What is the reason for the fact that a reflecting telescope used at prime focus does not suffer from chromatic aberration?
A) The aluminum coating on the mirror absorbs light from all wavelengths except the one of interest to the astronomer, and this light is focused perfectly.
B) The light has passed through only one lens.
C) All wavelengths of light are reflected by the same amount, regardless of color.
D) The lens is so perfectly formed that all colors of light travel through the lens along the same path.

Question

Quizplus · Accepted Answer

Reflecting telescopes use mirrors to gather and focus light. Since mirrors reflect light rather than refract it through different media, all wavelengths of light are reflected equally. This means that unlike lenses, which can cause different colors of light to focus at different points due to their varying wavelengths (chromatic aberration), mirrors do not introduce this issue, leading to a uniform focus for all colors.

What Is the Reason for the Fact That a Reflecting