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Chapter 2

2A-2

QuestionAnswer
Who was the first astronomer to build a telescope for viewing the heavens? Galileo Galilei
What does the word refract mean? Bend
What are the three functions of a telescope? Light gathering, resolution, magnifying
What does a refractor telescope use to accomplish these three functions? Objective lens gathers light, magnifies with eyepiece, good lens quality improves resolution
What is the color distortion caused by lenses called? Chromatic aberration
Give two ways to reduce this color Concave lens, thinner objective lens distortion.
Created by: 1588794465
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