It is difficult to improve the angular resolution of optical telescopes located on the surface of Earth beyond a certain limit because
A) large telescopes are reflecting telescopes, and they suffer from too much chromatic aberration.
B) spherical mirrors suffer from too much aberration.
C) star images are distorted more by air turbulence than by the telescope optics.
D) improvement would require much larger, very expensive telescopes to enhance the inherent telescope.

Question

Quizplus · Accepted Answer

Air turbulence in the Earth's atmosphere distorts the images of stars more than the optics of the telescope itself, limiting the angular resolution of ground-based optical telescopes. This phenomenon is known as atmospheric seeing.

It Is Difficult to Improve the Angular Resolution of Optical