The Night Sky is a rotating star finder (planisphere) that allows the user to recognize the constellations for any time of night, any day of the year. The sky appears to rotate (due to the rotation and orbital motion of the earth), so to be successful recognizing the constellations a beginner needs to know which stars are above the horizon at any time.

This is the full-sized version of The Night Sky suitable for the 30°-40° latitude zone (southern half of the US, North Africa, Middle East, etc.). There are editions for the following latitude zones: 50°-60°, 40°-50°, 30°-40°, 20°-30°, and the Southern Hemisphere. There are also pocket-sized versions available for the same latitude zones.