{"product_id":"askar-52mm-f-4-guide-scope","title":"Askar 52mm f\/4 Guide Scope","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Askar 52mm f\/4 Guide Scope is a compact, bright autoguiding telescope for astrophotography setups. With a 52mm aperture and 208mm focal length, it provides a practical balance of light-gathering, image scale, and portability for guiding deep-sky imaging rigs.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThis guide scope is best for astrophotographers who need a reliable 52mm guide scope for portable or mid-size imaging telescopes and want a simple, lightweight guiding solution.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e52mm aperture and 208mm focal length.\u003c\/li\u003e\n\u003cli\u003eFast f\/4 focal ratio for bright guide-star pickup.\u003c\/li\u003e\n\u003cli\u003eDoublet objective design.\u003c\/li\u003e\n\u003cli\u003eIntegrated helical focuser with 25mm focuser travel.\u003c\/li\u003e\n\u003cli\u003eXY-axis adjustment to help align with the main optical tube.\u003c\/li\u003e\n\u003cli\u003eRear adapter support for 1.25-inch and M42x0.75 connections.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAutoguiding for deep-sky astrophotography.\u003c\/li\u003e\n\u003cli\u003ePortable imaging rigs.\u003c\/li\u003e\n\u003cli\u003eFinder-scope style alignment and target acquisition.\u003c\/li\u003e\n\u003cli\u003eLightweight secondary optical system for astronomy setups.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe guide scope includes rear adapter support for 1.25-inch and M42x0.75 connections, with 40mm extension tubes supplied for setup flexibility. The base fits universal finder slots and includes 1\/4-inch and M4 threaded holes.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRequires a compatible guide camera for autoguiding.\u003c\/li\u003e\n\u003cli\u003eMounting fit should be confirmed before purchase.\u003c\/li\u003e\n\u003cli\u003eDesigned as a guide scope or finder-style telescope, not a main high-resolution imaging telescope.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\u003cp\u003eIt is best used as a compact 52mm guide scope for astrophotography.\u003c\/p\u003e\u003ch3\u003eDoes it have a helical focuser?\u003c\/h3\u003e\u003cp\u003eYes, it includes an integrated helical focuser with 25mm of travel.\u003c\/p\u003e\u003ch3\u003eCan it connect to common guide cameras?\u003c\/h3\u003e\u003cp\u003eYes, the 1.25-inch and M42x0.75 rear adapter options support many common guide-camera setups.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Askar 52mm f\/4 Guide Scope for customers who want a simple, capable guide scope with more aperture than a 30–32mm mini guide scope.\u003c\/p\u003e\u003ctable class=\"product-specifications\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd\u003e52mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd\u003e208mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eObjective Type\u003c\/th\u003e\n\u003ctd\u003eDoublet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Length\u003c\/th\u003e\n\u003ctd\u003e195mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOTA Weight\u003c\/th\u003e\n\u003ctd\u003e0.62kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRear Adapter\u003c\/th\u003e\n\u003ctd\u003eM42x0.75 and 1.25-inch adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocuser\u003c\/th\u003e\n\u003ctd\u003eIntegrated helical focuser, 25mm travel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Askar","offers":[{"title":"BLACK","offer_id":53155939418223,"sku":"ASK-52F4-GS-BLK","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"SILVER","offer_id":53155939450991,"sku":"ASK-52F4-GS-SLV","price":277.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/guidescope52f41.webp?v=1779736715","url":"https:\/\/ontariotelescope.com\/products\/askar-52mm-f-4-guide-scope","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}