Engineers eventually proceeded to develop a plan to correct the problem by inserting another mirror in Hubble to produce proportional deformation to the flawed mirror. Those two mirrors, working in conjunction with each other, would convert light transmissions accurately before the telescope's instruments interception of the corresponding image. Accordingly, Space Shuttle astronauts on a subsequent servicing mission planned to install the new optics in extended spacewalks. That plan unfolded when the Space Shuttle Endeavour made repairs to Hubble as part of a planned mission, in December 1993. The astronauts installed corrective optics, a new camera, and several other items. All in all, Endeavour’s mission saved Hubble as well as NASA’s reputation
