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Observing Nebulae
e-bok,
2016,
Engelsk,
ISBN 9783319328843
This book enables anyone with suitable instruments to undertake an examination of nebulae and see or photograph them in detail. Nebulae, ethereal clouds of gas and dust, are among …
Observer's Guide to Variable Stars
e-bok,
2018,
Engelsk,
ISBN 9783030009045
This book contains everything you need to know about variable stars -- stars whose brightness varies noticeably over time. The study of variable stars has been a particularly …