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Questions for Review



1

What is meant by the term light-gathering power? How does it affect the ability to see faint objects?
2

What is resolution of a telescope? What physical process limits it?
3

How is resolution affected by the size of a telescope’s mirror or lens?
4

What is the difference between a reflecting and a refracting telescope?
5

What are some reasons for using mirrors rather than lenses in telescopes?
6

What is the purpose of an interferometer?
7

Why do astronomers put X-ray observatories in space rather than just on a high mountain?
8

What is meant by adaptive optics?





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