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.

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

Yerkes Observatory The observatory of the University of Chicago at Williams Bay, Wisconsin, on the shores of Lake Geneva, at an altitude of 330 m. It was founded in 1897 by G. E.Hale with a grant from the American businessman Charles Tyson Yerkes (1837–1905). Its main instrument is the world's largest refractor, aperture 40 inches (1.02 m), opened in 1897. It also has a 1-m reflector, opened in 1967, with adaptive optics added in 1994. http://astro.uchicago.edu/yerkes/