Struve
FRIEDRICH GEORG WIL- HELM, a German astronomer; born in Altona, Holstein, April 15, 1793. His whole life was devoted to astronomy in the service of the Russian Government; from 1813 to 1820 observer and Professor Extraordinary of Astronomy in the University of Dorpat; from 1820 to 1838 Professor of Astronomy and director of the same observatory; and from 1839 to 1864 director of the new Imperial Observatory at Pulkova, near Petrograd. His great work in astronomy was the observation and publication of the great Dorpat catalogue of double-stars, generally known as the "Mensuræ Micrometricæ," and denoted by the letter Σ and the "Positiones Mediæ," or results of the meridian observations of the same stars, this catalogue being generally denoted by the letters > [PM].
These catalogues have served as the model for all similar work since. The rest of his life was given to the foundation and organization of the great observatory at Pulkova. He died Nov. 23,