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Yerkes Observatory (/ ˈ j ɜːr k iː z / ⓘ YUR-keez) is an astronomical observatory located in Williams Bay, Wisconsin, United States. The observatory was operated by the University of Chicago Department of Astronomy and Astrophysics [ 2 ] [ 3 ] from its founding in 1897 until 2018.
The 40-inch (1.02 m) refractor telescope backdrops Albert Einstein's visit to the Yerkes Observatory in May 1921. The 40-inch refractor telescope was modernized in the late 1960s with electronics of the period.
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The 102 centimetres (40 in) refractor, at Yerkes Observatory, the largest achromatic refractor ever put into astronomical use (photo taken on 6 May 1921, as Einstein was visiting) Refractors suffer from residual chromatic and spherical aberration .
The original can be viewed here: Portrait of Albert Einstein and Others (1879-1955), Physicist - Original.jpg: . Modifications made by Bammesk . This is a featured picture on Wikimedia Commons ( Featured pictures ) and is considered one of the finest images.
The Astrophysical Journal was previously published at the observatory and the facility was the site of the first meeting of the American Astronomical Society in 1899. Albert Einstein visited the observatory during his first trip to the United States in 1921. The facility is operated by the Yerkes Future Foundation.
George Ellery Hale (June 29, 1868 – February 21, 1938) was an American astrophysicist, best known for his discovery of magnetic fields in sunspots, and as the leader or key figure in the planning or construction of several world-leading telescopes; namely, the 40-inch refracting telescope at Yerkes Observatory, 60-inch Hale reflecting telescope at Mount Wilson Observatory, 100-inch Hooker ...
The Swedish 1-m Solar Telescope, with a lens diameter of 43 inches, is technically the largest, with 39 inches clear for the aperture.The second largest refracting telescope in the world is the Yerkes Observatory 40 inch (102 cm) refractor, used for astronomical and scientific observation for over a century.