{"product_id":"orion-optics-uk-350-400-mm-radius-blocks-each","title":"Orion Optics UK Radius Blocks for 350mm Telescopes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a stable, flat mounting surface on a curved tube\u003c\/li\u003e\n\u003cli\u003ePrecisely machined to match the radius of a 350mm telescope\u003c\/li\u003e\n\u003cli\u003eIdeal for attaching dovetail bars, guide scopes, and handles\u003c\/li\u003e\n\u003cli\u003ePrevents tube flexure and ensures a secure accessory connection\u003c\/li\u003e\n\u003cli\u003eSold individually to suit custom mounting configurations\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\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003eOrion Optics UK Radius Blocks for 350mm Telescopes\u003c\/h2\u003e\n      \u003cp\u003eThese Orion Optics UK Radius Blocks are machined to precisely match the curvature of a 350mm telescope optical tube. By creating a solid, flat mounting point on a curved surface, they provide the ideal interface for securely attaching heavy accessories without flexing or damaging the tube. This component is essential for mounting dovetail plates, guide scope rings, or carrying handles with rock-solid stability.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eA Custom-Fit Mounting Platform for 350mm Optical Tubes\u003c\/h3\u003e\n      \u003cp\u003eAttaching a flat dovetail bar directly to a curved 350mm optical tube creates stress points and an unstable connection that can shift during use. These radius blocks solve that problem by forming a perfect bridge between the tube's circular profile and the flat base of your accessory. The matched curvature distributes the load evenly, ensuring your equipment stays perfectly aligned and secure.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eEliminates Flexure:\u003c\/strong\u003e Prevents the flexing and potential tube deformation that can occur when tightening bolts against a curved surface, preserving optical alignment.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eVersatile Mounting:\u003c\/strong\u003e Provides a standardized flat surface for attaching a wide range of accessories, from heavy-duty dovetail plates to finder scope brackets.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSold Individually:\u003c\/strong\u003e Blocks are supplied as single units, allowing you to purchase the exact number required for your specific mounting project, whether it's two for a handle or four for a full-length plate.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the Orion Optics UK 350mm Radius Block?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Orion Optics UK 350mm Radius Block is designed to create a solid, flat mounting surface on a curved 350mm diameter optical tube. This allows you to securely attach accessories with flat bases, such as dovetail bars or guide scope rings, without causing stress, flex, or damage to the telescope tube.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow many 350mm Radius Blocks do I need to buy?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThese radius blocks are \u003cstrong\u003esold individually\u003c\/strong\u003e. The number you need depends on your application. For a short dovetail bar or a carrying handle, two blocks are typically sufficient. For a full-length top or bottom dovetail plate, you will likely need four blocks for maximum stability.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eAre mounting bolts included with the Orion Optics UK 350mm Radius Block?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eMounting hardware is not specified as being included. You will need to source bolts of the appropriate length and thread for your specific telescope tube and the accessory you are mounting.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use these 350mm Radius Blocks on a telescope from another brand?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, as long as your telescope's optical tube has an outer diameter of approximately 350mm, these blocks should provide a suitable fit. They are not proprietary to Orion Optics UK telescopes.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eI have an Orion Optics UK CT14 (a 350mm Newtonian). Will these 350mm Radius Blocks provide a stable base for my guide scope rings?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. The CT14 has a 350mm tube, and these blocks are designed for that exact curvature. Using a pair of these blocks will create the ideal stable, flat platform for attaching guide scope rings, ensuring your autoguiding setup is rigid and free of flex.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use these 350mm Radius Blocks to attach a Losmandy-style dovetail plate to my 350mm dobsonian tube?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, this is an excellent application for these blocks. By placing four 350mm Radius Blocks between the dobsonian tube and a long Losmandy-style plate, you create a very strong, evenly supported connection. This is critical for mounting the tube on an equatorial platform or a different mount system.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCompatible Telescope Diameter\u003c\/td\u003e\n\u003ctd\u003e350mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942593261853,"sku":"OOUK-350-400-MM-RADIUS-BLOCKS","price":100.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-Radius-blocks-to-fit-150mm-scope-1_23501cc3-c88c-4045-8aea-7f32c6aace54.jpg?v=1789608191","url":"https:\/\/davidastro.com\/products\/orion-optics-uk-350-400-mm-radius-blocks-each","provider":"David Astro","version":"1.0","type":"link"}