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How does a modern telescope work?
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There are two types of telescope. A refractor uses a lens to form an image. A reflector uses a curved mirror. Most modern telescopes used in astronomy are reflectors. The telescope is finely balanced and turns slowly to keep the image steady as the Earth moves. A Schmidt telescope is used to photograph large areas of the sky.
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Previous:
Back
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Book:
Best Ever Q&A
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Section:
Space
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Chapter:
Exploring the Heavens
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