{"product_id":"askar-111f","title":"Askar 111f","description":"\u003ch2\u003e\u003cspan\u003eAskar 111F Flat-Field Quadruplet Refractor\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cspan\u003eExplore the sky with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAskar 111F Flat-Field Quadruplet Refractor\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, a versatile self-flattened astrograph designed for both \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003evisual observing and astrophotography\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFeatures a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e111mm aperture\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e766mm focal length\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, and native \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ef\/6.9 focal ratio\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, making it a capable all-around telescope for deep-sky imaging, observing, and even daytime photography.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBuilt with a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003equadruplet air-spaced APO optical design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, using three front elements and one rear element, including \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eone ED glass element\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e to help reduce chromatic aberration and improve image clarity.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSupports \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efull-frame imaging\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with a generous \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e44mm image circle\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, delivering sharp, refined stars across the frame without requiring a separate field flattener.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe self-flattened design allows users to connect imaging accessories, reach focus, and start shooting without calculating back focus or purchasing an additional flattener.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eIncludes a photographic extension tube with a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2-inch filter thread\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, plus \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eM48x0.75\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eM54x0.75\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e adapters for broad compatibility with DSLR cameras and dedicated astronomy cameras.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBuilt-in internal baffling helps block stray light and improve contrast, giving astrophotographers cleaner, more detailed results.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eEquipped with a smooth \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3-inch rack-and-pinion dual-speed focuser\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1:10 fine adjustment\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, helping users achieve precise focus for high-quality imaging and observation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eRear \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e360-degree graduated rotator\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e allows accurate camera angle adjustment, making framing and composition easier during astrophotography sessions.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRetractable lens hood shortens the telescope for easier storage and transport while keeping the setup sleek and travel-friendly.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCNC-machined tube construction and the classic Askar F-series \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eblue and white finish\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e give the telescope a clean, premium look with dependable build quality.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe handle includes a finder base slot, and both sides of the focuser also feature finder bases, giving users flexible mounting options for finder scopes and accessories.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eIncludes a long \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e300mm Vixen-style dovetail plate\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1\/4-inch and 3\/8-inch screw holes\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, allowing direct connection to compatible tripods and mounts.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA strong choice for astrophotographers and observers looking for a cost-effective, full-frame-ready, flat-field refractor with premium usability right out of the box.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul data-spread=\"true\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProduct Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Flat-field quadruplet refractor \/ self-flattened astrograph\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Askar\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eModel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 111F\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAperture:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 111mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFocal Length:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 766mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFocal Ratio:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e f\/6.9\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eObjective Lens:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Quadruplet air-spaced APO, including one ED glass element\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptical Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Three elements in front, one element in rear\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eImage Circle:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 44mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFull-Frame Support:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eField Flattener Required:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e No, self-flattened design\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBuilt-In Baffle:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFocuser:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 3-inch rack-and-pinion dual-speed focuser\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFine Focus Adjustment:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1:10\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFocuser Travel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 30mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCamera Rotator:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 360-degree graduated rotator\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLens Hood:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Retractable\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDovetail Plate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 300mm Vixen-style dovetail\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTripod Mounting Threads:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1\/4-inch and 3\/8-inch screw holes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eRear-End Thread Types:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e M78x1 to M54x0.75, M54x0.75 to M54x0.75, M54x0.75 to M48x0.75\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFilter Thread:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e M48x0.75 adapter with 2-inch filter thread\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePhotographic Adapter Support:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e M48x0.75 and M54x0.75\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eNet Weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5.74kg\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eGross Weight with Tube Ring and Dovetail Plate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 6.76kg\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum Accessory Connection with Focuser Fully Retracted, Imaging Mode:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003e73mm from the base of the M48x0.75 male thread\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e91mm from the base of the M54x0.75 male thread\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum Accessory Connection with Focuser Fully Retracted, Observing Mode:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003e132mm from the end of the 1.25-inch eyepiece holder\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e142mm from the end of the 2-inch eyepiece holder\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMinimum Accessory Connection with Focuser Fully Extended, Imaging Mode:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003e43mm from the base of the M48x0.75 male thread\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e61mm from the base of the M54x0.75 male thread\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMinimum Accessory Connection with Focuser Fully Extended, Observing Mode:\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003e102mm from the end of the 1.25-inch eyepiece holder\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e112mm from the end of the 2-inch eyepiece holder\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTotal Length with 1.25-Inch Adapter and Dew Shield Contracted:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 664mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTotal Length with 1.25-Inch Adapter and Dew Shield Fully Extended:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 751mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTotal Length with Photographic Adapter and Dew Shield Contracted:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 728mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTotal Length with Photographic Adapter and Dew Shield Fully Extended:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 815mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eRecommended Use:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Astrophotography, visual astronomy, deep-sky imaging, full-frame imaging, and daytime photography\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003e\u003cspan\u003eWhat's in the box?\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eAskar 111F OTA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePair of tube rings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHandle\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e300mm Vixen dovetail plate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSet of photographic adapters\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52717116522816,"sku":"ASK-111F","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/1.webp?v=1782940699","url":"https:\/\/astroworldtelescopes.com\/products\/askar-111f","provider":"Astroworld Telescopes","version":"1.0","type":"link"}