{"product_id":"baader-planetarium-guidescope-rings-1-pair-size-iii-140-185mm","title":"Baader Planetarium Guidescope Rings (1 pair) – Size III, 140-185mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for Tube Diameters from 140-185mm\u003c\/li\u003e\n\u003cli\u003eSolid, Turned Aluminum Construction\u003c\/li\u003e\n\u003cli\u003eNon-Rotating, Non-Marring V2A Steel Tips\u003c\/li\u003e\n\u003cli\u003eBall-Bearing Adjustment Mechanism\u003c\/li\u003e\n\u003cli\u003eMultiple Accessory Mounting Points\u003c\/li\u003e\n\u003cli\u003eLarge, Easy-to-Grip Adjustment Knobs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eGuidescope Rings (1 pair) – Size III, 140-185mm\u003c\/h2\u003e\n\u003cp\u003eEngineered for absolute stability, the Baader Planetarium Size III Guidescope Rings provide a robust, non-damaging mounting platform for guide telescopes with tube diameters from 140mm to 185mm. Machined from solid, turned aluminum with a 28mm width, these rings feature large adjustment knobs and unique ball-bearing tips that prevent slipping and protect your telescope's finish. The design ensures your guiding setup remains rigid and perfectly aligned throughout your imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBall-Bearing Tips: Secure Guiding Without Scratches\u003c\/h3\u003e\n\u003cp\u003eThe critical point of contact in any guidescope ring is the adjustment screw tip. These Baader rings utilize three M10 adjustment screws per ring, each equipped with a 10mm diameter, non-rotating tip. This tip features a V2A stainless steel ball-bearing surface covered by a hard rubber sheath, ensuring the pressure surface does not twist against your telescope's tube during adjustment.\u003c\/p\u003e\n\u003cp\u003eThis innovative design provides two key benefits. First, it creates a solid, non-slip grip that prevents any shift in the guidescope's alignment. Second, it completely eliminates the risk of scratching, denting, or marring the finish of your optical tube, preserving the condition of your equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSolid Aluminum Body with Integrated ¼\" Accessory Mounts\u003c\/h3\u003e\n\u003cp\u003eThe main body of each ring is machined from a single piece of solid aluminum for maximum rigidity and vibration suppression. The base includes a central ¼\" photo-threaded connection and two additional 5mm through-holes, offering versatile and secure options for bolting the rings to any dovetail bar.\u003c\/p\u003e\n\u003cp\u003eFor added functionality, four milled planar surfaces are integrated into the outer diameter of each ring. Each of these surfaces is tapped with a standard ¼\" photo thread, allowing you to piggyback additional accessories like a finderscope, laser pointer, or a small wide-field camera directly onto your guide scope assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the Baader Size III Guidescope Rings prevent scratching my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe rings feature three M10 adjustment screws with \u003cstrong\u003enon-rotating tips\u003c\/strong\u003e. Each tip has a ball-bearing surface made of V2A steel and is covered by a hard rubber sheath. Because the tip doesn't spin as you tighten it, it provides a firm grip without marring or scratching your telescope's tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the mounting points on the outside of the Baader Size III rings for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe exterior of each ring has four milled flat surfaces with standard \u003cstrong\u003e¼\" photo-threaded holes\u003c\/strong\u003e. These allow you to \"piggyback\" additional accessories, such as a finderscope, a small camera, or other aiming devices, directly onto the guidescope assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre these Baader guidescope rings stable enough for long-exposure guiding?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. They are machined from \u003cstrong\u003esolid, turned aluminum\u003c\/strong\u003e to be massive and rigid. This construction, combined with the 28mm wide profile and secure, non-slip adjustment screws, minimizes flexure and ensures your guide scope remains perfectly aligned throughout a long imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I mount these Baader rings on a standard Vixen or Losmandy dovetail bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the base of each ring is designed for versatile mounting. It includes a central standard \u003cstrong\u003e¼\" photo-threaded connection\u003c\/strong\u003e and two additional 5mm through-holes, providing multiple options for securely bolting the rings to most common dovetail plates and bars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the large knobs on the Baader Size III rings?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe large, knurled adjustment knobs are designed for easy use, even when \u003cstrong\u003ewearing gloves in cold weather\u003c\/strong\u003e. They provide excellent leverage, allowing you to make fine, controlled adjustments to the guidescope's alignment without requiring tools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm using a heavy guidescope like a small refractor, will the Baader Size III rings hold it securely without flexure?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The rings are engineered from solid aluminum for maximum rigidity. Their \"massive\" design is specifically intended to support heavier guide telescopes without introducing sag or flexure, which is critical for maintaining precise tracking during astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter Range\u003c\/td\u003e\n\u003ctd\u003e140mm - 185mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Width\u003c\/td\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction Material\u003c\/td\u003e\n\u003ctd\u003eSolid, turned aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Screws\u003c\/td\u003e\n\u003ctd\u003e3x M10 per ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Tip Diameter\u003c\/td\u003e\n\u003ctd\u003e10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Tip Material\u003c\/td\u003e\n\u003ctd\u003eV2A steel ball-bearing with hard rubber sheath\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Mounting\u003c\/td\u003e\n\u003ctd\u003e1x ¼\" photo thread, 2x 5mm through-holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Mounting\u003c\/td\u003e\n\u003ctd\u003e4x ¼\" photo threads per ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e1.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eball bearing tips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Type\u003c\/td\u003e\n\u003ctd\u003e6x large handknobs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brands\u003c\/td\u003e\n\u003ctd\u003eAll Telescopes in given Tube sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameters\u003c\/td\u003e\n\u003ctd\u003e140 – 185 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSize III Guidescope Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913211408669,"sku":"BAA-1500203","price":392.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Guidescope-Rings-1-pair-Size-III-140-185mm-1_edaedc7d-768a-42d8-9bcd-d9a577686686.jpg?v=1789088232","url":"https:\/\/davidastro.com\/fr\/products\/baader-planetarium-guidescope-rings-1-pair-size-iii-140-185mm","provider":"David Astro","version":"1.0","type":"link"}