A major advantage of a Newtonian reflector over a refractor is:
A)its compact size.
B)the elimination of chromatic aberration.
C)there are only two lenses to grind.
D)the central hole in the mirror is smaller.
E)the elimination of the secondary mirror.

Question

Quizplus · Accepted Answer

The major advantage of a Newtonian reflector over a refractor is the elimination of chromatic aberration. Refractors suffer from chromatic aberration due to the different wavelengths of light refracting at different angles through the glass lenses, while reflectors use mirrors to reflect light and therefore do not have this issue. Refractors suffer from chromatic aberration, which can cause color distortion in the image. Newtonian reflectors, on the other hand, use mirrors instead of lenses and do not have this issue.

A Major Advantage of a Newtonian Reflector Over a Refractor