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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.
In 1981, the martial law was declared in Poland in order to suppress the Solidarity movement. In this period, many CAMK employees chose permanent emigration. With their presence abroad, they were providing journals for the library, spare parts for the ageing computer system, and money for postdocs and short-term visitors.
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.
Among the notable instruments the company built were the telescopes for Lick Observatory (1888, 36-inch, refracting); the United States Naval Observatory (1893); Yerkes Observatory (according to the 50th-anniversary book, [9] this was a 40-inch refracting telescope completed in time for display at the World's Columbian Exposition of 1893 ...
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