Space exploration began with the launch of Sputnik and Astrophysics was born as the application of physics to the phenomena observed by Astronomy, which etymologically means laws of the stars.
There are 2759 entries in this glossary.| Term | Definition |
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| Field Of View |
The angular extent of the image formed by an optical instrument, such as a telescope. The field of view of a telescope becomes smaller the greater the magnification employed. Where an application requires a particularly wide field of view e.g. for comet hunting or for sky survey photography a special design of eyepiece or telescope is required.
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