{"product_id":"tele-vue-2-5x-powermate-1-25-inch","title":"Tele Vue 2.5x Powermate - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMagnification: 2.5x\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 1.25\"\u003c\/li\u003e\n\u003cli\u003eOptical Design: 4-Element Pupillary Corrector\u003c\/li\u003e\n\u003cli\u003eCompatibility: Visual and Photographic Use\u003c\/li\u003e\n\u003cli\u003eFilter Threads: Yes (1.25\")\u003c\/li\u003e\n\u003cli\u003eWeight: 0.35 lbs (159 g)\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\/Software\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\u003eMore Than a Barlow: The Tele Vue 2.5x Powermate\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2.5x Powermate is a compact, professional-grade 1.25\" magnification amplifier designed to increase the power of your eyepieces and imaging cameras without the optical compromises of a standard Barlow lens. It uses a proprietary 4-element design to deliver sharp, high-contrast, and color-correct views, making it an essential tool for high-resolution planetary, lunar, and solar observation and 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\u003eThe Powermate's 4-Element Pupillary Corrector Design\u003c\/h3\u003e\n\u003cp\u003eUnlike a simple Barlow lens which moves the exit pupil and can introduce aberrations, the Tele Vue Powermate employs a sophisticated four-element optical system. This design functions as a pupillary corrector, keeping the exit pupil of your eyepiece in its natural position. The result is a view that is sharp across the entire field, free from the vignetting and edge-of-field astigmatism that can affect complex, wide-field eyepieces when used with a standard Barlow.\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\u003eFully Multi-Coated Optics for Maximum Contrast\u003c\/h3\u003e\n\u003cp\u003eEvery air-to-glass surface in the 2.5x Powermate receives Tele Vue's stringent multi-layer anti-reflection coatings. This meticulous process ensures maximum light transmission, minimizing internal reflections and ghosting. For the observer, this translates directly into higher contrast at the eyepiece, revealing subtle surface details on Jupiter's cloud bands or delicate rilles on the Moon that might otherwise be lost to scattered light.\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\u003eConstant Magnification and Preserved Eye Relief\u003c\/h3\u003e\n\u003cp\u003eA key advantage of the Powermate design is its consistent performance. The 2.5x magnification factor remains constant regardless of the eyepiece used, and it does not significantly shorten the eye relief of your favorite long-eye-relief eyepieces. This means you can enjoy the comfort of your Delos or Panoptic eyepieces while operating at higher power, a significant benefit for eyeglass wearers or anyone who dislikes crowding the 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\u003eTelecentric Performance for Specialized Filters\u003c\/h3\u003e\n\u003cp\u003eThe Powermate's optical system is telecentric, meaning it outputs light rays that are parallel to the optical axis. This is a critical feature for users of highly sensitive solar filters, particularly Hydrogen-alpha etalons, which require parallel light for their interference filters to function correctly. Using a Powermate ensures the filter's bandpass is not shifted, delivering a uniform, high-contrast solar image across the entire field of view.\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 High-Performance Photographic Amplifier\u003c\/h3\u003e\n\u003cp\u003eFor planetary imagers, the 2.5x Powermate acts as a high-performance telephoto lens for your camera sensor. It produces a flatter field than a typical Barlow, ensuring sharpness from the center to the edge of the chip. This is the tool you reach for when your telescope's native focal length isn't long enough to achieve the critical image scale needed to resolve craterlets near the lunar terminator or capture the Cassini Division in Saturn's rings with a high-speed planetary camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVersatile Mechanical and Threaded Design\u003c\/h3\u003e\n\u003cp\u003eThe Powermate is built for flexibility in the field. The 1.25\" barrel is threaded to accept standard 1.25\" filters, allowing you to add a moon filter or planetary color filter without unscrewing your eyepiece. For imagers, the top of the Powermate is threaded to accept the Tele Vue PMT-1125 T-Ring adapter, enabling a secure, direct connection to a DSLR or dedicated astronomy camera for a rigid 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\u003eThe Right Tool for High-Magnification Observing\u003c\/h3\u003e\n\u003cp\u003eImagine your 8\" SCT on a night of steady seeing, with Jupiter well-placed. A 10mm eyepiece yields 200x, but the atmosphere can support more. Inserting the 2.5x Powermate brings the magnification to 500x. As your eye settles, the image snaps into focus. You can now clearly distinguish multiple belts and zones, trace the intricate festoons within them, and watch the tiny, sharp disks of the Galilean moons transit the planet's face. This is the jump in performance the Powermate is 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 Note on Limitations and System Matching\u003c\/h3\u003e\n\u003cp\u003eWhile optically powerful, the 2.5x Powermate adds weight and length to the optical train. On smaller mounts or telescopes with limited back-focus, achieving balance can be a consideration. Furthermore, its high magnification factor demands good atmospheric seeing; on turbulent nights, the Powermate will amplify the turbulence just as effectively as it amplifies the target. It is a high-performance tool that rewards patience and steady skies.\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 Tele Vue Magnification Amplifier\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers several tools for increasing magnification, each with a specific purpose. Understanding the trade-offs helps you choose the right one for your observing style.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5x Powermate vs. 2x Barlow:\u003c\/strong\u003e The standard 2x Barlow is an excellent, compact choice for general-purpose visual use. The 2.5x Powermate is the superior option when using premium, wide-field eyepieces, for imaging, or with specialized solar filters due to its advanced 4-element, telecentric design that better controls aberrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5x Powermate vs. 5x Powermate:\u003c\/strong\u003e The 2.5x is the versatile, all-around choice for most telescopes and seeing conditions. The 5x Powermate is a specialist's tool, designed primarily for high-resolution planetary imaging with large-aperture telescopes on nights of exceptional atmospheric stability. For most visual observers, the 5x model provides more magnification than conditions will typically allow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a Powermate better than a Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor most applications, yes. The Powermate's 4-element design corrects for aberrations that Barlows can introduce, especially with wide-field eyepieces. It also keeps light rays parallel, which is critical for use with Hydrogen-alpha solar filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the 2.5x Powermate for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The 2.5x Powermate is an excellent choice for high-resolution lunar and planetary imaging. It creates a flat, sharp field and provides the image scale needed for small sensors to capture fine detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 2.5x Powermate work with my Nagler or Ethos eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is an ideal match. The Powermate's pupillary-correcting design means it will not introduce the aberrations or vignetting that can occur when using complex, wide-field eyepieces with a standard Barlow lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapter do I need to connect a camera to the 2.5x Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need the Tele Vue PMT-1125 T-Ring Adapter. This adapter threads directly onto the top of the Powermate, and you then attach the appropriate T-Ring for your specific camera brand (e.g., Canon EOS, Nikon F).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Powermate work in a 2\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, you can use the 1.25\" Powermate in a 2\" focuser with a standard 2\" to 1.25\" adapter. However, it is designed for use with 1.25\" eyepieces and accessories.\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\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eTV-PMT-2513\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e2.5x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e4-element, pupillary-correcting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003e1.25\" (M28.5 x 0.6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.35 lbs \/ 5.6 oz \/ 159 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e3.1\" \/ 79 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Barrel Diameter\u003c\/td\u003e\n\u003ctd\u003e1.6\" \/ 41 mm\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 2.5x Powermate - 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\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Dust Cap (Top)\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\"\u003e1.25\" Dust Cap (Bottom)\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_2.5x_Powermate_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":51223879876893,"sku":"TV-PMT-2513","price":260.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2.5x_Powermate_1.25in_1.jpg?v=1777515017","url":"https:\/\/davidastro.com\/en-us\/products\/tele-vue-2-5x-powermate-1-25-inch","provider":"David Astro","version":"1.0","type":"link"}