Celestial Coordinate

Celestial Coordinate - Celestial Coordinate System It is useful to impose on the celestial sphere a coordinate system that is analogous to the

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Celestial Coordinate System It is useful to impose on the celestial sphere a coordinate system that is analogous to the latitude-longitude system employed for the surface of the Earth. For a more extensive discussion, see Astronomy without a Telescope . Right Ascension and Declination This coordinate system is illustrated in the following figure (for which you should imagine the earth to be a point at the center of the sphere). The celestial coordinate system In the celestial coordinate system the North and South Celestial Poles are determined by projecting the rotation axis of the Earth to intersect the celestial sphere, which in turn defines a Celestial Equator. The celestial equivalent of latitude is called declination and is measured in degrees North (positive numbers) or South (negative numbers) of the Celestial Equator. The celestial equivalent of longitude is called right ascension . Right ascension can be measured in degrees,
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This note was uploaded on 12/04/2011 for the course ANT ANT2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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Celestial Coordinate - Celestial Coordinate System It is useful to impose on the celestial sphere a coordinate system that is analogous to the

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