This innovative – Glow-in-the-Dark – pocket reference highlights prominent constellations and stars that are visible with the naked eye north of the equator. Simply shine a light on the guide to illuminate the constellations and their names on the summer or winter star charts. Also includes descriptions of the meaning of each constellation and instructions on how to use your fingers to 'walk' between constellations to find prominent stars. Laminated for durability, this clever guide is an excellent source of portable information and ideal for field use by novices and experts alike. Over 250,000 sold.Made in the USA.