Английская Википедия:Alvan Clark
Шаблон:Infobox scientist Alvan Clark (March 8, 1804 – August 19, 1887), born in Ashfield, Massachusetts, was an American astronomer and telescope maker.
Biography
He started as a portrait painter and engraver (c.1830s–1850s), and at the age of 40 became involved in telescope making. Using glass blanks made by Chance Brothers of Birmingham, England, and Feil-Mantois of Paris, France, his firm Alvan Clark & Sons ground lenses for refracting telescopes. Their lenses included the largest in the world at the time: the Шаблон:Convert at Dearborn Observatory at the Old University of Chicago (the lens originally intended for Ole Miss); also the two Шаблон:Convert telescopes at the United States Naval Observatory and McCormick Observatory, the Шаблон:Convert at Pulkovo Observatory, which was destroyed in the Siege of Leningrad (only the lens survives), the Шаблон:Convert telescope at Lick Observatory (still the third-largest), and later the Шаблон:Convert at Yerkes Observatory, which remains the largest successful refracting telescope in the world.
Although not specifically searching for double stars, he did make a number of discoveries while testing his completed telescope objectives,[1] including Mu Herculis, 8 Sextantis, and 95 Ceti.[2] One of Clark's sons, Alvan Graham Clark, discovered the dim companion of Sirius. Two craters bear Clark Sr.'s name. The crater Clark on the Moon is jointly named for him and his son, Alvan Graham Clark, and one on Mars is named in his honour.[3] His other son was George Bassett Clark; both sons were partners in the firm.
Clark was also competitive in target shooting and received a patent for his device to allow bullets to be seated into a muzzle-loading rifle without damage to either the bullet or the rifle's muzzle. Exclusive license to this patent (1,565 of April 24, 1840) was made to Edwin Wesson, brother of Daniel B. Wesson.[4]
In 1880, Clark was elected as a member to the American Philosophical Society.[5]
See also
Image gallery
- Portraits by Clark
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Portrait of an unidentified woman, c. 1835 (Metropolitan Museum of Art, New York City)
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Portrait of John Pickering, c. 1840 (Museum of Fine Arts, Boston)
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Portrait of Samuel Hall Gregory, c. 1840s (Smithsonian, Washington D.C.)
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Portrait of Joseph Story, 1846 (Museum of Fine Arts, Boston)
References
Further reading
- "Recent Deaths. Alvan Clark." Boston Daily Evening Transcript, 19 August 1887.
- "Autobiography of Alvan Clark." New-England Historical and Genealogical Register 43 (January 1889): 52-58.
- Шаблон:Cite DAB
- Warner, Deborah Jean. Alvan Clark & Sons, Artists in Optics. Washington, 1968.
External links
- National Gallery of Art has works by Clark
- Шаблон:Cite NSRW
- Страницы с неработающими файловыми ссылками
- Английская Википедия
- 1804 births
- 1887 deaths
- American astronomers
- Telescope manufacturers
- Burials at Mount Auburn Cemetery
- People from Ashfield, Massachusetts
- Recipients of the Lalande Prize
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
