Harold D. Babcock

Harold Delos Babcock (January 24, 1882 – April 8, 1968) was an American astronomer and the father of Horace W. Babcock. He was of English and German ancestry.^[1] He was born in Edgerton, Wisconsin, before completing high school in Los Angeles and was accepted to the University of California, Berkeley in 1901.^[2] He worked at the Mount Wilson Observatory from 1907 until 1948.^[1] He specialized in solar spectroscopy and precisely mapped the distribution of magnetic fields over the Sun's surface, working alongside his son.^[3] In 1953 he won the Bruce Medal.^[4] Babcock died of a heart attack in Pasadena, California at age 86.^[5]

Harold Delos Babcock
Babcock at the Fourth Conference International Union for Cooperation in Solar Research at Mount Wilson Observatory, 1910
Born	24 January 1882 Edgerton, Wisconsin
Died	8 April 1968 Pasadena, California
Nationality	American
Alma mater	University of California, Berkeley
Awards	Bruce Medal
Scientific career
Fields	Solar spectroscopy
Institutions	Mount Wilson Observatory

The crater Babcock on the Moon is named after him, as is asteroid 3167 Babcock (jointly named after him and his son).