Explorations: An Introduction to Astronomy (Arny), 7th Edition

Chapter 5: Telescopes

Questions for Review

1
What is light-gathering power? How does it affect the ability to see faint objects?
2
What is the difference between a reflecting and a refracting telescope? What are some advantages of a reflecting telescope? Which type are the biggest telescopes?
3
What is resolution of a telescope? What physical process limits it?
4
How is resolution affected by the size of a telescope's mirror or lens?
5
What is the purpose of an interferometer?
6
What is a CCD and how is it better than film?
7
Why do astronomers put X-ray observatories in space rather than just on high mountains?
8
What kinds of astronomy can be done from the ground?
9
What is meant by adaptive optics?
10
How do astronomers get to use observatories?
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