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SV199 1.25'' ADC Atmospheric Dispersion Corrector

SKU: W9157B
-23% US$ 122.99
List Price: US$ 159.99
  • The main function of ADC is to reduce the color change caused by atmospheric dispersion and improve the imaging effect of planets; especially low-altitude planets
  • A pair of prism lenses adopts double-sided coating process to reduce light loss; coating adopts anti-reflective broad-band; applicable range from 300nm to 700nm
  • Camera and eyepiece side 1.25 inches barrel with T2 male thread; adaption is simple through T2 thread and 1.25 inches barrel on camera side and 1.25 inches barrel on telescope side
  • Through the use of 2 quality minimum 1/4λ BK7 prisms; it corrects the false colour introduced by the earth´s atmosphere;double wedge prism with 4.5 degree declination adjustment range
  • The ADC corrects the dispersion effects of earth´s atmosphere; you will get sharper images of planets and moon; when used for planetary imaging; it changes the clarity of the image dramatically; particularly in the luminance channel when LRGB imaging
  • Ring scale for adjusting dispersion correction; less fringing; clearer planet photos and more details; the eyepiece or camera installation interface adopts coaxial locking interface ensures sufficient coaxiality
  • FMC prism lens; prism lenses employ a double-sided coating process to reduce light loss make sure the light transmission of the ADC is high

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Great addition for planetary

The ADC is very simple to use, just adjust the prism dials until the color fringing is gone. Where I'm at the planets are always low on the horizon, so this is perfect for fixing the atmospheric dispersion that I have to deal with.
Model  SV199
Surface Accuracy 1/4λ
Camera/eyepiece side 1.25" barrel + T2 male
Telescope side 1.25" barrel
Optical aperture 24mm 
Prism BK7
Lateral surface Blackened for improved contrast
Coatings Anti-Reflective Brad-Band (300nm-700nm)
Deviation Angle 4.5 degree
Required back-focus  56.57nm
Net Weight 167g

  • The atmospheric dispersion corrector is born to increase the clarity of the planetary image by correcting the effects of dispersion of the earth’s atmosphere.
    The 2 high-quality 1/4λBK7 prisms with the fully-multi coated on each side act a pear performance in reducing the chromatic aberration. 
    The bubble level of the ADC is accurate to level the horizontal.
    A Barlow or planetary camera is permitted thanks to the 1.25” interface on two sides of the tube.

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