The MAIN use of the Schmidt-type telescope,which uses a spherical primary mirror and a refracting "corrector plate," is for:
A) narrow field-of-view photography and photometry.
B) single-star spectroscopy.
C) wide-angle photography for sky surveys.
D) radio astronomy.

Question

Quizplus · Accepted Answer

The Schmidt-type telescope is designed for wide-angle photography for sky surveys. Its corrector plate helps to correct the spherical aberration of the primary mirror, resulting in a wide, flat image plane. This makes it well-suited for mapping and surveying large areas of the sky.

The MAIN Use of the Schmidt-Type Telescope,which Uses a Spherical