Mike Inglis, "A Field Guide to Deep-Sky Objects"
English | 2012 | ISBN: 146141265X | 278 pages | PDF | 1,7 MB
This star guide enables amateur astronomers to focus on a class of object, and using an observation list that begins with the easiest object, find and move progressively over a period of months to more difficult targets. Includes detailed descriptive summaries of each class of object.