The sharpest images of stars that can be formed by a single,large,ground-based,visible-light telescope are of the order of what angular size?
A) about 10-³ arc second
B) about 1°
C) about 1 arc minute
D) about 0.2 arc second

Question

Quizplus · Accepted Answer

The sharpest images of stars that can be formed by a single, large, ground-based, visible-light telescope are of the order of 0.2 arc second, which is option D. This is due to atmospheric turbulence, which blurs the images of stars seen from the ground.

The Sharpest Images of Stars That Can Be Formed by a Single,large,ground-Based,visible-Light