автор: Jean Kovalevsky

…

Astrometry is the domain of astronomy devoted to the determination of po- sitions and their time-variations, and by extension, the apparent dimensions and shapes of celestial bodies. Although several …

On the occasion ofthe second edition ofthe book, it appeared necessary to up- date information that was already seven years old. Astrometry has recorded tremendous advances during these last years, …

This book on reference systems is the first comprehensive review of the problem of celestial and terrestrial reference systems and frames. Over 20 years, the importance of this problem emerged slowly …

…