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SVBONY SV199 ADC Atmospheric Dispersion Corrector - 1.25"

by SVBONY
SKU SV-W9157B
Original price CA$111.00 - Original price CA$111.00
Original price
CA$111.00
CA$111.00 - CA$111.00
Current price CA$111.00
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  • Corrects atmospheric dispersion for planetary viewing
  • 2° to 2.5° prism deviation angle
  • 24mm clear optical aperture
  • Fits standard 1.25" focusers and accessories
  • Integrated T2 male and female threads for imaging
  • Onboard bubble level for precise horizontal alignment
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty
  • Svbony SV199 1.25" ADC Atmospheric Dispersion Corrector

    The 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.

    Correcting Atmospheric Dispersion with a 2.5° Deviation Angle

    When 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.

    1λ Surface Accuracy and Onboard Bubble Level for Precision Alignment

    To 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.

    Flexible Integration via 1.25" Barrel and T2 Threads

    The 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.

  • What does the Svbony SV199 ADC actually do?

    The 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.

    How will the Svbony SV199 improve my view of Jupiter when it's low in the sky?

    Without 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.

    Can I use the Svbony SV199 ADC for imaging Saturn with my planetary camera?

    Yes, the SV199 is ideal for planetary imaging. It features standard T2 threads (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.

    Is the Svbony SV199 difficult to use?

    It's straightforward for both beginners and experienced observers. First, use the integrated bubble level 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.

    Will the Svbony SV199 work with my telescope?

    The SV199 is designed to fit any telescope with a standard 1.25" focuser 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.

    How much does the Svbony SV199 weigh?

    The SV199 ADC weighs 405g. 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.

  • Brand SVBONY
    Model SV199
    Product Type Atmospheric Dispersion Corrector
    Optical Aperture 24mm
    Prism Type Pair of Wedge Prisms
    Prism Material Bk7
    Deviation Angle 2° - 2.5°
    Surface Accuracy
    Coatings Double-sided Anti-Reflection (300-700nm)
    Telescope Connection 1.25" Barrel / T2 Male Thread
    Eyepiece/Camera Connection 1.25" Holder / T2 Female Thread
    Locking Method Side Locking Screws
    Leveling Integrated Bubble Level
    Body Material CNC Machined Metal
    Dimensions 30mm x 48mm
    Weight 405g
    Color Black
    • SV199 1.25" ADC Body

      × 1

    • Dust Cover

      × 2

  • Svbony 1-Year Warranty