André-Louis Danjon
French astronomer
André-Louis Danjon was a French astronomer born in Caen to Louis Dominique Danjon and Marie Justine Binet.
Danjon devised a method to measure "earthshine" on the Moon using a telescope in which a prism split the Moon's image into two identical... Wikipedia
Born: April 6, 1890, Caen, France
Died: April 21, 1967 (age 77 years), Suresnes, France