The Deep Sky Observer's Companion is an excellent starting point for beginners, or a comprehensive refresher resource for more experienced stargazers.

The companion covers a wide variety of topics, including:

• an introduction to observing
• observing equipment (like telescopes and binoculars)
• planning your observing time
• the art of visual observing
• star catalogues
• and much more

Deep Sky Observer's Companion (PDF; 641 Kb)

Read the Deep Sky Observer's Companion online

With thanks to Auke Slotegraaf: www.psychohistorian.org