{"product_id":"orion-optics-uk-250mm-radius-blocks-each","title":"Orion Optics UK Radius Blocks to Fit 250mm Scope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned to perfectly match 250mm diameter telescope tubes\u003c\/li\u003e\n\u003cli\u003eProvides a stable, no-flex mounting surface for accessories\u003c\/li\u003e\n\u003cli\u003ePrevents tube damage by distributing clamping pressure evenly\u003c\/li\u003e\n\u003cli\u003eAuthentic Orion Optics UK component for guaranteed compatibility\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\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\u003eRadius Blocks to Fit 250mm Scope\u003c\/h2\u003e\n\u003cp\u003eThese genuine Orion Optics UK Radius Blocks are machined to perfectly match the curvature of a 250mm optical tube, providing an impeccably solid mounting point for dovetail bars, finder scopes, and other essential accessories.\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\u003eA Perfect Fit for 250mm Orion Optics UK Tubes\u003c\/h3\u003e\n\u003cp\u003eWhen mounting hardware to a premium instrument, a generic, flat-surfaced accessory can create pressure points that damage the tube or lead to unstable connections. These radius blocks are engineered by Orion Optics UK specifically for their 250mm (10-inch) telescope tubes, ensuring the load is distributed evenly across a perfectly mated surface. This preserves the integrity of your optical tube while creating a rigid foundation for 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\u003eEliminate Flexure for 250mm Accessory Mounting\u003c\/h3\u003e\n\u003cp\u003eAttaching a guide scope or heavy finder scope to a curved tube with improper hardware is a primary source of mechanical flexure, which can ruin long-exposure images. By creating a large, curved contact area, these blocks eliminate the single-point-of-contact instability inherent in flat mounting plates. Please note these blocks are sold individually, allowing you to build the custom mounting solution your imaging setup requires; for a typical dovetail bar, two blocks are needed.\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\"\u003eWhy do I need specific Radius Blocks for my 250mm Orion Optics UK scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need radius blocks specifically designed for a \u003cstrong\u003e250mm tube\u003c\/strong\u003e to ensure a perfect match with the tube's curvature. This perfect fit prevents creating stress points on the tube, distributes the weight of accessories evenly, and provides a rigid, flex-free mounting platform that generic flat hardware cannot offer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm mounting a heavy guide scope on my OOUK 250mm Newtonian. How do these blocks help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a heavy guide scope on a \u003cstrong\u003e250mm Newtonian\u003c\/strong\u003e, these blocks are critical. They create a broad, curved contact surface that locks the mounting plate securely to the tube. This prevents the entire guide scope assembly from shifting, sagging, or flexing during an exposure, which is essential for maintaining sharp, pinpoint stars in your final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow many Orion Optics UK Radius Blocks do I need to mount a dovetail bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo securely mount a dovetail bar, you will typically need \u003cstrong\u003etwo radius blocks\u003c\/strong\u003e, one for each attachment point. As these blocks are sold individually, you must add two to your cart for this purpose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use these 250mm blocks to mount a finder scope base?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, a single radius block provides an ideal, solid base for attaching a finder scope shoe to your \u003cstrong\u003e250mm telescope\u003c\/strong\u003e. It ensures the finder is mounted securely and maintains its alignment with the main optics far more reliably than a base mounted directly to the curved tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of using an Orion Optics UK Radius Block over a generic part?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is the guaranteed compatibility and perfect radius match for an Orion Optics UK \u003cstrong\u003e250mm telescope\u003c\/strong\u003e. This eliminates any guesswork and ensures a secure, professional-grade fit that protects your investment and maximizes the stability of your mounted accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs mounting hardware included with the Radius Blocks for a 250mm scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMounting hardware such as screws, nuts, or bolts is \u003cstrong\u003enot included\u003c\/strong\u003e. You will need to source the appropriate hardware for the specific accessory you intend to mount, as requirements vary between different dovetail bars, finder shoes, and other equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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\/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":52942591295773,"sku":"OOUK-250MM-RADIUS-BLOCKS-EACH","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_7a5aa814-a315-4c98-aa68-1b2f1077cc4a.jpg?v=1789608175","url":"https:\/\/davidastro.com\/products\/orion-optics-uk-250mm-radius-blocks-each","provider":"David Astro","version":"1.0","type":"link"}