Annals of the Deep Sky Volume 3 New, Free SHip

No other popular work in astronomy provides the comprehensive historical background and astrophysical appraisals of prominent stars and celestial objects. In Cancer we explore the open clusters M44 and M67, as well as the colliding galaxy NGC 2623 (Arp 243).

Uranometria 2000.0 Atlas – Deep Sky Field Guide By Cragin/Bonnano

Take galaxies for example. A galaxy might be quite large but you could have difficulty in locating it if its surface brightness is really dim. What is the opacity of that dark nebula?. Serious observers know that the more they know about an object the better their observing experience.

Night Sky Observer’s Guide Volume 4: The Glories of the Milky Way to –54°

The Night Sky Observer’s Guide was to close the gap between observing literature and modern optics. While it may be a challenge to detect most of the dark and bright nebulae from your backyard, practically all of the 977 clusters can be seen, and when you venture to a truly dark site, you will be prepared with this book.