1.25-in Atmospheric Dispersion Corrector ADC
ZWO 1.25-in ADC is used to reduce the effect of aberration on lunar and planetary images. Unlike atmospheric turbulence, the smearing effect can be eliminated from captured imagery. Professional astronomers use a device called an ADC in the optical path of their telescopes to cancel the spectral image spread. An ADC generally consists of a pair of prisms that introduces a spectral image smear that is equal in magnitude, but opposite in direction to that produced by the atmosphere.
The best place for an ADC is between a Barlow lens and the camera or eyepiece. In this space very little extra image aberrations will be introduced to the optical system. In order to avoid optical aberrations produced by the ADC, the optical system should be slower than f/15. This can be easily accomplished with a Barlow lens.
Material: H-K9L(Schott BK7)
Surface Accuracy: λ/[email protected]
Deviation Angle: 2°