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'''Yerkes Observatory''' is an [[Observatory|astronomical observatory]] in [[Williams Bay, Wisconsin]] operated by the [[University of Chicago]] Department of Astronomy and Astrophysics.
<ref>[http://astro.uchicago.edu/yerkes/ Yerkes Observatory-Home]</ref><ref>[http://astro.uchicago.edu/aboutus/history.php The Department of Astronomy and Astrophysics at the University of Chicago-A Bit of History]</ref>
The observatory, which calls itself "the birthplace of modern astrophysics,"<ref>[http://astro.uchicago.edu/yerkes/ Observatory website]</ref> was founded in 1897 by astronomer [[George Ellery Hale]] founded it in 1897 with financial support from businessman [[Charles Tyson Yerkes|Charles T. Yerkes]].<ref>[http://astro.uchicago.edu/yerkes/history/1892.html Yerkes Observatory - 1892-1893 History of Yerkes Observatory]</ref> John Johnston Jr. donated a 53-acre site on the shore of [[Lake Geneva]] for the observatory.
The observatory houses a 40" refracting [[telescope]]. This is the largest refracting telescope ever successfully used for astronomy.<ref>{{cite web
| title=Yerkes Observatory: Home of Largest Refracting Telescope
| url=http://www.space.com/26858-yerkes-observatory.html
| publisher=Space.com
| author=Elizabeth Howell
| date=August 15, 2014
| accessdate=April 3, 2017
}}</ref> and a collection of over 170,000 photographic plates.<ref>[http://astro.uchicago.edu/yerkes/plates/plates.html Observatory website]</ref>
==References==
<references/>
[[Category:Wisconsin]]
[[Category:Astronomy]]
<ref>[http://astro.uchicago.edu/yerkes/ Yerkes Observatory-Home]</ref><ref>[http://astro.uchicago.edu/aboutus/history.php The Department of Astronomy and Astrophysics at the University of Chicago-A Bit of History]</ref>
The observatory, which calls itself "the birthplace of modern astrophysics,"<ref>[http://astro.uchicago.edu/yerkes/ Observatory website]</ref> was founded in 1897 by astronomer [[George Ellery Hale]] founded it in 1897 with financial support from businessman [[Charles Tyson Yerkes|Charles T. Yerkes]].<ref>[http://astro.uchicago.edu/yerkes/history/1892.html Yerkes Observatory - 1892-1893 History of Yerkes Observatory]</ref> John Johnston Jr. donated a 53-acre site on the shore of [[Lake Geneva]] for the observatory.
The observatory houses a 40" refracting [[telescope]]. This is the largest refracting telescope ever successfully used for astronomy.<ref>{{cite web
| title=Yerkes Observatory: Home of Largest Refracting Telescope
| url=http://www.space.com/26858-yerkes-observatory.html
| publisher=Space.com
| author=Elizabeth Howell
| date=August 15, 2014
| accessdate=April 3, 2017
}}</ref> and a collection of over 170,000 photographic plates.<ref>[http://astro.uchicago.edu/yerkes/plates/plates.html Observatory website]</ref>
==References==
<references/>
[[Category:Wisconsin]]
[[Category:Astronomy]]