SL-326 – Celestial Coordinates Featured Image
A full projection of 3000 stars are displayed here against a background of the celestial coordinates, the ecliptic and the galactic equator. Right ascension is marked in 1 hour intervals, declination at 10° intervals, with precessional axis plus or minus 13,000 year increments. Extremely useful for angular measurement, location of faint celestial objects and spherical geometry. Applications: Physics, telescope use, positional astronomy, celestial navigation and precession at the junior high through college level.