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Yerkes Observatory is an astronomical observatory in Williams Bay, Wisconsin operated by the University of Chicago Department of Astronomy and Astrophysics. 〔(Yerkes Observatory-Home )〕〔(The Department of Astronomy and Astrophysics at the University of Chicago-A Bit of History )〕 The observatory, which calls itself "the birthplace of modern astrophysics,"〔(Observatory website )〕 was founded in 1897 by astronomer George Ellery Hale and financed by businessman Charles T. Yerkes.〔(Yerkes Observatory - 1892-1893 History of Yerkes Observatory )〕 It represented a shift in the thinking about observatories, from their being mere housing for telescopes and observers, to the modern concept of observation equipment integrated with laboratory space for physics and chemistry. The observatory has the world's largest refracting telescope successfully used for astronomy and a collection of over 170,000 photographic plates.〔(Observatory website )〕 The director of the observatory is Doyle "Al" Harper.〔(The Department of Astronomy and Astrophysics at the University of Chicago-Doyle "Al" Harper )〕 Notable astronomers who have conducted research at Yerkes include Edwin Hubble (who did his graduate work at Yerkes and for whom the Hubble Space Telescope was named), Subrahmanyan Chandrasekhar (for whom the Chandra Space Telescope was named), prolific Russian-American astronomer Otto Struve,〔(The Department of Astronomy and Astrophysics at the University of Chicago-A Bit of History )〕 and the well-known twentieth-century popularizer of astronomy Carl Sagan. ==Telescopes== Yerkes Observatory's refracting telescope was built by the renowned refracting telescope company Alvan Clark & Sons. It is the largest refracting telescope used for scientific research. (A larger demonstration refractor, the Great Paris Exhibition Telescope of 1900, was exhibited at the Paris Universal Exhibition of 1900.) The mounting and tube for the telescope was exhibited at the 1893 World's Columbian Exposition in Chicago before being installed in the observatory. The grinding of the lens was completed later.〔(Yerkes Observatory - 1893 History of Yerkes Observatory )〕 The observatory also houses and reflecting telescopes. Several smaller telescopes are used for educational purposes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yerkes Observatory」の詳細全文を読む スポンサード リンク
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