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Yerkes Observatory

Yerkes Observatory, astronomical observatory located in Williams Bay, Wis., on the shore of Lake Geneva. It was founded in 1892 with funds provided by Charles T. Yerkes and its first director was George E. Hale. The observatory is administered by the Univ. of Chicago. The principal instrument is a 40-in. refracting telescope, 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.

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"Yerkes Observatory." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

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"Yerkes Observatory." The Columbia Encyclopedia, 6th ed.. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/yerkes-observatory

Yerkes Observatory

Yerkes Observatory Observatory of the University of Chicago, at Williams Bay, Wisconsin, USA. Founded by George Ellery Hale in 1897, Yerkes' main instrument is a 1m (40in) refractor, still the largest in the world.

http://uchicago.edu/yerkes

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"Yerkes Observatory." World Encyclopedia. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

"Yerkes Observatory." World Encyclopedia. . Encyclopedia.com. (July 23, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/yerkes-observatory

"Yerkes Observatory." World Encyclopedia. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/yerkes-observatory