* Astronomy

Alvan Clark (March 8, 1804 - August 19, 1887), born in Ashfield, Massachusetts, the descendant of a Cape Cod whaling family of English ancestry, was an American astronomer and telescope maker. He was a portrait painter and engraver (ca.1830s-1850s), and at the age of 40 became involved in telescope making.
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Touring Lowell Observatory - the Alvan Clark 24 inch refracting telescope

Credit SK2010April