What Is the Purpose of the Glass Corrector Plate at the Front

question 152

Multiple Choice

What is the purpose of the glass corrector plate at the front of a Schmidt telescope?

• A) The plate reflects unwanted wavelengths away from the primary mirror.
• B) The plate corrects for spherical aberration in the primary mirror.
• C) The plate corrects for chromatic aberration in the primary mirror.
• D) The plate corrects for sagging of the primary mirror under its own weight when the telescope is turned at an angle to the vertical.

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