Astronaut Kathryn C. Thornton lifts the Corrective Optics Space Telescope Axial Replacement (COSTAR) prior to its installation into the Hubble Space Telescope (HST). Thornton is anchored to a foot restraint on the end of the Remote Manipulator System (RMS) arm. Thomas D. Akers, assisting in the COSTAR installation, is at the lower left. The two space walkers participated in the mission's second and fourth (of five total) extravehicular activities (EVAs) designed to service the giant telescope.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/144614754@N02">NASA Hubble Space Telescope</a>
2012-01-19 00:11
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nasahubble/28051096071/">Astronauts Thornton and Akers during Installation of COSTAR into Hubble Space Telescope</a>