James Melville Gilliss

James Melville Gilliss (born Sept. 6, 1811, Georgetown, Md., U.S.—died Feb. 9, 1865, Washington, D.C.) was a U.S. naval officer and astronomer who founded the Naval Observatory in Washington, D.C., the first U.S. observatory devoted entirely to research. Gilliss entered the U.S. Navy in 1827 and 10 years later was put in charge of the navy’s Depot of Charts and Instruments, in Washington, D.C. His responsibilities included making astronomical observations necessary for longitude determinations of...