{"title":"TeleVue Adapters","description":"\u003cp\u003eTeleVue adapters connect eyepieces, cameras and accessories to TeleVue focusers and other telescopes. A large part of the range is built around the 2.4\" system: accessory tubes from 1mm to 25.4mm, sold singly or as a set of six, plus T-ring and M54 camera adapters for 2.4\".\u003c\/p\u003e\u003cp\u003eVisual adapters include the Flat top and Equalizer HiHat 2\" to 1.25\" adapters, a Questar adapter, a flip-mirror and PMT T-ring adapters for Powermates.\u003c\/p\u003e","products":[{"product_id":"tele-vue-satin-hihat-adapter-2-inch-1-25-inch","title":"Tele Vue Satin HiHat Adapter- 2\" - 1.25\"","description":"","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880302877,"sku":"TV-ASF-8125","price":109.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Satin_HiHat_Adapter_1.jpg?v=1777515028"},{"product_id":"tele-vue-in-travel-adapter-2-inch-1-25-inch","title":"Tele Vue In-Travel Adapter - 2\" - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFunction: Reduces focuser in-travel requirements\u003c\/li\u003e\n\u003cli\u003eCompatibility: 2\" focusers and diagonals\u003c\/li\u003e\n\u003cli\u003eAccessory Size: 1.25\" eyepieces and accessories\u003c\/li\u003e\n\u003cli\u003eLocking Mechanism: Brass clamp ring\u003c\/li\u003e\n\u003cli\u003eMaterial: Black anodized aluminum\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\u003eReach Focus When Every Millimeter Counts\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue In-Travel Adapter is a precision-engineered 2\" to 1.25\" reducer designed for a single, critical purpose: to solve focusing problems in telescopes with limited in-travel. By minimizing the optical path length, this adapter allows you to bring 1.25\" eyepieces to a sharp focus in systems where standard adapters simply run out of room, making it an essential tool for specific reflector and imaging configurations.\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 the In-Travel Problem with a Low-Profile Design\u003c\/h3\u003e\n\u003cp\u003eMany Newtonian reflectors, especially when used for imaging or with certain coma correctors, require the focuser to be racked further in than a standard eyepiece adapter will allow. The Tele Vue In-Travel Adapter addresses this by positioning your 1.25\" eyepiece deeper inside the 2\" focuser drawtube. This reduction in optical path is often the difference between a soft, unfocused view and a crisp, perfectly sharp image.\u003c\/p\u003e\n\u003cp\u003eThis adapter is the right choice when you have a high-quality 1.25\" planetary eyepiece or filter that you want to use with a system that has marginal focus travel. It can save you from having to modify your telescope or purchase a new low-profile focuser. It is a simple, elegant solution to a common and frustrating optical problem.\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, Non-Marring Brass Clamp Ring\u003c\/h3\u003e\n\u003cp\u003eProtecting your valuable eyepieces is paramount. The In-Travel Adapter features Tele Vue's signature non-marring brass clamp ring, which provides a firm, 360-degree grip on the eyepiece barrel without leaving scratches or gouges. Unlike simple thumbscrew designs that push the eyepiece off-center, the clamp ring ensures perfect axial alignment every time.\u003c\/p\u003e\n\u003cp\u003eThis secure connection is critical for maintaining optical alignment, especially for imaging applications where any tilt can degrade performance at the edge of the field. The brass ring tightens smoothly and securely, giving you confidence that your accessory is locked in place and perfectly centered in the optical path.\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\u003eBuilt for Reliability\u003c\/h3\u003e\n\u003cp\u003eEvery component of the In-Travel Adapter is designed for performance and longevity. The main body is machined from solid aluminum and finished with a durable black anodizing. This matte black surface minimizes stray light reflections inside the focuser, helping to maintain maximum image contrast by preventing errant light from reaching the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe adapter also includes a helical-cut safety groove on the 2\" barrel. This feature engages with the focuser's locking screw to prevent the adapter and your eyepiece from suddenly slipping out if the screw is accidentally loosened. It is a small but vital detail that protects your equipment from a potentially damaging fall in the dark.\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\u003eComparative Perspective: Standard vs. In-Travel Adapter\u003c\/h3\u003e\n\u003cp\u003eChoosing the right adapter is about understanding your telescope's specific needs. Tele Vue offers several high-quality 2\" to 1.25\" adapters, each with a distinct purpose.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Standard Flat-Top Adapter (ACF-2125):\u003c\/strong\u003e The standard adapter is perfect for most refractors and SCTs, which typically have ample focus travel. The In-Travel Adapter is specifically for instruments, like many Newtonians, that are starved for in-focus travel. If you can already reach focus with a standard adapter, you do not need this one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Hi-Hat Adapter (BEC-0005):\u003c\/strong\u003e The Hi-Hat adapter is designed to add significant height (out-travel) and is parfocal with Tele Vue's 2\" eyepieces. The In-Travel adapter does the exact opposite, consuming minimal back focus. They are solutions for opposite focusing challenges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe In-Travel Adapter is not an upgrade over a standard adapter; it is a specialized problem-solver. It is the component you reach for when your focuser hits its inward limit just before the stars snap into focus. For observers and imagers with specific Newtonian or custom-built telescopes, it is an indispensable piece of kit.\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\"\u003eWhen do I need the In-Travel Adapter instead of a standard 2\" to 1.25\" adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need the In-Travel Adapter if your telescope cannot reach focus with a 1.25\" eyepiece because the focuser hits its innermost limit. This is most common with Newtonian reflectors, especially when used with coma correctors like the Paracorr.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter scratch my eyepiece barrels?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. It uses a soft, non-marring brass clamp ring that tightens around the eyepiece, providing a secure grip without causing the scratches and gouges typical of single-screw locking mechanisms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much in-travel does this adapter save compared to a standard one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe In-Travel Adapter is designed to be as short as possible, saving approximately 0.75 inches (19mm) of back focus compared to Tele Vue's standard flat-top adapter. This is often enough to solve most in-travel issues.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter compatible with Tele Vue's Paracorr Type 2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is designed to work perfectly with the Paracorr Type 2. Using this adapter is often necessary to ensure 1.25\" eyepieces can reach focus in fast Newtonian telescopes equipped with the Paracorr.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter with filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Since 1.25\" filters thread directly onto the eyepiece barrel, this adapter's function is unaffected. You can use your filtered 1.25\" eyepieces without any issues.\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\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eAIT-2125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter Type\u003c\/td\u003e\n\u003ctd\u003eReducer, Low Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side\u003c\/td\u003e\n\u003ctd\u003e2\" Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" with Brass Clamp Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAnodized Aluminum, Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.4 oz (68 g)\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\"\u003eTele Vue In-Travel Adapter - 2\" to 1.25\"\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880335645,"sku":"TV-AIT-2125","price":87.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_In-Travel_Adapter_1.jpg?v=1777515024"},{"product_id":"tele-vue-flat-top-adapter-2-inch-1-25-inch","title":"Tele Vue Flat top Adapter - 2\" - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapter Type: 2\" to 1.25\" Reducer\u003c\/li\u003e\n\u003cli\u003eProfile: Flat Top (Low Profile)\u003c\/li\u003e\n\u003cli\u003eLocking Mechanism: Brass Clamp Ring\u003c\/li\u003e\n\u003cli\u003eCompatibility: 2\" Focusers and Diagonals\u003c\/li\u003e\n\u003cli\u003eEyepiece Format: 1.25\"\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\u003eSecure Your View, Preserve Your Gear with the Tele Vue Flat Top Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Flat Top Adapter is a precision 2\" to 1.25\" reducer engineered to provide a secure, non-marring connection while maximizing the in-travel of your telescope's focuser. It addresses a critical need for observers who use a mix of eyepiece formats or struggle to reach focus with specific optical trains. This adapter is built not just to hold an eyepiece, but to protect it while ensuring perfect alignment with the optical axis.\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 Low Profile \"Flat Top\" Advantage\u003c\/h3\u003e\n\u003cp\u003eMany standard adapters add significant length to the optical path, consuming precious focuser in-travel. The Tele Vue Flat Top Adapter is designed with a minimal profile, sitting nearly flush and consuming less back focus than taller \"high-hat\" style adapters. This design can be the difference between achieving a sharp focus and not, especially in Newtonians with limited travel or when using certain reducers and accessories.\u003c\/p\u003e\n\u003cp\u003eFor observers who frequently switch between 2\" and 1.25\" eyepieces, this adapter often allows the 1.25\" eyepieces to reach focus without needing to move the focuser drawtube significantly. This maintains a more consistent balance point and simplifies your observing workflow, keeping you at the eyepiece instead of adjusting hardware.\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\u003eProtect Your Eyepieces with a Brass Clamp Ring\u003c\/h3\u003e\n\u003cp\u003eA common frustration with simple adapters is the single thumbscrew that digs directly into the eyepiece barrel, leaving unsightly and potentially damaging score marks. Tele Vue solves this problem with an integrated brass clamp ring. When you tighten the thumbscrew, it compresses this soft metal ring, which then distributes the pressure evenly around the eyepiece barrel.\u003c\/p\u003e\n\u003cp\u003eThis mechanism provides a more secure, concentric grip than a direct screw, preventing your valuable eyepieces from tilting or wobbling in the focuser. More importantly, it ensures the chrome or anodized barrels of your eyepieces remain in pristine condition, preserving their value and ensuring a smooth fit every time you use them.\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\u003eSimple, Secure Thumbscrew Lock\u003c\/h3\u003e\n\u003cp\u003eThe adapter features a single, robust thumbscrew that is easy to operate even with gloves on during cold nights. The action is smooth and provides excellent tactile feedback, so you know exactly when the eyepiece is secure without over-tightening. This simple, reliable design is a hallmark of Tele Vue's approach: focus on the core function and execute it perfectly for years of trouble-free 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\u003eThe Ideal 2\" to 1.25\" Conversion\u003c\/h3\u003e\n\u003cp\u003eThis adapter is the essential link for using your 1.25\" Plössls, Delos, or Naglers in a 2\" diagonal or focuser. It maintains the precise optical alignment required for high-magnification planetary viewing and ensures your wide-field eyepieces are perfectly centered. The interior is blackened to reduce internal reflections, helping to preserve the high-contrast views your Tele Vue eyepieces are designed to deliver.\u003c\/p\u003e\n\u003cp\u003eOne trade-off of the low-profile design is that it can be slightly more difficult to grasp and remove from a tight focuser compared to taller adapters. However, for most users, the benefit of increased in-travel and a secure, non-marring grip far outweighs this minor handling consideration.\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\u003eChoosing the Right Tele Vue Adapter\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers several 2\" to 1.25\" adapters, and choosing the right one depends on your specific needs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat Top Adapter (ACF-2125):\u003c\/strong\u003e This is the best choice when focuser in-travel is limited, or you need the lowest possible profile. It is the go-to for many Newtonian owners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Hat Adapter (BEC-0005 \"Equalizer\"):\u003c\/strong\u003e This adapter is parfocal with Tele Vue's 2\" eyepieces. If you switch between 2\" and 1.25\" Tele Vue eyepieces and want to minimize refocusing, the High-Hat is the better option, assuming you have sufficient focuser travel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor most general-purpose applications where back focus is a concern, the Flat Top adapter provides the most versatile and secure solution.\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\"\u003eWhen do I need a flat top adapter instead of a high-hat?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose the flat top adapter when your telescope has limited focuser in-travel and you struggle to reach focus, especially with certain eyepieces or accessories. It consumes the least amount of back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter scratch my eyepiece barrels?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. It uses a brass clamp ring that tightens concentrically around the eyepiece barrel. This prevents the set screw from digging into the barrel, protecting your eyepieces from score marks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter threaded for 2\" filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the Tele Vue Flat Top Adapter is not threaded to accept 2\" (48mm) filters on its barrel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter make my 1.25\" eyepieces parfocal with my 2\" Tele Vue eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it will not. For that capability, you need the Tele Vue \"Equalizer\" Hi-Hat Adapter (BEC-0005), which is specifically designed to make most 1.25\" Tele Vue eyepieces nearly parfocal with their 2\" counterparts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter with non-Tele Vue eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this adapter will work perfectly with any standard 1.25\" eyepiece, filter, or accessory, regardless of the brand.\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\u003eProduct Number\u003c\/td\u003e\n\u003ctd\u003eACF-2125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eReducer Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side\u003c\/td\u003e\n\u003ctd\u003e2\" Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" Receptacle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Mechanism\u003c\/td\u003e\n\u003ctd\u003eBrass Compression Ring with Thumbscrew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile\u003c\/td\u003e\n\u003ctd\u003eLow (Flat Top)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAnodized Aluminum Body, Brass Ring\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\"\u003eTele Vue Flat Top Adapter - 2\" to 1.25\"\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880368413,"sku":"TV-ACF-2125","price":87.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Flat_Top_Adapter_1.jpg?v=1777515022"},{"product_id":"tele-vue-equalizer-hihat-adapter-2-inch-1-25-inch","title":"Tele Vue Equalizer HiHat Adapter - 2\" - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFunction: Balances telescope when switching between 2\" and 1.25\" eyepieces\u003c\/li\u003e\n\u003cli\u003eCompatibility: 2\" focusers and diagonals\u003c\/li\u003e\n\u003cli\u003eEyepiece Size: Accepts 1.25\" eyepieces\u003c\/li\u003e\n\u003cli\u003eMechanism: Brass clamp ring\u003c\/li\u003e\n\u003cli\u003eMaterial: Solid bronze\u003c\/li\u003e\n\u003cli\u003eWeight: Adds 12 oz (0.34 kg)\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\u003eKeep Your Balance: The Tele Vue Equalizer Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Equalizer Hi-Hat Adapter is a precision-machined counterweight and adapter designed to solve a common frustration for observers: the need to rebalance a telescope when switching between heavy 2-inch and lightweight 1.25-inch eyepieces. By matching the weight of your smaller eyepieces to their larger counterparts, the Equalizer eliminates interruptions to your observing flow, keeping your target centered and your mount tracking smoothly.\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\u003eEngineered Mass for Seamless Transitions\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Equalizer is its 12-ounce solid bronze body. This specific mass is no accident; it is engineered to approximate the weight of Tele Vue's larger 2-inch eyepieces. When you swap a heavy 2-inch Nagler or Panoptic for a small 1.25-inch Plössl housed in the Equalizer, the change in the telescope's center of gravity is minimal. This prevents the sudden tube drift that can throw your target out of the field of view, a critical benefit for Dobsonian users and anyone with a carefully balanced equatorial mount.\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, Non-Marring Brass Clamp Ring\u003c\/h3\u003e\n\u003cp\u003eTo protect your investment in quality eyepieces, the Equalizer uses a soft brass clamp ring instead of a simple set screw. As you tighten the lock screw, the ring compresses evenly around the eyepiece barrel. This provides a more secure, centered grip and prevents the scratches and gouges that set screws can inflict on the barrel's surface, preserving the condition and value of your 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\u003eStandard 2-Inch Barrel for Universal Fit\u003c\/h3\u003e\n\u003cp\u003eThe adapter features a standard 2-inch barrel, ensuring it fits perfectly into any 2-inch focuser, diagonal, or Powermate. The barrel is machined with a safety undercut, a groove that helps prevent the adapter from accidentally slipping out of the focuser if the locking screw becomes loose. This small detail provides peace of mind when you have your favorite eyepiece installed.\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\u003eMaintaining Focus with Parfocal Design\u003c\/h3\u003e\n\u003cp\u003eBeyond its function as a counterweight, the Equalizer is also a \"Hi-Hat\" adapter designed to make your eyepiece sets nearly parfocal. It raises the shoulder of a typical 1.25-inch eyepiece so its focal point aligns more closely with most Tele Vue 2-inch eyepieces. The result is that you will only need a minor turn of the focus knob when switching formats, saving valuable time you would otherwise spend hunting for 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\u003eWorkflow and Limitations of the Equalizer\u003c\/h3\u003e\n\u003cp\u003eImagine observing the entire Veil Nebula with a 2-inch wide-field eyepiece, then wanting to zero in on a filamentary detail with a high-power 1.25-inch planetary eyepiece. With the Equalizer, you simply swap the eyepiece assembly. Your Dobsonian stays put, requiring no brake adjustment or manual nudging to fight tube drift. This fluid workflow keeps your attention on the object, not on the mechanics of your telescope.\u003c\/p\u003e\n\u003cp\u003eThe primary trade-off is the added weight. While 12 ounces is the point, it does contribute to the total payload on your focuser and mount. For very small telescopes or mounts already operating at their weight limit, this additional mass is a factor to consider. However, for most setups designed to handle 2-inch accessories, the benefit of stable balance far outweighs the modest increase in total load.\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 Dobsonian User's Best Friend\u003c\/h3\u003e\n\u003cp\u003eFor observers using Dobsonians or other alt-azimuth mounts without tracking, balance is everything. The Equalizer is an essential tool for maintaining that balance. By allowing you to switch from a low-power \"finder\" eyepiece in a 2-inch format to a high-power 1.25-inch eyepiece for detailed views without upsetting the scope's equilibrium, it transforms a potentially clumsy process into a quick, one-handed operation.\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 a Tele Vue Equalizer adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf your telescope dips or rises when you switch from a heavy 2\" eyepiece to a light 1.25\" one, the Equalizer solves this. It adds weight to your 1.25\" eyepieces, keeping the telescope balanced so you do not have to make adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Equalizer make my eyepieces parfocal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt helps significantly. The \"Hi-Hat\" design raises the smaller eyepiece, aligning its focal plane more closely with many Tele Vue 2\" models. You will likely only need a small focus adjustment, not a complete refocus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Equalizer just for Tele Vue eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it works with any brand of 1.25\" eyepiece. It is particularly effective for observers who have a mixed set of heavy 2\" and light 1.25\" eyepieces from any manufacturer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter scratch my eyepiece barrels?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it uses a brass clamp ring. This design tightens securely around the barrel without the marring and scratching caused by traditional set screws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Equalizer too heavy for my small telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter adds 12 ounces (0.34 kg). It is best suited for telescopes and focusers already designed to handle heavy 2\" eyepieces. For very small \"grab-and-go\" scopes, it may add excessive weight.\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\u003eProduct Number\u003c\/td\u003e\n\u003ctd\u003eBEC-0005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eWeight-balancing adapter, Parfocalizing adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e2\" Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" with brass clamp ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSolid bronze\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eAdds 12 oz (0.34 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight Added\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.5\" (12.7mm) to eyepiece shoulder\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\"\u003eTele Vue Equalizer Hi-Hat Adapter - 2\" - 1.25\"\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880401181,"sku":"TV-BEC-0005","price":123.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Equalizer_HiHat_Adapter_1.jpg?v=1777515022"},{"product_id":"tele-vue-questar-adapter-1-25-inch","title":"Tele Vue Questar Adapter - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts Questar telescopes to accept 1.25\" eyepieces\u003c\/li\u003e\n\u003cli\u003eConnection to Telescope: Questar Male Thread\u003c\/li\u003e\n\u003cli\u003eConnection to Accessory: 1.25\" Barrel with Brass Clamp Ring\u003c\/li\u003e\n\u003cli\u003eMechanism: Single Thumbscrew Lock\u003c\/li\u003e\n\u003cli\u003eMaterial: Machined Aluminum, Anodized Black\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\u003eManuals\/Downloads\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\u003eUnlock a Universe of Eyepieces for Your Questar Telescope\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Questar Adapter for 1.25\" eyepieces is a precision-machined component designed to bridge the gap between your classic Questar telescope and the vast world of modern accessories. This adapter threads directly onto the Questar's axial port, replacing the original eyepiece holder and allowing you to use any standard 1.25\" eyepiece, Barlow, or filter. It is the essential key to expanding your Questar's optical potential, enabling higher magnifications and wider fields of view than the original equipment allows.\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 Secure, Native Fit for Your Questar Telescope\u003c\/h3\u003e\n\u003cp\u003eThis adapter is not a generic, universal-fit solution. It features a male thread precisely machined to the exact specifications of the Questar telescope's rear axial port. This ensures a rigid, secure, and perfectly centered connection to your telescope's optical axis, eliminating any possibility of wobble or tilt that could degrade the image.\u003c\/p\u003e\n\u003cp\u003eThe benefit of this native-thread design is confidence. When you attach the adapter, you can be certain that your eyepieces are being held in perfect alignment with the Questar's legendary optics, preserving the sharpness and image quality the telescope is known for. It becomes a seamless extension of the instrument itself.\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\u003eAccess the Modern 1.25\" Eyepiece Standard\u003c\/h3\u003e\n\u003cp\u003eThe primary function of this adapter is to convert your Questar to the universally accepted 1.25\" accessory standard. This immediately gives you access to hundreds of high-performance eyepieces from Tele Vue and other manufacturers. You are no longer limited to the original proprietary eyepieces, which can be difficult to find and limited in performance.\u003c\/p\u003e\n\u003cp\u003eWith this adapter, you can finally use modern, long eye relief, wide-field eyepieces for comfortable and immersive views. It allows you to select the perfect focal length for any target, from high-power planetary eyepieces to wide-field options for deep-sky objects, fundamentally transforming the versatility of your Questar.\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\u003eProtect Your Accessories with a Non-Marring Brass Clamp Ring\u003c\/h3\u003e\n\u003cp\u003eCheaper adapters use a simple steel thumbscrew that digs directly into the eyepiece barrel, leaving unsightly scratches and gouges. The Tele Vue Questar Adapter incorporates a soft brass clamp ring inside the barrel. When you tighten the thumbscrew, this ring gently and uniformly compresses around the eyepiece, holding it securely without causing any cosmetic damage.\u003c\/p\u003e\n\u003cp\u003eThis is a critical feature for anyone who invests in high-quality eyepieces. It preserves the value and condition of your accessories, ensuring your collection remains pristine. The secure grip also prevents any accidental slippage, which is especially important when using heavier eyepieces or 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\u003eMaximized Contrast Through Internal Baffling\u003c\/h3\u003e\n\u003cp\u003eTele Vue understands that every internal surface in the light path is a potential source of reflection. To preserve the high-contrast views of the Questar, the interior of the adapter is machined with anti-reflection ridges and finished in a matte, non-reflective black. This baffling traps stray light that might otherwise bounce into the eyepiece and reduce image contrast.\u003c\/p\u003e\n\u003cp\u003eThe practical result is a darker background sky and more \"pop\" in the details of bright objects like the Moon and planets. By preventing internal reflections, the adapter ensures that the only light reaching your eye is the focused image from the telescope, maintaining the purity of the view.\u003c\/p\u003e\n\u003cp\u003eOne consideration for this adapter is the added optical length. While it allows for a wider range of eyepieces, the extra back focus it introduces may prevent some very long focal length 1.25\" eyepieces from reaching focus in a standard Questar. However, for the vast majority of planetary and medium-power eyepieces, this is not a limitation.\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\"\u003eWill this adapter work with any 1.25\" eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is designed to hold any standard 1.25\" eyepiece or accessory. The brass clamp ring provides a secure grip on all standard barrels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter add any magnification to my eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the adapter itself has no optical elements and does not change the magnification of your eyepieces. It only serves as a mechanical connection between the telescope and the accessory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I be able to reach focus with all my eyepieces using this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter adds some length to the optical path. While most standard eyepieces will reach focus without issue, some eyepieces with very unusual focal plane positions might have difficulty. This is rarely a problem with Tele Vue's own eyepiece lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is this better than a simple set screw adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe internal brass clamp ring tightens uniformly around your eyepiece barrel, holding it securely without leaving the scratches and gouges that a simple set screw causes. This protects your investment in quality eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter difficult to install on my Questar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is simple. You just unthread the original Questar eyepiece holder from the telescope's rear axial port and thread the Tele Vue adapter on in its place. No tools are required.\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eAQE-0005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eQuestar-specific male thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Mechanism\u003c\/td\u003e\n\u003ctd\u003eSingle thumbscrew with internal brass clamp ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack anodized machined aluminum, brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.4 oz (40 g)\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\"\u003eTele Vue Questar Adapter - 1.25\"\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\/Tele_Vue_Questar_Adapter_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\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880433949,"sku":"TV-AQE-0005","price":139.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/TV-AQE-0005.jpg?v=1777746490"},{"product_id":"tele-vue-sct-adapter-2-inch","title":"Tele Vue SCT Adapter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAttaches to standard 2-inch Schmidt-Cassegrain rear cell threads (2\"-24 TPI)\u003c\/li\u003e\n\u003cli\u003eAccepts standard 2-inch diagonals, eyepieces, and accessories\u003c\/li\u003e\n\u003cli\u003eNon-marring brass clamp ring ensures a secure, concentric grip\u003c\/li\u003e\n\u003cli\u003eDual thumbscrews provide redundant locking for heavy accessories\u003c\/li\u003e\n\u003cli\u003eMachined from black anodized aluminum for durability\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\u003eA Rock-Solid Foundation for Your SCT Optics\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue SCT Adapter (ACC-0003) is a fundamental upgrade for any Schmidt-Cassegrain telescope owner, replacing the often-unstable stock visual back with a secure, precisely machined connection. This adapter creates a rigid, threaded link between your telescope and your 2-inch accessories, forming the reliable foundation your optical train deserves. It eliminates the flexure and potential for misalignment that can compromise both visual observation and critical imaging.\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-Threaded Stability for SCTs\u003c\/h3\u003e\n\u003cp\u003eUnlike simple slip-in adapters that rely on a single set screw, the Tele Vue adapter threads directly onto the 2-inch rear cell of your Meade or Celestron SCT. This direct, metal-to-metal threaded connection creates a single, rigid unit with the telescope tube itself. The immediate result is an elimination of the wobble and sag that plagues standard visual backs, especially when using heavier 2-inch diagonals, large wide-field eyepieces, or an imaging camera.\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 Non-Marring Brass Clamp Ring Advantage\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the adapter is Tele Vue's signature brass clamp ring mechanism. When you tighten the thumbscrews, they press on this internal ring, which then applies uniform pressure around the entire circumference of your accessory's barrel. This design provides a far more secure grip than a single screw tip and, crucially, prevents the gouging and scratching that can damage the barrels of your expensive diagonals and eyepieces.\u003c\/p\u003e\n\u003cp\u003eThis concentric grip also ensures your accessories are perfectly centered in the optical path. By preventing the slight tilt induced by a direct screw, the adapter helps maintain the integrity of your telescope's collimation. This means you are seeing the sharpest, highest-contrast views your SCT is capable of producing, without any degradation from mechanical slop.\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 Locking with Dual Thumbscrews\u003c\/h3\u003e\n\u003cp\u003eThe use of two thumbscrews provides a redundant and balanced locking force. For visual observers using heavy accessories like a 2-inch diagonal with a Tele Vue Nagler or Ethos eyepiece, this dual-screw system offers peace of mind. For astrophotographers, it ensures the camera and any attached correctors remain fixed throughout a long imaging session, preventing rotational drift or tilt as the telescope tracks across the sky.\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\u003eMinimal Profile for Back-Focus Conservation\u003c\/h3\u003e\n\u003cp\u003eTele Vue designed the SCT adapter to add minimal length to the optical path. This efficiency is critical for SCT users, particularly imagers who need to manage a precise back-focus distance for focal reducers, flatteners, or off-axis guiders. The adapter provides a secure connection without consuming an excessive amount of precious back-focus, allowing more flexibility in your imaging train configuration.\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 Trade-Off: Simplicity for Stability\u003c\/h3\u003e\n\u003cp\u003eThis adapter is engineered for one primary purpose: to provide the most rigid, stable connection possible. It does not offer features like quick-release mechanisms or rotation. The trade-off is deliberate. For observers and imagers who prioritize optical alignment and mechanical stability above all else, the Tele Vue SCT Adapter is the correct and definitive choice. It is a set-and-forget component that simply holds your equipment in perfect alignment, night after night.\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\"\u003eWill the Tele Vue SCT adapter fit my Celestron or Meade telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this adapter is designed to fit the standard 2-inch diameter male thread (2\"-24 TPI) found on the rear cell of most modern Schmidt-Cassegrain telescopes from Celestron and Meade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this better than the visual back included with my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe stock visual backs often use a simple single-screw, slip-fit design which is prone to wobble and can cause tilt. The Tele Vue adapter threads directly to the telescope and uses a brass clamp ring for a much more rigid, secure, and concentric connection that preserves optical alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is a brass clamp ring and why does it matter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA brass clamp ring is an internal ring that tightens around your accessory barrel, providing a 360-degree grip. This prevents the thumbscrews from directly scarring your expensive eyepieces and diagonals, and it holds them more securely and in better alignment than a single screw tip.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Tele Vue SCT adapter add much length to the optical path?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it is designed to be very low profile. It adds minimal length, which helps conserve the critical back-focus distance needed for imaging accessories like focal reducers and off-axis guiders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter with a focal reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Typically you would thread your focal reducer onto the SCT's rear cell first, and then thread the Tele Vue SCT Adapter onto the focal reducer. This provides a secure, non-flexing mount for your 2-inch diagonal or camera nosepiece.\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eACC-0003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e2\"-24 TPI Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Connection\u003c\/td\u003e\n\u003ctd\u003e2\" Barrel with Brass Clamp Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Mechanism\u003c\/td\u003e\n\u003ctd\u003eDual Thumbscrews\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum, Brass\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\"\u003eTele Vue SCT Adapter for 2\" Accessories\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880794397,"sku":"TV-ACC-0003","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_SCT_Adapter_1.jpg?v=1777515029"},{"product_id":"tele-vue-camera-adapter-2-inch","title":"Tele Vue T2 Camera Adapter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnection Type: Prime Focus Astrophotography\u003c\/li\u003e\n\u003cli\u003eTelescope Side Connection: 2\" Barrel\u003c\/li\u003e\n\u003cli\u003eCamera Side Connection: Male T-Threads (M42x0.75)\u003c\/li\u003e\n\u003cli\u003eMaterial: Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eLength: 2.1\" (53.3mm)\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\u003eA Rock-Solid Prime Focus Connection for Your Telescope\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Camera Adapter - 2\" (ACM-2000) provides a simple, secure, and optically clean link between your telescope's 2-inch focuser and your DSLR or dedicated astronomy camera. This is the fundamental component for prime focus astrophotography, a method that turns your telescope's main optics into your camera's primary lens. It is engineered not just to hold your camera, but to preserve the contrast and quality of the image your telescope delivers.\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-Inch Barrel Interface\u003c\/h3\u003e\n\u003cp\u003eThe adapter's 2-inch barrel slides directly into any standard 2-inch focuser, diagonal, or Barlow lens. Machined from solid aluminum and anodized black, it ensures a non-slip, mar-free fit. This larger format is a significant advantage over 1.25-inch adapters, as it minimizes the potential for vignetting, especially with larger camera sensors like APS-C or full-frame, ensuring the image circle from your telescope fully illuminates the sensor.\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 T-Thread Camera Connection\u003c\/h3\u003e\n\u003cp\u003eThe top of the adapter features industry-standard male T-threads (M42x0.75). This universal connection allows you to attach any camera body by using a T-ring specific to your camera's lens mount (e.g., Canon EOS, Nikon F, Sony E). This modular design means you only need one adapter for your telescope, and you can switch between different camera bodies just by changing the T-ring, making it a versatile and future-proof part of 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\u003eInternal Light Control for High Contrast\u003c\/h3\u003e\n\u003cp\u003eA simple tube is not enough for quality astrophotography. The interior of the Tele Vue Camera Adapter is fully blackened and features machined baffling. This design actively traps and absorbs off-axis stray light that can otherwise reflect off interior surfaces and reduce image contrast. This meticulous attention to internal reflection control is what separates a high-quality adapter from a basic one, resulting in images with darker backgrounds and more vibrant nebulosity and galactic detail.\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 and Flush T-Ring Seating\u003c\/h3\u003e\n\u003cp\u003eThe adapter includes a recessed stop at the top of the T-threads. When you screw on your T-ring, this feature provides a solid, flat shoulder for it to rest against. This ensures a perfectly flush, secure fit that is orthogonal to the optical axis. The benefit is a reduction in the potential for camera tilt, which can cause misshapen stars in the corners of your images, a critical factor for achieving sharp, consistent focus across the entire frame.\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\u003eChoosing the Right Imaging Method\u003c\/h3\u003e\n\u003cp\u003eThis adapter is designed for prime focus photography, which is ideal for capturing wide-field deep-sky objects like the Andromeda Galaxy or the Orion Nebula at your telescope's native focal length. It is not an eyepiece projection adapter, which is used for high-magnification planetary imaging. For observers who want the most direct and highest-quality connection for deep-sky imaging, this adapter is the essential starting point.\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 Note on Focuser Travel\u003c\/h3\u003e\n\u003cp\u003eThe one trade-off with any prime focus adapter is the need for sufficient focuser \"in-travel.\" Because you are placing the camera sensor at the telescope's focal plane without an eyepiece, your focuser may need to rack in further than it does for visual use. Most modern telescopes have enough travel, but some older models or specific optical designs might require a low-profile focuser or different configuration to reach focus. Always check your telescope's focus range before setting up for an imaging session.\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 do I need besides this adapter to connect my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a T-ring that matches your specific camera's lens mount (e.g., Canon EF, Nikon F, Sony E-mount). The T-ring screws onto the threads of this adapter, and the other side bayonets onto your camera body just like a lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter cause vignetting with my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2-inch barrel is designed to minimize vignetting with larger sensors like APS-C and full-frame. While some vignetting may still occur depending on your telescope's optics and image circle, this adapter provides the largest clear aperture possible for this type of connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter itself is not threaded for filters. To use 2-inch filters, they must be threaded onto the nosepiece of your diagonal or another accessory placed before the adapter in the optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the right adapter for taking pictures of planets?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is for prime focus, which is low-magnification and best for deep-sky objects. For high-magnification planetary imaging, you would typically use a Barlow lens or a Tele Vue Powermate along with this adapter to increase the effective focal length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy telescope won't reach focus with this adapter. What's wrong?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePrime focus astrophotography often requires more focuser \"in-travel\" than visual observing. If you cannot rack the focuser in far enough to achieve focus, your telescope may not have enough back focus. This is a limitation of the telescope, not the adapter.\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eACM-2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side\u003c\/td\u003e\n\u003ctd\u003e2\" Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side\u003c\/td\u003e\n\u003ctd\u003eMale T-Thread (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e2.1\" (53.3mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.4 oz (68 g)\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\"\u003eTele Vue Camera Adapter - 2\"\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880892701,"sku":"TV-ACM-2000","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Camera_Adapter_2in_1.jpg?v=1777515020"},{"product_id":"tele-vue-1-25-inch-powermate-t-ring-adapter","title":"Tele Vue 1.25\" PowerMate T-Ring Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnection Side 1: Male T-Thread (M42x0.75)\u003c\/li\u003e\n\u003cli\u003eConnection Side 2: Female Thread for 1.25\" Powermate\u003c\/li\u003e\n\u003cli\u003eCompatibility: Tele Vue 2.5x and 5x 1.25\" Powermates\u003c\/li\u003e\n\u003cli\u003eFunction: High-Magnification Prime Focus Astrophotography\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\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\u003eForge a Rock-Solid Imaging Train for High-Power Planetary Photography\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 1.25\" PowerMate T-Ring Adapter is the essential link for high-magnification lunar, planetary, and solar imaging. This precision-machined adapter replaces the standard eyepiece holder on your 1.25\" Tele Vue Powermate, allowing you to connect a T-ring equipped camera directly to the Powermate's optics. The result is a rigid, flex-free imaging train that preserves the alignment of your entire optical system for the sharpest possible images.\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 Threaded Connection Advantage for Astrophotography\u003c\/h3\u003e\n\u003cp\u003eWhen imaging at the high magnifications provided by a Powermate, even microscopic shifts in alignment can degrade image quality. Standard eyepiece holders that use thumbscrews can introduce sag or tilt, especially with the weight of a DSLR or cooled astronomy camera. This adapter eliminates that possibility entirely by creating a direct, threaded connection between your camera and the Powermate body.\u003c\/p\u003e\n\u003cp\u003eThis mechanical rigidity is the key to achieving consistently sharp focus from edge to edge. Your camera sensor is held perfectly perpendicular to the optical axis, ensuring that the fine details on Jupiter's cloud bands or the delicate rilles on the Moon's surface are captured without any smearing or distortion caused by mechanical flexure.\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\u003eOptimized for the 1.25\" Tele Vue Powermate System\u003c\/h3\u003e\n\u003cp\u003eThis adapter is specifically designed to integrate seamlessly with the Tele Vue 2.5x (PMT-2513) and 5x (PMT-5126) 1.25\" Powermates. It threads directly onto the top of the Powermate's optical housing once the eyepiece holder is removed. This ensures the camera's sensor is placed at the correct distance to achieve the Powermate's specified magnification factor and optical performance.\u003c\/p\u003e\n\u003cp\u003eBy using this dedicated adapter, you are not just connecting your camera; you are completing an optical system as its designers intended. The internal surfaces are blackened to absorb stray light, protecting the high-contrast performance that Powermates are known for and preventing internal reflections from washing out subtle planetary detail.\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\u003eBuilding Your High-Magnification Imaging Train\u003c\/h3\u003e\n\u003cp\u003eTo use the adapter, simply unthread the eyepiece holder from the top of your 1.25\" Powermate. Then, thread the PTR-1250 adapter in its place. On the other side of the adapter, you will attach a T-ring that is specific to your camera's lens mount (e.g., Canon EOS, Nikon F, Sony E-mount).\u003c\/p\u003e\n\u003cp\u003eThis simple, direct configuration is far more reliable than inserting a generic 1.25\" nosepiece into the Powermate's eyepiece holder. It reduces the number of components, potential failure points, and sources of misalignment. This simplicity makes setup in the dark faster and gives you confidence that your equipment is securely assembled before you start your imaging run.\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\u003eAn Essential Tool for Serious Planetary Imagers\u003c\/h3\u003e\n\u003cp\u003eFor an observer looking to capture the highest-resolution views of our solar system, this adapter is not an optional accessory, it is a foundational component. It allows you to leverage the full optical potential of your telescope and Powermate by providing the secure, stable connection your camera requires. It is the right choice when you are chasing moments of excellent seeing and need your equipment to perform without compromise.\u003c\/p\u003e\n\u003cp\u003eThe small investment in a solid connection pays dividends in the quality of your final images. By eliminating a common source of optical error, the Tele Vue PowerMate T-Ring Adapter ensures your long nights of capturing data are rewarded with the best possible results.\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\"\u003eWill this adapter work with a 2\" Powermate or any other Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is designed exclusively for the Tele Vue 2.5x and 5x 1.25\" Powermates. It will not thread onto 2\" Powermates or any Tele Vue Barlows, which have different thread specifications. Use adapter model PTR-2200 for the 2\" 2x Powermate and PTR-4201 for the 2\" 4x Powermate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat else do I need to connect my DSLR camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a T-Ring that matches your specific camera brand and model (e.g., a Canon EOS T-Ring or a Nikon F-mount T-Ring). The T-Ring attaches to your camera body like a lens, and this Powermate adapter then threads onto the T-Ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter change the magnification of the Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed to place the camera sensor at the optimal distance to achieve the stated magnification of the Powermate (2.5x or 5x). While Powermate magnification can vary slightly with distance, this adapter provides the standard spacing for prime focus imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use this instead of a 1.25\" nosepiece on my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA threaded connection is significantly more secure and rigid than a nosepiece held by a thumbscrew. This prevents camera tilt and sag, which is a major cause of image softness and uneven focus in high-magnification astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter for visual observing with an eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter has T-threads for attaching a camera and cannot hold an eyepiece. To use an eyepiece with your Powermate, you must use the standard 1.25\" eyepiece holder that came with it.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003ePTR-1250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-Side Connection\u003c\/td\u003e\n\u003ctd\u003eMale T-Thread (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory-Side Connection\u003c\/td\u003e\n\u003ctd\u003eFemale Thread for 1.25\" Powermate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Powermates\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.5x (PMT-2513) and 5x (PMT-5126)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\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\"\u003eTele Vue 1.25\" PowerMate T-Ring Adapter\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\/Tele_Vue_Powermate_T-Ring_Adapter_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\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880925469,"sku":"TV-PTR-1250","price":87.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_1.25in_Powermate_T-Ring_Adapter_1.jpg?v=1777515016"},{"product_id":"tele-vue-pmt-2200-t-ring-adapter","title":"Tele Vue PMT-2200 T-Ring Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects DSLR\/Mirrorless Cameras to 2\" 2x Powermate\u003c\/li\u003e\n\u003cli\u003eStandard Male T-Ring Thread (M42x0.75)\u003c\/li\u003e\n\u003cli\u003eAttaches Directly to Powermate Top Lens Cell\u003c\/li\u003e\n\u003cli\u003eLow-Profile, Back-Focus Saving Design\u003c\/li\u003e\n\u003cli\u003eMachined Aluminum with Anodized Finish\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\u003eSecure Your Imaging Train: The Tele Vue Powermate T-Ring Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue PMT-2200 T-Ring Adapter is a purpose-built photographic accessory that creates a direct, threaded connection between your camera and the Tele Vue 2-inch 2x Powermate. This adapter is the key to transforming your high-performance visual amplifier into a robust telecentric barlow for high-magnification solar, lunar, and planetary imaging. It replaces thumbscrews and compression rings with a solid, secure link that preserves optical alignment and minimizes flexure.\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-Thread Powermate Connection\u003c\/h3\u003e\n\u003cp\u003eThe PMT-2200 is not a universal adapter. It is engineered specifically to thread directly onto the top lens cell of the 2-inch 2x Powermate once the original 2-inch eyepiece holder is removed. This direct attachment creates a single, rigid unit from your camera to the Powermate's optics, which is a critical foundation for sharp, high-resolution imaging. The secure connection prevents the camera from tilting or sagging, a common problem with less stable thumbscrew-based adapters.\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\u003eStandard T-Ring Interface for Universal Camera Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe adapter presents a standard male M42x0.75 T-thread on the camera side, the universal standard for astrophotography. This allows you to connect any DSLR or mirrorless camera body by using the appropriate T-ring for your specific camera brand (e.g., Canon EOS, Nikon F, Sony E). This simple, effective interface ensures your imaging setup is not locked into a single camera system, providing flexibility for future upgrades.\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\u003eLow-Profile, Back-Focus Saving Design\u003c\/h3\u003e\n\u003cp\u003eEvery millimeter of back focus is precious, especially when imaging through a telescope. The PMT-2200 is designed to be as short as possible, consuming a minimal amount of optical path length. This efficiency can be the difference between reaching focus or not, particularly on Newtonian reflectors or other systems with limited focuser in-travel. By replacing the bulky eyepiece holder, it positions your camera sensor closer to the ideal focal plane.\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 Trade-Off: Dedicated Functionality\u003c\/h3\u003e\n\u003cp\u003eThe primary strength of the PMT-2200 is also its main limitation: it is designed exclusively for the Tele Vue 2-inch 2x Powermate. It will not work with the 4x Powermate, any 1.25-inch Powermates, or standard Barlow lenses from Tele Vue or other manufacturers. This specificity ensures perfect compatibility and performance with its intended Powermate, but it is not a general-purpose accessory. Observers who use multiple amplification systems may need different adapters for each.\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\"\u003eWill this adapter work with my 4x Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter (PMT-2200) is designed only for the Tele Vue 2-inch 2x Powermate. The 2-inch 4x Powermate requires the PMT-4201 adapter, which has different threading.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach this to my 2x Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must first unthread and remove the chrome 2-inch eyepiece barrel from the top of your 2x Powermate. The PMT-2200 T-Ring Adapter then threads directly onto the exposed lens cell housing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat else do I need to connect my DSLR camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a T-ring that is specific to your camera's lens mount (e.g., a Canon EOS T-ring or a Nikon T-ring). The T-ring attaches to your camera body, and this PMT-2200 adapter then threads into the T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter change the 2x magnification of the Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, because the Powermate is a telecentric design, its magnification factor is nearly constant regardless of the camera sensor's distance. This adapter places the sensor at the correct distance to maintain the specified 2x amplification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a threaded connection better than a standard 1.25\" or 2\" nosepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor imaging, a fully threaded connection is significantly more secure. It eliminates any possibility of tilt or sag that can occur when a camera's weight is held only by a thumbscrew on a nosepiece, leading to sharper images across the frame.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003ePTR-2200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection to Amplifier\u003c\/td\u003e\n\u003ctd\u003eProprietary thread for 2\" 2x Powermate top cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection to Camera\u003c\/td\u003e\n\u003ctd\u003eMale T-Thread (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2\" 2x Powermate (PMT-2200) only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.8 oz (23 g)\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\"\u003eTele Vue PMT-2200 T-Ring Adapter\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\/Tele_Vue_Powermate_T-Ring_Adapter_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\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223880991005,"sku":"TV-PTR-2200","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2x_Powermate_T-Ring_Adapter_1.jpg?v=1777515018"},{"product_id":"tele-vue-pmt-4201-t-ring-adapter","title":"Tele Vue PMT-4201 T-Ring Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProduct Code: PTR-4201\u003c\/li\u003e\n\u003cli\u003eConnection Side 1: 4x Powermate (PMT-4201) Female Thread\u003c\/li\u003e\n\u003cli\u003eConnection Side 2: M42x0.75 T-Ring Male Thread\u003c\/li\u003e\n\u003cli\u003eMaterial: Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eFunction: Couples camera T-Ring to 4x Powermate for imaging\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\u003eSecure Your High-Magnification Planetary Images\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue PMT-4201 T-Ring Adapter is a dedicated accessory designed to provide a solid, direct-threaded connection between your camera's T-Ring and the Tele Vue 4x Powermate imaging amplifier. This adapter eliminates the instability of thumbscrew-based connections, ensuring your camera sensor remains perfectly parallel to the optical axis. This is critical for achieving sharp, high-resolution lunar and planetary images at the long effective focal lengths produced by the 4x Powermate.\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 Rock-Solid Imaging Train for Demanding Focal Lengths\u003c\/h3\u003e\n\u003cp\u003eWhen imaging at the magnifications provided by the 4x Powermate, even the slightest amount of flexure or tilt can ruin an image, blurring fine details in planetary cloud bands or lunar crater walls. The PMT-4201 T-Ring Adapter replaces the standard eyepiece holder on the Powermate, creating a single, rigid metal cylinder from the Powermate to your camera. This threaded connection prevents the camera from sagging or shifting, a common issue with heavier DSLRs or dedicated astronomy cameras that can overwhelm a simple compression ring.\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\u003eEngineered for the 4x Powermate System\u003c\/h3\u003e\n\u003cp\u003eThis is not a generic adapter. The internal female threads are precisely machined to match the lens housing of the Tele Vue 4x Powermate (model PMT-4201), ensuring a secure fit without damaging the Powermate's body. The male threads are the industry-standard M42x0.75 T-thread, providing universal compatibility with any camera-specific T-Ring on the market.\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\u003eSimplified Workflow and Perfect Centering\u003c\/h3\u003e\n\u003cp\u003eBy creating a direct, threaded connection, the PMT-4201 ensures your camera sensor is perfectly centered on the optical axis every time you set up. This eliminates the trial-and-error of centering the camera in a standard visual back. The result is a more efficient imaging workflow and the confidence that your optical train is mechanically sound, allowing you to focus on capturing the best possible data during moments of steady seeing.\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 Critical Note on Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe PMT-4201 T-Ring Adapter is designed exclusively for the 2-inch Tele Vue 4x Powermate. It is not compatible with the 2x Powermate, the 5x Powermate, or any of Tele Vue's Barlow lenses. This specificity ensures a perfect and secure fit for its intended purpose, but it is a critical limitation to be aware of before purchase. For other Powermate models, Tele Vue offers different, dedicated T-Ring adapters.\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\"\u003eWill this adapter work with my Tele Vue 2x Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter (PMT-4201) is specifically threaded for the 2-inch, 4x Powermate only. You will need the PTR-2200 adapter for the 2-inch, 2x Powermate or the PTR-1250 for 1.25-inch Powermates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need besides this adapter to connect my DSLR camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a T-Ring that is specific to your camera's lens mount (e.g., a Canon EOS T-Ring or a Nikon F-mount T-Ring). This adapter connects the T-Ring to the Powermate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter add any magnification or change the spacing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is a purely mechanical adapter. It is designed to hold the camera at the correct position determined by the Powermate's optical design and does not alter the 4x amplification factor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use this instead of just putting the camera's nosepiece into the Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUsing a nosepiece with a thumbscrew can introduce slight tilt, which is very damaging to image sharpness at high magnifications. This threaded adapter ensures a perfectly rigid and square connection, which is essential for planetary imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter made of plastic or metal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Tele Vue PMT-4201 T-Ring Adapter is machined from black anodized aluminum for durability and a secure, non-slip connection.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003ePTR-4201\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eFemale thread for 2\" 4x Powermate (PMT-4201)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eMale M42x0.75 T-Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTele Vue 4x Powermate (2-inch) ONLY\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\"\u003eTele Vue T-Ring Adapter for 4x Powermate\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223881122077,"sku":"TV-PTR-4201","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_4x_Powermate_T-Ring_Adapter_1.jpg?v=1777515019"},{"product_id":"tele-vue-flip-mirror-only-to-upgrade-older-models","title":"Tele Vue Flip-Mirror only (to upgrade older models)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMechanism: Kinematic, locking flip-mirror\u003c\/li\u003e\n\u003cli\u003ePrimary Port: Straight-through optical path\u003c\/li\u003e\n\u003cli\u003eSecondary Port: 90° reflected path with helical focuser\u003c\/li\u003e\n\u003cli\u003eFocuser Type: Non-rotating helical for orientation stability\u003c\/li\u003e\n\u003cli\u003eMaterial: Black anodized machined aluminum\u003c\/li\u003e\n\u003cli\u003eCompatibility: Designed for upgrading specific older Tele Vue systems\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\u003eRestore Your System's Instant-Switching Power\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Flip-Mirror (SFM-1005) is the genuine factory component for upgrading older Tele Vue systems, restoring the powerful capability to switch instantly between two different optical paths. This is not a standalone accessory, but a precision-machined module designed to bring modern workflow efficiency to classic Tele Vue setups. It allows you to move from a wide-field finding eyepiece to a high-magnification planetary camera or reticle eyepiece with a simple, decisive flick of a lever.\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 Kinematic Mechanism for Repeatable Precision\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this unit is a kinematic flip-mirror mechanism engineered for absolute positional accuracy. When you switch between the straight-through and 90-degree ports, the mirror seats into its detents with exacting precision. The practical result is that an object you center in one eyepiece remains centered in the second, eliminating the need to re-aim your telescope after switching views and saving valuable time on target.\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\u003eHigh-Fidelity First-Surface Mirror\u003c\/h3\u003e\n\u003cp\u003eThe system uses a first-surface mirror to redirect the light path, ensuring the image remains bright, sharp, and free of the ghosting or chromatic aberration that a prism could introduce. The mirror is optically flat and coated for high reflectivity, preserving the contrast and detail delivered by your telescope's main objective. When not in use, it flips completely clear of the primary light path, leaving an unobstructed straight-through view for your main camera or eyepiece.\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\u003eIndependent Focus for the Second Port\u003c\/h3\u003e\n\u003cp\u003eThe top 90-degree port features an independent helical focuser, a critical feature for achieving a parfocal setup. This allows you to pre-focus a guiding eyepiece, reticle, or secondary camera separately from your primary eyepiece. Once set, you can switch between the two paths knowing both will be in sharp focus, making it an ideal tool for \"find, center, and capture\" imaging workflows.\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\u003eNon-Rotating Focuser for Perfect Alignment\u003c\/h3\u003e\n\u003cp\u003eA significant advantage of the helical focuser design is that it does not rotate the accessory being focused. This is essential when using a reticle eyepiece for manual guiding or object centering, as your crosshairs will maintain their north-south alignment. For imaging, it means your camera's sensor orientation remains fixed, so you never have to correct for field rotation after a minor focus adjustment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSolid, Flexure-Free Housing\u003c\/h3\u003e\n\u003cp\u003eThe entire assembly is machined from a solid block of aluminum and anodized for durability. This single-piece construction provides a rigid, flex-free foundation for your accessories. Even with a moderately heavy eyepiece or a cooled CMOS camera attached to the top port, the unit maintains its alignment, ensuring the mechanical precision matches the optical quality of your system.\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 Definitive High-Power Workflow\u003c\/h3\u003e\n\u003cp\u003eImagine hunting for the Ring Nebula in a rich star field. With a low-power eyepiece in the straight-through position, you sweep the area and place the faint target in the center of the field. You flip the lever, and your view instantly switches to the top port, where your high-power eyepiece and UHC filter are waiting, already focused. The nebula snaps into view with enhanced contrast, perfectly centered and ready for detailed study, without ever touching a locking screw or swapping an eyepiece in the dark.\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\u003eAn Important Compatibility Note\u003c\/h3\u003e\n\u003cp\u003eThis is a specialized component, not a universal accessory. The Tele Vue Flip-Mirror (SFM-1005) is intended solely for upgrading or repairing specific, older Tele Vue systems that were designed to accept it. It does not have standard 2-inch or 1.25-inch barrels and will not attach to a typical telescope focuser or diagonal. It is the right choice only when you have a compatible Tele Vue body to integrate it with.\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 specific Tele Vue products does the SFM-1005 upgrade?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis unit is designed to upgrade older Tele Vue 2-inch diagonals and other legacy accessories that were built with a port to accept this specific flip-mirror module. It is not a standalone product and requires a compatible Tele Vue body for installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this to build my own custom flip-mirror system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is not recommended. The SFM-1005 is a component part with proprietary threading and dimensions designed to mate with specific Tele Vue products. It lacks standard adapters for general use with focusers or diagonals from other brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the helical focuser on the top port rotate my eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it is a non-rotating helical focuser. This is a key feature that ensures your reticle eyepiece's crosshairs or your camera's sensor will maintain their orientation as you adjust focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the mirror always in the light path?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. When you are using the straight-through light path, the mirror is flipped completely out of the way, providing an unobstructed view to your primary eyepiece or camera. It only enters the light path when you engage the 90-degree port.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this help with astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt allows you to center and focus on a target with a parfocal reticle eyepiece in the top port, then flip the mirror out of the way to begin exposing with your main imaging camera. This \"look-then-shoot\" capability simplifies target acquisition for small sensors.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eSFM-1005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eFlip-Mirror Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Path\u003c\/td\u003e\n\u003ctd\u003eStraight-through, unobstructed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Path\u003c\/td\u003e\n\u003ctd\u003e90-degree, first-surface mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Port Focuser\u003c\/td\u003e\n\u003ctd\u003eNon-rotating helical type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eMachined, black anodized aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eFor specific older-model Tele Vue accessories\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\"\u003eTele Vue Flip-Mirror Assembly\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223882629405,"sku":"TV-SFM-1005","price":48.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Flip-Mirror_1.jpg?v=1777515022"},{"product_id":"tele-vue-imaging-system-nosepiece-for-focuser-2-inch","title":"Tele Vue Imaging System Nosepiece for Focuser - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnection to Telescope: 2\" Barrel\u003c\/li\u003e\n\u003cli\u003eConnection to Camera Side: Tele Vue Imaging System Thread\u003c\/li\u003e\n\u003cli\u003eFilter Compatibility: Standard 2\" (48mm) Filter Threads\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eOptical Length: Varies with insertion depth\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\u003eManual\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\u003eThe Foundation for a Rock-Solid Imaging Train\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Imaging System Nosepiece for Focuser - 2\" (RAD-1074) is the essential starting point for building a rigid, high-performance imaging train with your Tele Vue refractor. This component replaces standard slip-fit adapters, providing a secure, threaded connection directly from your telescope's 2-inch focuser to the rest of your Tele Vue imaging accessories. Its purpose is to eliminate potential flexure and tilt, ensuring your camera sensor remains perfectly orthogonal to the optical axis.\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 Threaded Connection for Imaging\u003c\/h3\u003e\n\u003cp\u003eUnlike a standard 2-inch nosepiece that uses set screws and can introduce slight alignment errors, the RAD-1074 threads directly into the next component in your imaging system. This creates a single, rigid column from the focuser to your camera. For imagers, this is critical because it prevents the sag and tilt that can ruin long exposures by causing elongated stars in the corners of the frame.\u003c\/p\u003e\n\u003cp\u003eThis solid connection ensures that once you achieve perfect focus and framing, it stays that way throughout your imaging session. It is the bedrock on which the entire Tele Vue imaging system is built, providing the mechanical stability necessary for capturing sharp, high-resolution data from edge to edge.\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\u003eStandard 2-inch Focuser Interface\u003c\/h3\u003e\n\u003cp\u003eThe telescope side of the adapter is a standard 2-inch barrel, designed for a precise fit into the drawtube of any Tele Vue 2-inch focuser, as well as most other focusers that accept 2-inch accessories. The barrel is machined from high-grade aluminum with a smooth, anodized finish that minimizes wear on your focuser's compression ring. This universal fit makes it the primary connection point for beginning your Tele Vue imaging setup on a wide range of telescopes.\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\u003eMaximized Contrast with Anti-Reflection Control\u003c\/h3\u003e\n\u003cp\u003eImaging faint objects requires meticulous control of stray light. The interior of the RAD-1074 is fully blackened and features anti-reflection threads. These machined baffles trap off-axis light that enters the adapter, preventing it from reflecting off internal surfaces and reaching the camera sensor. The result is a darker background sky in your images, higher contrast on faint nebulosity, and the preservation of delicate detail that might otherwise be washed out.\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\u003eIntegrated 48mm Filter Threads\u003c\/h3\u003e\n\u003cp\u003eAt the front of the nosepiece barrel, you will find standard 48mm female threads. This allows you to mount any 2-inch astronomy filter, such as a light pollution, nebula, or luminance filter, at the very front of your imaging train. Placing the filter here is often ideal as it protects the entire optical train from dust and can help minimize reflections that sometimes occur when filters are placed closer to the sensor.\u003c\/p\u003e\n\u003cp\u003eOne trade-off of this design is that it is intended for a dedicated imaging setup. Because it is threaded, it is not a quick-change part for switching between visual observing and imaging. For observers who frequently swap eyepieces and cameras, a standard slip-fit adapter might offer more convenience, though at the cost of mechanical rigidity.\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 does the Tele Vue Imaging System Nosepiece connect to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2-inch barrel side inserts into your telescope's focuser. The other side has a specific thread designed to connect to Tele Vue Imaging System accessories, such as the Canon Wide T-Adapter (CWT-2070) or the Standard T-Ring Adapter (TRG-1072).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use this threaded nosepiece instead of a standard 2\" prime focus adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA threaded connection is mechanically superior for imaging. It creates a single solid unit with your camera and other accessories, completely eliminating the possibility of tilt or sag that can occur with adapters held by set screws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2-inch filters with the RAD-1074?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the front of the barrel (the part that goes into the focuser) is threaded to accept standard 2-inch (48mm) astronomy filters. This is an ideal position for a light pollution or broadband filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this part of achieving the 55mm back focus for my reducer or flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this nosepiece does not have a defined optical length and is not part of the 55mm back focus calculation. Its purpose is solely to adapt the focuser to the Tele Vue Imaging System threads. Back focus is measured from the flange of your specific reducer or flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this work with a non-Tele Vue telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt will work with any telescope that has a standard 2-inch focuser. However, the accessory side is designed specifically for the thread size and spacing of the Tele Vue Imaging System components.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eRAD-1074\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e2\" Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Connection\u003c\/td\u003e\n\u003ctd\u003eTele Vue Imaging System Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes, for 2\" \/ 48mm filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Baffling\u003c\/td\u003e\n\u003ctd\u003eAnti-reflection threading and blackening\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\"\u003eImaging System Nosepiece for Focuser - 2\"\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\"\u003eBottom Dust Cap\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\/Tele_Vue_NP101is_Operating_Guide.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 Imaging System Guide\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\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223883710749,"sku":"TV-RAD-1074","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Imaging_Nosepiece_2in_1.jpg?v=1777515024"},{"product_id":"tele-vue-canon-wide-t-adapter-w-bayonet-for-2-4-inch","title":"Tele Vue Canon Wide T Adapter w-Bayonet for 2.4\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnections: Canon EOS Bayonet (Camera Side) \/ Tele Vue 2.4\" Thread (Telescope Side)\u003c\/li\u003e\n\u003cli\u003eClear Aperture: 25% larger than standard T-rings\u003c\/li\u003e\n\u003cli\u003eApplication: Prime focus astrophotography\u003c\/li\u003e\n\u003cli\u003eCompatibility: Tele Vue \"is\" refractors and Imaging System accessories\u003c\/li\u003e\n\u003cli\u003eModel: CWT-2070\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\u003eManuals\/Downloads\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\u003eEliminate Vignetting for Full-Frame Canon Astrophotography\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Canon Wide T Adapter with Bayonet for 2.4\" (CWT-2070) is an essential component for any astrophotographer using a Canon EOS camera with a Tele Vue Imaging System telescope. It replaces the restrictive, standard T-ring with a direct, wide-aperture connection engineered to illuminate full-frame and APS-C sensors without compromise. This adapter ensures your camera captures the entire, unvignetted light cone delivered by your telescope's optics.\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 Wider Path for Unobstructed Light\u003c\/h3\u003e\n\u003cp\u003eA standard T-ring, with its 42mm T-thread opening, acts as a bottleneck, constricting the light path from your telescope's focuser to the camera sensor. This effect, known as vignetting, darkens the corners of your images and discards valuable signal. The Tele Vue Canon Wide T Adapter solves this by providing a 25% larger clear aperture, taking full advantage of the wide Canon bayonet mount to deliver even illumination from edge to edge.\u003c\/p\u003e\n\u003cp\u003eFor imagers using full-frame DSLRs or mirrorless bodies, this is not a minor improvement. It is the difference between a fully usable frame and one that requires aggressive cropping and flat-field correction. With this adapter, the faint outer details of galaxies and nebulae are preserved across the entire field of view, just as the telescope's optics intended.\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\u003eEngineered for the Tele Vue Imaging System\u003c\/h3\u003e\n\u003cp\u003eThis adapter is designed to integrate flawlessly into the Tele Vue ecosystem. The telescope side features the robust 2.4-inch thread common to all Tele Vue \"is\" refractors (like the NP-101is and NP-127is) and their family of Imaging System accessories. This threaded connection provides a rigid, flexure-free attachment point that is critical for long-exposure astrophotography.\u003c\/p\u003e\n\u003cp\u003eBy maintaining a secure, threaded train, you eliminate the potential for tilt and misalignment that can occur with slip-fit or compression-ring adapters. The result is a consistently sharp field with round stars, ensuring your optical system performs at its diffraction-limited best. The adapter connects directly to accessories like the Large Field Corrector (LCL-1069) or the 0.8x Reducer (NPR-2073) to achieve the correct back 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\u003eNative Canon EOS Bayonet Connection\u003c\/h3\u003e\n\u003cp\u003eThe camera side of the adapter is a precisely machined Canon EF bayonet mount. This allows your camera body to click and lock into place with the same security as a native Canon lens. No separate, generic T-ring is required, reducing complexity and potential sources of mechanical play in your imaging train.\u003c\/p\u003e\n\u003cp\u003eThis native connection is a significant upgrade over two-part T-ring and T-adapter combinations. The solid, one-piece design ensures your camera sensor remains perfectly orthogonal to the optical axis, a fundamental requirement for achieving sharp focus across the entire sensor. It is compatible with all Canon EOS DSLR cameras and mirrorless models when using a standard EF-to-RF mount adapter.\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\u003eMaximized Contrast Through Stray Light Control\u003c\/h3\u003e\n\u003cp\u003eLike all Tele Vue components, the interior of the Canon Wide T Adapter is engineered for maximum contrast. The internal surfaces are blackened and feature anti-reflection micro-baffles. This design traps stray light before it can reach the sensor and reduce the subtle contrast in faint deep-sky objects.\u003c\/p\u003e\n\u003cp\u003eThis attention to detail ensures that the high-contrast performance of your Tele Vue refractor is not degraded by internal reflections within the adapter. The background of your images will remain dark and neutral, allowing the faintest structures in your target to be captured with clarity.\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\u003eChoosing Your Camera Adapter\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers several adapters for their Imaging System, and choosing the right one depends on your camera and goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCanon Wide T Adapter (CWT-2070)\u003c\/strong\u003e: The ideal choice for any Canon EOS user with a Tele Vue \"is\" scope or 2.4\" accessory. It provides the largest possible aperture to prevent vignetting, especially on full-frame sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard T-Ring Adapter (TRG-1072)\u003c\/strong\u003e: A more universal option that accepts any brand-specific 42mm T-ring. However, it will introduce some degree of vignetting on sensors larger than APS-C format due to the smaller T-thread diameter. It is a workable solution but not optimal for full-frame cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNikon F Wide T Adapter (NWT-2073)\u003c\/strong\u003e: This is the direct equivalent of the CWT-2070, but designed for the Nikon F-mount. It provides the same anti-vignetting benefits for Nikon DSLR and Z-series (with FTZ adapter) users.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor Canon imagers seeking to extract the maximum performance from their Tele Vue optics, the CWT-2070 is the definitive connection.\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\"\u003eWill this adapter reduce vignetting on my full-frame Canon camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This is its primary design purpose. The Tele Vue Canon Wide T Adapter provides a 25% larger clear aperture than a standard T-ring, significantly reducing or eliminating vignetting on full-frame and APS-C sensors when used with Tele Vue's 2.4\" Imaging System.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter compatible with my non-Tele Vue telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed with a 2.4\" thread for Tele Vue \"is\" telescopes and accessories. To use it with a standard 2\" focuser, you would need the Tele Vue Imaging System Nosepiece for 2\" Focuser (RAD-1074), which converts the 2.4\" thread to a 2\" barrel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a separate T-ring with this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The CWT-2070 has an integrated Canon EOS bayonet mount, so it attaches directly to your camera body without the need for a separate T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this compare to the Tele Vue TRG-1072 Standard T-Ring Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe CWT-2070 (this product) has a much wider internal opening to prevent vignetting with large camera sensors. The TRG-1072 uses the standard, more restrictive 42mm T-thread and is better suited for smaller sensors or situations where vignetting is less of a concern.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this work with my Canon EOS R mirrorless camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it will work perfectly when you use the standard Canon EF-EOS R Mount Adapter that comes with your camera. The bayonet connection on the Wide T Adapter is for the Canon EF mount.\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\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eCWT-2070\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eCanon EOS EF Bayonet Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePrime Focus Astrophotography\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVignetting Performance\u003c\/td\u003e\n\u003ctd\u003eMinimized for full-frame sensors\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\u003cimg class=\"DAV-img-box\" alt='Tele Vue Canon Wide T Adapter w\/Bayonet for 2.4\"' src=\"\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTele Vue Canon Wide T Adapter w\/Bayonet for 2.4\"\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:\/\/www.televue.com\/engine\/TV3b_page.asp?id=53\u0026amp;Tab=_acc#CWT\" 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 Instructions\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\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223883743517,"sku":"TV-CWT-2070","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Canon_Wide_T_Adapter_1.jpg?v=1777515020"},{"product_id":"tele-vue-nikon-f-wide-t-adapter-w-bayonet-for-2-4-inch","title":"Tele Vue Nikon F Wide T Adapter w-Bayonet for 2.4\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnection to Telescope: Tele Vue 2.4\" Imaging System Thread\u003c\/li\u003e\n\u003cli\u003eConnection to Camera: Nikon F-mount Bayonet\u003c\/li\u003e\n\u003cli\u003eClear Aperture: \u0026gt;42mm (Wider than standard T-Ring)\u003c\/li\u003e\n\u003cli\u003eApplication: Full-Frame and APS-C Astrophotography\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\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\u003eIlluminate Your Full Frame: The Tele Vue Nikon F Wide T Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Nikon F Wide T Adapter for 2.4\" focusers is the definitive imaging connection for astrophotographers using Nikon cameras with Tele Vue's premier Imaging System refractors. This is not a generic adapter. It is an engineered component designed specifically to eliminate the primary bottleneck in the imaging train—the undersized 42mm T-ring—ensuring your full-frame sensor receives the complete, unvignetted field of view your telescope was designed to deliver.\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 Direct, Native Nikon Bayonet Mount\u003c\/h3\u003e\n\u003cp\u003eUnlike universal solutions that require a separate, generic T-ring, this adapter features an integrated, precision-machined Nikon F-mount bayonet. Your camera body clicks into place just as it would with a native Nikon lens, creating a solid, metal-to-metal connection. The immediate result is a reduction in potential tilt and flexure, preserving the perfect sensor alignment that is critical for capturing sharp stars across the flat field of a Tele Vue Petzval telescope.\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 2.4-inch Wide-Body Advantage for Imaging\u003c\/h3\u003e\n\u003cp\u003eThe core of this adapter is its \"Wide T\" design, which provides a clear aperture significantly larger than the 42mm opening of a standard T-ring. This oversized light path is engineered to match the large drawtube of Tele Vue's 2.4-inch focusers, found on the NP101is and NP127is. For an imager with a full-frame sensor (like the Nikon D850 or a Z-series camera with FTZ adapter), this means the light cone from the telescope isn't choked off, preventing the artificial vignetting that can darken the corners of your images and hide faint detail.\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 Rigid, Thread-On Telescope Connection\u003c\/h3\u003e\n\u003cp\u003eThis adapter threads directly onto the drawtube of the Tele Vue 2.4-inch focuser, creating a single, solid unit from the focuser to the camera sensor. This rigid connection is far more stable than solutions that use thumbscrews or compression rings to hold the camera. When your system is loaded with a camera and filter wheel, a thread-on connection is the most reliable way to prevent flexure that can distort star shapes, especially during long exposures at different orientations.\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\u003eMaximized Contrast Through Internal Baffling\u003c\/h3\u003e\n\u003cp\u003eEvery internal surface of the adapter is machined with anti-reflection threads and finished in a deep, non-reflective anodized black. This meticulous attention to stray light control is essential for high-contrast imaging. It ensures that off-axis light doesn't bounce off internal surfaces and onto your sensor, which could reduce the contrast of faint nebulosity and wash out the dark background of space.\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\u003eChoosing Your Imaging Connection: NWT-2073 vs. Standard T-Ring\u003c\/h3\u003e\n\u003cp\u003eMaking the right choice depends entirely on your camera's sensor size and your imaging goals. This is a specialized adapter with a clear purpose.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTele Vue Nikon Wide T Adapter (NWT-2073):\u003c\/strong\u003e This is the correct choice for imagers using full-frame (35mm format) Nikon DSLRs or mirrorless cameras on a Tele Vue scope with a 2.4\" focuser. Its purpose is to deliver even illumination to the corners of these large sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTele Vue Standard T-Ring Adapter (TRG-1072):\u003c\/strong\u003e For imagers using smaller APS-C sized sensors, the standard T-ring adapter is often sufficient, as the smaller sensor is less susceptible to vignetting from a 42mm opening. However, the NWT-2073 still offers a more rigid, integrated connection for any Nikon user on a compatible Tele Vue scope.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe critical limitation of this adapter is its specificity. It is designed only for Tele Vue telescopes equipped with the 2.4-inch Imaging System focuser. It will not fit standard 2-inch focusers from Tele Vue or other brands.\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 Final Link in a Perfect Imaging Train\u003c\/h3\u003e\n\u003cp\u003eWhen you attach your Nikon camera to a Tele Vue NP127is using the NWT-2073 adapter, you complete an optical train that is fully optimized from the objective lens to the sensor plane. Capturing the sprawling hydrogen-alpha clouds of the Sadr region or the full expanse of the Andromeda Galaxy becomes a matter of exposure, not a fight against equipment limitations. The even field illumination this adapter provides means less aggressive flat-field correction in post-processing and cleaner, more natural-looking final images that honor the quality of your optics.\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\"\u003eWill this adapter work with my Nikon Z-series mirrorless camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it will work perfectly when you use the Nikon FTZ or FTZ II adapter. The FTZ adapter securely converts the Z-mount to the F-mount of this adapter while maintaining the correct back-focus distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this Wide T adapter better than a standard Nikon T-ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard T-ring has an inner diameter of about 42mm (M42 thread). This adapter has a much larger opening designed for the Tele Vue 2.4\" focuser, which prevents vignetting (darkened corners) on full-frame sensors and provides a more rigid, direct connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter on a telescope that is not a Tele Vue?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This adapter is specifically designed to thread onto the proprietary 2.4-inch focuser drawtube of Tele Vue Imaging System telescopes like the NP101is and NP127is. It is not compatible with standard 2-inch focusers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I really need this for my APS-C Nikon camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile not strictly necessary to prevent vignetting on smaller APS-C sensors, it provides a much more rigid and secure connection than a standard T-ring held by a simple 2\" nosepiece. For serious imagers, this improved stability can reduce flexure and lead to sharper stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the back focus of the NWT-2073 adapter itself?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter is designed to place the Nikon F-mount's focal plane (the sensor) at the correct distance from the telescope's optics when attached. Nikon's F-mount has a flange distance of 46.5mm, and this adapter is machined to preserve that specification relative to the focuser drawtube.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eNWT-2073\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eNikon F-mount Bayonet (Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePrime Focus Astrophotography\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTele Vue NP101is, NP127is, and other scopes with 2.4\" focusers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.2 oz (91 g)\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\"\u003eTele Vue Nikon F Wide T Adapter w\/Bayonet for 2.4\"\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\"\u003eCamera Body Cap (Nikon F-mount)\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\"\u003eTelescope Side Dust Plug\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223883907357,"sku":"TV-NWT-2073","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Nikon_F_Wide_T_Adapter_1.jpg?v=1777515027"},{"product_id":"tele-vue-sbig-stl-camera-adapter-for-2-4-inch","title":"Tele Vue SBIG STL Camera Adapter for 2.4\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnection Side 1: Tele Vue 2.4\" Imaging System Thread\u003c\/li\u003e\n\u003cli\u003eConnection Side 2: SBIG STL-Series Camera Thread\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eOptical Length: 0.26\" \/ 6.6mm\u003c\/li\u003e\n\u003cli\u003eModel: STL-1071\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\u003eA Rock-Solid Connection for Your SBIG STL Camera\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue SBIG STL Camera Adapter for 2.4\" focusers is an essential component for astrophotographers seeking a direct, secure connection between their Tele Vue imaging refractor and an SBIG STL-series camera. This purpose-built adapter eliminates the flexure and potential misalignment common with generic, multi-part solutions. It creates a single, rigid imaging train for sharper stars and higher quality data.\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\u003eEngineered for the Tele Vue Imaging System\u003c\/h3\u003e\n\u003cp\u003eThis adapter is designed to integrate perfectly with the 2.4-inch focusers found on Tele Vue NP101is and NP127is telescopes. The large-diameter threaded connection ensures the adapter seats flush and square against the focuser drawtube. This rigidity is critical for maintaining optical alignment, preventing tilt that can elongate stars in the corners of your image, especially when using heavy cameras or filter wheels.\u003c\/p\u003e\n\u003cp\u003eBy threading directly onto the focuser, you bypass compression rings or thumbscrews entirely. This solid metal-on-metal contact means your camera and focuser behave as a single unit. The benefit is consistent, repeatable focus and framing, session after session, without the subtle shifts that can compromise long-exposure imaging.\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 Direct Mount for SBIG STL Cameras\u003c\/h3\u003e\n\u003cp\u003eThe camera-side of the adapter features the precise thread pattern required for the SBIG STL camera body and its compatible filter wheels, like the FW8-STL. This dedicated fit provides a secure attachment that will not loosen or sag as the telescope tracks across the sky. You can image with confidence, knowing your camera is held firmly on the optical axis.\u003c\/p\u003e\n\u003cp\u003eThis direct connection is a significant workflow improvement over universal adapters. You spend less time diagnosing equipment flexure and more time capturing photons. For imagers using these classic, high-performance CCD cameras, this adapter is the mechanically correct way to complete the 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\u003ePrecision Machining for Optical Purity\u003c\/h3\u003e\n\u003cp\u003eTele Vue manufactures the STL-1071 from a single billet of high-grade aluminum, ensuring maximum strength and minimal weight. The interior of the adapter is treated with a matte-black anodized finish and features anti-reflection threads. This treatment absorbs stray light, preventing internal reflections that can reduce image contrast and introduce artifacts into your astrophotos.\u003c\/p\u003e\n\u003cp\u003eWhile a simple component, the adapter's contribution to image quality is significant. It maintains the high-contrast performance of your Tele Vue refractor by ensuring that only light from your target reaches the sensor. This is one of those small, critical parts where precision manufacturing makes a visible difference in the final image.\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 Correct Back Focus\u003c\/h3\u003e\n\u003cp\u003eWith an optical length of 0.26 inches (6.6mm), this adapter is a key component in your back focus calculation. When used with Tele Vue's reducers or flatteners, this fixed length helps you place the SBIG STL sensor at the precise focal plane. The trade-off for this adapter's rigidity is its fixed length; it is not adjustable and is designed specifically for the published back focus requirements of Tele Vue optical systems with STL cameras.\u003c\/p\u003e\n\u003cp\u003eFor imagers building a portable or remote setup, this adapter's reliability is its greatest strength. It is a component you install once and trust completely, removing a significant variable from your imaging equation. It is the right choice when you prioritize mechanical stability over flexible, but less rigid, universal solutions.\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\"\u003eWill this adapter work with my SBIG STX or Aluma camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is specifically threaded for the SBIG STL-series camera body and its compatible filter wheels. Other SBIG cameras use different thread patterns and will require a different adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the only part I need to connect my STL camera to an NP127is?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter connects the camera to the 2.4\" focuser drawtube. Depending on your imaging goals, you may also need a field flattener (like the LCL-1069) or reducer (NPR-2073), which would be installed between the focuser and this adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter cause any vignetting?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the adapter is designed with a large internal diameter matched to the 2.4\" focuser and the large sensor of the STL cameras. It will not introduce any vignetting to the system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use this threaded adapter instead of a 2\" nosepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA threaded connection provides a much more rigid and secure attachment than a 2\" nosepiece held by thumbscrews. This prevents camera tilt and flexure, which is critical for achieving sharp stars across the entire field of view, especially with heavier cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical length of the STL-1071 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter adds 0.26 inches (6.6mm) of length to the optical path. This measurement is important for calculating the correct back focus distance when using a reducer or flattener.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eSTL-1071\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eSBIG STL-Series Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e0.26\" (6.6 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.4 oz (68 g)\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\"\u003eTele Vue SBIG STL Camera Adapter for 2.4\"\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884103965,"sku":"TV-STL-1071","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_SBIG_STL_Camera_Adapter_1.jpg?v=1777515029"},{"product_id":"tele-vue-standard-t-ring-adapter-for-2-4-inch","title":"Tele Vue Standard T-Ring Adapter for 2.4\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnection (Telescope Side): Tele Vue 2.4\" Female Thread\u003c\/li\u003e\n\u003cli\u003eConnection (Camera Side): Male T-Thread (M42x0.75)\u003c\/li\u003e\n\u003cli\u003eOptical Length: 0.26\" (6.6mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eCompatibility: Tele Vue NPis Telescopes and Imaging System accessories\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\u003c!-- TAB-MARKER-1: DESCRIPTION --\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\u003eThe Solid Foundation for Your Tele Vue Imaging Rig\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Standard T-Ring Adapter for 2.4\" (TRG-1072) is the essential, rock-solid link between your Tele Vue NPis telescope's focuser and your T-threaded astronomy camera or DSLR T-ring. This is not just a simple adapter; it is an engineered component designed to eliminate flexure and maintain precise optical alignment, ensuring your flat-field astrograph performs exactly as designed. It replaces potential weak points in your imaging train with a secure, threaded connection you can trust.\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 Secure 2.4-inch Imaging System Connection\u003c\/h3\u003e\n\u003cp\u003eAt the heart of Tele Vue's imaging platform is the large-format 2.4-inch focuser drawtube, designed to prevent vignetting with full-frame sensors. This adapter threads directly and securely onto that drawtube, or any other accessory in the Imaging System chain. This direct-thread approach creates a rigid, unified tube, removing the possibility of sag or tilt that can occur with thumbscrew-based adapters and ruin an otherwise perfect exposure.\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 T-Thread for Camera Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe output side of the adapter features a standard male T-thread (M42x0.75), the universal standard for astrophotography hardware. This allows you to directly connect most dedicated astronomy cameras from ZWO, QHY, and others, as well as the T-ring for your specific Canon, Nikon, or Sony DSLR\/mirrorless camera. This broad compatibility makes the TRG-1072 the primary building block for nearly any imaging setup with a Tele Vue refractor.\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\u003eEngineered for Minimal Back-Focus\u003c\/h3\u003e\n\u003cp\u003eEvery millimeter of back-focus is precious, especially when using reducers or flatteners that have strict spacing requirements. The TRG-1072 is designed with a minimal optical length of just 0.26 inches (6.6mm) when connected to other Imaging System accessories. This slim profile gives you maximum flexibility to insert other accessories like filter wheels or off-axis guiders into your imaging train without exceeding the critical back-focus distance of your optical system.\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\u003eDurable, Reflection-Free Construction\u003c\/h3\u003e\n\u003cp\u003eMachined from a single piece of aluminum and finished with a deep black anodizing, this adapter is built for durability and optical purity. The non-reflective internal surfaces are micro-baffled to trap any stray light that might enter the system, protecting the contrast of your images. This robust construction ensures that the adapter will not introduce any optical artifacts and will withstand years of use in the field.\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\u003eBuilding Your Imaging Train: An Example\u003c\/h3\u003e\n\u003cp\u003eImagine you are connecting a ZWO ASI2600MC Pro camera to your Tele Vue NP101is. You would thread the TRG-1072 directly onto the telescope's focuser drawtube. The camera, which typically has 17.5mm of back-focus and comes with its own set of T2 spacers, would then thread directly onto the male T-threads of this adapter. This simple, two-part connection provides a rigid, perfectly aligned imaging train ready for capturing deep-sky objects without fear of tilt or flexure.\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\u003eLimitations and Considerations\u003c\/h3\u003e\n\u003cp\u003eThe primary trade-off for this adapter's rigidity is its specificity. It is designed exclusively for the Tele Vue 2.4-inch Imaging System and will not connect to standard 2-inch focusers or accessories from other brands. It is a dedicated part for a dedicated system. For imagers who frequently switch between different telescope brands, this requires a brand-specific adapter for each setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c!-- TAB-MARKER-2: FAQ --\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the right adapter for my Tele Vue NP127is and ZWO camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the standard adapter for connecting any camera with female T-threads (M42x0.75) to the 2.4-inch focuser on a Tele Vue NPis series telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the TRG-1072 work with the Tele Vue 0.8x reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This adapter is a key component for building the correct spacing when using the NPR-2073 0.8x reducer. It typically threads onto the reducer, and your camera's T-ring or spacers then thread onto this adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between this and the Canon Wide T-Adapter (CWT-2070)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe TRG-1072 provides a generic male T-thread, requiring you to use a separate T-ring for your camera body. The CWT-2070 combines the adapter and a Canon EOS bayonet mount into a single, wider-aperture piece to better illuminate full-frame sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter cause any vignetting?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen used with cameras having APS-C or smaller sensors, the T-thread connection of this adapter will not cause vignetting. For full-frame (35mm) sensors, you may see slight corner darkening, and the Tele Vue Canon or Nikon Wide T-Adapters are recommended for a fully illuminated field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use this instead of a 2\" nosepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA threaded connection like the one this adapter provides is far more secure than a 2\" nosepiece held by thumbscrews. It completely eliminates any possibility of camera tilt or sag, which is critical for maintaining a perfectly flat field for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c!-- TAB-MARKER-3: SPECIFICATIONS --\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eTRG-1072\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eMale T-Thread (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e0.26\" (6.6 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e~38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.8 oz (51 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003c!-- TAB-MARKER-4: IN THE BOX --\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\"\u003eTele Vue Standard T-Ring Adapter for 2.4\"\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\u003c!-- TAB-MARKER-6: WARRANTY --\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884136733,"sku":"TV-TRG-1072","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Standard_T-Ring_Adapter_1.jpg?v=1777515029"},{"product_id":"tele-vue-m54-camera-adapter-for-2-4-inch","title":"Tele Vue M54 Camera Adapter for 2.4\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTelescope Connection: Tele Vue 2.4\" Imaging System Thread\u003c\/li\u003e\n\u003cli\u003eCamera Connection: M54x0.75 Male Thread\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eCompatibility: Tele Vue NP101is, NP127is, and other scopes with 2.4\" focusers\u003c\/li\u003e\n\u003cli\u003eFunction: Securely adapts M54-threaded accessories to the Tele Vue Imaging System\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\u003eThe Solid Foundation for Your Tele Vue Imaging System\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue M54 Camera Adapter for 2.4\" focusers is the essential, rock-solid link between your large-format Tele Vue refractor and your modern M54-threaded camera or filter wheel. This precision-machined adapter replaces potential weak points like compression rings and thumbscrews with a secure, fully-threaded connection. The result is an imaging train free from tilt and flexure, allowing your Tele Vue optics to deliver their full performance to your sensor.\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 Wide, Secure Connection to Your Telescope\u003c\/h3\u003e\n\u003cp\u003eThis adapter features the Tele Vue 2.4\" Imaging System thread, designed to integrate seamlessly with the large focusers on Imaging System (is) refractors like the NP101is and NP127is. This large-aperture, threaded connection is the key to preventing vignetting with full-frame sensors and eliminating the minute shifts that can ruin a long exposure. By threading directly to the focuser, you create a rigid, metal-on-metal foundation that holds your camera perfectly square to the optical axis, night after night.\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 M54 Standard for Modern Astro-Cameras\u003c\/h3\u003e\n\u003cp\u003eOn the camera side, the adapter provides a male M54x0.75 thread, a common standard for today's astronomy cameras, filter wheels, and off-axis guiders. This allows you to directly and securely attach your imaging equipment without intermediate adapters that could introduce tilt. This robust connection is critical for heavy imaging packages and ensures consistent, repeatable results when assembling your gear.\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\u003eEngineered for Maximum Contrast and Durability\u003c\/h3\u003e\n\u003cp\u003eMachined from a single piece of high-grade aluminum and finished with a deep black anodizing, the M54 adapter is built for durability and stray light control. Internally, the adapter features anti-reflection threads and a matte finish. This seemingly small detail is vital for maintaining the high contrast of your Tele Vue optics by absorbing off-axis light that could otherwise reduce the clarity of faint details in your images.\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 the Perfect Imaging Train\u003c\/h3\u003e\n\u003cp\u003eFor the astrophotographer, this adapter is more than just a connector; it is a problem solver. It is the right choice when you need to build a stable, flex-free imaging train that can support a heavy camera and filter wheel without compromise. While it is a specialized component, its limitation is its strength. It does one job perfectly: providing a flawless connection between two specific, high-performance standards, ensuring your focus and framing remain exactly where you set them.\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\"\u003eWill this adapter work with my ZWO or QHY camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, if your camera, filter wheel, or off-axis guider has a female M54x0.75 thread for its primary connection. Many modern cameras from ZWO, QHY, and other brands use this standard, especially models with larger sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter all I need to connect my camera to my NP127is?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter provides the physical connection, but you must also ensure you reach the correct back focus distance for your specific telescope model. You may need additional M54 extension tubes to achieve the required spacing for a flat field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this threaded adapter better than a 2\" nosepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA threaded connection is mechanically superior to a slip-fit 2\" nosepiece held by thumbscrews. It eliminates any possibility of tilt or flexure, which is critical for maintaining sharp stars across a large imaging sensor, especially with heavy equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Tele Vue telescopes is this M54 adapter designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed for Tele Vue telescopes that use the 2.4\" Imaging System focuser, such as the NP101is and NP127is refractors. It threads directly onto the end of the focuser drawtube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter cause vignetting with my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the large 2.4\" diameter of the Tele Vue focuser side and the M54 connection are designed to provide a fully illuminated field for sensors up to full-frame (35mm) format, ensuring no light is clipped by the adapter itself.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eM54-1073\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Thread\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Imaging System Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Thread\u003c\/td\u003e\n\u003ctd\u003eMale M54 x 0.75 Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e0.26\" (6.6 mm) when connected to other Imaging System accessories\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\"\u003eTele Vue M54 Camera Adapter for 2.4\"\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884169501,"sku":"TV-M54-1073","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_M54_Camera_Adapter_1.jpg?v=1777515025"},{"product_id":"tele-vue-2-4-inch-accessory-tube-0-25-inch-6-4mm","title":"Tele Vue 2.4\" Accessory Tube - 0.25\" (6.4mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eComponent Type: Fixed Extension Tube\u003c\/li\u003e\n\u003cli\u003eSystem Format: Tele Vue 2.4\" Imaging System\u003c\/li\u003e\n\u003cli\u003eOptical Length: 0.25\" (6.4mm)\u003c\/li\u003e\n\u003cli\u003eConnection Side 1: M61x1 Male Thread\u003c\/li\u003e\n\u003cli\u003eConnection Side 2: M61x1 Female Thread\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\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\u003eDial In Perfect Back Focus with the Tele Vue 2.4\" Accessory Tube\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2.4\" Accessory Tube TLA-0250 is a precision-machined 6.4mm (0.25\") spacer for the Tele Vue imaging system, designed to help astrophotographers achieve the exact back focus required by their specific camera and reducer or flattener combination. This component is not merely an extension; it is a critical part of maintaining the geometric precision of your optical train, ensuring every connection is rigid, square, and internally dark. For imagers using Tele Vue's large-format refractors like the NP127is and NP101is, these tubes are the fundamental building blocks for creating a flat field with sharp stars from corner to corner.\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 Foundation of a Rigid Imaging Train: The 2.4\" Format\u003c\/h3\u003e\n\u003cp\u003eModern astrophotography demands an optical train that is completely free of flexure and tilt, especially when using large, heavy cameras. The Tele Vue 2.4\" accessory ecosystem was engineered specifically to meet this demand. This 0.25\" extension tube shares that same large-diameter format, preventing the vignetting and mechanical instability that can occur when adapting down to smaller 2\" components. The result is a solid, wide-aperture light path from the focuser to the camera sensor, preserving the full performance of your Tele Vue refractor.\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 Precise Back Focus with a 6.4mm Extension\u003c\/h3\u003e\n\u003cp\u003eEvery reducer, flattener, and corrector has an optimal distance at which it must be placed from the camera sensor to produce a perfectly flat field. The TLA-0250 provides a fixed, repeatable 6.4mm of spacing, allowing you to methodically build out your optical train to match that requirement. Using fixed tubes like this one eliminates the potential for drift or error associated with variable-length adapters, providing a set-and-forget solution for your dedicated imaging setup. It's the right choice when you know the exact spacing you need and demand absolute consistency night after night.\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 and Square M61 Threaded Connections\u003c\/h3\u003e\n\u003cp\u003eThe integrity of your imaging train depends on its connections. The TLA-0250 uses Tele Vue's M61x1 threading on both male and female ends, ensuring a direct, metal-to-metal contact that is far more secure than compression rings or set screws. This threaded design locks the components together, maintaining perfect optical alignment and preventing any possibility of tilt as the telescope moves across the sky. This rigidity is what translates the theoretical performance of your optics into a reality on your sensor, producing consistently round stars across the entire frame.\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\u003eMaximizing Contrast with Anti-Reflection Interior\u003c\/h3\u003e\n\u003cp\u003eIn a high-performance imaging system, controlling stray light is paramount for achieving high-contrast results. Every internal surface of the TLA-0250 accessory tube is machined with micro-baffles and finished in a deep, matte black to absorb off-axis reflections. This attention to detail ensures that the only light reaching your sensor is the focused image from your telescope, not scattered light bouncing within the adapter. This maximizes the signal-to-noise ratio, allowing the faintest wisps of nebulosity and delicate galaxy details to stand out against a dark sky background.\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\u003eBuilding Your Perfect Imaging Train with Tele Vue Spacers\u003c\/h3\u003e\n\u003cp\u003eThis 6.4mm tube is one of several fixed-length spacers in the Tele Vue 2.4\" family. Astrophotographers often combine multiple tubes to precisely hit their target back focus. For example, if your setup requires 15.9mm of spacing, you could combine this 6.4mm tube (TLA-0250) with the 9.5mm tube (TLB-0375). This modular approach provides a robust and reliable alternative to single, often less-rigid, adjustable spacers. The primary limitation of this component is its specificity; it is designed exclusively for the Tele Vue 2.4\" ecosystem and is not compatible with standard 2\" focusers or 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\u003eThe Final Millimeters to a Perfect Image\u003c\/h3\u003e\n\u003cp\u003eThe experience of using a precision spacer isn't about the component itself, but the image it makes possible. Imagine processing your data and finding that the stars in the corners of your full-frame sensor are just as tight and round as the ones in the center. That is the direct visual consequence of achieving correct back focus. This 6.4mm accessory tube is often the final, critical piece of the puzzle that turns a good image with slight star elongation at the edges into a flawless, professional-quality astrophoto ready for publication.\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 this Tele Vue accessory tube used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a precision 6.4mm (0.25\") spacer used to set the correct back focus distance between a field flattener or reducer and a camera sensor. It is designed specifically for Tele Vue's 2.4\" imaging systems, such as those on the NP101is and NP127is telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Tele Vue tube work with my standard 2-inch focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This accessory tube is part of the larger Tele Vue 2.4\" ecosystem and uses M61x1 threads. It is not compatible with standard 2\" focusers that use compression rings or M48 threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know which spacer length I need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eConsult the documentation for your specific field flattener or reducer, which will state the required back focus in millimeters (typically 55mm). You then subtract your camera's sensor depth and any other adapters to find the remaining distance you need to fill with spacers like this one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack multiple Tele Vue 2.4\" tubes together?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, these tubes are designed to be stacked. Combining different lengths (e.g., this 6.4mm tube with a 9.5mm or 12.7mm tube) is the standard method for achieving a precise, custom back focus distance with maximum rigidity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a fixed spacer better than an adjustable one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a dedicated imaging setup, a stack of fixed spacers like this one is generally considered more rigid and less prone to tilt than a helical or sliding adjustable spacer. If your back focus requirement is constant, fixed tubes provide superior mechanical stability.\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\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Accessory Tube - 0.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eTLA-0250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length \/ Spacing\u003c\/td\u003e\n\u003ctd\u003e0.25\" (6.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Interface\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Imaging System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Type (Both Sides)\u003c\/td\u003e\n\u003ctd\u003eM61 x 1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e~2.6\" (66mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e~2.3\" (58mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.2 oz (34g)\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\"\u003eTele Vue 2.4\" Accessory Tube - 0.25\" (6.4mm)\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\/Tele_Vue_Tubes_and_Spacers_Set_2.4-inch_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\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884235037,"sku":"TV-TLA-0250","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2.4in_Accessory_Tube_0.25in_1.jpg?v=1777515016"},{"product_id":"tele-vue-2-4-inch-accessory-tube-0-375-inch-9-5mm","title":"Tele Vue 2.4\" Accessory Tube - 0.375\" (9.5mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtension Length: 9.5mm (0.375\")\u003c\/li\u003e\n\u003cli\u003eFormat: Tele Vue 2.4\" Accessory Standard\u003c\/li\u003e\n\u003cli\u003eConnection Side 1: 2.4\" Female Thread\u003c\/li\u003e\n\u003cli\u003eConnection Side 2: 2.4\" Male Thread\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\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\u003eAchieve Perfect Back Focus with the Tele Vue 2.4\" Accessory Tube\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2.4\" Accessory Tube - 0.375\" (9.5mm) is a precision-machined spacer designed to solve critical back focus spacing for imagers using Tele Vue NPis telescopes and accessories. It provides exactly 9.5mm of rigid extension, allowing you to accurately place your camera sensor at the optimal focal plane when working with reducers, flatteners, or specific camera adapters. This is not just a tube; it is a calibrated tool for achieving the sharpest possible stars across your large-format imaging sensor.\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\u003eEngineered for a Secure Optical Train\u003c\/h3\u003e\n\u003cp\u003eThis extension tube is built to integrate flawlessly into the Tele Vue 2.4\" accessory ecosystem. Both the male and female threads are machined to tight tolerances, ensuring a square, no-tilt connection that preserves the optical alignment of your imaging train. The interior is blackened to absorb stray light, protecting the high contrast delivered by your Tele Vue refractor.\u003c\/p\u003e\n\u003cp\u003eFor imagers, this rigid, threaded connection is a significant upgrade over thumbscrew-based adapters. It eliminates the potential for sensor tilt and flexure, which can ruin long exposures with elongated stars in the corners of the frame. By using the TLB-0375, you maintain a robust, repeatable connection from the focuser to your camera, night after night.\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 Tele Vue 9.5mm extension tube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary function is to add a precise 9.5mm (0.375 inches) of spacing in an imaging train to achieve the exact back focus required by a field flattener or focal reducer, most commonly with Tele Vue NP101is and NP127is telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this accessory work with standard 2\" focusers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this tube uses Tele Vue's proprietary large-format 2.4\" threading. It is designed specifically for Tele Vue focusers and accessories that share this larger, more rigid connection standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack multiple 2.4\" accessory tubes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, these tubes are designed to be threaded together to create custom spacing lengths. For example, combining this 9.5mm tube with a 6.4mm (0.25\") tube would provide 15.9mm of total extension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know which extension tube length I need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe required length depends on your specific camera, flattener\/reducer, and any other accessories in your imaging train. You must consult the back focus requirements specified in your Tele Vue telescope or flattener manual to calculate the total spacing needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this better than using a variable extension tube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a fixed imaging setup, this solid tube provides a more rigid and stable connection than most variable extenders. This rigidity helps prevent sensor tilt, which is crucial for achieving sharp stars across the entire field with large sensors.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eTLB-0375\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtension Length\u003c\/td\u003e\n\u003ctd\u003e9.5mm (0.375\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e2.4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003eMale and Female 2.4\" Tele Vue Accessory Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\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\"\u003eTele Vue 2.4\" Accessory Tube - 0.375\" (9.5mm)\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884300573,"sku":"TV-TLB-0375","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2.4in_Accessory_Tube_0.375in_1.jpg?v=1777515016"},{"product_id":"tele-vue-2-4-inch-accessory-tube-0-50-inch-12-7mm","title":"Tele Vue 2.4\" Accessory Tube - 0.50\" (12.7mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtension Length: 0.50\" (12.7mm)\u003c\/li\u003e\n\u003cli\u003eConnection Standard: Tele Vue 2.4\" Imaging System Thread\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eClear Aperture: \u0026gt;2.3\"\u003c\/li\u003e\n\u003cli\u003eCompatibility: Tele Vue NP101is and NP127is Telescopes\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\u003eAchieve Perfect Back Focus with the Tele Vue 2.4\" Accessory Tube\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2.4\" Accessory Tube - 0.50\" (12.7mm) is a precision-machined imaging spacer designed to solve one of astrophotography's most critical challenges: achieving exact back focus. This component is not merely an extension; it is a calibrated tool for building a rigid, perfectly aligned imaging train with your Tele Vue NPis refractor, ensuring your camera sensor sits precisely where the corrected focal plane exists.\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 Foundation of a Rock-Solid Imaging Train\u003c\/h3\u003e\n\u003cp\u003eAt the heart of Tele Vue's imaging system is the proprietary 2.4-inch thread specification. This large-diameter connection provides a significant advantage over standard 2-inch nosepieces or M48 threads by eliminating the potential for tilt and flexure. When you thread the TLC-0500 into your imaging train, you are creating a solid metal-on-metal connection that preserves the perfect optical alignment delivered by your NPis telescope's optics.\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\u003ePrecision Spacing for Critical Back Focus\u003c\/h3\u003e\n\u003cp\u003eModern field flatteners, reducers, and camera sensors have stringent back focus requirements, often specified to within a fraction of a millimeter. The TLC-0500 provides a fixed, repeatable 12.7mm of spacing, allowing you to methodically build out your imaging train to meet that target. By combining different tubes from the 2.4\" accessory family, you can dial in your camera's distance with high confidence, a crucial step for achieving sharp, aberration-free stars across the entire frame.\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\u003eEngineered for Performance and Durability\u003c\/h3\u003e\n\u003cp\u003eEach Tele Vue accessory tube is machined from solid aluminum and finished with a durable black anodizing. This process not only protects the component from wear but also provides a non-reflective internal surface to maximize contrast by absorbing stray light. The precision-cut threads ensure smooth, secure engagement, so you can assemble and disassemble your imaging setup in the dark without fumbling or cross-threading.\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\u003eLimitations and System Context\u003c\/h3\u003e\n\u003cp\u003eIt is important to understand that this accessory tube is designed exclusively for the Tele Vue 2.4\" imaging system ecosystem, primarily for the NP101is and NP127is telescopes. It is not compatible with standard 2-inch focusers or SCT threads. While it provides a fixed extension, it is part of a modular system; achieving your target back focus will likely require combining this tube with other Tele Vue 2.4\" spacers of different lengths.\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 this Tele Vue extension tube used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis tube adds exactly 0.50 inches (12.7mm) of spacing to your imaging train. It is used with Tele Vue NPis telescopes to achieve the precise back focus distance required by your specific camera and reducer or flattener combination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this fit a standard 2-inch focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This tube uses Tele Vue's proprietary 2.4-inch diameter thread. It is specifically designed for the focusers and imaging system accessories of the Tele Vue NP101is and NP127is telescopes and will not thread into standard 2-inch or M48 accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know which length accessory tube I need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must calculate your required back focus by starting with the specification of your flattener or reducer, then subtracting the back focus of your camera and any other accessories like filter wheels. The remaining distance is what you need to fill with a combination of these accessory tubes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this a single component or a set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a single accessory tube, model TLC-0500, that provides 0.50\" of extension. Tele Vue offers a range of other lengths, sold separately, to allow for modular and precise spacing adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use this instead of a generic M48 spacer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Tele Vue 2.4\" system provides a larger, more rigid, and fully illuminated connection that prevents both vignetting and tilt. Using this accessory tube maintains the integrity of the Tele Vue imaging train for optimal performance with their telescopes.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eTLC-0500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtension Length\u003c\/td\u003e\n\u003ctd\u003e0.50\" (12.7mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Female to Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTele Vue NP101is, NP127is, and other 2.4\" Imaging System accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.9 oz (54 g)\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\"\u003e2.4\" Accessory Tube - 0.50\" (12.7mm)\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884333341,"sku":"TV-TLC-0500","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2.4in_Accessory_Tube_0.50in_1.jpg?v=1777515016"},{"product_id":"tele-vue-2-4-inch-accessory-tube-1-0-25-4mm","title":"Tele Vue 2.4\" Accessory Tube - 1.0 (25.4mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtension Length: 1.0\" (25.4mm)\u003c\/li\u003e\n\u003cli\u003eFormat: Tele Vue 2.4\" Imaging System\u003c\/li\u003e\n\u003cli\u003eConnection Side 1: 2.4\" Male Thread\u003c\/li\u003e\n\u003cli\u003eConnection Side 2: 2.4\" Female Thread\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\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\u003eLock in Perfect Spacing for Your Tele Vue Imaging System\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTele Vue 2.4\" Accessory Tube - 1.0 (25.4mm)\u003c\/strong\u003e is a precision-machined imaging accessory tube designed to establish exact back focus distances in Tele Vue's large-aperture refractor systems. This component is not a generic spacer; it is an integral part of the optical train, engineered to eliminate flexure and maintain perfect sensor alignment for imagers using NP101is and NP127is telescopes.\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\u003eRigid Construction for a Solid Imaging Train\u003c\/h3\u003e\n\u003cp\u003eWhen assembling an imaging train with a heavy camera and filter wheel, the weakest link determines the quality of your results. This accessory tube is machined from solid aluminum with a black anodized finish to provide a rigid, non-flexing extension. This structural integrity ensures your sensor remains perfectly perpendicular to the optical axis, preventing star distortion and image shift as the telescope moves across the sky.\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 Threaded Connections for Optical Alignment\u003c\/h3\u003e\n\u003cp\u003eUnlike simple slip-fit or compression ring adapters, the Tele Vue accessory tube uses robust threads on both ends to create a solid, metal-to-metal connection. This threaded design is critical for maintaining the precise centering required by field flatteners and reducers. The result is an optical train that behaves as a single unit, free from the sensor tilt that can ruin an otherwise perfect exposure.\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 Critical Back Focus with Tele Vue Refractors\u003c\/h3\u003e\n\u003cp\u003eAstrophotography requires placing the camera sensor at a specific distance from the final optical element, a measurement known as back focus. The 1.0-inch (25.4mm) length of this tube is a key value for building out the correct spacing for many common camera setups when used with Tele Vue's reducers and flatteners. By combining this tube with other spacers in the 2.4\" system, you can precisely hit the required distance for a flat field of sharp stars from edge to edge.\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\u003eSystem-Specific Design and Its Trade-Offs\u003c\/h3\u003e\n\u003cp\u003eIt is important to understand that this is a specialized component designed exclusively for the Tele Vue 2.4\" imaging system. Its large diameter and proprietary threads will not connect to standard 2-inch accessories, M48, or M42 T-threads without appropriate adapters. This specificity is its strength, ensuring zero-flexure performance within the Tele Vue ecosystem, but it is a trade-off against universal compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need the 1.0\" extension tube for my NP127is?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need this tube if the total back focus distance required by your reducer or flattener, minus the back focus of your camera and other accessories, leaves a gap of approximately 25.4mm. Always consult the Tele Vue back focus charts for your specific optical configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Tele Vue tube connect to a standard M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, not directly. This tube uses Tele Vue's proprietary 2.4\" threading. To connect to M48 threads, you would need an adapter like the Tele Vue RAD-1074 nosepiece followed by a standard T-ring adapter like the TRG-1072.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack multiple Tele Vue 2.4\" accessory tubes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, these tubes are designed to be stacked. Their rigid, threaded construction ensures that combining multiple tubes maintains alignment and strength without introducing flexure into the imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between this and a standard 2\" extension tube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis 2.4\" tube has a larger diameter to prevent vignetting with large camera sensors and uses secure threads instead of a slip-fit barrel. A standard 2\" extension tube introduces potential for slop and tilt, which this accessory is specifically designed to eliminate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this tube internally baffled or blackened?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the interior of the tube features a matte black, anti-reflective finish to absorb stray light. This improves image contrast by preventing internal reflections from reaching the camera sensor.\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\u003eProduct Number\u003c\/td\u003e\n\u003ctd\u003eTV-TLD-1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Format\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Imaging System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e1.0\" (25.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection 1\u003c\/td\u003e\n\u003ctd\u003e2.4\" Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection 2\u003c\/td\u003e\n\u003ctd\u003e2.4\" Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterior\u003c\/td\u003e\n\u003ctd\u003eAnti-reflective matte black\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\"\u003eTele Vue 2.4\" Accessory Tube - 1.0\" (25.4mm)\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884792093,"sku":"TV-TLD-1000","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2.4in_Accessory_Tube_1.0in_1.jpg?v=1777515016"},{"product_id":"tele-vue-2-4-inch-accessory-tube-0-040-inch-1mm","title":"Tele Vue 2.4\" Accessory Tube - 0.040\" (1mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtension Provided: 1mm (0.040\")\u003c\/li\u003e\n\u003cli\u003eAccessory Standard: Tele Vue 2.4\" Imaging System\u003c\/li\u003e\n\u003cli\u003eConnection Type: Threaded\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 2.7\"\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\u003eAchieve Perfect Spacing in Your Tele Vue Imaging System\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2.4\" Accessory Tube (TLF-0040) is a precision 1mm spacer designed to solve the critical challenge of achieving exact back focus in high-performance imaging trains. For astrophotographers using Tele Vue NP-series refractors with reducers or flatteners, this component provides the small, calibrated adjustment needed to produce perfectly sharp stars across the entire sensor.\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 Critical Millimeter for a Flat Field\u003c\/h3\u003e\n\u003cp\u003eModern field flatteners and focal reducers have exacting back focus requirements, where even a single millimeter of error can result in elongated stars at the edge of your frame. The TLF-0040 accessory tube provides a precise 1mm (0.040\") of optical path length, allowing you to methodically fine-tune the distance between your corrector and sensor. This small, rigid extension is often the key to transitioning from a good image to a great one, ensuring your optical system performs to its theoretical limit.\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\u003eSystem Integrity and Flexure-Free Connection\u003c\/h3\u003e\n\u003cp\u003eThis accessory tube is built as an integral part of the Tele Vue 2.4\" imaging system, connecting via secure threads rather than compression rings or slip-fit adapters. This threaded connection is essential for maintaining perfect optical alignment and eliminating the possibility of tilt or flexure, which can ruin long exposures. The black anodized aluminum construction matches the fit and finish of your Tele Vue focuser and other accessories, ensuring a seamless and rigid imaging train from the focuser to the camera.\u003c\/p\u003e\n\u003cp\u003eThe primary limitation of this accessory is its specificity. It is not a general-purpose extension tube; it is engineered exclusively for the Tele Vue 2.4\" accessory ecosystem. Its value is realized when used with Tele Vue's large format correctors and adapters to achieve a prescribed optical distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need a 1mm spacer for my Tele Vue setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf your images show sharp stars in the center but elongated or bloated stars in the corners, your back focus spacing is likely incorrect. A 1mm spacer is used for fine-tuning this distance. Consult your reducer or flattener's documentation for the precise back focus requirement and measure your current imaging train to see if an adjustment is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack multiple Tele Vue 2.4\" accessory tubes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, these tubes are designed to be stacked. You can thread multiple tubes together to achieve a specific custom spacing, such as combining a 1mm (TLF-0040) and 2mm (TLG-0080) tube for 3mm of extension, all while maintaining a rigid, flex-free connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this spacer cause vignetting with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the Tele Vue 2.4\" imaging system is designed to provide a fully illuminated field for sensors up to 52mm diagonal. This 1mm spacer maintains that clear aperture, ensuring no additional vignetting when used as part of the complete Tele Vue imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this compatible with standard 2\" accessories?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is not a 2\" accessory. It is part of Tele Vue's larger 2.4\" format, designed for their NP-series refractors like the NP101is and NP127is. It uses proprietary threads and will not connect to standard 2\" focusers or diagonals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this and a generic M48 extension?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis tube has a much larger 2.4-inch clear aperture to prevent vignetting with large sensors and fast optics. More importantly, its proprietary threading ensures a perfect, tilt-free fit with Tele Vue's own focusers and adapters, which is a level of mechanical precision not guaranteed by generic parts.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eTLF-0040\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtension Length\u003c\/td\u003e\n\u003ctd\u003e1mm (0.040\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Series\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Imaging System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003eThreaded Male\/Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e~2.7\" (68.6mm)\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\"\u003eTele Vue 2.4\" Accessory Tube - 0.040\" (1mm)\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884824861,"sku":"TV-TLF-0040","price":32.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2.4in_Accessory_Tube_1mm_1.jpg?v=1777515017"},{"product_id":"tele-vue-2-4-inch-accessory-tube-0-080-inch-2mm","title":"Tele Vue 2.4\" Accessory Tube - 0.080\" (2mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtension Length: 2mm (0.080\")\u003c\/li\u003e\n\u003cli\u003eConnection Type: Tele Vue 2.4\" Proprietary Thread\u003c\/li\u003e\n\u003cli\u003eFormat: Accessory Tube\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eCompatibility: Tele Vue Imaging System (is) Telescopes\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\u003eFine-Tune Your Imaging Train with the Tele Vue 2.4\" Spacer Tube\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2.4\" Accessory Tube - 0.080\" (2mm) is a specialized spacer designed to give astrophotographers precise control over the back focus of their Tele Vue Imaging System. This component is not a generic extender; it is a precision-machined part engineered to integrate perfectly with the large-format focusers and accessories of NP101is and NP127is telescopes, ensuring optimal field flatness with large camera sensors.\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\u003eAchieve Perfect Spacing for Flat Fields\u003c\/h3\u003e\n\u003cp\u003eModern field flatteners and reducers require exacting back focus distances to deliver sharp stars from corner to corner. This 2mm accessory tube allows you to make fine, calibrated adjustments to your imaging train, dialing in the exact spacing your specific camera and filter combination requires. Adding this tube provides a small but critical increase in optical path length, helping you achieve the precise distance needed for a perfectly corrected image field.\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\u003eRigid, Secure 2.4\" Threaded Connection\u003c\/h3\u003e\n\u003cp\u003eUnlike generic slip-fit or compression ring adapters, this accessory tube uses Tele Vue's proprietary 2.4-inch threading. This robust connection creates a solid, flex-free extension of the optical train, which is critical when supporting heavy cameras and filter wheels. The threaded design completely eliminates the possibility of tilt, ensuring your camera sensor remains perfectly orthogonal to the light path for consistent, professional results.\u003c\/p\u003e\n\u003cp\u003eWhile essential for achieving specific back focus measurements, the use of multiple small extenders can be less rigid than a single, longer extender. For larger spacing needs, consider one of Tele Vue's longer 2.4\" accessory tubes to minimize the number of threaded connections in your imaging train.\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 this 2mm Tele Vue tube used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is used to make very small, precise adjustments to the back focus distance in a Tele Vue Imaging System (is) telescope setup. This is often necessary to achieve perfect star sharpness across the entire field with a specific camera, reducer, or flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this fit a standard 2-inch focuser or diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This tube uses Tele Vue's proprietary 2.4-inch threading and is only compatible with Tele Vue (is) telescope focusers and their specific line of 2.4\" imaging accessories. It will not thread into or fit standard 2\" or M48 accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need the 2mm spacer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou typically need a spacer like this when you have calculated your required back focus and find you are just short. It is for fine-tuning, often after you have assembled your main components and find your corner stars are not perfectly sharp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs it better to use this 2mm tube or multiple 1mm tubes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is always better to use a single tube to achieve the desired spacing whenever possible. Using one 2mm tube creates a more rigid connection with fewer potential points of tilt or flex than using two separate 1mm tubes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this part of a set of Tele Vue spacers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, Tele Vue offers a full set of 2.4\" accessory tubes (model TLS-2245) with different lengths. This 2mm (0.080\") tube, model TLG-0080, is available individually for photographers who have identified a very specific spacing need.\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eTLG-0080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtension Provided\u003c\/td\u003e\n\u003ctd\u003e2mm (0.080\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.8 oz (23 g)\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\"\u003eTele Vue 2.4\" Accessory Tube - 0.080\" (2mm)\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884857629,"sku":"TV-TLG-0080","price":32.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2.4in_Accessory_Tube_2mm_1.jpg?v=1777515017"},{"product_id":"tele-vue-set-of-2-tlf-tlg-2-4-inch-accessory-tubes","title":"Tele Vue Set of 2x (TLF+ TLG) 2.4\" Accessory Tubes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eExtension Provided: 1mm (TLF-0040)\u003c\/li\u003e\n\u003cli\u003eExtension Provided: 2mm (TLG-0080)\u003c\/li\u003e\n\u003cli\u003eSystem Compatibility: Tele Vue 2.4\" Imaging System\u003c\/li\u003e\n\u003cli\u003eConnection Type: 2.4\" Thread (Female\/Male)\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\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\u003eDial In Perfect Back Focus with Tele Vue Accessory Tubes\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Set of 2 (TLF+TLG) 2.4\" Accessory Tubes provides the ultra-fine spacing adjustments required to achieve critical back focus for astrophotography. This set, containing 1mm and 2mm threaded spacers, is an essential tool for imagers using Tele Vue NP-series telescopes to eliminate field curvature and achieve perfectly sharp stars from corner to corner.\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 Final Millimeters of Imaging Precision\u003c\/h3\u003e\n\u003cp\u003eModern field flatteners and reducers are designed with a very specific back focus distance, the spacing between the corrector lens and the camera sensor. Deviating from this distance by even a small amount can introduce star elongation and other aberrations, particularly at the edges of your image frame. This set allows you to bridge the final gap in your imaging train with precision.\u003c\/p\u003e\n\u003cp\u003eWhen your standard adapters and spacers get you close but not exactly to the prescribed 55mm or other target distance, these tubes are the solution. The 1mm and 2mm increments, used individually or together, provide the granular control needed to methodically test and lock in the optimal spacing for your specific camera and filter wheel combination.\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 TLF-0040 (1mm) Fine-Tuning Spacer\u003c\/h3\u003e\n\u003cp\u003eThe 1mm tube is your tool for the most delicate adjustments. When you have analyzed an image and see only slight stellar elongation in the corners, this spacer is often the exact amount of correction needed. Its minimal length allows you to incrementally walk the sensor plane into the perfect focal point without overshooting the mark.\u003c\/p\u003e\n\u003cp\u003eThis is particularly valuable when you introduce new components like a filter slide or off-axis guider that slightly alter your optical path length. The TLF-0040 provides a calibrated, repeatable way to compensate for these changes, saving you the frustration of trial-and-error with less precise shims or variable spacers.\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 TLG-0080 (2mm) Coarse Adjustment Spacer\u003c\/h3\u003e\n\u003cp\u003eThe 2mm tube serves as a foundational building block in your spacing toolkit. It is the perfect first step when you know your current setup is short by a few millimeters. Combining it with the 1mm tube gives you a 3mm option, expanding your adjustment range without needing to buy a separate spacer.\u003c\/p\u003e\n\u003cp\u003eFor imagers using DSLRs or mirrorless cameras with T-rings of non-standard thicknesses, the TLG-0080 is often the key to getting into the correct back focus zone. It provides a solid, measured starting point for further fine-tuning, ensuring your entire imaging train remains rigid and aligned.\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\u003eRigid, Zero-Flexure 2.4\" Threaded Connections\u003c\/h3\u003e\n\u003cp\u003eUnlike slip-fit or compression ring connections, the Tele Vue 2.4\" threaded interface on these tubes guarantees perfect coaxial alignment. Once screwed into your NP101is, NP127is, or other Imaging System components, they become a rigid extension of the optical tube. This eliminates any possibility of tilt, which is a primary cause of misshapen stars in one corner of an image.\u003c\/p\u003e\n\u003cp\u003eThe security of a threaded connection means you can assemble your entire camera train, from reducer to filter wheel to camera, without worrying about sag or misalignment as the telescope tracks across the sky. This mechanical stability is the bedrock of a successful imaging session, ensuring that your optical corrections perform exactly as designed.\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\u003eContrast-Preserving Internal Blackening\u003c\/h3\u003e\n\u003cp\u003eThe interior of each accessory tube is treated with a matte black, anti-reflective finish. This surface is designed to trap any stray light that might enter the optical path from off-axis sources. By preventing this light from reflecting off internal surfaces and reaching the sensor, the tubes help preserve the deep, dark backgrounds and high contrast of your final images.\u003c\/p\u003e\n\u003cp\u003eThis is not merely a cosmetic feature. In long-exposure astrophotography, even faint internal reflections can build up over time, reducing the signal-to-noise ratio and washing out faint nebulosity. The meticulous internal finishing of these tubes is a small but critical detail that contributes to a cleaner, more professional final result.\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 problem do these Tele Vue accessory tubes solve?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThey provide precise, small spacing adjustments (1mm and 2mm) needed to achieve the exact back focus distance required by your field flattener or reducer. This is critical for correcting star shape at the edge of your images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre these tubes compatible with 2-inch accessories?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, these are specifically for the Tele Vue Imaging System, which uses a larger 2.4-inch diameter threaded connection. They will not thread into standard 2-inch focusers, diagonals, or filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack the 1mm and 2mm tubes together?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The tubes are designed to be threaded together, allowing you to create a rigid 3mm spacer if needed. This gives you three spacing options (1mm, 2mm, 3mm) from just two components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use these instead of a variable spacer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFixed, threaded tubes like these offer superior rigidity and guaranteed alignment. Variable spacers can sometimes introduce a small amount of tilt into the imaging train, which can be difficult to diagnose. These tubes eliminate that possibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Tele Vue telescopes use the 2.4\" accessory tubes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese are primarily used with Tele Vue's \"is\" series refractors, such as the NP101is and NP127is, which feature the large 2.4-inch Imaging System focuser for wide-field astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eTLS-1121 (Set), TLF-0040 (1mm), TLG-0080 (2mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Type\u003c\/td\u003e\n\u003ctd\u003eThreaded Extension Tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtension Length\u003c\/td\u003e\n\u003ctd\u003e1mm (0.040\") and 2mm (0.080\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Diameter\u003c\/td\u003e\n\u003ctd\u003e2.4 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Pitch\u003c\/td\u003e\n\u003ctd\u003eProprietary Tele Vue Imaging System Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTele Vue NP101is, NP127is, and other 2.4\" Imaging System components\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\"\u003e1mm (0.040\") Accessory Tube (TLF-0040)\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\"\u003e2mm (0.080\") Accessory Tube (TLG-0080)\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884890397,"sku":"TV-TLS-1121","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Set_of_2_2.4in_Accessory_Tubes_1.jpg?v=1777515029"},{"product_id":"tele-vue-set-of-6-2-4-inch-accessory-tubes","title":"Tele Vue Set of 6x 2.4\" Accessory Tubes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAchieve Precise Back Focus for Tele Vue Imaging Systems\u003c\/li\u003e\n\u003cli\u003eIncludes Four Threaded Extension Tubes (6.4mm, 9.5mm, 12.7mm, 25.4mm)\u003c\/li\u003e\n\u003cli\u003eIncludes Two Unthreaded Spacers for Fine-Tuning (1mm, 2mm)\u003c\/li\u003e\n\u003cli\u003eCompatible with 2.4\" Tele Vue Focusers (NP101is, NP127is)\u003c\/li\u003e\n\u003cli\u003eBlack Anodized Aluminum with Anti-Reflection Threads\u003c\/li\u003e\n\u003cli\u003eEnables Stacking for Custom Spacing Combinations\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\u003eManuals\/Downloads\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\u003ePrecision Spacing for Flawless Astrophotos\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Set of 6 2.4\" Accessory Tubes is an essential toolkit for astrophotographers using Tele Vue's large-format \"is\" refractors, providing the mechanical precision required to achieve perfect back focus. This comprehensive set allows you to rigidly and accurately set the distance between your reducer, flattener, or corrector and your camera sensor. Getting this distance right is not just a recommendation, it is a fundamental requirement for achieving sharp, coma-free stars across the entire photographic field.\u003c\/p\u003e\n\u003cp\u003eModern correctors and reducers are designed with a specific, optimal back-focus distance, often 55mm, but this can vary. This set gives you the modular components to bridge the gap between your camera's native back focus and the optical requirement of your imaging train. By combining threaded tubes for major adjustments and unthreaded shims for fine-tuning, you can build the exact spacing your system needs, down to the millimeter, eliminating a critical source of image degradation.\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\u003eFour Threaded Extension Tubes for Secure Connections\u003c\/h3\u003e\n\u003cp\u003eThe core of the set consists of four threaded extension tubes, providing 6.4mm (0.25\"), 9.5mm (0.375\"), 12.7mm (0.50\"), and 25.4mm (1.0\") of spacing. Each tube features the robust Tele Vue 2.4\" imaging system thread on both male and female ends. This ensures a secure, tilt-free connection that maintains the rigidity of your imaging train, which is critical when supporting heavy cameras and filter wheels.\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\u003eTwo Unthreaded Spacers for Millimeter-Level Accuracy\u003c\/h3\u003e\n\u003cp\u003eWhen your required spacing falls between the lengths of the threaded tubes, the two included unthreaded spacers provide the solution. The 1mm and 2mm shims are designed to be placed between any two threaded components, allowing you to dial in your back focus with high precision. This fine control is often the difference between good edge-of-field star shapes and perfect ones.\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\u003eDurable and Lightweight Aluminum Construction\u003c\/h3\u003e\n\u003cp\u003eEvery component in the set is machined from black anodized aluminum. This material provides an excellent balance of strength and low weight, ensuring your focuser is not overburdened. The anodized finish adds a layer of durability and corrosion resistance, protecting your investment for years of use in the field.\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\u003eAnti-Reflection Threads to Maximize Contrast\u003c\/h3\u003e\n\u003cp\u003eTo preserve the high contrast delivered by Tele Vue optics, the interior of the threaded extension tubes features micro-baffles. These anti-reflection threads are designed to trap any stray light that might enter the optical path. This small but critical detail prevents internal reflections from scattering light and reducing the contrast of your final image, ensuring deep black skies and faint details are not washed out.\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\u003eDesigned for the Tele Vue 2.4\" Imaging System\u003c\/h3\u003e\n\u003cp\u003eThis set is specifically engineered for the large-format focusers found on Tele Vue NP101is and NP127is refractors. These telescopes, designed for wide-field imaging with large sensors, have a 2.4\" diameter drawtube exit to minimize vignetting. This accessory tube set integrates perfectly, maintaining the full, unvignetted light path from the corrector to your camera sensor.\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\u003eModular Design for Ultimate Versatility\u003c\/h3\u003e\n\u003cp\u003eThe true power of this set is its modularity. The six different lengths can be stacked in various combinations to create dozens of unique spacing distances. Whether you are using a Tele Vue 0.8x reducer, a Large Field Corrector, or third-party accessories, this kit provides the flexibility to adapt to nearly any back-focus requirement you encounter, making it a permanent and indispensable part of your imaging toolkit.\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\u003eAn Essential Tool for Serious Imagers\u003c\/h3\u003e\n\u003cp\u003eWhile it may seem like a simple set of tubes, achieving correct back focus is a non-negotiable part of serious astrophotography. A small error in spacing can introduce significant aberrations, wasting precious imaging time. The Tele Vue Set of 6 Accessory Tubes is the professional solution, providing a reliable, repeatable, and precise method for optimizing your optical system for the best possible performance.\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 Tele Vue 2.4\" Accessory Tube Set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis set allows astrophotographers to precisely adjust the back-focus distance between their camera sensor and a field flattener or reducer. Achieving the correct spacing, often 55mm, is critical for obtaining sharp, coma-free stars across the entire image field with Tele Vue \"is\" refractors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill these tubes work with a standard 2\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, these tubes use Tele Vue's specific 2.4\" imaging system thread. They are designed for the larger focusers on NP101is, NP127is, and other \"is\" series telescopes to prevent vignetting with large camera sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the unthreaded 1mm and 2mm spacers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe unthreaded spacers are used for fine-tuning. You simply sandwich them between two of the threaded extension tubes or between an extension tube and your camera adapter. The pressure from tightening the threaded components holds the spacer securely in place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack multiple tubes together?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the tubes are designed to be stacked. You can combine multiple threaded tubes and spacers to build the exact length required by your specific camera and corrector combination, offering a high degree of modularity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy are anti-reflection threads important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe internal threads act as light baffles, trapping stray light that could otherwise cause internal reflections within the imaging train. This helps to maintain maximum image contrast, resulting in darker sky backgrounds and more visible faint detail in your astrophotos.\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\u003eTele Vue 2.4\" Imaging System Focusers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Imaging System Thread (2.56\"-24tpi nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreaded Tube Lengths\u003c\/td\u003e\n\u003ctd\u003e6.4mm (0.25\"), 9.5mm (0.375\"), 12.7mm (0.50\"), 25.4mm (1.0\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnthreaded Spacer Thicknesses\u003c\/td\u003e\n\u003ctd\u003e1mm (0.040\"), 2mm (0.080\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Components\u003c\/td\u003e\n\u003ctd\u003e6\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\"\u003e25.4mm (1.0\") Threaded Extension Tube (TLD-1000)\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\"\u003e12.7mm (0.50\") Threaded Extension Tube (TLC-0500)\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\"\u003e9.5mm (0.375\") Threaded Extension Tube (TLB-0375)\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\"\u003e6.4mm (0.25\") Threaded Extension Tube (TLA-0250)\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\"\u003e2mm (0.080\") Unthreaded Spacer (TLG-0080)\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\"\u003e1mm (0.040\") Unthreaded Spacer (TLF-0040)\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\/Tele_Vue_Tubes_and_Spacers_Set_2.4-inch_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\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223884988701,"sku":"TV-TLS-2245","price":218.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Set_of_6_2.4in_Accessory_Tubes_1.jpg?v=1777515030"},{"product_id":"tele-vue-48-mm-filter-adapter-for-2-4-inch","title":"Tele Vue 48mm Filter Adapter for 2.4\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnection (Telescope Side): Tele Vue 2.4\" Female Thread\u003c\/li\u003e\n\u003cli\u003eConnection (Filter Side): M48x0.75 Male Thread (Standard 2\" Filter Thread)\u003c\/li\u003e\n\u003cli\u003eApplication: Tele Vue Imaging System (NP101is, NP127is)\u003c\/li\u003e\n\u003cli\u003eOptical Length: 6.4mm\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Anodized Aluminum\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\u003eIntegrate 2\" Filters with Your Tele Vue Imaging System\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 48-mm Filter Adapter (AFT-1105) is a purpose-built component for astrophotographers using Tele Vue's large-format 2.4-inch imaging systems. This adapter allows you to securely place any standard 2-inch (M48) filter into your optical train, connecting directly to the focuser while consuming a minimal amount of precious back focus. It is the most direct and rigid solution for single-filter use with NP101is and NP127is refractors.\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 Secure, Large-Format 2.4\" Connection\u003c\/h3\u003e\n\u003cp\u003eUnlike standard 2-inch accessories that use slip-fit barrels and compression rings, the AFT-1105 threads directly onto the drawtube of Tele Vue's 2.4-inch focusers. This creates a solid, tilt-free connection that becomes part of the telescope itself. The benefit for an imager is the elimination of a potential source of flexure, ensuring your camera and filters remain perfectly orthogonal to the light path throughout an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUniversal M48 Filter Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe male threading on the adapter is a standard M48x0.75, which is the universal specification for 2-inch mounted astronomical filters. This ensures compatibility with your entire collection of filters, from broadband light pollution models to the narrowest of narrowband filters. You can easily switch between a Hydrogen-alpha filter for nebulae and a UV\/IR cut filter for broadband targets without changing your core setup.\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\u003eEngineered to Preserve Back Focus\u003c\/h3\u003e\n\u003cp\u003eEvery millimeter of back focus is critical in a modern imaging train. The AFT-1105 is designed with an ultra-low 6.4mm profile to add the least possible optical length to your system. Its function is to hold a filter, not act as a spacer. This lean design is a key advantage, as it leaves maximum room for other essential components like off-axis guiders, rotators, and camera-specific adapters.\u003c\/p\u003e\n\u003cp\u003eThe primary trade-off for this streamlined design is its singular purpose. This adapter is not a spacer and is intended for one filter at a time. For imagers who need to switch between multiple filters automatically, a filter wheel would be the more appropriate, albeit more back-focus-intensive, solution.\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\u003eDurable, Anti-Reflection Construction\u003c\/h3\u003e\n\u003cp\u003eMachined from a single piece of aluminum and finished with a matte black anodization, the adapter is both lightweight and durable. The internal surfaces are treated to prevent reflections from stray light. This attention to detail helps maintain the high-contrast performance of your Tele Vue refractor by ensuring that no stray light bounces off the adapter and into your camera sensor, which could reduce the faint details in your images.\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 Imager's Choice for Simplicity and Stability\u003c\/h3\u003e\n\u003cp\u003eThis adapter is the right choice for an imager with a Tele Vue 2.4\" system who primarily uses one filter per session, such as when capturing a single narrowband channel or shooting LRGB data over multiple nights. When you place your 7nm H-alpha filter in the AFT-1105 to capture the sprawling Cygnus Loop, you have confidence that the connection is rigid and the optical path is as short as possible. It delivers a simple, stable, and efficient way to integrate essential filters into a high-performance imaging setup.\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\"\u003eWill the AFT-1105 adapter fit a standard 2\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is designed exclusively for the Tele Vue 2.4-inch imaging system's large-format threaded focuser drawtube, found on NP101is and NP127is telescopes. It will not thread into or slide into a standard 2-inch focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much back focus does this adapter use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTele Vue designed the AFT-1105 to have a minimal 6.5mm optical length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter to connect my camera to the telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the AFT-1105 is solely a filter holder. You will still need the appropriate Tele Vue Imaging System adapters, such as the RAD-1074 nosepiece and various spacers, to properly connect your specific camera and achieve the correct back focus distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this a better choice than a filter wheel for my Tele Vue scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on your needs. The AFT-1105 is the better choice if you want the most rigid, lightweight, and back-focus-efficient method for using a single filter. A filter wheel is better if you need to switch between multiple filters automatically during an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack multiple 2\" filters with this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is not recommended. The adapter is designed to hold a single filter, and its male threads are not deep enough to securely hold a second filter stacked on top of the first. Stacking could also introduce optical issues and risk the filters falling.\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\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003eAFT-1105\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eTele Vue 2.4\" Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Side Connection\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 Male Thread (for 2\" Mounted Filters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e6.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTele Vue NP101is, NP127is, and other scopes with 2.4\" Imaging System focusers\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\"\u003eTele Vue 48-mm Filter Adapter for 2.4\" (AFT-1105)\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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223885021469,"sku":"TV-AFT-1105","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_48mm_Filter_Adapter_1.jpg?v=1777515018"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/televue-adapters.oembed","provider":"David Astro","version":"1.0","type":"link"}