Celestron Sky Map #93722 is the ideal teaching guide for learning the night sky. You wouldn't set off on a road trip without a road map, and you don't need to try to navigate the night sky without a map either. Even if you already know your way around the major constellations, Celestron Sky Map can help you locate all kinds of fascinating objects, brought to you by celestron. The front cover has a specially designed luminous planisphere that rotates to simulate the seasonal progression of celestial objects through the sky. When the planisphere is pre-exposed to light, star positions glow brightly against a dark background, mimicking actual constellations. More than a thousand stars and deep-sky objects are listed and charted. The illustrated reference section provides basic information and the visual characteristics of various types of stars, nebulae and galaxies. To use, hold the celestron sky map above your head with the arrow facing celestial north. Turn the dial to the present date and time, and the sky map shows you exactly whats above you. Turn the dial as the hour changes to keep up with the orbiting sky show. Please feel free to check out the extensive collection of celetron telescopes to go with your celestron sky map. If you have any questions about this sky map constellation book, please feel free to contact us!