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The Observer's Guide to Astronomy: Volume 1
pocket,
1994,
Engelska,
ISBN 9780521379458
How can you find new minor planets, comets and novae? How can you use photoelectric detectors to derive the temperatures of stars? And how can you predict future eclipses and …
The Observer's Guide to Astronomy: Volume 2
pocket,
1994,
Engelska,
ISBN 9780521458986
How can you find new minor planets, comets and novae? How can you use photoelectric detectors to derive the temperatures of stars? And how can you predict future eclipses and …