronic Focuser Assembly Diagram part 2\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154404073583,"sku":"SQA85-PETZVAL","price":3353.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/77765394-ec4f-4c6a-88e7-8849461b2e13.png?v=1779668845"},{"product_id":"askar-sqa106-quintuplet-petzval-astrograph-106mm-f-4-8","title":"Askar SQA106 Quintuplet Petzval Astrograph 106mm f\/4.8","description":"\u003ch2\u003eAskar SQA106 Quintuplet Petzval Astrograph — 106mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA106\u003c\/strong\u003e is a 106mm aperture, 509mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph with two pieces of SD glass. As the larger of the two medium-format-capable SQA models, the SQA106 delivers a 55mm image circle that covers medium-format astrocameras such as the QHY600 and ZWO ASI6200, as well as all full-frame sensors. Its 509mm focal length at f\/4.8 is well-suited to framing individual galaxies, compact nebulae, and star-forming regions that benefit from moderate magnification with fast light collection.\u003c\/p\u003e\n\n\u003cp\u003eRear adapter options include M48, M54, and M68. The optional SQA Series Handle Bar and Heightening Section are both compatible. The OTA ships with an Oxford cloth case.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced astrophotographers\u003c\/strong\u003e with medium-to-large equatorial mounts seeking the highest-aperture fast Petzval refractor in the SQA Series below the SQA130.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium-format imagers\u003c\/strong\u003e using cameras with sensors up to 55mm diagonal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers targeting compact or moderately sized objects\u003c\/strong\u003e where a 509mm focal length provides more framing detail than wider systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSerious imagers\u003c\/strong\u003e who need M68 compatibility for maximum sensor coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA106?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e106mm aperture at f\/4.8\u003c\/strong\u003e — the largest aperture fast Petzval astrograph in the SQA Series before the flagship SQA130.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium-format 55mm image circle\u003c\/strong\u003e — covers APS-C, full-frame (44mm), and medium-format sensors up to 55mm diagonal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo pieces of SD glass\u003c\/strong\u003e — premium chromatic correction for clean star colour across the entire field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e509mm focal length\u003c\/strong\u003e — versatile for galaxy clusters, compact nebulae, and detailed wide-field imaging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad back-focus range (48–78mm)\u003c\/strong\u003e — accommodates OAGs, filter drawers, and spacers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced deep-sky astrophotography (galaxies, planetary nebulae, star clusters)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband imaging on large equatorial mounts\u003c\/li\u003e\n  \u003cli\u003eMedium-format astrocamera imaging\u003c\/li\u003e\n  \u003cli\u003eLong-integration sessions requiring maximum aperture efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e M48, M54, and M68 adapters included. Recommended back focus 55mm; usable range 48–78mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA Series Handle Bar, SQA Series Heightening Section.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMount requirements:\u003c\/strong\u003e At 8.12kg gross, a mount rated for at least 12–15kg payload is recommended.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavier system\u003c\/strong\u003e — at 8.12kg gross, requires a substantial equatorial mount. Not suitable for lightweight tracking mounts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — no eyepiece holder or visual adapter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic focuser not included\u003c\/strong\u003e — requires a separately purchased motor adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SQA106 differ from the SQA85?\u003c\/strong\u003e\u003cbr\u003eThe SQA106 has 106mm vs 85mm aperture, 509mm vs 408mm focal length, and a larger 55mm image circle vs 44mm. It covers medium-format sensors and provides more detail on compact objects but requires a heavier mount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sensors does it cover?\u003c\/strong\u003e\u003cbr\u003eUp to 55mm diagonal — covers APS-C, full-frame (44mm), and medium-format cameras such as the QHY600M, ZWO ASI6200, and similar.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar SQA106\u003c\/strong\u003e for advanced astrophotographers on capable mounts who want to step up to a larger aperture, longer focal length Petzval system with medium-format coverage. If your mount can handle the weight, the SQA106 delivers the best combination of speed, aperture, and sensor coverage in the SQA Series before the flagship SQA130.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/781d6501-472e-47d0-a857-87ac0595cb7e.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Product Size Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6054cd08-1ef2-4216-ab11-03c3e751632c.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Connection Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a07f750f-28e5-40f9-b02a-a58bb523ae21.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Locking Screw Position Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c1beb3c6-1947-4f0f-9922-265ec2103f99.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Electronic Focuser Assembly Diagram part 1\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/60137c2e-6cfe-441e-9a53-547241935d8c.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Electronic Focuser Assembly Diagram part 2\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154404171887,"sku":"SQA106-PETZVAL","price":4753.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/da1939c1-188a-4d4b-9147-ace5a3276b88.png?v=1779668921"},{"product_id":"askar-sqa130-quintuplet-petzval-astrograph-130mm-f-4-8","title":"Askar SQA130 Quintuplet Petzval Astrograph 130mm f\/4.8","description":"\u003ch2\u003eAskar SQA130 Quintuplet Petzval Astrograph — 130mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA130\u003c\/strong\u003e is the flagship of the SQA Series — a 130mm aperture, 624mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph built for serious deep-sky astrophotographers who demand the maximum combination of aperture, focal length, and speed in a Petzval-design refractor. Two pieces of SD glass provide premium chromatic correction, and the 55mm medium-format image circle covers sensors up to 55mm diagonal, including cameras like the QHY600 series and ZWO ASI6200.\u003c\/p\u003e\n\n\u003cp\u003eAt 624mm focal length and f\/4.8, the SQA130 is the most capable instrument in the SQA range for detailed imaging of compact nebulae, galaxies, and galaxy groups, while the Petzval design still eliminates the need for an external flattener. Rear adapters include M48, M54, and M68. The optional SQA Series Handle Bar and Heightening Section are compatible. The OTA ships with an Oxford cloth case.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced and observatory-level astrophotographers\u003c\/strong\u003e with large-payload equatorial mounts seeking maximum aperture and focal length in a fast Petzval refractor.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium-format imagers\u003c\/strong\u003e requiring a 55mm image circle for their full sensor coverage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e targeting galaxies, planetary nebulae, and compact emission regions that benefit from 624mm focal length at f\/4.8.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDedicated observatory setups\u003c\/strong\u003e where the weight and size of the SQA130 are not a constraint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA130?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlagship 130mm aperture at f\/4.8\u003c\/strong\u003e — the most powerful combination of aperture and speed in the SQA Series.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e624mm focal length\u003c\/strong\u003e — the longest in the series, ideal for detailed imaging of galaxies and compact objects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium-format 55mm image circle\u003c\/strong\u003e — full coverage for the largest astrocamera sensors available.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo pieces of SD glass\u003c\/strong\u003e — the same premium chromatic correction as the SQA106 and SQA85.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo flattener required\u003c\/strong\u003e — quintuplet Petzval design is flat-field natively across 55mm.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM48, M54, and M68 rear adapters\u003c\/strong\u003e — broadest sensor coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced deep-sky astrophotography (galaxies, compact nebulae, galaxy clusters)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband long-integration imaging\u003c\/li\u003e\n  \u003cli\u003eMedium-format astrocamera imaging\u003c\/li\u003e\n  \u003cli\u003eObservatory and fixed-pier setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e M48, M54, and M68 adapters included. Recommended back focus 55mm; usable range 46–76mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA Series Handle Bar, SQA Series Heightening Section.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMount requirements:\u003c\/strong\u003e At 11.76kg gross, a mount rated for at least 18–20kg payload is strongly recommended for stable imaging. This is a large-aperture observatory-class instrument.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstantial weight and size\u003c\/strong\u003e — at 9.18kg OTA and 11.76kg gross, the SQA130 requires a serious mount and is not suitable for portable setups or travel.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — no eyepiece holder or visual adapter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic focuser not included\u003c\/strong\u003e — requires a separately purchased motor adapter for auto-focus.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignificant investment\u003c\/strong\u003e — this is the top model in the SQA Series and priced accordingly. Ensure the mount and camera system justify this level of instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SQA130 compare to the SQA106?\u003c\/strong\u003e\u003cbr\u003eThe SQA130 has 130mm vs 106mm aperture, 624mm vs 509mm focal length, and 11.76kg vs 8.12kg gross weight. Both share the same f\/4.8 speed and 55mm image circle. The SQA130 provides more aperture and a longer focal length for more detailed imaging, but requires a significantly heavier mount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this suitable for travel?\u003c\/strong\u003e\u003cbr\u003eNo. The SQA130 is an observatory-class instrument. At nearly 12kg gross, it is best suited to fixed or semi-permanent mount setups.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, the \u003cstrong\u003eAskar SQA130\u003c\/strong\u003e is for astrophotographers who have reached the limits of smaller instruments and need the maximum aperture, speed, and focal length a Petzval refractor can offer. It is the definitive choice for serious imagers with the mount to support it.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3ca0e729-be26-4ccf-8240-206e301472a4.jpg?vf=B7gH3s\" alt=\"Askar SQA130 Product Size Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/f0ed310b-342e-48f3-87aa-d93293a66953.jpg?vf=B7gH3s\" alt=\"Askar SQA130 Connection Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b452b447-48dc-4885-9971-99a0590ef51e.jpg?vf=B7gH3s\" alt=\"Askar SQA130 Locking Screw Position Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/5dd1729a-2058-4cf6-9248-6705259bfbd4.jpg?vf=B7gH3s\" alt=\"Askar SQA130 Electronic Focuser Assembly Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154404630639,"sku":"SQA130","price":6719.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/fbb03084-0ac7-4bd0-ab38-5afd52ff1fc3.png?v=1779668993"}],"url":"https:\/\/ontariotelescope.com\/collections\/telescopes-astrographs.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}