{"title":"Guide Scopes","description":"\u003cp\u003eBrowse our Guide Scopes collection. Hot Sale.\u003c\/p\u003e","products":[{"product_id":"artesky-guidescope-ultraguide-70mm-ultra-70","title":"Artesky Guidescope UltraGuide 70mm (ULTRA-70)","description":"\u003ch1\u003eArtesky Guidescope UltraGuide 70mm \u003c\/h1\u003e\n\u003cdiv\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003eThe guide scope is extremely necessary when doing astrophotography, the UltraGuide is a telescope with a focal length of 400mm for a ratio of F\/5.7, ideal for instruments with a medium or long focal length.\u003c\/p\u003e\n\u003cp\u003eThe 31.8mm focuser allows you to use the UltraGuide both as a finder and as a guide scope, in fact it is equipped with a T2 thread to allow attachment to most guide cameras on the market.\u003c\/p\u003e\n\u003ch2\u003eWhat makes the UltraGuide 70mm different from other guide scopes on the market?\u003c\/h2\u003e\n\u003cp\u003eThe UltraGuide 70mm has been carefully selected among different models for better optical quality and greater robustness due to the body completely in aluminum. In addition, the helical focus is the great strength of this instrument, it allows two types of focus: a less precise but fast one and a second micrometric one thanks to the particular focuser, in this way you will have the perfect focus in an instant!\u003c\/p\u003e\n\u003cp\u003eWith this instrument it is possible to guide up to 1500mm of focal length, even higher focal lengths up to 1900mm can be reached! This is impossible with other telescopes in its category!\u003c\/p\u003e\n\u003cp\u003eThe back-focus up to 41mm allows a very comfortable focusing of both the most demanding eyepieces and of the majority of cameras on the market (QHY, ZWO, ALTAIR ASTRO, etc)\u003c\/p\u003e\n\u003cp\u003eThe UltraGuide 70mm guide telescope thanks to its helical focuser, always maintains the correct orientation of the inserted camera; using the focus system, the camera does not rotate and this function is essential for correct use with autoguiding software (such as PHD)\u003c\/p\u003e\n\u003cp\u003eThe helical focuser has a maximum stroke of 12mm while the fast focus system has a maximum stroke of 70mm.\u003c\/p\u003e\n\u003cp\u003eIncluded in the price of the telescope you will have rings, with three screws with Nylon tips, offset and adjustable that will allow you to have greater precision of the instrument.\u003c\/p\u003e\n\u003cp\u003eThe telescope is complete with a mini Vixen bar, compatible with various bases for finderscopes, some of which can be found among the related products, however we recommend the Altair Astro Universal base; otherwise you can conveniently connect it to a clamp and apply it to any Vixen or Losmandy bar.\u003c\/p\u003e\n\u003ch2\u003eHelical focuser\u003c\/h2\u003e\n\u003cp\u003eThe Ultra Guide 70's helical focuser is very useful for ensuring precise and optimal focus.\u003c\/p\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable cellspacing=\"0\" border=\"0\"\u003e\n\u003ccolgroup span=\"2\" width=\"214\"\u003e\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd height=\"22\" align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003eAperture\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003e70 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"22\" align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003eFocal Length\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003e400 mm (f\/5.7) \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"21\" align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003eMax Focus\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003e41 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"36\" align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003e1850 g (including tube and Vixen bar) \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"22\" align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003eCamera connexion\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003e1.25\" + T2 Male \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd height=\"53\" align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003eAttachment\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cspan style=\"font-family: Calibri;\"\u003eMini Vixen, standard for GSO, Orion, Skywatcher, Celestron, etc. finder bases \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGuidescope UltraGuide 70mm (ULTRA-70)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eArtesky's warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Artesky","offers":[{"title":"Default Title","offer_id":46492146925665,"sku":"ciy1787938046821","price":165.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/3933\/7057\/files\/artesky-guidescope-ultraguide-70mm-ultra-70_1.jpg?v=1787938051"},{"product_id":"starfield-60mm-guide-scope-helical-focuser-sfg-60nr","title":"Starfield 60mm Guide Scope Helical Focuser (SFG-60NR)","description":"\u003ch1\u003eStarfield 60mm Guide Scope Helical Focuser\u003c\/h1\u003e\n\u003cp\u003eImprove \u003cstrong\u003eguiding\u003c\/strong\u003e accuracy for \u003cstrong\u003eastrophotography\u003c\/strong\u003e and deep-sky \u003cstrong\u003eDSO imaging\u003c\/strong\u003e with the Starfield 60mm Guide Scope. Built for modern imaging rigs, it delivers a bright, wide field of view so you can lock onto guide stars faster and maintain stable tracking during long exposures. Whether you’re running a compact travel setup or a full-size imaging rig, this guide scope is a practical way to upgrade your \u003cstrong\u003eastronomy\u003c\/strong\u003e workflow.\u003c\/p\u003e\n\u003ch2\u003eBest For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuiding\u003c\/strong\u003e refractors and reflectors in the ~200–800 mm imaging focal length range\u003c\/li\u003e\n\u003cli\u003ePortable rigs where fast setup and reliable \u003cstrong\u003ePHD2 guiding\u003c\/strong\u003e matter\u003c\/li\u003e\n\u003cli\u003eDeep-sky \u003cstrong\u003eDSO imaging\u003c\/strong\u003e (nebulae, galaxies, clusters) with longer sub-exposures\u003c\/li\u003e\n\u003cli\u003eWide-field guide star acquisition in sparse regions of the sky\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWide-Field Optics for Faster Guide Star Acquisition\u003c\/h2\u003e\n\u003cp\u003eWith a \u003cstrong\u003e228 mm focal length\u003c\/strong\u003e and multi-coated optics, the Starfield 60mm Guide Scope provides a generous field of view that makes it easier to find a usable guide star quickly. This is especially helpful when you’re framing DSOs where the guide-star options can be limited. Less hunting means more time collecting data.\u003c\/p\u003e\n\u003ch2\u003eSmooth 2\" Helical Focuser for Precise Guiding Focus\u003c\/h2\u003e\n\u003cp\u003eThe integrated \u003cstrong\u003e2\" helical focuser\u003c\/strong\u003e offers fine, controlled focusing for tight guide stars—ideal for consistent \u003cstrong\u003ePHD2 guiding\u003c\/strong\u003e performance. A \u003cstrong\u003ebrass compression ring\u003c\/strong\u003e secures your camera or accessories evenly and helps avoid marring barrels. Included is a \u003cstrong\u003e2\"\/1.25\" adapter\u003c\/strong\u003e with a brass compression ring and a \u003cstrong\u003e2\" filter thread\u003c\/strong\u003e, giving you flexible compatibility for common astrophotography guiding setups.\u003c\/p\u003e\n\u003ch2\u003eMounting Compatibility: Synta\/Vixen-Style Finder Shoe Universal Base\u003c\/h2\u003e\n\u003cp\u003eThis guide scope includes a \u003cstrong\u003efinder bracket and universal base\u003c\/strong\u003e that matches the common \u003cstrong\u003eSynta\/Vixen-style\u003c\/strong\u003e finder shoe standard used by many telescope and mount manufacturers. It’s a clean, secure way to add guiding without unnecessary bulk or complicated hardware.\u003c\/p\u003e\n\u003ch2\u003eRecommended Guide Cameras \u0026amp; Sensor Notes\u003c\/h2\u003e\n\u003cp\u003eA great match is the \u003cstrong\u003eZWO ASI220\u003c\/strong\u003e (or a similar sensor class), which pairs well with the focal length and field of view of this guide scope for dependable guiding. \u003cstrong\u003eLarger guide camera sensors\u003c\/strong\u003e will also perform exceptionally well and can make guide star selection even easier—especially when imaging DSOs where star density varies.\u003c\/p\u003e\n\u003ch2\u003eImportant Note: Rotating Focuser \u0026amp; PHD2 Calibration\u003c\/h2\u003e\n\u003cp\u003eThis guide scope \u003cstrong\u003edoes not\u003c\/strong\u003e have a non-rotating focuser. The helical focuser assembly can rotate, and that can rotate the guide camera orientation. If the guide camera rotates, your guiding calibration in \u003cstrong\u003ePHD2\u003c\/strong\u003e (or similar guiding software) will need to be redone for best performance.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Diameter:\u003c\/strong\u003e 63 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength incl. Focuser:\u003c\/strong\u003e 257 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptics:\u003c\/strong\u003e Multicoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal Length:\u003c\/strong\u003e 228 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser:\u003c\/strong\u003e 2\" Helical Focuser with Brass Compression Ring (rotating helical assembly)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapter:\u003c\/strong\u003e 2\"\/1.25\" with Brass Compression Ring and 2\" Filterthread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (Finder w\/o Bracket, 2\"):\u003c\/strong\u003e 17.1 oz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (Finder w\/o Bracket, 1 1\/4\"):\u003c\/strong\u003e 20.8 oz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (Bracket):\u003c\/strong\u003e 12.4 oz.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFinderscope 60 mm\u003c\/li\u003e\n\u003cli\u003eFinderbracket with Universal base (Synta\/Vixen-style finder shoe compatible)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"x-el x-el-span c1-7c c1-7d c1-b c1-c c1-d c1-e c1-f c1-g\"\u003eWarranty \u0026amp; Manual\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-7c c1-7d c1-b c1-c c1-d c1-e c1-f c1-g\"\u003e\u003cspan\u003eStarfield Limited Warranty\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch4\u003eDoes this guide scope have a non-rotating focuser?\u003c\/h4\u003e\n\u003cp\u003eNo. This model uses a \u003cstrong\u003erotating 2\" helical focuser assembly\u003c\/strong\u003e. As you focus—or if you rotate the camera for framing—the guide camera orientation may rotate.\u003c\/p\u003e\n\u003ch4\u003eIf my guide camera rotates, do I need to recalibrate guiding?\u003c\/h4\u003e\n\u003cp\u003eYes. Any rotation changes the camera’s orientation relative to the mount axes. For accurate tracking, you should \u003cstrong\u003eredo your calibration in PHD2\u003c\/strong\u003e (or your preferred guiding software) after any camera rotation.\u003c\/p\u003e\n\u003ch4\u003eIs recalibrating good practice even if nothing rotated?\u003c\/h4\u003e\n\u003cp\u003eYes—recalibrating before a new imaging session is a smart best practice for consistent results. It helps ensure dependable \u003cstrong\u003ePHD2 guiding\u003c\/strong\u003e performance, even if your rig configuration looks unchanged.\u003c\/p\u003e\n\u003ch4\u003eWhat mounting standard does the universal base fit?\u003c\/h4\u003e\n\u003cp\u003eThe included universal base matches the common \u003cstrong\u003eSynta\/Vixen-style finder shoe\u003c\/strong\u003e used by many telescope and mount manufacturers.\u003c\/p\u003e\n\u003ch4\u003eWhat guide camera do you recommend?\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO ASI220\u003c\/strong\u003e (or a similar sensor class) is an excellent pairing. Larger guide camera sensors will also perform exceptionally well and can make guide star selection easier when you’re guiding for deep-sky astrophotography and DSO imaging.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":46492147023969,"sku":"rtg1787938053802","price":85.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/3933\/7057\/files\/starfield-60mm-guide-scope-helical-focuser-sfg-60nr_1.png?v=1787938058"},{"product_id":"starfield-32mm-guide-scope-sfg-32","title":"Starfield 32mm Guide Scope (SFG-32)","description":"\u003ch1\u003eStarfield 32mm F4 Guide Scope\u003c\/h1\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eThe Starfield 32mm Guide scope is the perfect solution for ultra-portable imaging setups or Star tracker mounts like the Skywatcher Star Adventure or iOptron Skyguider Pro.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eCompatible with guide scopes that are 1.25\" in diameter and with an M42 mount interface.  This CNC made with hardened finish displays the high build quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003e32mm f\/4.  128mm focal length\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eAdjustable 6 point rings with nylon tips to prevent making the finish\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eMini-vixen style finder shoe.  Compatible with most telescope finder shoes.  Starfield,  Skywatcher, Celestron, Vixen, etc..\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eLens Diameter: 32 mm\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eFocal Length:   128 mm\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eCoated: FMC\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eSupport interface: 1.25in Or M42*0.75 mount Camera\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eFocuser Type: Helical Front Focuser\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eTube Travel: 45 mm\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eMaterial: Aluminum\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-8x c1-8y c1-b c1-c c1-d c1-e c1-h c1-i\"\u003eNet Weight: 342g \/ 0.75lb \/ 12.06oz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e32mm F4 Guidescope \u003c\/li\u003e\n\u003cli\u003eAdjustable rings\u003c\/li\u003e\n\u003cli\u003eUniversal finder-shoe mounting bar\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003ch3\u003e \u003c\/h3\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eStarfield Limited Warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":46492147417185,"sku":"kol1787938048978","price":63.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/3933\/7057\/files\/starfield-32mm-guide-scope-sfg-32_1.webp?v=1787938074"},{"product_id":"touptek-gs-papo-guide-scopes","title":"Touptek GS PAPO Guide Scopes","description":"\u003ch1\u003eTouptek GS Serie PAPO Guide Scopes\u003c\/h1\u003e\n\u003cp\u003eThe GS Series guide scopes feature a proprietary three-element PAPO (planar apochromatic with integrated field flattener) optical configuration, incorporating a single ED element to achieve effective chromatic correction. The internal barrel is precision-machined with anti-reflection threads to suppress stray light, while all lenses are coated with multi-layer broadband AR coatings. This greatly enhances image contrast and resolution, ensuring pinpoint star images for accurate, efficient guiding, thus improving the stability of primary telescope imaging.\u003c\/p\u003e\n\u003cp\u003eDesigned around a 1-inch flat, well-corrected image circle, the GS Series supports sensors up to the IMX533 size. Versatile in function, it can be used for star-hopping, guiding, visual observing, and even DSO imaging—making it an ideal tool for astrophotography, casual stargazing, and entry-level night-sky photography.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S1_22e0b587-54c1-4c63-9c45-117ce8259581.webp?v=1763663120\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S2_8289f398-9e9f-41f7-a4f7-9d8ada5bf3f7.webp?v=1763663264\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch4\u003ePAPO Apochromatic Optical Design for True Star Color Reproduction\u003c\/h4\u003e\n\u003cp\u003eThe GS Series guide scopes feature a proprietary 1-inch corrected image circle, three-element PAPO (Planar Apochromatic with integrated field flattener) optical design, incorporating an ED glass element to effectively correct chromatic aberration, astigmatism, and field curvature. This design delivers high resolution and crisp, pinpoint star images. The outstanding optical performance makes the GS Series equally suited for guiding, visual observing, and entry-level astrophotography.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eSpot diagram of GS-150\u003c\/h4\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/SP1.webp?v=1763663357\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSpot diagram of GS-200\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/SP2.webp?v=1763663391\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSpot diagram of GS-250\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/SP3.webp?v=1763663422\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSpot diagram of GS-300\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/SP4.webp?v=1763663441\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSpot diagram of GS-350\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/SP5.webp?v=1763663460\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003e\n\u003cspan\u003e2\u003c\/span\u003eHigh-Transmission Coatings \u0026amp; Anti-Reflection Threads\u003c\/h4\u003e\n\u003cp\u003eAll optical surfaces are treated with broadband multi-layer AR coatings to reduce reflections and maximize light transmission. The internal barrel is precision-machined with anti-reflection threads, complemented by additional stray-light suppression measures, greatly enhancing image contrast and clarity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S3_0f72a349-df62-47d1-833b-73a6fb981f3f.webp?v=1763663571\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch4\u003eCNC Precision Machining with Fine Matte Finish\u003c\/h4\u003e\n\u003cp\u003eThe optical tube, mounting rings, and dovetail plate are crafted from aluminum alloy via CNC machining, balancing lightweight design with structural strength. Anodized surfaces provide wear and corrosion resistance suitable for field astronomy. The fine matte finish offers a comfortable, non-slip, and durable tactile experience.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S4_19d8a330-2374-4b4d-8d25-114b3fba8ffd.jpg?v=1763664044\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch4\u003eModular Structure for Maximum Flexibility\u003c\/h4\u003e\n\u003cp\u003eThe main barrel integrates a proprietary universal M48 extension tube with built-in anti-reflection coating, enabling flexible configuration to meet different optical path requirements. This modular design supports both visual observation and astrophotography applications.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S5_fadcd104-2e71-4962-a4d4-491571a9c655.webp?v=1763664077\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch4\u003eDual Focusing Options for Flexibility\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch4\u003eAC Version - Rackless Focuser\u003c\/h4\u003e\n\u003cp\u003eSmooth manual focus with Crayford-style precision; stable optical alignment; ideal for light-load astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4\u003eAR Version - Rack-and-Pinion Focuser\u003c\/h4\u003e\n\u003cp\u003eHigh-precision focusing with gear-and-rack drive; compatible with ToupTek Astro AAF electronic focuser; supports heavier loads and automated operation.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S6_06d18859-f665-490c-bbf7-01fb066efabf.webp?v=1763664113\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWide Compatibility Provides Seamless Integration\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003e✓\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eSupports guide and planetary cameras with sensor sizes up to 1\".\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S7_b9e13664-7c93-46ee-9400-be10c2be225d.webp?v=1763664211\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e✓\u003c\/span\u003e\u003cspan\u003e Focuser end with 1.25\" inner diameter and external M42×0.75 thread for direct connection to mainstream cooled cameras (recommended sensor size ≤ 1\").\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S8_a9266538-e7f6-481b-a45c-c8e9231c830a.webp?v=1763664243\u0026amp;width=700\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e✓ Multiple M5 threaded holes on the top and sides of the clamp for attaching additional astronomical accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S9_79f3cd33-f588-487a-b1d4-858aa6bf05b8.webp?v=1763664268\u0026amp;width=700\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e✓ Dovetail plate with multiple M6 threaded holes and one 3\/8\"-16 thread on the bottom for quick mounting to tripods or equatorial mounts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S10_f361a185-a00d-4a68-af5f-eb4f29ba6c9f.webp?v=1763664288\u0026amp;width=700\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e✓ Universal M48 extension tube assembly with replaceable short tube for use with eyepieces or diagonals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/S11.webp?v=1763664306\u0026amp;width=700\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch2\u003eFully Upgraded from the FS Series\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eCompared with the previous FS series, the GS series guide scopes bring major improvements in optical design and performance:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFS-250AC \/ AR\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eGS-150AC \/ AR\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eGS-200AC \/ AR\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eGS-250AC \/ AR\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eGS-300AC \/ AR\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eGS-350AC \/ AR\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAchromatic Doublet\u003c\/td\u003e\n\u003ctd\u003ePAPO Triplet with Integrated Field Flattener\u003c\/td\u003e\n\u003ctd\u003ePAPO Triplet with Integrated Field Flattener\u003c\/td\u003e\n\u003ctd\u003ePAPO Triplet with Integrated Field Flattener\u003c\/td\u003e\n\u003ctd\u003ePAPO Triplet with Integrated Field Flattener\u003c\/td\u003e\n\u003ctd\u003ePAPO Triplet with Integrated Field Flattener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAperture \/ Focal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 mm \/ 250 mm\u003c\/td\u003e\n\u003ctd\u003e30 mm \/ 150 mm\u003c\/td\u003e\n\u003ctd\u003e40 mm \/ 200 mm\u003c\/td\u003e\n\u003ctd\u003e50 mm \/ 250 mm\u003c\/td\u003e\n\u003ctd\u003e50 mm \/ 300 mm\u003c\/td\u003e\n\u003ctd\u003e58 mm \/ 350 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003ctd\u003ef\/5\u003c\/td\u003e\n\u003ctd\u003ef\/5\u003c\/td\u003e\n\u003ctd\u003ef\/5\u003c\/td\u003e\n\u003ctd\u003ef\/6\u003c\/td\u003e\n\u003ctd\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25-inch \/ M42×0.75\u003c\/td\u003e\n\u003ctd\u003e1.25-inch \/ M42×0.75\u003c\/td\u003e\n\u003ctd\u003e1.25-inch \/ M42×0.75\u003c\/td\u003e\n\u003ctd\u003e1.25-inch \/ M42×0.75\u003c\/td\u003e\n\u003ctd\u003e1.25-inch \/ M42×0.75\u003c\/td\u003e\n\u003ctd\u003e1.25-inch \/ M42×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOTA Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.60 kg\u003c\/td\u003e\n\u003ctd\u003e0.59 kg\u003c\/td\u003e\n\u003ctd\u003e0.68 kg\u003c\/td\u003e\n\u003ctd\u003e0.82 kg\u003c\/td\u003e\n\u003ctd\u003e0.94 kg\u003c\/td\u003e\n\u003ctd\u003e1.21 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocuser Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC: Rackless (FSB-125C)AR: Rack-and-Pinion (FSB-125R)\u003c\/td\u003e\n\u003ctd\u003eAC: Rackless (FSB-125C)AR: Rack-and-Pinion (FSB-125R)\u003c\/td\u003e\n\u003ctd\u003eAC: Rackless (FSB-125C)AR: Rack-and-Pinion (FSB-125R)\u003c\/td\u003e\n\u003ctd\u003eAC: Rackless (FSB-125C)AR: Rack-and-Pinion (FSB-125R)\u003c\/td\u003e\n\u003ctd\u003eAC: Rackless (FSB-125C)AR: Rack-and-Pinion (FSB-125R)\u003c\/td\u003e\n\u003ctd\u003eAC: Rackless (FSB-125C)AR: Rack-and-Pinion (FSB-125R)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGS-XXXAC\/AR guide scope (Includes mounting ring\/dovetail plate)\u003c\/li\u003e\n\u003cli\u003eDust cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/P1.webp?v=1763666510\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong data-end=\"650\" data-start=\"615\"\u003eToupTek 2 year Warranty \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Touptek","offers":[{"title":"Crayford Focuser \/ 150mm","offer_id":46492147449953,"sku":"aks1787938073753","price":96.67,"currency_code":"USD","in_stock":true},{"title":"Crayford Focuser \/ 200mm","offer_id":46492147482721,"sku":"ciy1787938073754","price":136.04,"currency_code":"USD","in_stock":true},{"title":"Crayford Focuser \/ 250mm","offer_id":46492147515489,"sku":"mah1787938073755","price":129.04,"currency_code":"USD","in_stock":true},{"title":"Crayford Focuser \/ 300mm","offer_id":46492147548257,"sku":"qdf1787938073756","price":141.51,"currency_code":"USD","in_stock":true},{"title":"Crayford Focuser \/ 350mm","offer_id":46492147581025,"sku":"pti1787938073757","price":175.76,"currency_code":"USD","in_stock":true},{"title":"Rack-and-Pinion Focuser \/ 150mm","offer_id":46492147613793,"sku":"rcc1787938073758","price":110.26,"currency_code":"USD","in_stock":true},{"title":"Rack-and-Pinion Focuser \/ 200mm","offer_id":46492147646561,"sku":"ozr1787938073759","price":119.72,"currency_code":"USD","in_stock":true},{"title":"Rack-and-Pinion Focuser \/ 250mm","offer_id":46492147679329,"sku":"lzk1787938073760","price":155.25,"currency_code":"USD","in_stock":true},{"title":"Rack-and-Pinion Focuser \/ 300mm","offer_id":46492147712097,"sku":"xmn1787938073761","price":160.07,"currency_code":"USD","in_stock":true},{"title":"Rack-and-Pinion Focuser \/ 350mm","offer_id":46492147744865,"sku":"ftw1787938073762","price":199.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/3933\/7057\/files\/touptek-gs-papo-guide-scopes_1.webp?v=1787938078"}],"url":"https:\/\/www.sunlitharbor.shop\/collections\/guide-scopes.oembed","provider":"My Store","version":"1.0","type":"link"}