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During five tricky spacewalks, two teams of Discovery astronauts sharpened the Hubble Space Telescope's vision, upgraded its aging instruments and components, and repaired the orbiting observatory's peeled, sunburned skin. The four astronauts also came close to setting an endurance record, spending 33 hours and 11 minutes in space, just two hours shy of the spacewalking record set in 1993.
Here is a night-by-night recap of the repair mission.
Spacewalk 1
Date:February 13-14, 1997 Duration: 6 hours, 42 minutes Astronaut Team: 
(NASA Photos) Spacewalk Report: To improve Hubble's vision, astronauts Lee and Smith successfully replaced the Goddard High Resolution Spectrograph and the Faint Object Spectrograph with two new instruments, the Space Telescope Imaging Spectrograph and the Near Infrared Camera and Multi-Object Spectrometer.
28 sec.QuickTime movie
Spacewalk 2
Date:February 14-15, 1997 Duration: 7 hours, 27 minutes Astronaut Team: 
(NASA Photos) Spacewalk Report: Astronauts Harbaugh and Tanner replaced the Hubble's Fine Guidance Sensor and a failed Engineering and Science Tape Recorder with new spares. During their walk, they discovered cracks in the telescope's protective layer.
Spacewalk 3
Date:February 15-16, 1997 Duration: 7 hours, 11 minutes Astronaut Team: (NASA Photos) Spacewalk Report: Astronauts Lee and Smith removed and replaced a Data Interface Unit which provides command and data interfaces between Hubble's data management system and other subsystems. They also replaced an old reel-to-reel style Engineering and Science Tape Recorder with a new digital Solid State Recorder (SSR).
Large screen version - 1.6M Small screen version - 653K
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