{"product_id":"svbony-sv199-adc-atmospheric-dispersion-corrector-125in","title":"SVBONY SV199 ADC Atmospheric Dispersion Corrector - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects atmospheric dispersion for planetary viewing\u003c\/li\u003e\n\u003cli\u003e2° to 2.5° prism deviation angle\u003c\/li\u003e\n\u003cli\u003e24mm clear optical aperture\u003c\/li\u003e\n\u003cli\u003eFits standard 1.25\" focusers and accessories\u003c\/li\u003e\n\u003cli\u003eIntegrated T2 male and female threads for imaging\u003c\/li\u003e\n\u003cli\u003eOnboard bubble level for precise horizontal alignment\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\u003eSvbony SV199 1.25\" ADC Atmospheric Dispersion Corrector\u003c\/h2\u003e\n\u003cp\u003eThe Svbony SV199 1.25\" ADC (Atmospheric Dispersion Corrector) uses a pair of counter-rotating wedge prisms made from Bk7 glass to introduce a corrective deviation angle of 2° to 2.5°, cancelling color fringing on planets low on the horizon. Its 24mm effective aperture ensures no vignetting with standard 1.25\" eyepieces, while the CNC-machined body measures 30x48mm and adds a solid 405g to your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCorrecting Atmospheric Dispersion with a 2.5° Deviation Angle\u003c\/h3\u003e\n\u003cp\u003eWhen a planet is low in the sky, Earth's atmosphere acts like a weak prism, splitting its light and creating a red\/blue fringe that blurs fine detail. The SV199 ADC's two wedge prisms introduce an opposing dispersion, adjustable from 2° to 2.5°, to recombine the colors into a single, sharp image. The Bk7 optical elements feature double-sided anti-reflection coatings optimized for the 300-700nm visual spectrum, preserving contrast and brightness.\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\u003e1λ Surface Accuracy and Onboard Bubble Level for Precision Alignment\u003c\/h3\u003e\n\u003cp\u003eTo function correctly, an ADC must be precisely leveled with the horizon. The SV199 integrates a bubble level directly into the main body, removing the guesswork and ensuring accurate alignment every time. The optical prisms are polished to a surface accuracy of 1λ, and the entire assembly is housed in a CNC-machined body for rigidity and precise control via the smooth plastic adjustment levers.\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\u003eFlexible Integration via 1.25\" Barrel and T2 Threads\u003c\/h3\u003e\n\u003cp\u003eThe SV199 is designed for universal compatibility in planetary setups. The telescope side features a standard 1.25\" barrel with a T2 male thread, allowing it to slide into any 1.25\" focuser or be securely threaded to your diagonal or barlow. The eyepiece end includes a 1.25\" holder with side-locking screws for visual use and a T2 female thread for direct, secure attachment to most planetary cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the Svbony SV199 ADC actually do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Svbony SV199 corrects for atmospheric dispersion, an effect where Earth's atmosphere splits a celestial object's light into a spectrum, causing color fringing (typically red on one edge, blue on the other). This is most noticeable when planets are low on the horizon. The ADC's prisms recombine these colors, resulting in a sharper, more detailed, and color-accurate image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Svbony SV199 improve my view of Jupiter when it's low in the sky?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWithout an ADC, Jupiter will show a soft red fringe on its upper limb and a blue fringe on its lower limb when near the horizon, blurring features like the Great Red Spot and fine cloud bands. By inserting and adjusting the SV199, you can cancel this fringing. The result is a much tighter image with higher contrast, allowing you to resolve details that were previously smeared by atmospheric effects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Svbony SV199 ADC for imaging Saturn with my planetary camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the SV199 is ideal for planetary imaging. It features standard \u003cstrong\u003eT2 threads\u003c\/strong\u003e (female on the camera side) for a secure, threaded connection directly to your camera's nosepiece, eliminating any potential for tilt. This ensures the sharpest possible data capture, which is critical for lucky imaging techniques used on planets like Saturn to resolve the Cassini Division or subtle storm details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Svbony SV199 difficult to use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt's straightforward for both beginners and experienced observers. First, use the integrated \u003cstrong\u003ebubble level\u003c\/strong\u003e to ensure the adjustment levers are perfectly horizontal. Then, while looking through the eyepiece or at your camera feed, move the two levers together in opposite directions until the color fringing on the planet disappears. That's it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Svbony SV199 work with my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SV199 is designed to fit any telescope with a standard \u003cstrong\u003e1.25\" focuser\u003c\/strong\u003e or diagonal. It also has T2 threads for more secure connections. Its primary limitation is back focus, as it adds some length to the optical path, which is rarely an issue for Schmidt-Cassegrain or Maksutov-Cassegrain telescopes but should be checked on some refractors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much does the Svbony SV199 weigh?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SV199 ADC weighs \u003cstrong\u003e405g\u003c\/strong\u003e. While robust, this adds significant weight to the end of your optical train. You should ensure your focuser can handle this load without slipping, especially when combined with a heavy eyepiece or planetary camera.\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSVBONY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSV199\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAtmospheric Dispersion Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Aperture\u003c\/td\u003e\n\u003ctd\u003e24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Type\u003c\/td\u003e\n\u003ctd\u003ePair of Wedge Prisms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Material\u003c\/td\u003e\n\u003ctd\u003eBk7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviation Angle\u003c\/td\u003e\n\u003ctd\u003e2° - 2.5°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Accuracy\u003c\/td\u003e\n\u003ctd\u003e1λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eDouble-sided Anti-Reflection (300-700nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Barrel \/ T2 Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece\/Camera Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Holder \/ T2 Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking Method\u003c\/td\u003e\n\u003ctd\u003eSide Locking Screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeveling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Bubble Level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eCNC Machined Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e30mm x 48mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e405g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\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\"\u003eSV199 1.25\" ADC Body\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 Cover\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSvbony 1-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861236740381,"sku":"SV-W9157B","price":111.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV199-1-25-ADC-Atmospheric-Dispersion-Corrector-for-Planets-1_cea229c1-a97c-469f-88d9-43e81ec7d8ab.jpg?v=1788660240","url":"https:\/\/davidastro.com\/products\/svbony-sv199-adc-atmospheric-dispersion-corrector-125in","provider":"David Astro","version":"1.0","type":"link"}