{"title":"Baader MaxBright II Binoviewers","description":"\u003cp\u003eThe Baader MaxBright II is a binoviewer that lets you observe with both eyes through a single telescope, which makes long sessions on the Moon and planets more comfortable and often brings out more detail. Its large prisms give a wide clear path suited to low-power eyepieces.\u003c\/p\u003e\u003cp\u003eThis collection includes the MaxBright II Binoviewer Set and complete set, glasspath correctors that help reach focus on refractors and SCTs, an auxiliary adaptation ring and a T-2 locking ring with lever.\u003c\/p\u003e","products":[{"product_id":"baader-maxbright-ii-binoviewer-set","title":"Baader MaxBright II Binoviewer Set","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eModular design based on the Baader T-2 thread system\u003c\/li\u003e\n\u003cli\u003eOptional Glasspath Correctors provide 1.25x, 1.7x, and 2.6x magnification\u003c\/li\u003e\n\u003cli\u003eAccommodates both 1.25\" and 2\" nosepieces for universal telescope compatibility\u003c\/li\u003e\n\u003cli\u003eEnables comfortable, fatigue-free viewing with both eyes\u003c\/li\u003e\n\u003cli\u003eIncludes T-2 and Zeiss micro-bayonet adapters and a padded carrying case\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 MaxBright II Binoviewer Set\u003c\/h2\u003e\n\u003cp\u003eThe Baader MaxBright II Binoviewer Set adapts to nearly any telescope through its modular system of optional 1.25\" and 2\" nosepieces and native T-2 threads. Available Glasspath Correctors (GPCs) at 1.25x, 1.7x, and 2.6x ensure you can reach focus in refractors, Newtonians, and SCTs while providing multiple magnification steps from a single pair of eyepieces.\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 MaxBright II System: Ergonomics for Two-Eyed Viewing\u003c\/h3\u003e\n\u003cp\u003eViewing celestial objects with both eyes open reduces eye strain, improves comfort during long observing sessions, and can create a more immersive, almost three-dimensional impression on bright targets like the Moon and planets. The MaxBright II is engineered for this experience, featuring click-lock eyepiece holders and smooth diopter adjustment for a perfectly merged image. The binoviewer body is supplied with both T-2 and Zeiss micro-bayonet adapters, ready to integrate into complex visual or imaging trains.\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\u003eReach Focus with 1.25x, 1.7x, \u0026amp; 2.6x Glasspath Correctors\u003c\/h3\u003e\n\u003cp\u003eA binoviewer's prisms add significant length to the light path, which can prevent some telescopes—especially Newtonians—from reaching focus. Baader's Glasspath Correctors (GPCs) are designed to solve this by compensating for the optical path difference. They also act as a high-quality Barlow lens, with available factors of 1.25x, 1.7x, and 2.6x, effectively turning one pair of eyepieces into three different magnifications.\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\u003eUniversal Connectivity: 1.25\", 2\", and T-2 System Integration\u003c\/h3\u003e\n\u003cp\u003eThe core of the MaxBright II is its native female T-2 thread, making it the central component in Baader's Astro T-2 System. This allows for direct, secure, and perfectly centered connections to a vast range of accessories. Depending on the set purchased, you can attach a standard 1.25\" nosepiece, a rigid 2\" nosepiece for larger focusers, or thread it directly to other T-2 components like diagonals and filter changers for a completely customized optical 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\u003eBaader MaxBright II vs. Entry-Level Binoviewers\u003c\/h3\u003e\n\u003cp\u003eWhile more affordable binoviewers provide a good introduction to two-eyed astronomy, the MaxBright II is built as a long-term, adaptable system. Here are the key distinctions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Modularity:\u003c\/strong\u003e Entry-level models typically have a fixed 1.25\" nosepiece. The MaxBright II's T-2 thread system allows it to connect to virtually any focuser or accessory, providing a more rigid and versatile connection that can adapt as your equipment changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Correction:\u003c\/strong\u003e The Baader GPCs are engineered specifically for the MaxBright II to correct the optical path with minimal degradation. This is a critical advantage for achieving focus in \"fast\" optical systems like Newtonian reflectors, where entry-level units often struggle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade-Offs:\u003c\/strong\u003e The MaxBright II system represents a greater initial investment, and like all binoviewers, requires you to purchase two identical eyepieces. It also adds weight and length compared to a single eyepiece, which must be considered for mount balancing.\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 benefit of the Baader MaxBright II over a single eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is \u003cstrong\u003eobserving comfort\u003c\/strong\u003e. Using both eyes reduces strain and fatigue, allowing you to observe for longer periods. Many observers also report a more natural, immersive, or even \"3D-like\" view on bright, detailed objects like the Moon, Jupiter, Saturn, and bright globular clusters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a Glasspath Corrector (GPC) for my Baader MaxBright II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on your telescope. \u003cstrong\u003eNewtonian reflectors\u003c\/strong\u003e almost always require a GPC to reach focus. \u003cstrong\u003eRefractors and Schmidt-Cassegrains (SCTs)\u003c\/strong\u003e often have enough focuser travel to work without one, but a GPC can still be useful for adding magnification options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the different GPCs (1.25x, 1.7x, 2.6x) for the MaxBright II change my view?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe GPCs act like a Barlow lens, increasing magnification. With one pair of 25mm eyepieces, for example, you can achieve three distinct magnifications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25x GPC:\u003c\/strong\u003e Provides a modest power increase, ideal for wide-field scanning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.7x GPC:\u003c\/strong\u003e A great general-purpose increase for framing most deep-sky objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.6x GPC:\u003c\/strong\u003e Delivers high magnification suitable for detailed planetary, lunar, and double-star observation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow can I use the Baader MaxBright II with my 8\" f\/5 Newtonian reflector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor an 8\" f\/5 Newtonian, you will absolutely need a Glasspath Corrector to reach focus. The \u003cstrong\u003e1.7x GPC\u003c\/strong\u003e is an excellent starting point, as it provides enough inward focus correction for most Newtonians. You will also need a 2\" nosepiece to fit your telescope's focuser. The combination of the MaxBright II, the 1.7x GPC, and a 2\" nosepiece will create a robust setup for your reflector.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat eyepieces work best with the Baader MaxBright II for viewing Jupiter or the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor high-resolution planetary and lunar viewing with the Baader MaxBright II, you need two identical, high-quality eyepieces. Plössl or Orthoscopic designs in the \u003cstrong\u003e9mm to 15mm\u003c\/strong\u003e range are excellent choices. When combined with the 1.7x or 2.6x GPC, this focal length range will provide the high magnifications needed to resolve cloud bands on Jupiter or fine crater details on the Moon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" eyepieces with the Baader MaxBright II Binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Baader MaxBright II, like nearly all astronomical binoviewers, is designed to accept \u003cstrong\u003e1.25\" eyepieces only\u003c\/strong\u003e. The internal prisms and mechanics do not have a large enough clear aperture to accommodate the wider field stops of 2\" eyepieces.\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\u003eAvailable Configurations\u003c\/td\u003e\n\u003ctd\u003eBinoviewer only, Binoviewer w\/ 1.25\" nosepiece, Binoviewer w\/ 2\" nosepiece, Binoviewer w\/ 1:1.25 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:1.7 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:2.65 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:1.25 GPC and 2\" nosepiece, Binoviewer w\/ 1:1.7 GPC and 2\" nosepiece, Binoviewer w\/ 1:2.65 GPC and 2\" nosepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e1.28 (Binoviewer w\/ 1.25\" nosepiece)\u003cbr\u003e1.32 (Binoviewer w\/ 2\" nosepiece)\u003cbr\u003e1.30 (Binoviewer w\/ 1:1.25 GPC and 1.25\" nosepiece)\u003cbr\u003e1.33 (Binoviewer w\/ 1:1.7 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:2.65 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:1.25 GPC and 2\" nosepiece, Binoviewer w\/ 1:1.7 GPC and 2\" nosepiece, Binoviewer w\/ 1:1.2.65 GPC and 2\" nosepiece)\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\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_MaxBright_II_Binoviewer_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\"\u003eBaader Planetarium MaxBright II Binoviewer 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 Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Binoviewer only","offer_id":46318677655837,"sku":"BAA-2456460","price":698.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1.25\" nosepiece","offer_id":46318677688605,"sku":"BAA-2456460A","price":721.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 2\" nosepiece","offer_id":46318677721373,"sku":"BAA-2456460B","price":727.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.25 GPC and 1.25\" nosepiece","offer_id":46318677754141,"sku":"BAA-2456461","price":845.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.7 GPC and 1.25\" nosepiece","offer_id":46318677786909,"sku":"BAA-2456463","price":852.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:2.65 GPC and 1.25\" nosepiece","offer_id":46318677819677,"sku":"BAA-2456465","price":859.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.25 GPC and 2\" nosepiece","offer_id":46318677852445,"sku":"BAA-2456462","price":845.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.7 GPC and 2\" nosepiece","offer_id":46318677885213,"sku":"BAA-2456464","price":852.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.2.65 GPC and 2\" nosepiece","offer_id":46318677917981,"sku":"BAA-2456466","price":859.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-MaxBright-II-Binoviewer-Set-2456460-BINO-1__32027.1597110516.1280.1280.jpg?v=1684339926"},{"product_id":"baader-glasspath-corrector-for-maxbright-bino-and-mark-v","title":"Baader Glasspath Corrector for Maxbright Bino and Mark V","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects for insufficient back focus to allow binoviewer use\u003c\/li\u003e\n\u003cli\u003eAvailable in 1.25x, 1.7x, and 2.6x magnification factors\u003c\/li\u003e\n\u003cli\u003eRemoves prism-induced chromatic and spherical aberrations\u003c\/li\u003e\n\u003cli\u003eAttaches via Baader\/Zeiss ring dovetail or standard T-2 threads\u003c\/li\u003e\n\u003cli\u003eEnables multiple magnifications with a single pair of eyepieces\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 Glasspath Corrector for Maxbright \u0026amp; Mark V Binoviewers\u003c\/h2\u003e\n\u003cp\u003eThe Baader Glasspath Corrector is the essential component for using a binoviewer with telescopes that lack sufficient back focus, offering corrective factors of 1.25x, 1.7x, or 2.6x to push the focal plane outwards. This multi-coated lens system simultaneously eliminates color errors introduced by the binoviewer's prisms, sharpening the view in fast optical systems. Its dual mounting system, featuring a Zeiss dovetail and a T-2 (M42x0.75) thread, ensures seamless integration with Baader Maxbright and Mark V binoviewers.\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\u003eAchieving Focus in Any Telescope with 1.25x, 1.7x, and 2.6x Correction\u003c\/h3\u003e\n\u003cp\u003eThe primary function of a Glasspath Corrector (GPC) is to solve the most common barrier to binoviewing: insufficient focuser in-travel. By extending the telescope's focal length, the GPC moves the focus point significantly outward, allowing you to achieve a sharp image where it was previously impossible. The three available factors—1.25x, 1.7x, and 2.6x—allow you to select the precise amount of correction your specific telescope requires.\u003c\/p\u003e\n\u003cp\u003eA Schmidt-Cassegrain might only need the 1.25x corrector, while a Newtonian reflector with very limited back focus will likely require the 1.7x or 2.6x model. This system also acts as a high-quality Barlow lens, effectively tripling the number of magnifications you can achieve with your existing eyepiece pairs.\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\u003eEliminating Prism-Induced Chromatic Aberration\u003c\/h3\u003e\n\u003cp\u003eBeyond its mechanical function, the Baader GPC provides a critical optical correction. The long path of light through a binoviewer's internal prisms can induce noticeable chromatic aberration (false color) and spherical aberration, especially in telescopes with focal ratios of f\/6 or faster. This softens planetary detail and adds distracting color fringing around bright objects like the lunar limb.\u003c\/p\u003e\n\u003cp\u003eThe Glasspath Corrector's specialized lens design counteracts these errors, restoring the high-contrast, color-pure image delivered by your telescope's main objective. The result is a significantly sharper, more satisfying two-eyed view of the Moon, planets, and double stars.\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\u003eDual T-2 and Zeiss Dovetail Mounting for Baader Binoviewers\u003c\/h3\u003e\n\u003cp\u003eDesigned for total system compatibility, the GPC features two mounting methods. It can be screwed directly into the Zeiss ring dovetail found on the Baader Mark V and MaxBright II binoviewers for a secure, direct connection. It also includes a T-2 (M42x0.75) clamping flange, allowing it to be inserted anywhere in a T-2 threaded accessory train.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePositional Flexibility:\u003c\/strong\u003e Placing the corrector in front of a T-2 star diagonal, rather than between the diagonal and the binoviewer, can reduce the required optical path by an additional 15mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconfigurable Optics:\u003c\/strong\u003e The lens elements can be removed from their cell and reversed to optimize performance between different binoviewer models, ensuring the convex lens surface always faces the telescope objective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e The GPC is engineered to attach directly to Baader T-2 diagonals and various 1.25\" or 2\" nosepieces, creating a rigid and versatile imaging train.\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\"\u003eWhich Baader Glasspath Corrector factor do I need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe choice depends entirely on your telescope's available back focus. \u003cstrong\u003e1.25x\u003c\/strong\u003e is for scopes with only a small focus deficit, like many refractors and SCTs. \u003cstrong\u003e1.7x\u003c\/strong\u003e is a versatile mid-range option for many reflectors. \u003cstrong\u003e2.6x\u003c\/strong\u003e provides the most correction and is typically required for Newtonian reflectors that have very little back focus to spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Glasspath Corrector work with the Baader Mark V binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. All three correctors are compatible. The 1.25x and 1.7x models may require the internal lens cell to be unscrewed and flipped for optimal correction with the Mark V, while the 2.6x model works natively. The corrector attaches directly to the Mark V's Zeiss ring dovetail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhere should I install the Baader Glasspath Corrector for the best results?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor the greatest reduction in required back focus, the corrector should be placed as far forward in the optical train as possible. Installing it on the front of your T-2 star diagonal, before the light path is bent 90 degrees, can save approximately 15mm of back focus compared to installing it between the diagonal and the binoviewer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy 8\" f\/10 SCT can't reach focus with a MaxBright II binoviewer. Which corrector should I get?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor most Schmidt-Cassegrain telescopes, which typically have generous back focus, the \u003cstrong\u003e1.25x Glasspath Corrector\u003c\/strong\u003e is the ideal starting point. It provides enough outward focus travel to solve the problem without increasing magnification unnecessarily, preserving a wider field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI see color fringing on Jupiter with my f\/5 Newtonian and a binoviewer. Will a Glasspath Corrector help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This is the second key function of the corrector. The color fringing you see is chromatic aberration introduced by the binoviewer's prisms, which is exaggerated in a \"fast\" f\/5 optical system. The Glasspath Corrector's optics are designed to cancel this specific error, resulting in a much sharper, color-pure image of the planet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Glasspath Corrector for anything besides a binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Because it uses the standard T-2 thread, you can use a Glasspath Corrector to solve focus issues with other accessories. For example, it can be used to bring a DSLR camera to focus on a telescope that would otherwise not have enough in-travel.\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\u003eMagnification Factors\u003c\/td\u003e\n\u003ctd\u003e1.25x, 1.7x, or 2.6x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Function\u003c\/td\u003e\n\u003ctd\u003eExtends focal point to achieve focus with binoviewers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Function\u003c\/td\u003e\n\u003ctd\u003eCorrects for prism-induced chromatic and spherical aberration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBinoviewer Threads\u003c\/td\u003e\n\u003ctd\u003eBaader \/ Zeiss M34 Ring Dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Threads\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eMaxBright, MaxBright II, and Mark V Binoviewers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eGlaspath Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible telescopes\u003c\/td\u003e\n\u003ctd\u003eRefractors, Schmidt-Cassegrain, Newton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e≥ -30 (1:1.25)\u003cbr\u003e-65 (1:1.7)\u003cbr\u003e-120 (1:2.6)\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 Glasspath Corrector\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (Selected Magnification)\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_Glasspath_Correctors_for_Binoviewers_Product_Information.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\"\u003eBaader Planetarium Glasspath Correctors for Binoviewers Product Information\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Astro_T-2_System_Parts_List.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\"\u003eBaader Planetarium Astro T-2 System Parts List\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Astro_T-2_System_Connections_Overview.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\"\u003eBaader Planetarium Astro T-2 System Connections Overview\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Mark_V_Grossfeld_Giant_Binocular_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\"\u003eBaader Planetarium Mark V Grossfeld Giant Binocular 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":"1:1.25","offer_id":44967300038941,"sku":"BAA-2456314","price":178.0,"currency_code":"CAD","in_stock":true},{"title":"1:1.7","offer_id":44967300071709,"sku":"BAA-2456316","price":185.0,"currency_code":"CAD","in_stock":true},{"title":"1:2.6","offer_id":44967300104477,"sku":"BAA-2456317","price":193.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Glasspath-Corrector-for-Maxbright-Bino-and-Mark-V-2456314-GLASS-1-1__03383.1597110520.1280.1280.jpg?v=1684340104"},{"product_id":"baader-auxillary-ring-for-adaptation-of-maxbright-ii","title":"Baader Auxillary-Ring for Adaptation of MaxBright II","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCreates the shortest possible connection for a MaxBright II Binoviewer\u003c\/li\u003e\n\u003cli\u003eDesigned for direct attachment to any Baader T-2 star diagonal\u003c\/li\u003e\n\u003cli\u003ePrevents unintended rotation and accidental detachment of the binoviewer\u003c\/li\u003e\n\u003cli\u003eFunctions as a slip ring to allow for interpupillary distance adjustment\u003c\/li\u003e\n\u003cli\u003eRequires Baader T-2 Locking Ring #2458271 for full functionality (sold separately)\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 Auxillary-Ring for Adaptation of MaxBright II\u003c\/h2\u003e\n\u003cp\u003eThe Baader Auxillary-Ring is a dedicated component engineered to create the most compact, rigid, and secure connection between a MaxBright II Binoviewer and any Baader T-2 star diagonal. This ring system solves the common issues of binoviewer rotation and instability by providing a direct, locked-in attachment that prevents any unintended movement during observation or eyepiece changes.\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\u003eSecure, Low-Profile MaxBright II to T-2 Diagonal Adaptation\u003c\/h3\u003e\n\u003cp\u003eThis ring enables the shortest possible adaptation of the MaxBright II directly onto a T-2 prism or mirror diagonal. Its primary function is to act as a slip ring, placed between the binoviewer body and the required T-2 locking ring. This clever design allows you to securely lock the binoviewer's rotational position while still permitting smooth adjustment of the interpupillary distance, ensuring both mechanical stability and user comfort.\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\u003eRequired Component: Baader T-2 Locking Ring (#2458271)\u003c\/h3\u003e\n\u003cp\u003eTo achieve the secure, rotation-proof connection, this Auxillary-Ring must be used in conjunction with the Baader T-2 Locking Ring (#2458271), which is sold separately. The locking ring threads onto the binoviewer's T-2 connection and is tightened against the auxillary ring, creating a firm lock. The locking ring's handle can be repositioned into one of three threaded holes, spaced 120° apart, to ensure it never obstructs your view or access to the eyepieces.\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\"\u003eWhat is the purpose of the Baader Auxillary-Ring for the MaxBright II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader Auxillary-Ring is designed to provide the shortest and most secure connection possible between a Baader MaxBright II Binoviewer and a Baader T-2 star diagonal. It prevents the binoviewer from rotating or accidentally unscrewing during use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need any other parts to use this Auxillary-Ring with my MaxBright II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYes, this part is not standalone.\u003c\/strong\u003e You must use it with the \u003cstrong\u003eBaader T-2 Locking Ring (#2458271)\u003c\/strong\u003e, which is sold separately. The Auxillary-Ring acts as a slip ring, and the Locking Ring provides the tension to lock the binoviewer in place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this ring system prevent my MaxBright II from rotating on my T-2 diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Auxillary-Ring sits between the binoviewer and the separate locking ring. Once you thread the binoviewer onto your T-2 diagonal, you tighten the locking ring against the Auxillary-Ring. This creates firm pressure that locks the entire assembly, preventing any rotation while still allowing interpupillary distance adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I still adjust the interpupillary distance on my MaxBright II with this ring installed?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Auxillary-Ring is specifically designed to function as a slip ring. This means that even when the connection to the diagonal is locked tight against rotation, the mechanism for adjusting the distance between the eyepieces on the MaxBright II remains fully functional.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader Auxillary-Ring work with non-Baader diagonals?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis ring is specifically designed for the Baader ecosystem, ensuring a perfect fit between the MaxBright II Binoviewer and Baader's T-2 star diagonals (both prism and mirror types). Compatibility with third-party diagonals is not guaranteed, as thread depths and tolerances can vary.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Baader Auxillary-Ring system on my MaxBright II and T-2 diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, ensure you have both this Auxillary-Ring and the required Baader T-2 Locking Ring (#2458271).\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemove any existing counter nut or dovetail ring from the binoviewer's T-2 thread.\u003c\/li\u003e\n\u003cli\u003eThread the Locking Ring onto the binoviewer's male T-2 thread, but don't tighten it.\u003c\/li\u003e\n\u003cli\u003ePlace the Auxillary-Ring between the Locking Ring and the binoviewer body, with the raised surface facing the binoviewer.\u003c\/li\u003e\n\u003cli\u003eScrew the entire assembly onto your Baader T-2 diagonal until it's snug.\u003c\/li\u003e\n\u003cli\u003eRotate the binoviewer to your desired orientation, then tighten the Locking Ring firmly against the Auxillary-Ring to lock it in place.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Adapter\u003c\/td\u003e\n\u003ctd\u003eSame-Thread Adapter, Variable Focusing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003efor Adaptation of MaxBright II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM34\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\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_MaxBright_II_Binoviewer_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\"\u003eBaader Planetarium MaxBright II Binoviewer 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":44967300301085,"sku":"BAA-2458272","price":15.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-Auxillary-Ring-for-Adaptation-of-MaxBright-II-1__32291.1597110525.1280.1280.jpg?v=1684340114"},{"product_id":"baader-t-2-locking-ring-w-lever-for-maxbright-ii","title":"Baader T-2 Locking Ring w\/ Lever for MaxBright II","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCreates a rigid, direct-thread connection for binoviewers\u003c\/li\u003e\n\u003cli\u003eEnables precise rotational adjustment and locking\u003c\/li\u003e\n\u003cli\u003eFeatures a repositionable lever for ergonomic comfort\u003c\/li\u003e\n\u003cli\u003eHelps shorten the optical path to achieve focus\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the MaxBright II Binoviewer\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 T-2 Locking Ring w\/ Lever for MaxBright II\u003c\/h2\u003e\n\u003cp\u003eThe Baader T-2 Locking Ring with Lever replaces the standard counter nut on a MaxBright II binoviewer, creating a solid, direct-thread connection to your T-2 star diagonal or focuser. This upgrade provides a shorter, more rigid optical train, ideal for achieving focus in demanding systems and ensuring your binoviewer remains securely fixed in any orientation. It is the definitive solution for eliminating flexure and achieving precise rotational alignment.\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\u003eDirect Connection for a Shorter, Rigid Optical Path\u003c\/h3\u003e\n\u003cp\u003eBy screwing your binoviewer directly onto a T-2 star diagonal or compatible focuser, this locking ring minimizes the total length of your imaging train. This shortened path is often critical for reaching focus in telescopes with limited back focus, such as Schmidt-Cassegrains. The rigid, all-threaded connection also eliminates any potential for sag or flexure that can occur with slip-fit adapters, keeping your optics perfectly aligned.\u003c\/p\u003e\n\u003cp\u003eThis secure attachment makes the locking ring an excellent choice for public observatories or outreach events. It prevents the binoviewer from being accidentally loosened or removed, ensuring equipment safety during frequent use.\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\u003eRotational Lock and Adjustable Lever for Ergonomic Control\u003c\/h3\u003e\n\u003cp\u003eThe primary function of the ring is to allow you to orient the binoviewer to the most comfortable viewing angle and then lock it firmly in place with the attached lever. This prevents unwanted rotation while you observe or adjust the interpupillary distance.\u003c\/p\u003e\n\u003cp\u003eFor added convenience, the control lever itself is repositionable. If it comes to rest in an awkward position or interferes with other equipment, you can unscrew it and move it to one of several threaded holes spaced around the ring's circumference, ensuring comfortable and unobstructed operation in any telescope configuration.\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\"\u003eWhat is the main purpose of the Baader T-2 Locking Ring for the MaxBright II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts main purpose is to replace the standard T-2 counter nut to create a more \u003cstrong\u003erigid, secure, and shorter\u003c\/strong\u003e connection between a MaxBright II binoviewer and a T-2 star diagonal or focuser. This allows for precise rotational positioning and helps in achieving focus on telescopes with limited back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this locking ring improve the connection over a standard T-2 counter nut?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard counter nut can sometimes loosen, allowing the binoviewer to rotate unexpectedly. The \u003cstrong\u003eBaader T-2 Locking Ring with Lever\u003c\/strong\u003e provides a much more positive and secure lock, completely preventing any rotational shift once tightened. This results in a connection that feels like a single, solid unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I still adjust the interpupillary distance on my MaxBright II with this ring installed?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The locking ring secures the rotational position of the entire binoviewer body on the telescope's optical axis. It does not interfere with the separate mechanism that allows you to adjust the distance between the eyepieces (interpupillary distance).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the Baader T-2 Locking Ring recommended for public outreach or observatory use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor public or permanent setups, security and robustness are key. The Baader T-2 Locking Ring creates a direct-threaded connection that cannot be accidentally loosened or removed like a standard slip-fit or compression ring adapter. This ensures the binoviewer stays securely attached, even with frequent handling by many different users.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat if the locking lever on the Baader T-2 Locking Ring ends up in an awkward position?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe lever is designed to be repositioned. It is threaded into the outer circumference of the ring. If it stops in a position that is hard to reach or blocks other accessories, you can simply unscrew it and move it to one of the other available threaded holes on the ring for better ergonomic placement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this locking ring help shorten the optical path when using my MaxBright II on an SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a significant advantage. By enabling the most direct connection possible and eliminating the space taken up by other adapters, the \u003cstrong\u003eBaader T-2 Locking Ring\u003c\/strong\u003e helps shorten the overall light path. This can be the critical factor that allows a binoviewer to reach focus on a Schmidt-Cassegrain (SCT) or other telescope with limited back focus.\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\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBaader MaxBright II Binoviewer and T-2 System Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eRotational Locking and Secure Threaded Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Adapter\u003c\/td\u003e\n\u003ctd\u003eSame-Thread Adapter, Variable Focusing\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\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_MaxBright_II_Binoviewer_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\"\u003eBaader Planetarium MaxBright II Binoviewer 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":44967300333853,"sku":"BAA-2458271","price":53.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-T-2-Locking-Ring-with-Lever-for-MaxBright-II-1__16481.1597110527.1280.1280.jpg?v=1684340128"},{"product_id":"baader-planetarium-glasspathcorrector-for-baader-binoviewer-with-zeiss-ring-dovetail-maxbright-ii-and-mark-v","title":"Baader Planetarium Glasspathcorrector for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAvailable in 1.25x and 1.7x magnification factors\u003c\/li\u003e\n\u003cli\u003eCorrects prism-induced color aberrations in fast telescopes\u003c\/li\u003e\n\u003cli\u003eExtends optical path to solve backfocus issues\u003c\/li\u003e\n\u003cli\u003eConnects via Zeiss ring dovetail\u003c\/li\u003e\n\u003cli\u003eCompatible with Baader MaxBright® II and Mark V Binoviewers\u003c\/li\u003e\n\u003cli\u003e1.25x for the widest fields, 1.7x (with T-2 clamping flange) for larger focus shortfalls\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\u003eGlasspathcorrector for Baader-Binoviewer with Zeiss ring dovetail (MaxBright® II and Mark V)\u003c\/h2\u003e\n\u003cp\u003eThe Baader Glasspathcorrector is a critical optical accessory designed to solve two fundamental challenges of binoviewing: it corrects prism-induced color aberrations in fast telescopes and extends the focal path to achieve focus. Available with a 1.25x or 1.7x magnification factor, the corrector attaches directly to the Zeiss ring dovetail on Baader's MaxBright® II and Mark V binoviewers, enabling sharp, color-pure stereo views in optical systems that otherwise lack sufficient backfocus.\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\u003eSolving Backfocus and Color Aberration with 1.25x or 1.7x Magnification\u003c\/h3\u003e\n\u003cp\u003eMany telescopes, particularly Newtonians and certain refractors, do not have enough inward focuser travel to accommodate the long light path of a binoviewer. The Glasspathcorrector pushes the focal plane outwards, allowing you to reach a sharp image without modifying your telescope. Simultaneously, it acts as a color corrector, neutralizing the chromatic aberration introduced by the binoviewer's prisms, which is most apparent in telescopes with fast focal ratios.\u003c\/p\u003e\n\u003cp\u003eBeyond its corrective properties, this accessory multiplies your eyepiece magnification by the selected factor. The 1.25x version alters your telescope's native focal length as little as possible, preserving nearly the full true field of your low-power eyepieces for large targets like the Andromeda Galaxy (M31). The 1.7x version effectively expands your eyepiece collection, providing higher-power views for planetary and lunar observation without needing to swap out eyepiece pairs.\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\u003eMounting the Corrector: Zeiss Dovetail \u0026amp; T-2 Versatility\u003c\/h3\u003e\n\u003cp\u003eDesigned for seamless integration, both versions of the Glasspathcorrector thread directly into the Zeiss ring dovetail found on the front of the Baader MaxBright® II and Mark V Giant Binoviewers. This threaded connection provides a rigid, flexure-free and perfectly collimated optical train, unlike solutions that stack 1.25\" nosepieces. On the 1.7x model, the lens cell is reversible, with the convex side always facing the telescope objective for correct optical performance.\u003c\/p\u003e\n\u003cp\u003eFor broader applications, the 1.7x unit also includes a T-2 clamping flange. This allows the corrector to be inserted between any male and female T-2 (M42x0.75) threaded connection, making it a universal backfocus solution for other accessories like DSLRs or specialized cameras that struggle to reach focus.\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\u003eGlasspathcorrector 1.25x vs. 1.7x: Choosing the Right Factor\u003c\/h3\u003e\n\u003cp\u003eBaader offers multiple Glasspathcorrectors, and the choice depends entirely on your telescope's available backfocus. The primary trade-off is between the amount of focus extension and the magnification increase.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlasspathcorrector 1.25x:\u003c\/strong\u003e This corrector provides a smaller shift in the focal plane. It is the ideal choice if your telescope is close to reaching focus but just needs a small amount of help, as most refractors and SCTs are. The lower magnification factor also results in a wider true field of view.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlasspathcorrector 1.7x:\u003c\/strong\u003e This model offers a more significant outward shift of the focal point. It is designed for telescopes with substantial backfocus shortages, such as most Newtonian reflectors, ensuring you can achieve a sharp image where the 1.25x model might fall short. The trade-off is a higher magnification and a correspondingly narrower field of view.\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\"\u003eWhy do I need a Glasspathcorrector for my Baader binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need a \u003cstrong\u003eGlasspathcorrector\u003c\/strong\u003e if your telescope cannot reach focus with a binoviewer attached. The long optical path of the binoviewer requires significant \"in-focus\" travel that many telescopes lack. This corrector pushes the focus point out, solving the problem. It also corrects for color fringing caused by the prisms, especially in fast (low f-ratio) telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich factor should I choose for my 8\" SCT and a MaxBright II binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSchmidt-Cassegrain telescopes (SCTs) typically have a large range of focus travel. The \u003cstrong\u003e1.25x\u003c\/strong\u003e lets you reach focus easily while keeping magnification low enough to frame the entire Orion Nebula (M42) with a pair of low-power eyepieces. The \u003cstrong\u003e1.7x\u003c\/strong\u003e provides a significant boost in magnification, which is excellent for detailed views of planets like Jupiter and Saturn, or for splitting tight double stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Glasspathcorrector attach to the binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe corrector threads directly into the \u003cstrong\u003eZeiss ring dovetail\u003c\/strong\u003e on the telescope-side of the Baader MaxBright® II or Mark V Giant Binoviewer; it is not compatible with binoviewers that use a standard 1.25\" or 2\" nosepiece interface. The 1.7x can also be placed within a T-2 threaded system using its clamping flange, typically in front of a T-2 star diagonal to save the maximum amount of optical path length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the main difference between the Baader 1.25x and 1.7x Glasspathcorrectors?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main difference is the amount of backfocus correction they provide.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e1.25x corrector\u003c\/strong\u003e is for telescopes that need only a small amount of help to reach focus, and gives a wider true field of view.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003e1.7x corrector\u003c\/strong\u003e is for telescopes with a significant backfocus shortfall.\u003c\/li\u003e\n\u003c\/ul\u003e\nChoose the 1.7x model if you have a Newtonian reflector or another telescope design known for limited backfocus.\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a Glasspathcorrector to bring my DSLR camera to focus on my Dobsonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a potential application of the 1.7x version, which includes a T-2 clamping flange. Many Newtonian telescopes like Dobsonians cannot reach prime focus with a DSLR. By inserting the \u003cstrong\u003eGlasspathcorrector 1.7x\u003c\/strong\u003e into the T-2 threaded adapter on your camera, you can extend the focal point outward enough to achieve a sharp image, effectively acting like a Barlow lens for imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes a Glasspathcorrector degrade the image quality?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, quite the opposite. The Glasspathcorrector is a high-quality optical element designed to \u003cstrong\u003eimprove\u003c\/strong\u003e the final image. It specifically corrects for color aberrations (chromatic aberration) that are introduced by the binoviewer's prisms, leading to sharper, more color-pure views than using a binoviewer without one in a fast telescope.\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\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eGlaspath Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible telescopes\u003c\/td\u003e\n\u003ctd\u003eRefractors, Schmidt-Cassegrain, Newton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM34, M42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e1.25x\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eGlasspathcorrector for Binoviewer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e1.25x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBinoviewer Compatibility\u003c\/td\u003e\n\u003ctd\u003eBaader MaxBright® II, Baader Mark V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-Side Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBinoviewer-Side Connection\u003c\/td\u003e\n\u003ctd\u003eZeiss Ring Dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e≥ -30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e1.7x\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eGlasspathcorrector for Binoviewer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e1.7x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBinoviewer Compatibility\u003c\/td\u003e\n\u003ctd\u003eBaader MaxBright® II, Baader Mark V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBinoviewer-Side Connection\u003c\/td\u003e\n\u003ctd\u003eZeiss Ring Dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdditional Connection\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42x0.75) clamping flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptics\u003c\/td\u003e\n\u003ctd\u003eMulti-coated, reversible lens cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eExtends optical path, corrects prism-induced color aberrations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification (x)\u003c\/td\u003e\n\u003ctd\u003e1 : 1.70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e-65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n  \u003cdiv class=\"DAV-section-center\"\u003e\n    \u003cp\u003eGlasspathcorrector with Zeiss Ring Dovetail in selected factor (1.25x or 1.7x) × 1; the 1.7x also includes a T-2 clamping flange\u003c\/p\u003e\n  \u003c\/div\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_Glasspath_Correctors_for_Binoviewers_Product_Information.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\"\u003eBaader Planetarium Glasspath Correctors for Binoviewers Product Information\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Astro_T-2_System_Parts_List.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\"\u003eBaader Planetarium Astro T-2 System Parts List\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Astro_T-2_System_Connections_Overview.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\"\u003eBaader Planetarium Astro T-2 System Connections Overview\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Mark_V_Grossfeld_Giant_Binocular_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\"\u003eBaader Planetarium Mark V Grossfeld Giant Binocular 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":"1.25x","offer_id":52913116283165,"sku":"BAA-2456314Z","price":178.0,"currency_code":"CAD","in_stock":true},{"title":"1.7x","offer_id":52913116315933,"sku":"BAA-2456316Z","price":185.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Glasspathcorrector-1-25x-for-Baader-Binoviewer-with-Zeiss-ring-dovetail-MaxBright-II-and-Mark-V-1_25d69e9f-e75d-40cd-80d4-aed3b62cd8dc.jpg?v=1789086397"}],"url":"https:\/\/davidastro.com\/collections\/baader-maxbright-ii-binoviewers.oembed","provider":"David Astro","version":"1.0","type":"link"}