{"product_id":"tele-vue-tunable-top-with-adapter","title":"Tele Vue Tunable Top with 1.25\" Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables precise coma correction for Tele Vue Paracorr Type 2\u003c\/li\u003e\n\u003cli\u003eContinuously adjustable with a lock screw\u003c\/li\u003e\n\u003cli\u003eEngraved millimeter scale for repeatable eyepiece settings\u003c\/li\u003e\n\u003cli\u003eNon-marring brass clamp ring secures 1.25\" accessories\u003c\/li\u003e\n\u003cli\u003eAccepts standard 1.25\" eyepiece filters\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\u003eUnlock Pinpoint Stars to the Edge with Your Paracorr\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTele Vue Tunable Top with adapter - 1.25\" (ATT-2125)\u003c\/strong\u003e is the essential control center for extracting maximum performance from your Paracorr Type 2 coma corrector and fast Newtonian telescope. This precision component replaces the standard eyepiece holder, giving you micro-adjustable control over the critical lens-to-focal-plane distance. Achieving this perfect spacing is the key to transforming comatic stars at the edge of the field into sharp, pinpoint dots, unlocking the full potential 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\u003eThe Heart of Coma Correction: The Micro-Adjustable Mechanism\u003c\/h3\u003e\n\u003cp\u003eA Paracorr's performance is entirely dependent on the precise distance between its lenses and your eyepiece's focal plane. The Tunable Top's helical mechanism allows you to dial in this distance with exacting precision. As you twist the upper section, it smoothly extends or retracts, changing the spacing without rotating the eyepiece, so your target remains perfectly framed.\u003c\/p\u003e\n\u003cp\u003eThis fine control is not a \"set and forget\" feature. Every eyepiece design has a unique focal plane position. This device empowers you to find the specific sweet spot for each eyepiece in your collection, ensuring that whether you are using a Plössl or a wide-field Nagler, you are achieving the highest level of coma correction the Paracorr can 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\u003eRepeatable Performance with the Engraved Reference Scale\u003c\/h3\u003e\n\u003cp\u003eFinding the perfect setting for an eyepiece is only half the battle. The Tunable Top features a clearly laser-engraved millimeter scale on its body, allowing you to note and record the optimal position for each of your 1.25\" eyepieces. This simple but critical feature eliminates guesswork during your observing sessions.\u003c\/p\u003e\n\u003cp\u003eOnce you chart your eyepieces, you can switch between them in the dark with confidence, quickly dialing the Tunable Top to the predetermined mark for each one. This workflow saves precious observing time and guarantees you are getting the same sharp, edge-corrected views every single time you insert that 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\u003eSecure and Safe Mounting with a Brass Clamp Ring\u003c\/h3\u003e\n\u003cp\u003eStandard set screws can mar the barrels of your expensive eyepieces, leaving unsightly and potentially damaging gouges. The Tele Vue Tunable Top incorporates a non-marring brass clamp ring. When you tighten the lock screw, this internal ring compresses gently and evenly around the eyepiece barrel.\u003c\/p\u003e\n\u003cp\u003eThis design provides a more secure, concentric grip than a single screw, preventing eyepiece tilt that can degrade optical performance. Most importantly, it protects your investment, ensuring the barrels of your eyepieces remain in pristine condition no matter how many times 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\u003eSeamless Integration with the Paracorr Type-2 Interface\u003c\/h3\u003e\n\u003cp\u003eThis Tunable Top is designed specifically for the Tele Vue Paracorr Type 2, ensuring a perfect, rigid fit. It threads directly onto the main optical body of the Paracorr, creating a solid, flex-free connection that becomes an integral part of the optical train. This robust mechanical link is critical for maintaining optical alignment, especially when using heavier eyepieces or cameras.\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\u003eAdd Contrast with Integrated 1.25\" Filter Threads\u003c\/h3\u003e\n\u003cp\u003eConveniently located at the base of the eyepiece barrel holder are standard M28.5x0.6 threads. This allows you to attach any 1.25\" filter, such as a nebula or light pollution filter, directly to the Tunable Top. Placing the filter here, before the eyepiece, ensures it is a permanent part of your Paracorr setup, simplifying your workflow when you switch 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\u003eA Necessary Upgrade, Not a Luxury Accessory\u003c\/h3\u003e\n\u003cp\u003eFor the owner of a fast f\/3 to f\/5 Newtonian reflector, coma is the single greatest barrier to achieving wide-field views with sharp stars edge-to-edge. While the Paracorr Type 2 provides the optical correction, the Tunable Top provides the essential mechanical control to make that correction perfect for your specific eyepieces.\u003c\/p\u003e\n\u003cp\u003eWithout it, you are using the Paracorr at a generic setting that is a compromise for most eyepieces. The only genuine trade-off is the initial time spent calibrating your eyepiece collection. Once done, this tool transforms your observing from a series of optical compromises to a repeatable, optimized experience every 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\"\u003eDo I really need the Tunable Top for my Paracorr Type 2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, if you want to get the best possible performance. Every eyepiece model has a different optimal spacing. The Tunable Top is the only way to precisely set this distance and achieve the sharpest stars at the edge of the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I find the right setting for my eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTele Vue provides a chart with recommended initial settings for their eyepieces. For others, you can start there and make fine adjustments while looking at a star in the outer 20% of the field of view until the star becomes a tight, round point.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this work with the original Paracorr (Type 1)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this model (ATT-2125) is designed specifically for the newer Paracorr Type 2. The original Paracorr has a different mechanical interface and requires a different tunable top model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this for imaging with a 1.25\" camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it works perfectly for cameras with a 1.25\" nosepiece. The tuning mechanism allows you to precisely set the 55mm back focus required for optimal correction on the camera's sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Tunable Top rotate my eyepiece when I adjust it?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the design is non-rotating. The helical mechanism moves the eyepiece holder up and down without spinning it, so your camera orientation or preferred eyecup position remains fixed.\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\u003eATT-2125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTele Vue Paracorr Type 2 (VIP-2010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping Mechanism\u003c\/td\u003e\n\u003ctd\u003eBrass Compression Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eStandard 1.25\" (M28.5 x 0.6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment\u003c\/td\u003e\n\u003ctd\u003eHelical, non-rotating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScale\u003c\/td\u003e\n\u003ctd\u003eEngraved Millimeter Markings\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\" Tunable Top for Paracorr Type 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":51223879745821,"sku":"TV-ATT-2125","price":206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Tunable_Top_1.jpg?v=1777515030","url":"https:\/\/davidastro.com\/en-us\/products\/tele-vue-tunable-top-with-adapter","provider":"David Astro","version":"1.0","type":"link"}