Heber Doust Curtis

Heber Doust Curtis (* June 27, 1872 in Muskegon, Michigan, † January 9, 1942 in Ann Arbor, Michigan ) was an American astronomer.

He was professor of astronomy and director of several observatories, most recently in 1930 the astronomical observatories of the University of Michigan.

Curtis took one of the first convincing evidence for the extragalactic position of the spiral nebulae and discussed this with Harlow Shapley in the famous " great debate ". He created several catalogs of nebulae and galaxies.

He made 11 solar eclipse expeditions.

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