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The Corrective Optics Space Telescope Axial Replacement (COSTAR) is the instrument designed to correct Hubble Space Telescope's spherical aberration for light focused at the FOC, FOS and GHRS instruments. Built by Ball Aerospace Corp., it replaced the High Speed Photometer (HSP) during the first Hubble Servicing Mission in 1993.〔(【引用サイトリンク】title=CORRECTIVE OPTICS SPACE TELESCOPE AXIAL REPLACEMENT (COSTAR) )〕 Later instruments, installed after HST's initial deployment, were designed with their own corrective optics. COSTAR was removed from HST in 2009 during the fifth servicing mission and replaced by the Cosmic Origins Spectrograph. It is now on exhibit in the Smithsonian's National Air and Space Museum. Image:Corrective Optics Space Telescope Axial Replacement.jpg|COSTAR being inserted into Hubble during First Servicing Mission. Image:Upgrading Hubble during SM1.jpg|Astronauts work on installing Hubble's corrective optics during Servicing Mission 1. File:Mechanism of COSTAR.JPG|Closeup of the working mechanism from COSTAR. The mirrors extended out from the body of COSTAR on the left. ==References== 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「Corrective Optics Space Telescope Axial Replacement」の詳細全文を読む スポンサード リンク
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