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The Kenwood Astrophysical Observatory was the personal observatory of George Ellery Hale, constructed by his father, William E. Hale, in 1890 at the family home in the Kenwood section of Chicago.〔(Kenwood Astrophysical Observatory Buildings, Instruments, Equipment, Grounds )〕 It was here that the spectroheliograph, which Hale had invented while attending MIT, was first put to practical use; and it was here that Hale established the ''Astrophysical Journal''. Kenwood's principal instrument was a twelve-inch refractor, which was used in conjunction with a Rowland grating as part of the spectroheliograph. Hale hired Ferdinand Ellerman as an assistant; years later, the two would work together again at the Mount Wilson Observatory. Hale's work attracted the attention of many in the astronomical community, and when he was hired at the University of Chicago as a professor of astronomy, more advanced astronomy students initially used the Kenwood Observatory. When Yerkes Observatory was established in 1897, the Kenwood instruments were donated to the University of Chicago and moved to the Yerkes facility in Williams Bay, Wisconsin. ==References== *For a gallery of photographs of the Kenwood Astrophysical Observatory and equipment, click on the following external link: :::(Kenwood Astrophysical Observatory Buildings, Instruments, Equipment, Grounds ) * * * 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「Kenwood Astrophysical Observatory」の詳細全文を読む スポンサード リンク
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