Real Astronomy with Small Telescopes
Step-by-Step Activities for Discovery
Häftad, Engelska, 2006
Del i serien Patrick Moore Practical Astronomy Series
296 kr
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Beskrivning
Despite their limits in types of observation, 80-mm refractors and 90-mm Maksutovs have sufficient aperture and magnifying power to provide a lifetimeofobservingpleasure.Theyareidealforlunaroccultationmeasurements, tracking the solar activity cycle, observing variable stars and measuring binary ix x Preface stars.