Image: Ra and dec on celestial sphere
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Original image (990 × 1,000 pixels, file size: 506 KB, MIME type: image/png)
Description: Diagram of a star's right ascension and declination as seen from outside the celestial sphere. Depicted are the star, the Earth, lines of RA and dec, the vernal equinox, the ecliptic, the celestial equator, and the celestial poles.
Title: Ra and dec on celestial sphere
Credit: Own work
Author: Tfr000 (talk) 15:34, 15 June 2012 (UTC)
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes
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