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ISBN: 978-1942675099
The software package is a fairly complete photoelectric photometry data reduction system
a beginner using Harvard Pennington's methods should be able to locate and identify 25 to 30 Messier objects at any time of year before midnight
Uranometria 2000
Position angles of first and last contact
Annals of the Deep Sky Volume 3 Charts ISBN: 978-1942675099By Jeff Kanipe and Dennis Webb Product information: Softbound, 6 by 9 inches, 355 pages, first published 2016, black & white. Annals of the Deep Sky is a comprehensive reference that guides amateur and semipro astronomers into every mind boggling corner of the observational universe. Each volume presents extensive descriptions of prominent stars and deep sky objects. No other popular work in astronomy provides the comprehensive historical background
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