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Search results with tag "The celestial sphere"
DETERMINATION OF LOOK ANGLES TO GEOSTATIONARY ...
www.ngs.noaa.govThe problem of pointing toward a celestial object, as opposed to a geostationary communication satellite, is complicated by the earth's ro- tation. The apparent position of the object on the celestial sphere constantly changes with time and, among others, effects of precession, nutation, and polar motion must be taken into consideration. ...
The Celestial Sphere, Angles, and Positions
www.physics.uwyo.eduThe Celestial Sphere Earth at center of very large sphere Because sphere is so large, observer, is also at center (figure not to scale). Stars in fixed positions