Why do telescopes have to have a good motorized drive system to move them quickly and smoothly?
A) because the Earth is rotating, with the telescope attached to it
B) because astronomers typically have to look at many objects in the sky in a few minutes
C) because all objects in the sky vary in brightness very quickly
D) because the telescope can then be moved out from under the clouds to where it is clear
E) You can't fool me, telescopes never move; they stay in one position all night

Question

Quizplus · Accepted Answer

Telescopes need a good motorized drive system to compensate for the Earth's rotation, which causes celestial objects to appear to move across the sky. A smooth and precise drive system allows astronomers to track objects accurately and for longer periods of time without having to adjust the telescope manually.

Why Do Telescopes Have to Have a Good Motorized Drive