- Alvan Graham Clark
Infobox_Scientist
name = Alvan Graham Clark
image_width = 260px
caption = Alvan Clark and his assistant Carl Ludin (right) alongside of the 40-inch lens, 1896.
birth_date = birth date|1832|7|10|mf=y
birth_place = Fall River,Massachusetts
death_date = death date and age|1897|6|9|1832|7|10|mf=y
death_place =
residence =
citizenship =
nationality = American
ethnicity =
field =Astronomy
work_institution =
alma_mater =
doctoral_advisor =
doctoral_students =
known_for =Sirius B
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footnotes =Alvan Graham Clark (
July 10 ,1832 –June 9 ,1897 ), born in Fall River,Massachusetts , was an American astronomer andtelescope -maker. He was the son ofAlvan Clark founder ofAlvan Clark & Sons .On
January 31 ,1862 , while testing a new 18-inch refractingtelescope , he made the first observation ofSirius B inCambridgeport ,Massachusetts . The magnitude 8 companion of Sirius is also the first knownwhite dwarf star.ee also
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List of astronomical instrument makers References
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* [http://www.deller.com/newpage6.htm The Dearborn Telescope]
* [http://chandra.harvard.edu/photo/2000/0065/index.html Sirius A & B: A Double Star System In The Constellation Canis Major]
* [http://www.astro.northwestern.edu/Observatory/chronology2.html Northwestern University Astronomy and Astrophysics - History of Dearborn Observatory]
* [http://www.boston.com/news/local/articles/2008/02/02/look_south_to_see_winters_brightest_constellations Look south to see winter's brightest constellations]Persondata
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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