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Hubble Guide Star Catalog : ウィキペディア英語版 | Guide Star Catalog The Guide Star Catalog (GSC) is also known as the ''Hubble Space Telescope, Guide Catalog'' (''HSTGC''). It is a star catalog compiled to support the Hubble Space Telescope with targeting off-axis stars. GSC-I contained approximately 20,000,000 stars with apparent magnitudes of 6 to 15. GSC-II contains 945,592,683 stars out to magnitude 21. As far as possible, binary stars and non-stellar objects have been excluded or flagged as not meeting the requirements of Fine Guidance Sensors. This is the first full sky star catalog created specifically for navigation in outer space. ==History==
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「Guide Star Catalog」の詳細全文を読む
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