Alvan Graham Clark
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| Alvan Graham Clark | |
 Alvan Clark and his assistant Carl Ludin (right) alongside of the 40-inch lens, 1896.
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| Born | July 10, 1832 Fall River, Massachusetts |
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| Died | June 9, 1897 (aged 64) |
| Nationality | American |
| Fields | Astronomy |
| Known for | Sirius B |
Alvan Graham Clark (July 10, 1832 – June 9, 1897), born in Fall River, Massachusetts, was an American astronomer and telescope-maker. He was the son of Alvan Clark. In 1862, while testing Northwestern University's Dearborn Telescope in Evanston, Illinois, which was a new 18-inch refracting telescope, he discovered Sirius B, the magnitude 8 companion of Sirius and the first known white dwarf.
[edit] See also
[edit] References
- "Alvan Clark, Astronomy, Biographies". AllRefer.com.
| Persondata | |
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| NAME | Clark, Alvan Graham |
| ALTERNATIVE NAMES | |
| SHORT DESCRIPTION | American astronomer |
| DATE OF BIRTH | July 10, 1832 |
| PLACE OF BIRTH | Fall River, Massachusetts |
| DATE OF DEATH | June 9, 1897 |
| PLACE OF DEATH | |
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