Pulkovo Observatory
Deutsch was born in the night from December 31, 1900, to January 1, 1901, in the Bessarabian town of Reni in a family of German (on the father's side), Greek and Romanian (on the mother's side) descent. When he was a small child, the family moved to Ryazan and then to Saratov. He was graduated from the Sankt Petersburg University (Russia). He was an adjoint director of the Pulkovo Observatory prior World War II and the director of the Pulkovo Observatory during the blockade of Leningrad. Subsequently, he was the head of the astrometry section of the Pulkovo Observatory and the founder of the astrometric school of that observatory.