Turn Left at Orion Book is the ideal guidebook for beginning astronomers. It gives all the information you need to find the planets, and nearly a hundred deep sky objects visible in the Northern hemisphere, with plenty of maps and large format drawings that accurately depict what you'll see through your telescope. No previous knowledge of astronomy is needed, and since descriptions are non-technical, skywatchers of all ages and backgrounds can enjoy and learn from this book. Updated charts cover planetary positions until the year 2011. 224 pages, hardbound. By Guy Consolmagno and Dan. M. Davis.