How is chromatic aberration corrected in large astronomical reflecting telescopes?
A) a combination of lenses designed to cancel the aberrations
B) use a parabolic mirror instead of a spherical mirror
C) a reflecting telescope has no chromatic aberration
D) change the resolution of the telescope

Question

Quizplus · Accepted Answer

Reflecting telescopes, which use mirrors instead of lenses to focus light, inherently do not suffer from chromatic aberration. This is because mirrors reflect all wavelengths of light equally, unlike lenses, which refract different wavelengths by different amounts, leading to chromatic aberration.

How Is Chromatic Aberration Corrected in Large Astronomical Reflecting Telescopes