The Amateur Astronomer's Guide to the Deep-Sky Catalogs - OverDrive
https://www.overdrive.com/media/3507014/the-amateur-astronomers-guide-to-the-deep-sky-catalogs
WEBOct 27, 2011 · The Amateur Astronomer's Guide to the Deep-sky Catalogs is a single compilation of the historical and modern astronomical deep-sky catalogs. It discusses their origins, compares what's in them, explains how to interpret the data they contain, and even outlines how readers can create suitable 'custom' catalogs for their own use.
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