Alvan Clark

Alvan Clark (March 8, 1804 – August 19, 1887), born in Ashfield, Massachusetts, was an American astronomer and telescope maker. Using glass blanks made by Mantois of Paris his firm, Alvan Clark & Sons, ground lenses for refracting telescopes, including the largest refracting telescope in the world, the 40-inch at Yerkes Observatory, and the second largest, the 36-inch telescope at Lick Observatory. One of Clark's sons, Alvan Graham Clark, discovered the dim companion of Sirius. His other son was George Bassett Clark; both sons were partners in the firm.

Related Topics:
March 8 - 1804 - August 19 - 1887 - Ashfield, Massachusetts - American - Astronomer - Telescope - Mantois - Refracting telescope - Yerkes Observatory - Lick Observatory - Alvan Graham Clark - Sirius - George Bassett Clark

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Craters on the Moon and on Mars are named in his honor.

Related Topics:
Craters - Moon - Mars

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