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[jeliza]

#Repost @space_telescopes (@get_repost) ・・・ Today marks the 24th anniversary of Hubble’s house call from the space telescope optometrists. On December 7-8, 1993, NASA astronauts Kathryn Thornton and Tom Akers installed Hubble’s Corrective Optics Space Telescope Axial Replacement (COSTAR) and Wide Field Planetary Camera 2 (WFPC2). COSTAR was designed by scientists and engineers at @STScI to compensate for a flaw in Hubble’s primary mirror that resulted in relatively blurry images. WFPC2 replaced the original WFPC, with corrective optics built in. This image shows spiral galaxy M100 as seen with the original WFPC on November 27, 1993 (right) and the same galaxy as seen with the WFPC2 on December 31, 1993 (left). M100, number 100 in Messier’s catalog of non-comets, is located 56 million light-years away in the constellation Coma Berenices. #HubbleHistory #NotAComet Credit: NASA, STScI.
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