{"product_id":"baader-2-bbhs-prism-adjustable-star-diagonal-60-years-vantablack-edition","title":"Baader 2\" BBHS® Prism Adjustable Star Diagonal - 60 Years Vantablack® Edition","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLimited 60 Years anniversary edition with Vantablack® 310 internal coating\u003c\/li\u003e\n\u003cli\u003e90° prism diagonal with a 47mm clear aperture\u003c\/li\u003e\n\u003cli\u003eBBHS® (Broad Band Hard Silver) coating provides 98-99% reflectivity from 390nm to 2000nm\u003c\/li\u003e\n\u003cli\u003ePrecision-adjustable (collimatable) CNC-milled aluminum housing\u003c\/li\u003e\n\u003cli\u003eBaader 2\" ClickLock eyepiece clamp for secure, tilt-free clamping\u003c\/li\u003e\n\u003cli\u003eIncludes a black-lacquered beechwood collector's box made in Austria\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\u003eBaader 2\" BBHS® Prism Adjustable Star Diagonal - 60 Years Vantablack® Edition\u003c\/h2\u003e\n\u003cp\u003eThis limited 60 Years anniversary edition of the Baader 2\" BBHS® Prism Diagonal elevates optical contrast by incorporating a Vantablack® 310 internal coating. The 90° prism design offers a 47mm clear aperture and achieves 98-99% reflectivity across an exceptionally broad spectrum from 390nm to 2000nm. Its precision-adjustable housing and 2\" ClickLock clamp secure even heavy accessories without tilt, all presented in a collector's beechwood case to mark the occasion.\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\u003eVantablack® 310: An Ultra-Black Coating from Aerospace\u003c\/h3\u003e\n\u003cp\u003eThe defining feature of this 60th-anniversary edition is the application of Vantablack® 310 coating to the internal housing surfaces. Originally developed for aerospace applications, this ultra-black material is exceptionally effective at absorbing stray light. Replacing the conventional matte-black coating, it suppresses internal reflections even more effectively and helps preserve image contrast and the finest details.\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\u003e98-99% Reflectivity: The BBHS® Coated BaK4 Prism\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this diagonal is a BaK4 glass prism featuring Baader's Broad Band Hard Silver (BBHS®) coating. This sealed silver layer delivers 98-99% reflectivity across a vast spectral range of 390nm to 2000nm, resulting in noticeably greater brilliance and color fidelity compared to standard coatings. The prism also carries Baader's Phantom Coating® Group anti-reflection treatment. As a guideline, prisms are recommended for telescopes with focal ratios of f\/6 to f\/7 or slower, while mirror diagonals are often preferred for faster optical systems.\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\u003e3-Point Alignment: A Precision-Adjustable Housing\u003c\/h3\u003e\n\u003cp\u003eThe BBHS® prism rests stress-free on an adjustable cradle within its CNC-machined aluminum housing. This allows the diagonal to be precisely collimated, a critical feature for building binocular telescopes or ensuring perfect alignment in any demanding optical system. Each diagonal leaves the factory with its 3-point alignment perfectly set on an optical bench, ensuring the optical and mechanical axes are matched. While you can adjust it, doing so voids the warranty on the factory collimation, so all other error sources like a tilted focuser should be eliminated first.\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\u003eThe 2\" ClickLock Clamp and Modular Connections\u003c\/h3\u003e\n\u003cp\u003eHolding your eyepiece or camera securely is the Baader 2\" ClickLock clamp, which grips accessories firmly on three sides with a simple 20° twist. This mechanism prevents tilting and ensures repeatable, centered alignment every time. The diagonal includes a 2\" nosepiece with a Safety-Kerf to prevent it from slipping out of the focuser. Its modular design offers multiple connection threads, including M48, M55, and a 2\"\/SCT thread on the telescope side, providing versatile integration into your imaging train.\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\u003eMade in Germany in a Collector's Beechwood Case\u003c\/h3\u003e\n\u003cp\u003eThis anniversary edition is a testament to German engineering. The housing components are made on Baader's own CNC machines, the optics are polished and coated in Germany, and final assembly, adjustment and quality testing are carried out at Baader's facility in Mammendorf. To complete the collector's package, each diagonal is delivered in a high-quality, black-lacquered beechwood box, specially manufactured in Austria from locally sourced wood.\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\u003eVantablack® Edition vs. Standard BBHS® Prism Diagonal\u003c\/h3\u003e\n\u003cp\u003eThe optical and mechanical systems of this limited edition (#2456118B) and the standard Baader 2\" BBHS® Prism Diagonal (#2456118) are identical. Both feature the same adjustable housing, BaK4 prism, BBHS® and Phantom Coating® Group coatings, and ClickLock clamp. The difference is on the inside: the internal coating. The anniversary edition also comes in a beechwood collector's box.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVantablack® Edition (#2456118B):\u003c\/strong\u003e Uses Vantablack® 310, originally developed for aerospace, on the internal housing surfaces for even more effective suppression of stray light and internal reflections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Edition (#2456118):\u003c\/strong\u003e Uses a conventional matte-black coating inside the housing.\u003c\/li\u003e\n\u003c\/ul\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\"\u003eWhat is the main advantage of the Vantablack® Edition over the standard Baader 2\" BBHS® Prism Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe optics and mechanics are the same; the difference is the internal coating and the beechwood collector's box. This \u003cstrong\u003eVantablack® Edition (#2456118B)\u003c\/strong\u003e uses an ultra-black Vantablack® 310 coating inside the housing for superior stray light absorption compared to the standard model's matte-black coating, helping to preserve image contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eShould I choose this Baader BBHS® Prism Diagonal or a mirror diagonal for my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe general guideline is that a prism diagonal, like this one, is ideal for telescopes with a focal ratio of \u003cstrong\u003ef\/6 to f\/7 or slower\u003c\/strong\u003e. For faster optical systems, a high-quality BBHS® mirror diagonal is typically recommended to maintain optimal performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Baader 60 Years Vantablack® Diagonal handle heavy accessories like binoviewers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e2\" ClickLock clamp\u003c\/strong\u003e provides a very secure, tilt-free grip that is well-suited for heavy accessories. Furthermore, the \u003cstrong\u003eprecision-adjustable housing\u003c\/strong\u003e is specifically designed to allow for the critical alignment needed when building systems like binocular telescopes, making it an excellent choice for such applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat happens if I adjust the collimation on the Baader 2\" BBHS® Prism Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe diagonal is factory-collimated on an optical bench. If you change the collimation, the \u003cstrong\u003ewarranty on the factory alignment becomes void\u003c\/strong\u003e. All other warranty coverage remains unaffected. It is recommended to rule out all other sources of error (e.g., a tilted focuser) before attempting to adjust the diagonal's collimation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" filters with this Baader Vantablack® Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. A 2\" filter can be installed permanently on the eyepiece side of the included 2\" nosepiece, leaving the filter threads on your telescope's focuser or visual back available for other uses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is included in the box with the Baader 2\" BBHS® 60 Years Vantablack® Edition?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe package includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Baader 2\" BBHS® Prism Adjustable Star Diagonal with Vantablack® coating and 2\" ClickLock® clamp.\u003c\/li\u003e\n\u003cli\u003eA 2\" Nosepiece to 2\"\/SCTa with Safety-Kerf.\u003c\/li\u003e\n\u003cli\u003eA high-quality, black-lacquered beechwood storage box.\u003c\/li\u003e\n\u003c\/ul\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\u003eUPC\/EAN\u003c\/td\u003e\n\u003ctd\u003e4047825061522\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eStar Diagonal Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeflection Angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e47 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflection Surface\u003c\/td\u003e\n\u003ctd\u003eSealed BBHS coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating® Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect image, Mirror inverted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Path\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eCNC-milled black aluminum, precision-adjustable (collimatable) cradle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eVantablack® 310 internal coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eClickLock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-Side Connection\u003c\/td\u003e\n\u003ctd\u003eø 2\" (50.8mm), S58\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-Side Inner Threads\u003c\/td\u003e\n\u003ctd\u003eM48, 2\"\/SCT Thread (50.8mm), M55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece-Side Connection\u003c\/td\u003e\n\u003ctd\u003eø 2\" (50.8mm), M55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e0.63 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdition\u003c\/td\u003e\n\u003ctd\u003eLimited 60 Years anniversary edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Case\u003c\/td\u003e\n\u003ctd\u003eBlack-lacquered beechwood box, made in Austria\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Manufacture\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBaader Article Number\u003c\/td\u003e\n\u003ctd\u003e#2456118B\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\"\u003eBaader 2\" BBHS® Prism Adjustable Star Diagonal, 60 Years Vantablack® Edition, with 2\" ClickLock® eyepiece clamp\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" Nosepiece to 2\"\/SCTa with Safety-Kerf (#2408156)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBlack-lacquered beechwood storage box\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\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\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Star_Diagonals_Vantablack_Edition_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\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":68067613278493,"sku":"BAA-2456118B","price":838.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/baader-bbhs-prism-diagonal-vantablack-edition-1_8c319051-f4e4-467d-9945-ab64727804ec.jpg?v=1794513155","url":"https:\/\/davidastro.com\/products\/baader-2-bbhs-prism-adjustable-star-diagonal-60-years-vantablack-edition","provider":"David Astro","version":"1.0","type":"link"}