"Deep-Sky Companions: The Caldwell Objects is a beautifully written, personal guide for observing 109 of the most beautiful objects in the night sky, plus twenty more personally chosen deep-sky treasures. Coupled with O'Meara's own meticulous observations, the rich observational history and current scientific knowledge of each object bring this book to life, and the depth of O'Meara's writing makes it a real gem."
David H. Levy, co-discoverer of Comet Shoemaker-Levy 9
Review of the first edition:
"Stephen James O'Meara's Deep-Sky Companions: The Caldwell Objects is an indispensable guide for anyone who observes the night sky with a quality amateur telescope from a reasonably dark place. Here are tips for viewing - and understanding - more than one hundred entrancing galaxies, star clusters and nebulae available to the backyard enthusiast. With its wealth of scientific and historical information, and its poetic sensibility, the book gave me immense pleasure even before I left my easy chair."
Chet Raymo, author of 365 Starry Nights and An Intimate Look at the Night Sky