telescope, traditionally, a system of lenses, mirrors, or both, used to gather light from a distant object and form an image of it. Traditional optical telescopes, which are the subject of this article, also are used to magnify objects on earth and in astronomy; other types of astronomical telescopes gather radio waves (see radio astronomy), X rays (see X-ray astronomy), or infrared or ultraviolet radiation.
Sections in this article:
- Images Produced by Optical Telescopes
- Arrangement of Mirrors in a Reflector
- Types of Optical Telescopes
- The Schmidt Telescope and Other Innovations
- Resolving and Magnifying Power
- Mounting the Telescope
- Evolution of Telescopes
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
See more Encyclopedia articles on: Astronomy: General