{"title":"TeleVue Visual Accessories","description":"\u003cp\u003eTeleVue visual accessories complete the optical path between telescope and eye. Powermate image amplifiers in 2x, 2.5x, 4x and 5x, along with 2x and 3x Barlows and the 2x BIG Barlow, raise magnification for planets and double stars.\u003c\/p\u003e\u003cp\u003eEverbrite and Enhanced Aluminum diagonals cover 1.25\" and 2\" use, the 2\" SCT RichField Kit adapts an SCT to 2\" eyepieces, and the FoneMate adapter holds a smartphone for quick photos.\u003c\/p\u003e","products":[{"product_id":"tele-vue-2x-powermate-2-inch","title":"Tele Vue 2x Powermate - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMagnification Factor: 2x\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 2\"\u003c\/li\u003e\n\u003cli\u003eOptical Design: 4-element Telecentric Amplifier\u003c\/li\u003e\n\u003cli\u003eCoatings: Fully Multi-Coated\u003c\/li\u003e\n\u003cli\u003eFilter Threads: Yes (48mm \/ 2\")\u003c\/li\u003e\n\u003cli\u003eWeight: 1.20 lbs (544g)\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\u003eBeyond the Barlow: High-Fidelity Planetary Amplification\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2x Powermate - 2\" is not a Barlow lens; it is a sophisticated 4-element telecentric amplifier designed to increase your telescope's magnification without the optical compromises inherent in traditional designs. This 2-inch model is the definitive choice for observers and imagers who require high-power views of the Moon and planets, delivering images that retain the full fidelity of the primary optics. It is engineered to be a transparent addition to your optical train, preserving sharpness, contrast, and field geometry.\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 Telecentric Optical Advantage\u003c\/h3\u003e\n\u003cp\u003eA standard Barlow lens works by diverging the light cone from your telescope's objective, which moves the exit pupil and can introduce spherical aberration, especially in fast telescopes. The Tele Vue Powermate's 4-element design corrects for this. It recaptures the diverging rays and re-collimates them, keeping the exit pupil in its original location and ensuring the light rays exit parallel to the optical axis.\u003c\/p\u003e\n\u003cp\u003eThis telecentric correction is what sets the Powermate apart. It means your eyepieces can operate as if they are looking directly at the telescope's objective, preserving their designed performance characteristics. The result is a uniformly sharp field, free of the edge-of-field astigmatism and color fringing that can soften views through a simple 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\u003eFidelity Through High-Transmission Coatings\u003c\/h3\u003e\n\u003cp\u003eEvery air-to-glass surface in the 2x Powermate is fully multi-coated with Tele Vue's proprietary index-matched coatings. This meticulous process minimizes light loss from reflection and maximizes transmission across the visual spectrum. The practical benefit is a brighter, higher-contrast image than what typical Barlows can provide.\u003c\/p\u003e\n\u003cp\u003eOn a target like Jupiter, this translates to more subtle detail in the cloud bands and a more distinct Great Red Spot. The improved contrast makes it easier to discern low-contrast features, such as festoons and ovals, against the planet's bright disk. There is no false color or \"ghosting,\" just the pure signal from your telescope, amplified.\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, Non-Marring Mechanical Interface\u003c\/h3\u003e\n\u003cp\u003eThe Powermate's mechanical construction is as robust as its optical design. The 2-inch barrel is machined from solid aluminum and features a chromed sleeve that resists wear and slides smoothly into your focuser. A captive brass clamp ring, tightened by a single oversized thumbscrew, provides a secure grip on your eyepieces or camera nosepiece.\u003c\/p\u003e\n\u003cp\u003eThis design prevents the common problem of marred barrels caused by simple set screws. It also ensures a perfectly centered alignment of the eyepiece with the Powermate's optics, which is critical for maintaining optical performance at high magnifications. This solid, repeatable connection gives you confidence that your expensive eyepieces and cameras are held safely.\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 2-Inch Filter Threads\u003c\/h3\u003e\n\u003cp\u003eFor planetary observers, filters are essential tools for enhancing specific details. The 2x Powermate's barrel is threaded to accept standard 48mm (2-inch) filters. This allows you to attach a Moon filter, a color filter for enhancing planetary features, or even a light pollution filter directly to the Powermate.\u003c\/p\u003e\n\u003cp\u003ePlacing the filter before the eyepiece and Powermate optics is often preferable, as it minimizes any potential reflections that could occur between the filter and the eyepiece's field lens. It also simplifies your workflow, allowing you to leave a commonly used filter attached to the Powermate and switch eyepieces without having to re-thread the filter each time.\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 View from the Cassini Division\u003c\/h3\u003e\n\u003cp\u003eImagine your 10-inch SCT is aimed at Saturn on a night of steady seeing. With a 24mm wide-field eyepiece, you get a pleasing 83x view, but the rings are just a bright, flat oval. You insert the 2x Powermate, and the magnification jumps to 166x. The planet swells to fill more of the field, and the image remains perfectly sharp.\u003c\/p\u003e\n\u003cp\u003eThe first thing you notice is the clean, dark gap of the Cassini Division, now resolved as a distinct black line tracing the circumference of the rings. The subtle shading of the Crepe Ring inside the main rings becomes visible. With a moment of steady air, you can even pick out the faint banding on Saturn's globe itself. This is the Powermate's function: it delivers the magnification needed for fine detail without degrading the image your telescope worked so hard to 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\u003eEngineered for High-Resolution Imaging\u003c\/h3\u003e\n\u003cp\u003eThe Powermate's telecentric design makes it an ideal amplifier for imaging. Because it produces parallel light rays, it is much more forgiving of camera sensor placement than a Barlow. This makes it a perfect match for planetary cameras, webcams, and DSLRs used in \"eyepiece projection\" mode.\u003c\/p\u003e\n\u003cp\u003eWith the optional Tele Vue PMT-2200 T-Ring Adapter, you can connect your camera body directly to the Powermate for a secure, threaded connection. This solid imaging train is essential for high-resolution lunar and planetary photography, eliminating the potential for flexure and ensuring your 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\u003ePowermate vs. Barlow: A Critical Distinction\u003c\/h3\u003e\n\u003cp\u003eChoosing the right magnification tool depends on your equipment and goals. The 2-inch 2x Powermate occupies a specific performance niche.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 2x BIG Barlow:\u003c\/strong\u003e The BIG Barlow is an excellent visual accessory that provides a more affordable path to 2x amplification. However, the Powermate's telecentric correction provides a distinct advantage for imagers and for visual use in very fast (f\/4-f\/5) telescopes, where it better controls aberrations and maintains eyepiece performance. For critical planetary work, the Powermate is the superior optical tool.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 4x Powermate:\u003c\/strong\u003e The 4x Powermate is a specialized tool for nights of exceptional seeing or for imagers using large pixels who need to achieve a specific image scale. The 2x Powermate is far more versatile, providing a magnification boost that is usable on average nights with a wider range of telescopes and eyepieces. The 2x is the workhorse of the Powermate family.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe primary trade-off for the Powermate's optical performance is its size, weight, and cost compared to a standard Barlow. At 1.20 lbs, it requires a robust focuser and may necessitate re-balancing your telescope. However, for those who refuse to compromise on image quality, this is a trade-off that delivers a clear, visible return at the eyepiece.\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\"\u003eIs the Powermate really better than a good Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor most visual use, the difference can be subtle, but for imaging and use with fast telescopes (f\/5 or lower), the Powermate's telecentric design provides a flatter, sharper field by not moving the exit pupil. It maintains the performance of your eyepieces more faithfully than a Barlow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the 2\" Powermate with 1.25\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The 2\" 2x Powermate comes with a 1.25\" adapter that fits in its eyepiece end. This allows you to use your 1.25\" eyepieces while taking advantage of the Powermate's optical quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 2x Powermate work for deep-sky observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed for high-power planetary viewing, it can be used to increase magnification on smaller deep-sky objects like planetary nebulae (e.g., the Ring Nebula, M57) or to split tight double stars. However, it will dim the image, as any magnification increase does.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach a camera to the 2x Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need the Tele Vue PMT-2200 T-Ring Adapter. This accessory threads onto the top of the Powermate, providing standard T-threads for connecting a DSLR-specific T-ring or a planetary imaging camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 2\" Powermate heavy? Will my focuser handle it?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2\" 2x Powermate weighs 1.20 lbs (544g). While most modern 2-inch Crayford or rack-and-pinion focusers can handle the weight, it is a significant load. Ensure your focuser's tension is properly adjusted to prevent slipping, and be prepared to re-balance your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003ePMT-2200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e2x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e4-element telecentric amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Coatings\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\u003e48mm (for 2\" filters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.20 lbs \/ 544 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e4.8\" \/ 122 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Barrel Diameter\u003c\/td\u003e\n\u003ctd\u003e2.7\" \/ 68.6 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 2x Powermate - 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\"\u003e2\" to 1.25\" Eyepiece Adapter\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\"\u003eTop 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\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_2x_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":51223879844125,"sku":"TV-PMT-2200","price":543.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2x_Powermate_2in_1.jpg?v=1777515018"},{"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: 0.45 lbs (204 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 PTR-1250 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 PTR-1250 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\u003e0.45 lbs \/ 7.2 oz \/ 204 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":364.0,"currency_code":"CAD","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"},{"product_id":"tele-vue-4x-powermate-2-inch","title":"Tele Vue 4x Powermate - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMagnification Factor: 4x\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 2\"\u003c\/li\u003e\n\u003cli\u003eOptical Design: 4-Element Pupillary Corrector\u003c\/li\u003e\n\u003cli\u003eCompatibility: 2\" and 1.25\" Eyepieces (with adapter)\u003c\/li\u003e\n\u003cli\u003ePrimary Use: High-Magnification Visual and 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\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\u003eReach Deeper with the Tele Vue 4x Powermate\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTele Vue 4x Powermate - 2\"\u003c\/strong\u003e is a professional-grade magnification amplifier, engineered to quadruple the power of your eyepieces or imaging camera without the optical compromises of a standard Barlow lens. It is the definitive choice for serious planetary observers and imagers seeking the highest levels of magnification while preserving the optical integrity of their telescope system. This is not just a Barlow; it is a sophisticated, four-element optical system designed for uncompromising performance.\u003c\/p\u003e\n\u003cp\u003eFor observers with fast Dobsonian reflectors or Schmidt-Cassegrains, the 4x Powermate delivers the extreme focal lengths necessary to resolve fine details on Jupiter's cloud belts, Cassini's Division in Saturn's rings, and subtle albedo features on Mars. It allows you to use your comfortable, long eye relief, low-power eyepieces for high-power observing, transforming them into planetary performers. The result is a level of magnification that is sharp, bright, and free of the aberrations that can plague simpler amplifier designs.\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 Optical Concept\u003c\/h3\u003e\n\u003cp\u003eUnlike a conventional Barlow lens, which diverges light rays, the Tele Vue 4x Powermate features a four-element, pupillary-correcting design. This sophisticated system re-collimates the light exiting the Powermate, making the rays parallel to the optical axis. This telecentric output is the key to its superior performance, especially with modern, wide-field eyepieces.\u003c\/p\u003e\n\u003cp\u003eThe practical benefit is that the Powermate does not alter the eyepiece's intended eye relief or introduce spherical aberration to the exit pupil. Your long eye relief 2\" eyepiece remains comfortable to use, and the field remains sharp from edge to edge. This is a critical distinction that sets the Powermate in a class of its own for high-power visual 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\u003eTelecentric Performance for Imaging and Solar\u003c\/h3\u003e\n\u003cp\u003eThe telecentric output of the 4x Powermate is a significant advantage for specialized applications. For hydrogen-alpha solar observing with etalon-based filters, this parallel light path is essential. It ensures the filter's bandpass remains consistent across the entire field of view, preventing off-axis hot-spotting and delivering a uniform, high-contrast solar disk.\u003c\/p\u003e\n\u003cp\u003eFor planetary imagers, the telecentric design means the magnification factor remains constant regardless of the camera's distance from the top of the Powermate. This consistency simplifies achieving the correct image scale for optimal sampling with your specific camera sensor. It effectively turns your telescope into a longer focal ratio instrument without introducing the optical compromises of a traditional 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\u003eHigh-Transmission Multi-Coated Optics\u003c\/h3\u003e\n\u003cp\u003eEvery air-to-glass surface in the 4x Powermate receives Tele Vue's proprietary multi-layer coatings. These advanced coatings are optimized for high transmission across the visual spectrum, ensuring that the magnified image is as bright and high-contrast as possible. This is not a system that dims the view; it simply enlarges it.\u003c\/p\u003e\n\u003cp\u003eMaximizing light throughput is critical when working at the high magnifications this unit provides. By minimizing reflections and internal scattering, the Powermate delivers a clean, crisp image with a dark background. This allows you to push your telescope to its theoretical limits on nights of good seeing, teasing out faint planetary details that would otherwise be lost in glare.\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 Connections\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eTele Vue 4x Powermate - 2\"\u003c\/strong\u003e is built for heavy-duty use with large 2\" eyepieces and imaging equipment. The chromed 2\" barrel provides a durable, smooth surface that slides easily into your focuser and resists wear. A captive setscrew ensures you cannot accidentally drop the screw in the dark.\u003c\/p\u003e\n\u003cp\u003eInside the eyepiece holder, a soft brass clamp ring provides a secure grip on your accessories without marring their barrels. Unlike a simple thumbscrew that digs into the barrel, this compression ring distributes pressure evenly, protecting your investment in premium eyepieces and cameras while ensuring a perfectly centered optical alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA High-Power Planetary Imaging Lens\u003c\/h3\u003e\n\u003cp\u003eThe optical section of the 4x Powermate can be unthreaded from its 2\" barrel, revealing a male thread. With the addition of a PMT-4201 T-Ring Adapter, you can connect a DSLR or astronomical camera directly to the Powermate optics. This converts the unit into a high-quality 4x teleconverter for planetary, lunar, or solar imaging.\u003c\/p\u003e\n\u003cp\u003eImagine using an 8\" SCT at its native 2000mm focal length. The 4x Powermate transforms it into an 8000mm (f\/40) planetary imaging instrument, perfectly scaled for capturing fine detail with modern high-speed video cameras. This versatility makes it a dual-purpose tool for both visual observers and dedicated astrophotographers.\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\u003eExperiencing Jupiter at 4x\u003c\/h3\u003e\n\u003cp\u003eConsider an 8-inch, f\/10 Schmidt-Cassegrain telescope on a night of steady seeing. Inserting a 24mm wide-field eyepiece yields a modest 83x magnification. Now, add the 4x Powermate. The magnification jumps to 332x, a power level where Jupiter resolves from a bright disk into a detailed globe.\u003c\/p\u003e\n\u003cp\u003eAs your eye settles, the image snaps into focus. The two main equatorial belts are no longer simple stripes but complex zones with internal swirls and festoons. You can clearly distinguish the color difference between the North and South Equatorial Belts, and with patience, you might spot smaller ovals and barges within the zones. The Great Red Spot, if visible, appears as a distinct, salmon-colored oval, not just a hint of color. This is the power of the Powermate: it unlocks the full resolving potential of your telescope on the solar system's most challenging targets.\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 Magnification: Powermate vs. Barlow\u003c\/h3\u003e\n\u003cp\u003eThe Tele Vue lineup offers several magnification options, and choosing the right one depends on your telescope and goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. 2x Powermate:\u003c\/strong\u003e The 2x is a versatile, all-around performer suitable for most telescopes. The 4x is a specialist's tool, intended for when you need the maximum practical magnification your telescope and seeing conditions will allow. It is the right choice when the 2x simply doesn't provide enough image scale for small planetary disks or tiny planetary nebulae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue Barlows:\u003c\/strong\u003e A Tele Vue Barlow is an excellent choice for visual use and is more compact. However, the Powermate's telecentric design gives it a distinct advantage for imaging and for use with complex, multi-element eyepieces, where it maintains the designed optical performance without introducing aberrations. The Powermate is the more flexible and optically pure solution, especially at this high 4x factor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA genuine limitation of the 4x Powermate is its sensitivity to atmospheric seeing. A 4x magnification factor will also amplify any turbulence in the air. This tool requires steady skies to deliver its best performance, and on nights of poor seeing, a lower-power amplifier like a 2x model may provide a more pleasing view.\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\"\u003eIs a 4x Powermate too much power for my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor planetary viewing, a good rule of thumb for maximum useful magnification is 50x to 60x per inch of aperture. A 4x Powermate is ideal for 8\" or larger telescopes on nights of good seeing. For smaller scopes, it may exceed the useful magnification limit unless used for imaging where short exposures can \"freeze\" the seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between a Powermate and a Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA Barlow lens diverges light, which can change an eyepiece's eye relief and introduce aberrations. A Powermate is a 4-element telecentric amplifier that keeps light rays parallel, preserving the eyepiece's native performance and providing a sharper image, especially for imaging and with wide-field eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the 4x Powermate for deep-sky observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile possible, it's not its primary purpose. The 4x Powermate is designed for extreme high magnification on bright objects like the Moon and planets. For most deep-sky objects, which are faint and extended, you will want lower magnification to maintain a brighter image and a wider field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 4x Powermate work with my 1.25\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The 2\" Powermate includes a 2\" to 1.25\" adapter, allowing you to use all of your 1.25\" eyepieces securely. The brass clamp ring on the adapter ensures your smaller eyepiece barrels will not be scratched.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the 4x Powermate for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need the Tele Vue PMT-4201 T-Ring adapter. This adapter allows you to unthread the optical cell from the 2\" barrel and connect it directly to a camera-specific T-ring, creating a solid, threaded connection for high-magnification planetary imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the 4x Powermate require a lot of focuser in-travel or out-travel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 4x Powermate is nearly \"parfocal,\" meaning it requires very little refocusing when inserted into the optical train. This makes it easy to switch between observing with and without it during a session without major focuser adjustments.\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 SKU\u003c\/td\u003e\n\u003ctd\u003eTV-PMT-4201\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e4x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e4-Element Pupillary Corrector\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e19.2 oz (1.20 lbs \/ 544 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e5.2\" (132 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Barrel Diameter\u003c\/td\u003e\n\u003ctd\u003e2.7\" (68.6 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003eBrass Clamp Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes (2\")\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 4x Powermate - 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\"\u003e2\" to 1.25\" Eyepiece Adapter\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\"\u003eTop 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\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_4x_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":51223879909661,"sku":"TV-PMT-4201","price":554.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_4x_Powermate_2in_1.jpg?v=1777515018"},{"product_id":"tele-vue-5x-powermate-1-25-inch","title":"Tele Vue 5x Powermate - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMagnification Factor: 5x\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 1.25\"\u003c\/li\u003e\n\u003cli\u003eOptical Design: 4-Element Telecentric\u003c\/li\u003e\n\u003cli\u003eWeight: 0.40 lbs \/ 181g\u003c\/li\u003e\n\u003cli\u003eTotal Height: 3.1\" \/ 79mm\u003c\/li\u003e\n\u003cli\u003eT-Ring Adapter Ready: Yes (Model PTR-1250)\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\u003eReach the Solar System's Most Elusive Details\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 5x Powermate - 1.25\" is a high-magnification visual and imaging accessory that functions as a compact, four-element telecentric amplifier. It delivers a five-fold increase in magnification with optical performance that a standard Barlow lens cannot match, making it the definitive choice for serious planetary, lunar, and double-star observers who require maximum power and image fidelity.\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 Smarter Approach to High-Power Astronomy\u003c\/h3\u003e\n\u003cp\u003eA conventional Barlow lens works by diverging the light cone from the objective, which introduces optical aberrations, particularly with fast f\/ratio telescopes. The Powermate's innovative 4-element telecentric design functions differently. It re-images the focal plane with parallel exiting rays, which means the eyepiece performs as if it were simply viewing a much larger, longer focal length telescope.\u003c\/p\u003e\n\u003cp\u003eThis telecentric correction results in a view that is sharply focused across the entire field, free of the edge-of-field astigmatism and induced field curvature that can soften the image in a simple Barlow. For you, the observer, this means pinpoint stars to the edge of the field and a consistently sharp planetary disk, even in fast Newtonians or apochromatic 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\u003eDesigned for Critical Planetary Imaging\u003c\/h3\u003e\n\u003cp\u003eThe 5x Powermate is an essential tool for high-resolution planetary imaging. Its telecentric output ensures that the focal plane is flat and the image scale remains constant, regardless of the camera's sensor position. This makes it a preferred choice over Barlows for achieving the large image scales needed to resolve fine details on Jupiter, Saturn, and Mars with modern CMOS cameras.\u003c\/p\u003e\n\u003cp\u003eThe optical housing is designed to unthread from the barrel, allowing direct connection to a camera via a dedicated Powermate T-Ring Adapter. This rigid, threaded connection eliminates any potential for flexure or tilt that can occur with standard nosepiece setups, preserving the alignment critical for capturing sharp, high-contrast images of subtle planetary features.\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 Experience at 5x Magnification\u003c\/h3\u003e\n\u003cp\u003eThis level of magnification demands steady atmospheric seeing, but when conditions permit, the results are transformative. With a modest telescope like an 8-inch SCT and a 20mm Plössl eyepiece, the 5x Powermate yields 500x. On a good night, Jupiter's Galilean moons resolve from star-like points into distinct, tiny orbs. The Great Red Spot reveals its intricate, swirling texture, and you can trace the subtle festoons and eddies within the equatorial belts.\u003c\/p\u003e\n\u003cp\u003eOn Saturn, the Cassini Division becomes a sharp, black gap rather than a faint pencil line. You may even glimpse the much harder Encke Gap in the outer A ring. This is the Powermate's core function: it pushes your telescope to its absolute resolution limit, revealing details that are simply inaccessible at lower powers.\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\u003eParfocal and Mechanically Sound\u003c\/h3\u003e\n\u003cp\u003eTele Vue has engineered the Powermate to be nearly parfocal. When you insert it into your diagonal, your eyepiece will require minimal refocusing. This practical feature makes it easy to switch between low-power finding views and high-power detailed views without losing your target.\u003c\/p\u003e\n\u003cp\u003eThe physical construction reflects Tele Vue's commitment to quality. The chromed barrel features a safety undercut to prevent it from accidentally slipping out of the focuser, while a non-marring brass clamp ring secures your eyepiece without scratching its barrel. This ensures a secure, perfectly centered optical train every time.\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 Limitation: Atmospheric Seeing\u003c\/h3\u003e\n\u003cp\u003eThe primary constraint for any high-power accessory is the Earth's atmosphere. At 5x magnification, even minor atmospheric turbulence will be amplified, causing the image to shimmer or \"boil.\" This is not a flaw in the Powermate; it is the reality of high-resolution observing. The 5x Powermate is a special-purpose tool, best reserved for those nights of excellent seeing when the air is steady and your telescope can deliver its best performance.\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 Powermate\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers a family of Powermates, and selecting the right one depends on your telescope and goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. 2.5x Powermate:\u003c\/strong\u003e The 2.5x is a more versatile, all-purpose choice that works well on average nights. The 5x is a specialist's tool, designed to achieve the largest possible image scale for imaging or for visual use on the very best nights with long focal length telescopes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. 4x Powermate (2\"):\u003c\/strong\u003e The 4x offers a similar magnification boost but in a 2-inch format, better suited for large, heavy 2-inch eyepieces. The 1.25\" 5x is lighter and designed for the smaller, shorter focal length eyepieces typically used for planetary viewing.\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 5x Powermate better than a 5x Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, optically it is. The Powermate's 4-element telecentric design corrects for aberrations that a simple 2-element Barlow lens cannot. This results in a sharper, flatter field of view, especially in fast telescopes, and it is a superior choice for planetary imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the best use for the 5x Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt excels at high-resolution planetary and lunar imaging, where you need to achieve a large image scale to resolve very fine details. Visually, it is used for splitting tight double stars and for planetary observation on nights of exceptionally steady atmospheric seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 5x Powermate work with my 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 1.25\" focuser. However, it provides very high magnification. For a telescope with a long focal length like an SCT or Maksutov, you will need eyepieces with longer focal lengths (e.g., 20mm to 25mm) to achieve a usable magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the image blurry when I use the 5x Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt such high power, the image quality is almost always limited by atmospheric turbulence (\"seeing\"), not the optics. If the air is unsteady, the image will appear to shimmer or boil. The 5x Powermate is a specialized tool that requires calm atmospheric conditions to perform at its best.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach a camera to the 5x Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need the Tele Vue Powermate T-Ring Adapter (model PTR-1250). You unscrew the chrome barrel from the black optical housing and thread the adapter in its place. This allows you to securely attach a DSLR or dedicated astronomy camera via its T-ring.\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 SKU\u003c\/td\u003e\n\u003ctd\u003eTV-PMT-5126\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e5x\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 telecentric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.40 lbs \/ 181 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight (in focuser)\u003c\/td\u003e\n\u003ctd\u003e2.2\" \/ 56 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Height\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\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003eBrass Clamp Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT-Ring Adapter\u003c\/td\u003e\n\u003ctd\u003eTele Vue PTR-1250 (sold separately)\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 5x Powermate - 1.25 inch\" src=\"\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTele Vue 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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 1.25-inch Top Dust Cap\" src=\"\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTop 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\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 1.25-inch Bottom Dust Cap\" src=\"\"\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_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":51223879975197,"sku":"TV-PMT-5126","price":364.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_5x_Powermate_1.25in_1.jpg?v=1777515018"},{"product_id":"tele-vue-2x-barlow-1-25-inch","title":"Tele Vue 2x Barlow - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMagnification Factor: 2x\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 1.25\"\u003c\/li\u003e\n\u003cli\u003eOptical Design: 2-Element, Fully Multi-Coated\u003c\/li\u003e\n\u003cli\u003eEyepiece Holder: Brass Compression Ring\u003c\/li\u003e\n\u003cli\u003eFilter Threads: Yes (1.25\")\u003c\/li\u003e\n\u003cli\u003eWeight: 5 oz (142 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\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\u003eDouble Your Magnification, Not Your Eyepiece Collection\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2x Barlow - 1.25\" is a foundational accessory designed to double the power of any 1.25\" eyepiece with exceptional optical quality. It effectively doubles the utility of your existing eyepiece set, providing a high-performance, cost-effective way to access higher magnifications for planetary, lunar, and double-star observing without compromising image integrity.\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-Contrast 2-Element Optical System\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Tele Vue 2x Barlow is a two-element, fully multi-coated optical design. This is not just a simple magnifier. The lens group is engineered to be a seamless extension of your eyepiece, preserving the sharpness, contrast, and color fidelity of the original view, just at twice the magnification.\u003c\/p\u003e\n\u003cp\u003eThe high-transmission coatings on every air-to-glass surface ensure that scattering and reflections are minimized. This results in a darker background sky and allows subtle details on bright objects, like the Cassini Division in Saturn's rings or the delicate banding on Jupiter, to resolve 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\u003eParfocal Integration with Tele Vue Eyepieces\u003c\/h3\u003e\n\u003cp\u003eThis Barlow is designed to integrate smoothly into your observing workflow, especially if you use Tele Vue Plössl or Panoptic eyepieces. It is nearly parfocal, meaning you will need little to no refocusing when inserting or removing the Barlow. This is a significant practical advantage in the field.\u003c\/p\u003e\n\u003cp\u003eImagine you are observing Jupiter with a 25mm Plössl. When you add the 2x Barlow to get a closer look, the planet snaps back into focus with a minimal turn of the knob. This keeps your target centered and your attention on the view, not on the mechanics of the 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 Security of a Brass Compression Ring\u003c\/h3\u003e\n\u003cp\u003eMany simple Barlows use a basic thumbscrew that presses directly against your eyepiece barrel, causing scratches and dents over time. The Tele Vue 2x Barlow incorporates a non-marring brass compression ring. When you tighten the thumbscrew, this soft metal ring gently and uniformly tightens around the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis mechanism provides two key benefits. First, it protects your investment in quality eyepieces by preventing cosmetic damage. Second, it ensures a more secure and perfectly centered connection, which is critical for maintaining optical alignment at high power.\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\u003eThoughtful Mechanical Design for Field Use\u003c\/h3\u003e\n\u003cp\u003eEvery mechanical detail is built for reliability. The main barrel features a safety undercut, a groove that catches the focuser's thumbscrew if it loosens unexpectedly. This simple feature can prevent the Barlow and your expensive eyepiece from falling to the ground on a cold, dark night.\u003c\/p\u003e\n\u003cp\u003eThe lens element itself is housed in a cell that can be unscrewed from the main barrel. This cell has standard 1.25\" filter threads, allowing you to attach a planetary or moon filter directly to the Barlow. This versatility lets you experiment with different optical configurations, including increasing the magnification factor by adding extension tubes.\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\u003eObserving Jupiter's Great Red Spot\u003c\/h3\u003e\n\u003cp\u003eWith a 13mm Nagler eyepiece in an 8\" f\/10 SCT, you have 154x magnification, a good power for general planetary viewing. Now, insert the Tele Vue 2x Barlow. The magnification jumps to 308x, pushing the limits of atmospheric seeing but bringing Jupiter's disk to an impressive size.\u003c\/p\u003e\n\u003cp\u003eAs your eye settles, the view is not just larger, it remains sharp. The Great Red Spot, often a subtle salmon-colored oval, now shows hints of internal texture. You can more easily discern smaller, transient storms and the intricate whorls within the North and South Equatorial Belts. This is the difference a high-quality Barlow makes, transforming a good view into a detailed study.\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 Foundational Tool for High-Resolution Observing\u003c\/h3\u003e\n\u003cp\u003eThe primary trade-off with any Barlow is the addition of more glass to the light path. While Tele Vue's design minimizes light loss and reflections, a single long-focal-length eyepiece will theoretically have slightly higher throughput. However, the Tele Vue 2x Barlow provides a level of versatility and optical performance that makes it an indispensable tool for nearly any observer.\u003c\/p\u003e\n\u003cp\u003eFor observers who want to get the most out of a curated set of high-quality eyepieces, this Barlow is the right choice. It provides access to the high-power realm required for serious planetary and double-star work without the cost and bulk of a dedicated set of short-focal-length 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\u003eChoosing the Right Tele Vue Magnifier\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers several magnification solutions. Understanding their design intent helps you choose the right one for your specific needs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x Barlow:\u003c\/strong\u003e The classic choice for visual observing. It is lightweight, simple, and optimized to deliver high-contrast, high-magnification views with any eyepiece. Its primary purpose is to double the magnification for planetary, lunar, and double star observation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3x Barlow:\u003c\/strong\u003e Offers more power in the same compact form factor. This is an excellent choice for short-focal-length telescopes where achieving very high magnifications for planetary imaging or splitting tight double stars is the main goal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowermate:\u003c\/strong\u003e A more complex 4-element design that acts as a pupil-correcting image amplifier. Powermates are specifically engineered to be telecentric, meaning they do not move the exit pupil or change the eye relief of the eyepiece. This makes them a superior choice for imaging and for use with long-focal-length eyepieces where a standard Barlow might introduce vignetting.\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\"\u003eWill the Tele Vue 2x Barlow work with any brand of eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is compatible with any standard 1.25\" eyepiece. While it is parfocal with many Tele Vue eyepieces, it will perform exceptionally well optically with eyepieces from any manufacturer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between a Barlow and a Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA Barlow is a diverging lens that increases magnification but can alter the eyepiece's eye relief and exit pupil position. A Powermate is a 4-element telecentric amplifier that increases magnification while keeping the eyepiece's optical properties intact, making it a better choice for imaging and long-focal-length eyepieces.\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 Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the bottom lens element cell has standard 1.25\" (M28.5 x 0.6) threads, allowing you to attach any standard 1.25\" filter directly to the Barlow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I get more than 2x magnification from this Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can increase the magnification by unscrewing the black barrel and adding a 1.25\" extension tube between the Barlow's lens element and the eyepiece. The farther the eyepiece is from the lens, the higher the magnification will be.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Tele Vue Barlow worth the price compared to cheaper models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Tele Vue 2x Barlow uses high-quality glass, superior multi-coatings, and a non-marring compression ring. These features result in sharper, higher-contrast images and protect your eyepieces from damage, justifying the investment for serious observers.\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\u003eBLW-2125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e2x\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\u003e2-element, fully multi-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\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\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\u003e5 oz (142 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e2.7\" (69 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 2x Barlow - 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\"\u003eTop 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\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_2x_Barlow_1.25-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":51223880073501,"sku":"TV-BLW-2125","price":214.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2x_Barlow_1.25in_1.jpg?v=1777515017"},{"product_id":"tele-vue-2x-big-barlow-2-inch","title":"Tele Vue 2x BIG Barlow - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMagnification Factor: 2x\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 2\" with 1.25\" Adapter\u003c\/li\u003e\n\u003cli\u003eOptical Design: 4-Element, Telecentric\u003c\/li\u003e\n\u003cli\u003eCoatings: Fully Multi-Coated\u003c\/li\u003e\n\u003cli\u003eFilter Threads: Yes (48mm for 2\" Filters)\u003c\/li\u003e\n\u003cli\u003eWeight: 0.75 lbs \/ 340 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\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\u003eDouble the Power, Not the Problems\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 2x BIG Barlow - 2\" is an amplification lens engineered to double the magnification of your eyepieces without compromising the optical integrity of your telescope system. Designed for observers who use premium 2\" and 1.25\" eyepieces, this is not a simple two-element Barlow. It is a sophisticated four-element telecentric amplifier that delivers high-contrast, high-fidelity views for both visual observation and imaging.\u003c\/p\u003e\n\u003cp\u003eIts primary purpose is to increase magnification while preserving the eye relief of your favorite long focal length eyepieces and maintaining a flat, well-corrected field. For the planetary observer or high-resolution deep-sky enthusiast, the Big Barlow transforms a low-power eyepiece into a high-power planetary instrument with a single motion, often with little to no refocusing required.\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 Smarter Optical Path for High Magnification\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Big Barlow is a four-element, telecentric optical design. Unlike a traditional Barlow that diverges the light cone, this system keeps the exiting light rays parallel to the optical axis. This subtle but critical difference is what allows it to be nearly \"parfocal,\" meaning you will not have to substantially change focus when you insert it into the optical train.\u003c\/p\u003e\n\u003cp\u003eThis design also corrects for spherical aberration that can be introduced when using long focal-length eyepieces. The result is a sharper, higher-contrast image across the entire field of view. Stars remain tight pinpoints from the center to the edge, a performance characteristic that simpler Barlows often fail to achieve, especially in fast 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\u003eMaximum Light Throughput with Multi-Coatings\u003c\/h3\u003e\n\u003cp\u003eEvery air-to-glass surface in the Big Barlow is multi-coated with Tele Vue's proprietary high-transmission coatings. This ensures that the maximum amount of light from your telescope's objective reaches your eye or camera sensor. The practical effect is a brighter, higher-contrast image with minimized ghosting and internal reflections.\u003c\/p\u003e\n\u003cp\u003eWhen you are pushing your telescope to its magnification limits on a target like Jupiter, this increased contrast makes a real difference. Faint festoons in the cloud belts and subtle color variations in the zones become more perceptible because stray light has been effectively suppressed within the 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\u003eSeamless Integration with Parfocal Performance\u003c\/h3\u003e\n\u003cp\u003eOne of the most practical benefits of the Big Barlow's design is its parfocal nature. You can switch between observing with an eyepiece alone and with the Big Barlow in place and require only a minimal tweak of the focuser. This is a significant workflow advantage in the field, especially during nights of good seeing when you want to quickly increase power to catch fleeting planetary detail.\u003c\/p\u003e\n\u003cp\u003eWith a 32mm Plössl, you can frame the entire Double Cluster in Perseus. Insert the Big Barlow, and without a major focus change, you are now observing the core of one of the clusters at twice the power, resolving individual star colors. This seamless transition from low-power finding to high-power observing is what sets this amplifier apart.\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\u003eVersatile Eyepiece Compatibility with the 1.25\" Adapter\u003c\/h3\u003e\n\u003cp\u003eThe Big Barlow is designed to be the only amplification lens you need. It includes a high-quality 2\" to 1.25\" adapter that features a non-marring brass clamp ring. This ensures your smaller, high-end eyepieces are held securely and perfectly centered in the optical path without scratching their barrels.\u003c\/p\u003e\n\u003cp\u003eThis versatility means you can use your entire eyepiece collection, from a massive 2\" wide-field eyepiece for deep-sky vistas to a small 1.25\" planetary eyepiece for lunar and planetary work. The robust build quality easily handles the weight and leverage of even the heaviest eyepieces in the Tele Vue lineup.\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 Filter Integration for Enhanced Views\u003c\/h3\u003e\n\u003cp\u003eThe 2\" barrel of the Big Barlow is threaded to accept standard 48mm astronomical filters. This allows you to place a filter, such as a nebula filter or a planetary color filter, in the optical train before the eyepiece. This is particularly useful for enhancing contrast on specific targets.\u003c\/p\u003e\n\u003cp\u003eFor example, you can thread in a UHC or OIII filter and use the Big Barlow to increase the image scale on a target like the Orion Nebula (M42). The filter darkens the sky background, and the Barlow brings the fine details of the Trapezium region into clear view, all while using a comfortable, long eye relief 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\u003eBuilt for Stability and Security\u003c\/h3\u003e\n\u003cp\u003eWeighing in at just over a pound, the Big Barlow is a substantial piece of equipment. Its all-metal construction is designed to prevent any flexure, even when holding heavy 2\" eyepieces like a 31mm Nagler. This mechanical rigidity is essential for maintaining optical alignment at high magnifications.\u003c\/p\u003e\n\u003cp\u003eThe one genuine trade-off for this performance is its weight and size. It requires a robust 2\" focuser and may necessitate re-balancing the telescope, particularly on smaller mounts. However, this is a necessary compromise to achieve a stable, flex-free optical train capable of supporting the best eyepieces available.\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 Amplifier: Big Barlow vs. Powermate\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers two distinct families of amplifiers. The choice depends on your primary application.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTele Vue 2x Big Barlow:\u003c\/strong\u003e This is the ideal choice for visual observers who want a simple, high-performance 2x multiplier that is nearly parfocal and preserves the eyepiece's eye relief. It is optimized for placing between the telescope and the eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTele Vue 2x Powermate:\u003c\/strong\u003e The Powermate is the superior choice for imaging. Its telecentric design is specifically engineered to work well with coma correctors and to be used in front of a diagonal for applications like Hydrogen-alpha solar observing, where it acts as a secondary telecentric element. For visual use, its performance is similar to the Big Barlow, but for imaging, the Powermate offers more flexibility.\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 the Big Barlow the same as a Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, while both use a 4-element design, the Big Barlow is optimized for visual use and being parfocal. The Powermate is a true telecentric amplifier designed for both visual and imaging, offering more flexibility for complex imaging trains and solar applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 2x Big Barlow work with my fast f\/4.5 Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 4-element design provides excellent correction and maintains sharp star images even in fast optical systems. It is a much better choice for fast scopes than a standard 2-element Barlow, which can induce aberrations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to rebalance my telescope when I use this?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt over one pound, it is very likely you will need to adjust your telescope's balance, especially when switching from a lightweight 1.25\" eyepiece. It is best suited for telescopes with sturdy focusers and mounts that can handle the extra weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I thread a 2\" filter onto the Big Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 2\" barrel is threaded for standard 48mm filters. This allows you to add a filter to the optical path before the eyepiece, which is useful for nebula or planetary observing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this better than a standard, cheaper 2\" Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Big Barlow's 4-element telecentric design offers superior aberration control, maintains the eye relief of your eyepiece, and is nearly parfocal. Cheaper 2-element designs often result in softer images, especially at the field edge, and require significant refocusing.\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-BWC-2211\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e2x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter\u003c\/td\u003e\n\u003ctd\u003e2\" to 1.25\" with brass clamp ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e4-element, telecentric\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\u003eAccepts 48mm (2\") filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.75 lbs \/ 12 oz \/ 340 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e4.8\" \/ 122 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 2x BIG Barlow - 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\"\u003e2\" to 1.25\" Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" 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\"\u003e2\" 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_2x_BIG_Barlow_2-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":51223880106269,"sku":"TV-BWC-2211","price":364.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2x_Big_Barlow_2in_1.jpg?v=1777515017"},{"product_id":"tele-vue-3x-barlow-1-25-inch","title":"Tele Vue 3x Barlow - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMagnification Factor: 3x\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 1.25\"\u003c\/li\u003e\n\u003cli\u003eOptical Design: 3-element, apochromatic\u003c\/li\u003e\n\u003cli\u003eCoatings: Fully multi-coated\u003c\/li\u003e\n\u003cli\u003eCompression Ring: Yes, brass\u003c\/li\u003e\n\u003cli\u003eFilter Threads: Yes, 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\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\u003eTriple Your Magnification, Not Your Eyepiece Collection\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 3x Barlow - 1.25\" is a compact, high-performance image amplifier that triples the power of any 1.25\" eyepiece in your collection. Designed with a sophisticated 3-element optical system, it delivers sharp, high-contrast views that preserve the original quality of your favorite eyepieces, making it an essential tool for serious lunar, planetary, and double-star observers.\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\u003eApochromatic 3-Element Optical Design\u003c\/h3\u003e\n\u003cp\u003eUnlike a standard Barlow that uses a simple two-element design, the Tele Vue 3x Barlow employs a three-element, apochromatic layout. This additional lens corrects for chromatic aberration and other optical errors introduced by the magnification process itself. The result is a view with significantly reduced false color, enabling you to see the true hues of Jupiter's cloud bands and the subtle color differences in binary star pairs.\u003c\/p\u003e\n\u003cp\u003eThis design also maintains the eye relief and exit pupil characteristics of your eyepiece better than simpler designs. When you insert a 25mm Plössl, it performs like a high-power 8.3mm eyepiece, but you retain the comfortable eye relief of the 25mm. This is a critical advantage for observers who wear glasses or prefer the comfort of longer focal length eyepieces during high-magnification sessions.\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 for Maximum Contrast\u003c\/h3\u003e\n\u003cp\u003eEvery air-to-glass surface in the 3x Barlow is multi-coated with Tele Vue's proprietary anti-reflection coatings. This meticulous process ensures that more than 99% of the incoming light passes through to your eye, preventing internal reflections that can wash out faint details. The practical effect is a darker background sky and a higher-contrast image, allowing you to pick out faint crater-floor details on the Moon or the delicate crepe ring of Saturn against the planet's glare.\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\u003eParfocal for Seamless Power Changes\u003c\/h3\u003e\n\u003cp\u003eThe Tele Vue 3x Barlow is engineered to be approximately parfocal with Tele Vue eyepieces. This means that when you insert the Barlow and eyepiece combination into your focuser, the image will remain nearly in focus. This thoughtful design minimizes the need for large focus adjustments, saving valuable time in the field and allowing you to switch between low and high power quickly without losing your 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\u003eSecure, Non-Marring Brass Clamp Ring\u003c\/h3\u003e\n\u003cp\u003eTo protect your eyepiece investment, the Tele Vue 3x Barlow uses a brass compression ring instead of a simple set screw. When you tighten the lock screw, the soft brass ring gently and evenly squeezes the eyepiece barrel. This provides a more secure, centered grip that preserves perfect optical alignment and prevents the deep scratches and gouges that set screws inflict on your equipment.\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 1.25\" Filter Threads\u003c\/h3\u003e\n\u003cp\u003eThe bottom of the Barlow's barrel is threaded to accept standard 1.25\" astronomical filters. This allows you to add a Moon filter, a color planetary filter, or a light pollution filter to the Barlow itself. Any eyepiece you then insert will benefit from the filtration, saving you the hassle of threading and unthreading filters from individual eyepieces as you change magnifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSaturn's Division, Sharpened and Defined\u003c\/h3\u003e\n\u003cp\u003eThe true test of a high-power accessory is how it performs on a challenging target when seeing conditions are favorable. With a quality 12mm eyepiece in a 4-inch refractor, providing 75x magnification, slide the 3x Barlow into the diagonal. The power jumps to 225x, and as your eye settles, the Cassini Division in Saturn's rings transforms from a thin, hazy line into a sharp, black gap. The Barlow's control of scattered light makes the separation distinct, a direct result of the multi-coated, 3-element optics at work.\u003c\/p\u003e\n\u003cp\u003eOne trade-off of this high magnification is a dimmer image and a greater sensitivity to atmospheric turbulence. On nights of poor seeing, the 3x amplification may be too much, and a 2x Barlow might provide a more stable view. This makes the 3x Barlow a specialist for nights when the atmosphere cooperates, rewarding your patience with moments of genuine resolution.\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 Magnification: Tele Vue Barlows and Powermates\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers several magnification options. Understanding where the 3x Barlow fits in helps in making the right choice for your observing style.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 2x Barlow:\u003c\/strong\u003e The 2x Barlow is a versatile workhorse, ideal for general-purpose use and a good match for most telescopes. The 3x Barlow is a more specialized tool, designed for when you need a significant jump in power for planetary observation or splitting tight double stars, and when seeing conditions permit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 2.5x Powermate:\u003c\/strong\u003e The Powermate is a 4-element design that is more complex and specifically designed to be telecentric, meaning it keeps the light rays parallel. This is a critical feature for imaging and for use with hydrogen-alpha solar filters. For purely visual use, the 3x Barlow offers more magnification in a lighter, more affordable package, while the Powermate provides a higher degree of optical correction for imagers.\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\"\u003eWhen should I use a 3x Barlow instead of a 2x?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUse the 3x Barlow when observing bright targets like the Moon and planets on nights of good atmospheric seeing. It provides the high magnifications needed to resolve fine details that a 2x Barlow might not reach with your existing eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 3x Barlow work with my non-Tele Vue eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Tele Vue 3x Barlow is compatible with any standard 1.25\" eyepiece. Its high-quality optics are designed to amplify the image without introducing significant aberrations, preserving the performance of your eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a 3x Barlow too much power for my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA general rule is to not exceed 50x to 60x per inch of aperture. If you have a 4\" (100mm) telescope, your practical limit is around 200-240x. The 3x Barlow may push past this limit with shorter focal length eyepieces, so it's best used with mid-to-low power eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between a Barlow and a Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA Barlow is a diverging lens that increases focal length. A Powermate is a 4-element telecentric amplifier that corrects for aberrations while magnifying. For visual use, both are excellent, but Powermates are superior for imaging as they do not change the exit pupil position of the eyepiece.\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 Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the barrel of the Tele Vue 3x Barlow is threaded to accept standard 1.25\" filters. This allows you to attach a filter to the Barlow and have its effect applied to any eyepiece you insert.\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\u003eBLW-3125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e3x\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\u003e3-element, Apochromatic\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e6.4 oz (181 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e3.4\" (86 mm)\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\u003eSecuring Mechanism\u003c\/td\u003e\n\u003ctd\u003eBrass Compression 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 3x Barlow - 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_3x_Barlow_1.25-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":51223880204573,"sku":"TV-BLW-3125","price":214.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_3x_Barlow_1.25in_1.jpg?v=1777515018"},{"product_id":"tele-vue-90-degree-enhanced-aluminum-diagonal-1-25-inch","title":"Tele Vue 90º Enhanced Aluminum Diagonal - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDiagonal Type: 90° Mirror (Star)\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 1.25\"\u003c\/li\u003e\n\u003cli\u003eReflectivity: 96%\u003c\/li\u003e\n\u003cli\u003eEyepiece Holder: Brass Clamp Ring\u003c\/li\u003e\n\u003cli\u003eFilter Threads: Yes (1.25\")\u003c\/li\u003e\n\u003cli\u003eWeight: 5 oz (142 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\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\u003eA Foundation of Clarity: The Tele Vue 90º Enhanced Aluminum Diagonal\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 90º Enhanced Aluminum Diagonal - 1.25\" is a foundational optical component designed to deliver bright, sharp, and color-neutral images from your refractor or Schmidt-Cassegrain telescope. It serves as the critical link between your telescope and eyepiece, providing a comfortable viewing angle without degrading the light path. For the observer who values accuracy and reliability, this diagonal is built to be a workhorse that consistently performs.\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\u003eEnhanced Aluminum Mirror Coatings for Bright Views\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this diagonal is a mirror with Tele Vue's enhanced aluminum coatings. This multi-layer coating system achieves 96% reflectivity across the visual spectrum, ensuring that the maximum amount of light from your telescope reaches your eye. The direct visual benefit is a brighter image, which is especially important when observing faint deep-sky objects or fine planetary detail at high magnification.\u003c\/p\u003e\n\u003cp\u003eUnlike some mirror coatings that can introduce a slight color cast, Tele Vue's enhanced aluminum is formulated for color neutrality. This means the double stars, planetary bands, and subtle nebular hues you see are true to life. It renders a clean, honest image, allowing the optical quality of your telescope and eyepiece to define the 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\u003eRobust and Precise Diagonal Housing\u003c\/h3\u003e\n\u003cp\u003eThe diagonal's body is machined from solid aluminum to maintain precise alignment of the internal mirror. This rigidity prevents flexure, which can lead to image shift or astigmatism, especially when using heavier eyepieces or barlows. The 90-degree angle provides a comfortable viewing position for any object more than a few degrees above the horizon, reducing neck strain during long observing sessions.\u003c\/p\u003e\n\u003cp\u003eThis diagonal is not a dielectric, which represents a specific design trade-off. While dielectrics offer slightly higher reflectivity and surface durability, this enhanced aluminum model provides its high performance at a more accessible price point and lighter weight. For visual use, the 2-3% difference in light transmission is often imperceptible, making this a practical choice for many observers.\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 Eyepiece Clamp\u003c\/h3\u003e\n\u003cp\u003eTele Vue has engineered this diagonal with a non-marring brass clamp ring to hold your 1.25\" eyepieces. Unlike simple set screws that can scratch and dent your eyepiece barrels, this mechanism provides a uniform grip around the circumference of the barrel. The result is a more secure connection that preserves the finish of your valuable eyepieces and ensures perfect alignment with the optical axis every time.\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-Boosting Internal Baffling\u003c\/h3\u003e\n\u003cp\u003eTo maximize image contrast, the interior of the diagonal is fully blackened and threaded with anti-reflection baffles. These features are designed to trap any stray light that enters the diagonal, preventing it from reflecting off internal surfaces and washing out the image. This attention to detail becomes apparent when observing bright objects like the Moon or Jupiter, where it helps preserve fine, low-contrast details against a dark background.\u003c\/p\u003e\n\u003cp\u003eImagine using this diagonal with a quality 80mm refractor to view the cloud belts of Jupiter. The 96% reflectivity ensures the planet and its moons appear bright and crisp. As you push the magnification, the internal baffling keeps the background space black, making it easier to spot the subtle festoons and barges within the Jovian atmosphere that a less-optimized diagonal might obscure.\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 Diagonal\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers several 1.25\" diagonals, and the choice depends on your priorities. The 90º Enhanced Aluminum model is the standard for high-quality visual observing where brightness and color fidelity are key.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue Everbrite Dielectric Diagonal (DPC-1250):\u003c\/strong\u003e The Everbrite diagonal offers 99% reflectivity and a more durable, easier-to-clean mirror coating. It is the choice for observers who want the absolute maximum light transmission and longevity. However, the Enhanced Aluminum diagonal provides nearly identical visual performance for a lower investment, making it an excellent value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 60º Everbrite Diagonal (DPC-6012):\u003c\/strong\u003e The 60º diagonal is designed for specific applications where the telescope is mounted very low, such as on a Tele-Pod mount for seated observing. For general use on most equatorial or alt-az mounts, the 90º orientation of the Enhanced Aluminum model is more comfortable.\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 mirror diagonal better than a prism diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor refractors slower than f\/7 and for all Schmidt-Cassegrains, a high-quality mirror diagonal like this one is generally preferred as it introduces no chromatic aberration. Prism diagonals can sometimes introduce a small amount of color error in fast refractors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is this \"Enhanced Aluminum\" diagonal different from a standard aluminum one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eStandard aluminum coatings typically have around 88% reflectivity. Tele Vue's enhanced aluminum uses a multi-layer dielectric overcoat that boosts reflectivity to 96%, resulting in noticeably brighter images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this diagonal work with my Schmidt-Cassegrain telescope (SCT)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this diagonal is an excellent upgrade for the stock diagonals included with many SCTs. You will need a standard SCT-to-1.25\" visual back to attach it to the rear cell of your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy choose this over the Tele Vue Everbrite dielectric model?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Enhanced Aluminum diagonal offers superb optical performance that is visually very close to the Everbrite for a lower cost. It's a high-value option for observers who want Tele Vue quality without needing the absolute highest reflectivity or coating durability of a dielectric.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I clean the mirror on my diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMirror diagonal coatings are delicate. Only clean the mirror when necessary using a gentle puffer bulb to remove dust. If further cleaning is needed, use a dedicated optical cleaning solution and microfiber cloths with a careful, no-pressure technique.\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\u003eDSC-0125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003e90-degree Mirror Diagonal\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\u003eMirror Coating\u003c\/td\u003e\n\u003ctd\u003eEnhanced Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003e96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003eNon-marring brass clamp 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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5 oz (142 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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 90º Enhanced Aluminum Diagonal\" src=\"\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTele Vue 90º Enhanced Aluminum Diagonal - 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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 1.25-inch Dust Cap (top)\" src=\"\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Cap\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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 1.25-inch Dust Cap (bottom)\" src=\"\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBarrel 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_Diagonal_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":51223880597789,"sku":"TV-DSC-0125","price":302.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_90deg_Enhanced_Aluminum_Diagonal_1.25in_1.jpg?v=1777747262"},{"product_id":"tele-vue-90-degree-everbrite-diagonal-1-25-inch","title":"Tele Vue 90º Everbrite Diagonal - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReflectivity: 99% Dielectric Coating\u003c\/li\u003e\n\u003cli\u003eSubstrate Material: Pyrex\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 1.25\"\u003c\/li\u003e\n\u003cli\u003eOptical Angle: 90°\u003c\/li\u003e\n\u003cli\u003eEyepiece Holder: Non-marring Brass Clamp Ring\u003c\/li\u003e\n\u003cli\u003eFilter Threads: Yes (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\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\u003eThe Final Stop for Light: The Tele Vue 90º Everbrite Diagonal\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 90º Everbrite Diagonal - 1.25\" is an essential optical component engineered to transmit the maximum amount of light from your telescope to your eyepiece without compromise. For observers who have invested in high-quality optics, this diagonal ensures that the final reflection in the optical path maintains the brightness, contrast, and resolution your telescope is capable of delivering. It is the definitive upgrade over standard aluminum or silver diagonals, offering a quantifiable improvement in image quality and a lifetime of consistent performance.\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 Everbrite Dielectric Coating Advantage\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Everbrite is a mirror with a sophisticated dielectric coating. Unlike aluminum coatings that tarnish and lose reflectivity over time, the Everbrite's 50-layer coating provides 99% reflectivity across the visible spectrum and is impervious to aging. This translates directly to a brighter image at the eyepiece, allowing you to detect fainter stars and more subtle details in nebulae and galaxies.\u003c\/p\u003e\n\u003cp\u003eThe coating's durability means you can clean the mirror without fear of scratching or degrading its performance. This ensures your view will be just as bright and crisp in a decade as it is on the first night. The result is a consistent, high-fidelity image that honors the light-gathering power of your 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\u003eThermally Stable Pyrex Mirror Substrate\u003c\/h3\u003e\n\u003cp\u003eA mirror's coating is only as good as the surface it is deposited on. Tele Vue uses a low-expansion Pyrex substrate for the Everbrite mirror, which is ground and polished to a 1\/10th wave flatness. The key benefit of Pyrex is its thermal stability; it does not change shape as temperatures drop during an observing session.\u003c\/p\u003e\n\u003cp\u003eThis stability prevents the introduction of optical errors like astigmatism, which can soften fine planetary detail. When you are pushing the magnification on Jupiter's cloud belts or trying to split a tight double star, the Everbrite's thermal integrity ensures the image remains sharp and free of distortion caused by cooling 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 Foundation of Mechanical Precision\u003c\/h3\u003e\n\u003cp\u003eThe Everbrite's body is machined from a single, solid block of aluminum. This unibody construction guarantees that the mirror is permanently aligned with the eyepiece and telescope barrels, eliminating concerns about collimation drift. The rigid structure ensures your eyepieces are held perfectly on-axis, which is critical for maintaining sharpness, especially in faster focal ratio 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\u003eProtecting Your Eyepiece Investment\u003c\/h3\u003e\n\u003cp\u003eStandard diagonals use a simple set screw that digs into the eyepiece barrel, causing scratches and potential alignment issues. The Tele Vue Everbrite diagonal features a non-marring brass clamp ring. When you tighten the lock screw, this soft metal ring gently and evenly compresses around the eyepiece barrel, securing it firmly without leaving a mark and ensuring perfect centering 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\u003eMaximizing Contrast with Stray Light Control\u003c\/h3\u003e\n\u003cp\u003eImage contrast is just as important as brightness. The interior of the Everbrite diagonal is machined with fine anti-reflection threads and blackened to a matte finish. This design traps any stray light that enters the diagonal, preventing it from reflecting off internal surfaces and washing out the image. The practical effect is a darker background sky, which makes faint objects stand out more clearly against the blackness 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\u003eDesigned for Secure, Real-World Use\u003c\/h3\u003e\n\u003cp\u003eThe 1.25\" barrel that inserts into your telescope's focuser is tapered with a safety groove. This small but critical feature prevents the diagonal from accidentally slipping out of the focuser if the lock screw becomes loose. The barrel is also threaded to accept standard 1.25\" filters, allowing you to easily add a moon filter or nebula filter to your observing chain without having to attach it to every individual 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\u003eThe Everbrite in Practice: Observing the Orion Nebula\u003c\/h3\u003e\n\u003cp\u003eThe benefit of 99% reflectivity becomes immediately apparent on a target like the Trapezium region within the Orion Nebula (M42). With a standard aluminum diagonal, the faint, wispy outer loops of the nebula can be lost in the noise. Through the Everbrite, these structures appear with more definition. The four primary stars of the Trapezium are rendered as sharp, distinct points of light, and with good seeing, the fainter E and F stars become more accessible due to the improved brightness and contrast.\u003c\/p\u003e\n\u003cp\u003eWhile a premium diagonal cannot increase your telescope's aperture, it ensures that every photon collected by your main optic reaches your eye. This is the Everbrite's primary function: to be a transparent link in the optical chain. Its limitation is simply that it cannot correct for poor seeing or a poorly collimated telescope, but it will reveal the true performance ceiling of your instrument.\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\"\u003eIs the Everbrite diagonal worth the cost over a standard diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf you use premium eyepieces and observe faint deep-sky objects or fine planetary detail, yes. The 99% dielectric coating provides a noticeably brighter and higher-contrast image compared to standard aluminum diagonals, which typically offer 88-92% reflectivity and degrade over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this diagonal work with my Schmidt-Cassegrain telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Tele Vue 90º Everbrite Diagonal will work perfectly with any telescope that has a standard 1.25\" visual back or focuser, including Schmidt-Cassegrains, refractors, and Maksutov-Cassegrains.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between a mirror diagonal and a prism diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMirror diagonals, like the Everbrite, tend to have higher light transmission and introduce no chromatic aberration, making them ideal for all-around and high-magnification use. Prism diagonals can sometimes offer slightly better contrast but may introduce a small amount of color error in very fast (sub f\/5) telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I clean the mirror on the Everbrite diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dielectric coating is very durable. Use a bulb blower to remove loose dust first. For fingerprints or residue, use a high-quality optical cleaning fluid and microfiber cloth, applying gentle, circular motions. The coating is as tough as the glass itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Everbrite diagonal correct an upside-down image?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it provides a right-side-up but mirror-reversed (left-to-right) image, which is standard for astronomical diagonals. For a fully corrected image for terrestrial viewing, you would need an erecting prism diagonal.\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\u003eDPC-1250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eMirror Star Diagonal\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\u003eMirror Substrate\u003c\/td\u003e\n\u003ctd\u003ePyrex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Flatness\u003c\/td\u003e\n\u003ctd\u003e1\/10 wave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEverbrite Dielectric (99% reflectivity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003eBrass Clamp Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eMachined Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Compatibility\u003c\/td\u003e\n\u003ctd\u003eAccepts 1.25\" filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.2 oz (204 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 90º Everbrite 1.25\" Diagonal\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\"\u003eDust Cap\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\"\u003eBarrel 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_Diagonal_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":51223880663325,"sku":"TV-DPC-1250","price":455.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_90deg_Everbrite_Diagonal_1.25in_1.jpg?v=1777515019"},{"product_id":"tele-vue-60-degree-everbrite-diagonal-1-25-inch","title":"Tele Vue 60º Everbrite Diagonal - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReflectivity: 99% Everbrite Dielectric Coatings\u003c\/li\u003e\n\u003cli\u003eViewing Angle: 60°\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 1.25\"\u003c\/li\u003e\n\u003cli\u003eConstruction: Machined Aluminum Housing\u003c\/li\u003e\n\u003cli\u003eEyepiece Holder: Non-Marring Brass Clamp Ring\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\u003eA More Comfortable Angle for Refractor Observing\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 60° Everbrite Diagonal is a specialized 1.25\" star diagonal engineered for observers who find the standard 90° angle awkward, particularly when using refractors on alt-azimuth mounts. By combining a more natural viewing posture with benchmark-setting 99% dielectric coatings, this diagonal delivers both ergonomic comfort and maximum light throughput. It is a direct solution for specific observational challenges where comfort translates directly into seeing more 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\u003eThe Everbrite Dielectric Mirror Advantage\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this diagonal is Tele Vue's Everbrite dielectric mirror. This is not a standard aluminum coating. It is an exotic, 10-layer coating system that achieves a certified 99% reflectivity across the entire visual spectrum. The practical effect is a visibly brighter image with more accurate color rendition compared to conventional diagonals, which typically offer 88-95% reflectivity. Faint nebula details and subtle planetary hues are transmitted to your eyepiece with minimal loss.\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\u003eWhy a 60° Diagonal Viewing Angle?\u003c\/h3\u003e\n\u003cp\u003eWhile a 90° diagonal is standard, it can create an uncomfortable viewing position when observing objects near the zenith with a refractor on an alt-azimuth mount, forcing you to crouch or kneel. The 60° angle of the Tele Vue Everbrite provides a more direct, head-on viewing posture in these situations. This ergonomic improvement reduces neck strain during long sessions, allowing you to concentrate on the object rather than your own discomfort. This is the diagonal you reach for when your Dobsonian-mounted friends are observing in comfort, and you want to do the same with your 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\u003ePrecision Machined Housing for Permanent Alignment\u003c\/h3\u003e\n\u003cp\u003eThe diagonal's body is machined from a solid block of aluminum, ensuring the mirror is permanently fixed in perfect alignment. This robust construction means you can trust the collimation is held securely, night after night, without the risk of shifts that can soften images in less durable designs. The one-piece body provides a rigid, dependable foundation for the high-performance optics it contains.\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\u003eStray Light Control for Higher Contrast\u003c\/h3\u003e\n\u003cp\u003eImage contrast is just as important as brightness. Tele Vue machines anti-reflection threads and internal baffles into the diagonal's interior surfaces. These features are designed to trap and absorb any off-axis stray light that enters the barrel. This prevents unfocused light from reaching the eyepiece, resulting in a darker background sky and making faint objects stand out more clearly against the blackness 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\u003eSecure, Non-Marring Brass Clamp Ring\u003c\/h3\u003e\n\u003cp\u003eTo protect your investment in high-quality eyepieces, the diagonal uses a brass clamp ring instead of a simple setscrew. When you tighten the lock screw, the soft brass ring compresses gently and evenly around your eyepiece barrel. This provides a secure, centered grip that will not scratch or gouge the barrel, preserving the finish and value of your eyepiece collection.\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 Trade-Off for Specific Applications\u003c\/h3\u003e\n\u003cp\u003eThe primary limitation of a 60° diagonal is its specialization. For observers using German equatorial mounts or for viewing objects at lower altitudes, the traditional 90° angle often remains more comfortable. The 60° design is not a universal replacement but a targeted upgrade for a specific use case: making zenith-observing with a refractor on an alt-az mount a more pleasant and sustainable experience. When pointed at Jupiter riding high overhead with a Tele Vue DeLite eyepiece, the difference is immediate; your posture is relaxed, your eye is steady, and you can hold the image for longer, allowing the subtle banding in the planet's atmosphere to resolve from the seeing.\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 is a 60° diagonal better than a 90° diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 60° diagonal is most beneficial when using a refractor on an alt-azimuth mount to view objects high in the sky, near the zenith. It provides a more comfortable, straight-on viewing angle that reduces neck strain compared to the steeper angle of a 90° diagonal in that specific orientation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Tele Vue Everbrite diagonal work with my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this 1.25\" diagonal will work with any Schmidt-Cassegrain Telescope that has a 1.25\" visual back. However, the ergonomic benefits of the 60° angle are less pronounced on an SCT, where the eyepiece position is already higher and more accessible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a dielectric diagonal really better than an aluminum one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Everbrite's 99% dielectric coating is more reflective, more durable, and has a flatter spectral response than enhanced aluminum coatings, which typically reflect 95-97%. This translates to slightly brighter images and more accurate color, and the coating will not degrade over time from exposure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this diagonal have filter threads?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 1.25\" barrel is threaded to accept standard 1.25\" astronomy filters, allowing you to easily add a moon filter, light pollution filter, or color filters to your observing setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 60° Everbrite compare to the 90° Everbrite?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOptically, they are identical, both featuring the same 99% reflective Everbrite coatings and build quality. The only difference is the viewing angle. Choose the 90° for general use, especially on equatorial mounts, and the 60° specifically to improve comfort with refractors on alt-az mounts.\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\u003eDPC-6012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eMirror Diagonal (Star Diagonal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e60°\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\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eEverbrite 99% Dielectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003eBrass Clamp Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes (Standard 1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eMachined Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.2 oz (204 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 60º Everbrite Diagonal - 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_Diagonal_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":51223880728861,"sku":"TV-DPC-6012","price":517.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_60deg_Everbrite_Diagonal_1.25in_1.jpg?v=1777515019"},{"product_id":"tele-vue-90-degree-everbrite-diagonal-2-inch","title":"Tele Vue 90º Everbrite Diagonal - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReflectivity: 99% Dielectric Coatings\u003c\/li\u003e\n\u003cli\u003eMirror Substrate: Pyrex\u003c\/li\u003e\n\u003cli\u003eBody Construction: CNC-Machined Aluminum\u003c\/li\u003e\n\u003cli\u003eEyepiece Holder: Non-Marring Brass Clamp Ring\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 2-inch with 1.25-inch adapter\u003c\/li\u003e\n\u003cli\u003eFilter Threads: Yes (48mm)\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\u003eThe Last Diagonal You'll Ever Need: The Tele Vue 90º Everbrite Diagonal\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue 90º Everbrite Diagonal is an essential optical component engineered to transmit the maximum amount of light from your telescope to your eyepiece without degrading the image. For observers who refuse to compromise on brightness, contrast, or mechanical integrity, this 2-inch star diagonal serves as a permanent, reference-grade link in the optical chain, ensuring the view your telescope produces is exactly the view your eye receives.\u003c\/p\u003e\n\u003cp\u003eUnlike standard aluminum or silver diagonals that can tarnish and lose reflectivity over time, the Everbrite is built for a lifetime of service. It combines a thermally stable Pyrex mirror with a state-of-the-art dielectric coating system, all housed in a solid, single-piece body that guarantees perfect alignment. This isn't just an accessory; it's an investment in the performance of your entire telescope 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\u003e99% Reflectivity Dielectric Coatings\u003c\/h3\u003e\n\u003cp\u003eThe heart of the Everbrite is its mirror, which features a 50-layer dielectric coating system. This advanced coating provides a certified reflectivity of 99% across the entire visual spectrum. The practical benefit is a visibly brighter image with more vibrant color saturation compared to diagonals using standard aluminum coatings, which typically reflect only 88-92% of light.\u003c\/p\u003e\n\u003cp\u003eThis increase in light throughput is most noticeable on faint deep-sky objects. The wispy outer arms of the Triangulum Galaxy (M33) or the faint mottling within the Orion Nebula (M42) gain a subtle but definite boost in contrast and visibility. The coatings are also exceptionally durable, resisting the gradual oxidation that degrades traditional mirror surfaces over years of 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 Everbrite Protective Over-Coating\u003c\/h3\u003e\n\u003cp\u003eTo ensure the dielectric layers last a lifetime, Tele Vue applies a proprietary hard over-coating. This Everbrite layer acts as a shield, protecting the delicate underlying coatings from airborne pollutants, moisture, and the physical contact of cleaning. This is the diagonal's key limitation and strength: while it can be cleaned if necessary, the Everbrite process is so robust that the mirror should almost never require it, preserving its optical quality indefinitely.\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\u003eThermally Stable Pyrex Substrate\u003c\/h3\u003e\n\u003cp\u003eA mirror's coating is only as good as the surface it's on. The Everbrite uses a low-expansion Pyrex substrate, which is far more resistant to temperature changes than the plate glass found in budget diagonals. As your telescope cools to ambient temperature during an observing session, the Pyrex mirror maintains its precise 1\/10-wave optical figure, preventing the introduction of astigmatism or other aberrations that can soften the 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\u003eSolid, Single-Piece CNC-Machined Housing\u003c\/h3\u003e\n\u003cp\u003eMany diagonals are assembled from multiple screwed-together parts, creating potential points of flexure or misalignment. The Everbrite body is machined from a single block of solid aluminum to ensure permanent, perfect alignment between the telescope's optical axis and the eyepiece. This rigid, unyielding structure means that even heavy eyepieces or binoviewers will not cause the diagonal to sag or shift, preserving the sharp collimation 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\u003eNon-Marring Brass Clamp Ring\u003c\/h3\u003e\n\u003cp\u003eProtecting your eyepiece investment is critical. Instead of a simple set screw that digs into the barrel, the Everbrite uses a soft brass clamp ring. As you tighten the oversized screw, this internal ring compresses gently and evenly around the eyepiece barrel. This mechanism provides a more secure grip across a wider surface area and completely avoids the scratches and gouges that set screws inflict.\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-Enhancing Baffling\u003c\/h3\u003e\n\u003cp\u003eTo deliver the highest possible contrast, a diagonal must control stray light. The interior of the Everbrite is machined with anti-reflection threads and finished in a flat black. This baffling system traps any off-axis light that enters the diagonal, preventing it from reflecting into the eyepiece. The result is a darker background sky, which makes it easier to perceive faint details, like the delicate Cassini Division in Saturn's rings or the faint stars at the core of globular cluster M13.\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 Diagonal\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers several high-performance diagonals, and the choice depends on your telescope and observing goals. The Everbrite is the definitive choice for refractors and Schmidt-Cassegrains where light-gathering and long-term durability are paramount.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 1.25\" Everbrite (DPC-1250):\u003c\/strong\u003e The 2-inch Everbrite is the logical upgrade for telescopes with 2-inch focusers. It allows the use of wide-field 2-inch eyepieces and provides a more robust, stable platform. The 1.25-inch model is an excellent choice for smaller telescopes or when weight is a primary concern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Tele Vue SCT Diagonal (ACC-0003):\u003c\/strong\u003e While the Everbrite can be used with an SCT, the dedicated SCT diagonal is designed to thread directly onto the rear cell. This creates a shorter, more rigid light path, which can be advantageous for imaging or using heavy accessory trains. However, the standard Everbrite offers more versatility for use with different telescope types.\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 dielectric diagonal better than a prism diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor most applications, yes. A high-quality dielectric mirror diagonal like the Everbrite offers higher light transmission and better color accuracy than most prisms. Prisms can sometimes offer slightly higher contrast, but they can also introduce chromatic aberration in short focal ratio telescopes (below f\/7).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Tele Vue Everbrite work with my Schmidt-Cassegrain Telescope (SCT)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 2-inch Everbrite slides into any standard 2-inch visual back or focuser on an SCT. For a more direct, rigid connection, Tele Vue also offers a specific SCT diagonal that threads onto the rear cell, but the Everbrite offers greater versatility across different telescope types.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the Everbrite more expensive than other dielectric diagonals?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe cost reflects the combination of a 1\/10-wave Pyrex mirror, the durable Everbrite over-coating, and the precision CNC-machined single-piece housing. These elements together ensure thermal stability, perfect alignment, and a lifetime of consistent performance that cheaper, multi-part diagonals cannot guarantee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a 2-inch diagonal if I only have 1.25-inch eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eEven if you only use 1.25-inch eyepieces now, a 2-inch diagonal is a future-proof investment. It allows you to upgrade to wide-field 2-inch eyepieces later without needing to buy another diagonal. The included 1.25-inch adapter is high quality and maintains perfect centering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow often should I clean the Everbrite mirror?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAlmost never. The Everbrite's protective over-coating is extremely durable and the diagonal should be kept capped when not in use. Cleaning should only be considered after years of use if significant dust has accumulated that cannot be removed with an air bulb.\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\u003eDDP-8004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eMirror Diagonal (Star Diagonal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAngle\u003c\/td\u003e\n\u003ctd\u003e90-degree\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter\u003c\/td\u003e\n\u003ctd\u003e2-inch to 1.25-inch (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror\u003c\/td\u003e\n\u003ctd\u003e1\/10 wave Pyrex substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003e50-layer dielectric with Everbrite over-coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003e99% across visual spectrum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Clamp\u003c\/td\u003e\n\u003ctd\u003eBrass clamp ring (non-marring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eOne-piece CNC machined aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes, for standard 2-inch (48mm) filters\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 90º Everbrite 2-inch Diagonal\" src=\"[Image%20URL]\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTele Vue 90º Everbrite 2-inch Diagonal\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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 2-inch to 1.25-inch Adapter\" src=\"[Image%20URL]\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" to 1.25\" Adapter with Brass Clamp Ring\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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 2-inch Dust Cap\" src=\"[Image%20URL]\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" Barrel 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\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 2-inch Eyepiece Dust Cap\" src=\"[Image%20URL]\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" Eyepiece Port 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_Diagonal_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":51223880761629,"sku":"TV-DDP-8004","price":630.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_90deg_Everbrite_Diagonal_2in_1.jpg?v=1777515019"},{"product_id":"tele-vue-2-inch-sct-richfield-kit","title":"Tele Vue 2\" SCT RichField Kit","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSCT Adapter (ACC-0003): threads onto a standard SCT rear cell\u003c\/li\u003e\n\u003cli\u003e2\" 90° Everbrite Diagonal (DDP-8004), 99% dielectric mirror\u003c\/li\u003e\n\u003cli\u003e2\"-1.25\" HiHat adapter included with the diagonal\u003c\/li\u003e\n\u003cli\u003eOpens the SCT to 2\" wide-field eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\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\u003eTele Vue 2\" SCT RichField Kit\u003c\/h2\u003e\n\u003cp\u003eThe kit lets a Schmidt-Cassegrain use 2\" eyepieces and accessories. The SCT Adapter threads onto the standard Celestron C8-style rear cell, and the 2\" 90° Everbrite diagonal clamps into it.\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\u003e2\" Everbrite Diagonal\u003c\/h3\u003e\n\u003cp\u003eThe Everbrite's dielectric coating is 99% reflective across the visual spectrum, on a 1\/10-wave Pyrex mirror. The diagonal body is machined from a solid aluminum block, with a brass clamp ring and 48mm filter threads.\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\u003eUsing 1.25\" Eyepieces\u003c\/h3\u003e\n\u003cp\u003eA 2\"-1.25\" HiHat adapter comes with the diagonal. Where fork swing-through clearance is tight, Tele Vue suggests the Flat Top 2\"-1.25\" adapter, which turns a 1.25\" eyepiece into a low-profile 2\" one.\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\u003eEyepieces Not Included\u003c\/h3\u003e\n\u003cp\u003eThe kit contains no eyepiece. Add a 2\" low-power eyepiece to get the widest true field your SCT can show.\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 in the kit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SCT Adapter (ACC-0003) and the 2\" 90° Everbrite diagonal (DDP-8004) with its 2\"-1.25\" HiHat adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes it include an eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Choose a 2\" low-power eyepiece to go with it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill it fit my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SCT Adapter threads onto the standard Celestron C8-style rear cell used by most SCTs.\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\u003eKit\u003c\/td\u003e\n\u003ctd\u003eSCP-8202\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSCT Adapter\u003c\/td\u003e\n\u003ctd\u003eACC-0003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagonal\u003c\/td\u003e\n\u003ctd\u003e2\" 90° Everbrite (DDP-8004), 99% dielectric, 1\/10-wave Pyrex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads (Diagonal)\u003c\/td\u003e\n\u003ctd\u003e48mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.25\" Adapter\u003c\/td\u003e\n\u003ctd\u003e2\"-1.25\" HiHat, included with the diagonal\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 (ACC-0003)\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\"\u003eTele Vue 2\" 90° Everbrite Diagonal (DDP-8004)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\"-1.25\" HiHat 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\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":51223880827165,"sku":"TV-SCP-8202","price":655.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_2in_SCT_RichField_Kit_1.jpg?v=1777515017"},{"product_id":"tele-vue-fonemate-smart-phone-adapter","title":"Tele Vue FoneMate Smart Phone Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCompatibility: Fits any smartphone with or without a case\u003c\/li\u003e\n\u003cli\u003eEyepiece Fit: Designed for Tele Vue eyepieces with rubber grip rings (most 1.25\" Plössl, Delos, Panoptic, Nagler, and DeLite models)\u003c\/li\u003e\n\u003cli\u003eConstruction: Machined aluminum and durable polymer\u003c\/li\u003e\n\u003cli\u003eAlignment: Simple, intuitive camera-to-eyepiece alignment\u003c\/li\u003e\n\u003cli\u003eUse Case: Afocal imaging of bright objects (Moon, planets, Sun with proper solar filter)\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\u003eCapture the Cosmos with Your Phone: The Tele Vue FoneMate Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue FoneMate Smart Phone Adapter is a precision-engineered tool that connects your smartphone to your Tele Vue eyepiece, turning your telescope into an instrument for instant astrophotography. It eliminates the frustration of hand-holding a phone by providing a secure, perfectly aligned connection. This allows you to capture sharp, centered images of the Moon, planets, and other bright celestial objects with the camera you use every day.\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 Grip for Your Tele Vue Eyepiece\u003c\/h3\u003e\n\u003cp\u003eUnlike universal adapters that use generic clamps, the FoneMate is designed to integrate seamlessly with the Tele Vue ecosystem. The adapter's clamp is specifically shaped to grip the rubber housing on most Tele Vue eyepieces, including the majority of Delos, DeLite, Plössl, Panoptic, and Nagler models. This purpose-built design ensures a non-slip, mar-free connection that is both secure and perfectly centered over the eyepiece lens.\u003c\/p\u003e\n\u003cp\u003eThe result is a stable imaging platform that prevents camera movement and maintains alignment as you track objects across the sky. This secure fit is the foundation for capturing crisp lunar crater details or the rings of Saturn without the blur and vignetting common with less stable adapters. It allows you to focus on the image, not on whether your phone is about to slip.\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 Phone Cradle for Any Device\u003c\/h3\u003e\n\u003cp\u003eThe FoneMate's phone cradle features adjustable arms that can accommodate virtually any smartphone, with or without a protective case. The mechanism provides a firm, gentle grip on your device, ensuring it remains stationary throughout your imaging session. This versatility means you can easily switch between different phones or upgrade your device without needing a new adapter.\u003c\/p\u003e\n\u003cp\u003eThis simple, effective design means less time spent on setup and more time observing and imaging. The ability to keep your phone in its case is a significant practical advantage, protecting your device from accidental drops in the dark and streamlining the process of getting your first shot.\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\u003eEffortless Camera and Eyepiece Alignment\u003c\/h3\u003e\n\u003cp\u003eAchieving perfect alignment between your phone's camera and the eyepiece is the most critical step in afocal imaging. The FoneMate simplifies this process with its intuitive layout. You simply place your phone in the cradle and adjust its position until the eyepiece's exit pupil appears centered on your screen, then lock it down.\u003c\/p\u003e\n\u003cp\u003eThis ease of alignment is what separates a frustrating experience from a rewarding one. It lets you quickly capture spontaneous events, like a moonrise or a conjunction of planets, without wrestling with complicated hardware. For outreach or sharing the view with family, it allows anyone to grab a memorable snapshot of what's in 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\u003eExperience: Your First Lunar Close-Up\u003c\/h3\u003e\n\u003cp\u003eImagine centering the Moon in your 13mm DeLite eyepiece. The view is sharp, with craters along the terminator casting deep shadows. You attach the FoneMate to the eyepiece, place your phone in the cradle, and in seconds, that same view fills your screen. A simple tap-to-focus on the crater Copernicus brings its terraced walls into sharp relief.\u003c\/p\u003e\n\u003cp\u003eYou snap a picture, and the image is exactly what you saw, perfectly framed and clear. This is the FoneMate's core function: it transforms a fleeting visual memory into a shareable digital image. It excels at capturing bright objects where the details matter, making it the ideal tool for documenting your lunar and planetary observations.\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 Best Use Cases\u003c\/h3\u003e\n\u003cp\u003eThe FoneMate is an exceptional tool for what it is designed for: afocal imaging of bright targets. Its primary limitation is that it is not intended for deep-sky astrophotography of faint nebulae or galaxies, which require long exposures and dedicated astronomy cameras. Furthermore, its design is optimized for Tele Vue eyepieces and may not provide a secure fit on eyepieces from other brands or those without a suitable grip surface.\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 Comparison of Imaging Methods\u003c\/h3\u003e\n\u003cp\u003eFor observers new to imaging, the FoneMate occupies a critical space between two common approaches.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Hand-Holding a Phone:\u003c\/strong\u003e Hand-holding is difficult, produces blurry and poorly-framed shots, and is deeply frustrating. The FoneMate provides the stability and alignment that hand-holding lacks, resulting in a dramatic and immediate improvement in image quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Dedicated Astro-Camera:\u003c\/strong\u003e A dedicated camera offers superior control and sensitivity for serious deep-sky imaging but comes with a steep learning curve, requiring a laptop, software, and complex workflows. The FoneMate provides a simple, instant imaging solution using the powerful camera already in your pocket, making it the perfect first step into astrophotography.\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\"\u003eWill the FoneMate fit my specific smartphone model?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The FoneMate's adjustable cradle is designed to hold virtually any smartphone, including larger models like the iPhone Pro Max and Samsung Galaxy Ultra series, with or without a standard case.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Tele Vue eyepieces work best with the FoneMate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe FoneMate is designed to clamp onto the rubber grip of most 1.25\" Tele Vue eyepieces. This includes DeLite, Delos, Plössl, Panoptic, and Nagler models. Eyepieces with longer eye relief, like those in the DeLite and Delos series, tend to be the easiest to align and use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the FoneMate for galaxies or nebulae?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the FoneMate is intended for afocal imaging of bright objects like the Moon and planets. Faint deep-sky objects require long-exposure capabilities found in dedicated astrophotography cameras, not smartphone sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I avoid a black circle (vignetting) around my picture?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA dark vignette is usually caused by misalignment or having the phone's camera too far from the eyepiece lens. Ensure the camera is perfectly centered, then use your phone's digital zoom (typically 1.5x to 2x) to expand the image to fill the frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the FoneMate better than cheaper universal smartphone adapters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile universal adapters exist, the FoneMate is engineered specifically for the dimensions and grip surfaces of Tele Vue eyepieces. This results in a much more secure, stable, and accurately centered connection, which is critical for sharp imaging.\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\u003eSFA-0001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eMachined Aluminum and Polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhone Compatibility\u003c\/td\u003e\n\u003ctd\u003eUniversal, fits most smartphones with or without cases\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Compatibility\u003c\/td\u003e\n\u003ctd\u003eDesigned for Tele Vue eyepieces with rubber grip rings. Fits DIOPTRX-compatible eyepieces.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 6 oz (170 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 FoneMate Smart Phone 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_FoneMate_Smart_Phone_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":51223880859933,"sku":"TV-SFA-0001","price":182.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_FoneMate_Smart_Phone_Adapter_1.jpg?v=1777515023"}],"url":"https:\/\/davidastro.com\/collections\/televue-visual-accessories.oembed","provider":"David Astro","version":"1.0","type":"link"}