Yerkes Observatory

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Yerkes Observatory,

astronomical observatoryobservatory,
scientific facility especially equipped to detect and record naturally occurring scientific phenomena. Although geological and meteorological observatories exist, the term is generally applied to astronomical observatories.
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 located in Williams Bay, Wis., on the shore of Lake Geneva. It was founded in 1892 with funds provided by Charles T. YerkesYerkes, Charles Tyson
, 1837–1905, American financier, b. Philadelphia. He began his business career as a clerk in a Philadelphia grain commission house. He became a broker in 1858 and prospered, but in 1871 he was convicted of misappropriating city funds and was
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 and its first director was George E. HaleHale, George Ellery,
1868–1938, American astronomer, b. Chicago, grad. Massachusetts Institute of Technology, 1890. He founded and directed three great observatories (Yerkes, Mt.
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. The observatory is administered by the Univ. of Chicago. The principal instrument is a 40-in. refracting telescopetelescope,
traditionally, a system of lenses, mirrors, or both, used to gather light from a distant object and form an image of it. Traditional optical telescopes, which are the subject of this article, also are used to magnify objects on earth and in astronomy; other types of
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, completed in 1897, the largest of its type in the world; its size is very near the practical limit for a refractor because of distortions caused by the weight of the lens itself. Other equipment includes a 41-in. and two 24-in. reflecting telescopes and a number of specialized instruments. Principal programs include astrometry, and studies of comets, galaxies, and the interstellar medium.

Yerkes Observatory


a scientific institution of the Uni-versity of Chicago (USA). It was organized in 1892–97, 22 kmfrom Chicago. Its instruments include a 102-cm (40-in.) refrac-tor (the largest in the world, constructed by A. G. Clark andpaid for by C. Yerkes), a 30-cm (12-in.) double refractor, afour-camera astrograph (largest objectives, 25 and 16 cm) witha 13-cm (5-in.) visual refractor, 102-cm (40-in.) and 60-cm(24-in.) reflectors, a Schmidt camera, and a 15-cm (6-in.) comet-finder. Work is conducted at the observatory on solar research, the determination of stellar parallaxes and radial velocities, thestudy of double stars, stellar polarization, stellar photometry, and the photographing of stars and planets. Yerkes Observatoryissues Publications (since 1900).

References in periodicals archive ?
George van Biesbroek of the Yerkes Observatory was set up.
edu/yerkes/) Yerkes Observatory in Williams Bay, Wis.
Educated at Vanderbilt University, he joined the staff of Lick Observatory in 1887 and moved to the newly established Yerkes Observatory eight years later (Sheehan, 1995).
The Wednesday afternoon session at the Watkins Institute attracted a diverse group of speakers and an appreciative audience who learned of Barnard's early life in Nashville, his research at Lick Observatory in California, and his long career with Yerkes Observatory in Wisconsin Mary Ross Calvert, Barnard's niece and long-time secretary, provided a personal view of her uncle's career at Yerkes, while noted astronomers Robert G.
Reviewed by Kyle Cudworth, Professor of Astronomy at the University of Chicago and Director of Yerkes Observatory, Williams Bay, WI 53191.
In 1945 Herzberg returned to his youthful interest in astrophysics when he accepted a position at the Yerkes Observatory of the University of Chicago at Williams Bay.
He worked at Yerkes Observatory in Chicago - he was born in Chicago, went to MIT.
Winston and Gleckman use a 16-inch astronomical mirror borrowed from the university's Yerkes Observatory, but to it they add a device that squeezes the image the mirror makes.
Looking back to the period when he was a volunteer research assistant at the Yerkes Observatory, he recollected what the great 40-inch [102cm] refracting telescope had revealed to him on several mornings in 1915 November and December, but especially December 15.
26 /PRNewswire/ -- Aurora University submitted a proposal on Friday to purchase Yerkes Observatory and the surrounding acreage and buildings located in Williams Bay, Wis.
He pointed out that his wife, Marjorie Meinel of JPL, is now working on TAU; back in 1917 her mother was doing astrometry at the Yerkes Observatory in Williams Bay, Wis.
Clark and Sons went on to manufacture the optics for the US Naval Observatory, the Lick Observatory and the Yerkes Observatory.