Which servicing mission, launching in December 1993, successfully deployed the corrective optics?
Answer
SM1 (Servicing Mission 1)
The necessary repairs and installation of the corrective optics were carried out during the first dedicated maintenance endeavor, designated Servicing Mission 1, or SM1. This complex and high-stakes mission launched aboard the Space Shuttle Endeavour in December 1993. Astronauts conducted five strenuous spacewalks to swap out the original Wide Field/Planetary Camera for the corrected WFPC2, install the COSTAR package, and address other necessary maintenance, such as repairing the Solar Array Drive Electronics (SADE). The success of SM1 was crucial as it finally brought the telescope's performance up to its designed standards.
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