The Deep Sky: An Introduction (Sky & Telescope Observer's Guides)

Here is the perfect reference for anyone who owns a telescope or a pair of binoculars, but doesn't know what to look for amid the constellations. It explains how to find double and multiple stars, variable stars, open and globular clusters, nebulae, and galaxies -- and what you'll see when you do. Includes 36 full-page sky charts; equipment, books, and software suggestions; sketches of how deep-sky objects look through a small telescope; and more than 100 black-and-white photographs.