André Lallemand

André Lallemand ( born September 29, 1904 in Cirey- lès- Pontailler; † 24 March 1978 in Paris) was a French astronomer. He was director of the Institut d' Astrophysique de Paris and from 1961 to 1974 professor of experimental methods of astronomy at the Collège de France.

Lallemand studied at the University of Strasbourg, where he was assistant at the observatory in 1925, then headed by Ernest Esclangon. He was also in Strasbourg at the laboratory of Pierre -Ernest Weiss and received in 1927 his Agrégation in physics. Then he was assistant to André Danjon at the Strasbourg Observatory, which replaced 1929 Esclangon as a conductor. First, he was auxiliary astronomer ( aide - astronome ), then from 1938 astronome - adjoint. During World War II he was first exiled to the University of Strasbourg to Clermont- Ferrand and 1943 he followed Danjon to the Observatory of Paris. In 1953 he was appointed there to astronomers. In 1961 he was professor at the Collège de France and followed Danjon as director of the Institute of Astrophysics in Paris.

Lallemoand is known for the development of electronic cameras with photomultipliers in astronomy. He made initial proposals in 1933 ( caméra Lallemand called ). Interrupted by the war, he took over the development in 1949 again with the first so photos taken in the 1950s.

In 1929, he was with Danjon and Rougier on a trip to observe the total solar eclipse in Indochina, the first infrared photos of the corona of the sun arose.

In 1962 he received the Eddington Medal. In 1961 he became a member of the Academie des Sciences, which are named a price for him. The lunar crater Lallemand bears his name.