Which of these types of telescopes is MOST seriously affected by chromatic aberration?
A) radio telescope
B) refracting telescope
C) Newtonian telescope
D) Cassegrain telescope

Question

Quizplus · Accepted Answer

Chromatic aberration is a type of distortion in which there is a failure of a lens to focus all colors to the same convergence point. It occurs because lenses have a different refractive index for different wavelengths of light. Refracting telescopes, which use lenses to gather and focus light, are most affected by this phenomenon. Reflecting telescopes, such as Newtonian and Cassegrain telescopes, use mirrors instead of lenses and are not subject to chromatic aberration. Radio telescopes, which collect radio waves, also do not suffer from this issue.

Which of These Types of Telescopes Is MOST Seriously Affected