Galactic and Solar System Optical Astrometry

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Astrometry - the study of the positions of astronomical objects and how they move across the sky - is a cornerstone of modern astronomy. Pinning down the distan

Deep-Sky Companions: Hidden Treasures

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Stephen O'Meara's new and exciting observing guide spotlights an original selection of 109 deep-sky objects that will appeal to sky-watchers worldwide. His 'hid

Zones +20 to -0

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Dynamics, Ephemerides and Astrometry of the Solar System

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IAU Symposium 172 Dynamics, Ephemerides and Astrometry of the Solar System was held in Paris in July, 1995. 250 scientists from 33 countries attended the sympos

Zones +80 to +30

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