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Observing Variable Stars, Novae and Supernovae
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This complete practical guide and resource package instructs amateur astronomers in observing and monitoring variable stars and other objects of variable brightness.
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This complete practical guide and resource package instructs amateur astronomers in observing and monitoring variable stars and other objects of variable brightness.
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"This complete practical guide and resource package instructs amateur astronomers in observing and monitoring variable stars and other objects of variable brightness."
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