| Spacewalks from Endeavour on Hubble Space Telescope Servicing Mission 1 (STS-61) | |||
|---|---|---|---|
| STS-61 Launch: | December 2, 1993 | Hubble Grappled: | December 4, 1993 |
| Hubble Released: | December 10, 1993 | STS-61 Landing: | December 13, 1993 |
| Spacewalkers: | Kathryn Thornton <> Jeffrey Hoffman <> Story Musgrave <> Thomas Akers | ||
| STS-61 Crew: | CDR Richard Covey <> PLT Kenneth Bowersox <> MS1 Kathryn Thornton <> MS2 Claude Nicollier (Switzerland) <> MS3 Jeffrey Hoffman <> MS4 Story Musgrave <> MS5 Thomas Akers |
||
| STS-61 Spacewalk 1 | Musgrave and Hoffman replaced two Rate Sensing Units (RSUs), two Electronics Control Units, and four fuse plugs. Each RSU contained a pair of gyroscopes. | ||
| December 4, 1993 | |||
| 7 hours 54 minutes | |||
| STS-61 Spacewalk 2 | Thornton and Akers installed new solar arrays to correct a "jitters" problem with the original solar arrays. The old starboard solar array was jettisoned since it failed to close properly. The old port solar array was stored in a carrier inside the payload bay. | ||
| December 5, 1993 | |||
| 6 hours 36 minutes | |||
| STS-61 Spacewalk 3 | Musgrave and Hoffman replaced the Wide Field/Planetary Camera (WFPC) with the Wide Field/Planetary Camera-2 (WFPC-2) to compensate for a flaw in Hubble's primary mirror. They also installed two new magnetometers near Hubble's aperture and four more fuse plugs. | ||
| December 6, 1993 | |||
| 6 hours 47 minutes | |||
| STS-61 Spacewalk 4 | Thornton and Akers replaced the Goddard High-Speed Photometer (GHSP) with the Corrective Optics Space Telescope Axial Replacement (COSTAR) unit to correct flaw in the primary mirror and installed a 386 co-processor to enhance the memory and speed of Hubble's 1970's-era DF-224 computer. | ||
| December 7, 1993 | |||
| 6 hours 50 minutes | |||
| STS-61 Spacewalk 5 | Musgrave and Hoffman replaced the Solar Array Drive Electronics (SADE) unit and installed the Goddard High-Resolution Spectrograph (GHRS) power supply redundancy kit. They helped with the deployment of Hubble's new solar arrays. | ||
| December 8, 1993 | |||
| 7 hours 21 minutes | |||
| Spacewalks from Discovery on Hubble Space Telescope Servicing Mission 2 (STS-82) | |||
|---|---|---|---|
| STS-82 Launch: | February 11, 1997 | Hubble Grappled: | February 13, 1997 |
| Hubble Released: | February 19, 1997 | STS-82 Landing: | February 21, 1997 |
| Spacewalkers: | Joseph Tanner <> Gregory Harbaugh <> Mark Lee <> Steven Smith | ||
| STS-82 Crew: | CDR Kenneth Bowersox <> PLT Scott Horowitz <> MS1 Joseph Tanner <> MS2 Steven Hawley <> MS3 Gregory Harbaugh <> MS4 Mark Lee <> MS5 Steven Smith |
||
| STS-82 Spacewalk 1 | Lee and Smith replaced the Goddard High Resolution Spectrograph (GHRS) with the Space Telescope Imaging Spectrograph (STIS). Lee and Smith also replaced the Faint Object Spectrograph (FOS) with the Near Infrared Camera and Multi-Object Spectrometer (NICMOS). | ||
| February 13, 1997 | |||
| 6 hours 42 minutes | |||
| STS-82 Spacewalk 2 | Harbaugh and Tanner replaced a degraded Fine Guidance Sensor and a failed Engineering and Science Tape Recorder with new spares. They also installed a new unit called the Optical Control Electronics Enhancement Kit to increase the capability of the new Fine Guidance Sensor. | ||
| February 14, 1997 | |||
| 7 hours 27 minutes | |||
| STS-82 Spacewalk 3 | Lee and Smith replaced a Data Interface Unit, and an old reel-to-reel style Engineering and Science Tape Recorder with a new digital Solid State Recorder (SSR), and changed out one of four Reaction Wheel Assembly units. | ||
| February 15, 1997 | |||
| 7 hours 11 minutes | |||
| STS-82 Spacewalk 4 | Harbaugh and Tanner replaced a Solar Array Drive Electronics package and covers over Hubble's magnetometers, and started installing new insulation. | ||
| February 16, 1997 | |||
| 6 hours 34 minutes | |||
| STS-82 Spacewalk 5 | After Lee and Smith noticed degraded thermal insulation on Hubble during the second spacewalk, a fifth spacewalk was added to the mission. Lee and Smith attached several thermal blankets over three equipment compartments. | ||
| February 17, 1997 | |||
| 5 hours 17 minutes | |||
| Spacewalks from Discovery on Hubble Space Telescope Servicing Mission 3A (STS-103) | |||
|---|---|---|---|
| STS-103 Launch: | December 20, 1999 | Hubble Grappled: | December 22, 1999 |
| Hubble Released: | December 25, 1999 | STS-103 Landing: | December 28, 1999 |
| Spacewalkers: | Steven Smith <> John Grunsfeld <> Michael Foale <> Claude Nicollier | ||
| STS-103 Crew: | CDR Curtis Brown <> PLT Scott Kelly <> MS1 Steven Smith <> MS2 Jean-François Clervoy (France) <> MS3 John Grunsfeld <> MS4 Michael Foale <> MS5 Claude Nicollier (Switzerland) |
||
| STS-103 Spacewalk 1 | Smith and Grunsfeld replaced all six gyroscopes, installed six Voltage/Temperature Improvement Kits to prevent overheating or overcharging of Hubble's batteries, and opened values and removed caps on the Near Infrared Camera and Multi-Object Spectrometer. | ||
| December 22, 1999 | |||
| 8 hours 15 minutes | |||
| STS-103 Spacewalk 2 | Foale and Nicollier installed a new advanced computer and a new Fine Guidance sensor. The new computer contained a 486 processor that replaced the old 1970's-era DF-224 computer. | ||
| December 23, 1999 | |||
| 8 hours 10 minutes | |||
| STS-103 Spacewalk 3 | Smith and Grunsfeld installed a new transmitter that replaced one that failed in 1998, and replaced an old reel-to-reel style Engineering and Science Tape Recorder with a new digital Solid State Recorder. | ||
| December 24, 1999 | |||
| 8 hours 8 minutes | |||
| Spacewalks from Columbia on Hubble Space Telescope Servicing Mission 3B (STS-109) | |||
|---|---|---|---|
| STS-109 Launch: | March 1, 2002 | Hubble Grappled: | March 3, 2002 |
| Hubble Released: | March 9, 2002 | STS-109 Landing: | March 12, 2002 |
| Spacewalkers: | John Grunsfeld <> Richard Linnehan <> James Newman <> Michael Massimino | ||
| STS-109 Crew: | CDR Scott Altman <> PLT Duane Carey <> MS1 John Grunsfeld <> MS2 Nancy Currie <> MS3 Richard Linnehan <> MS4 James Newman <> MS5 Michael Massimino |
||
| STS-109 Spacewalk 1 | Grunsfeld and Linnehan replaced the old starboard solar array with a new third-generation solar array and replaced its associated Diode Box Assembly. | ||
| March 4, 2002 | |||
| 7 hours 1 minute | |||
| STS-109 Spacewalk 2 | Newman and Massimino replaced the old port solar array with a new third-generation solar array and replaced its associated Diode Box Assembly. They also replaced a troublesome reaction wheel assembly unit. | ||
| March 5, 2002 | |||
| 7 hours 16 minutes | |||
| STS-109 Spacewalk 3 | Grunsfeld and Linnehan replaced the Power Control Unit. The operation required Hubble to be powered down for the first time since deployment in April 1990. | ||
| March 6, 2002 | |||
| 6 hours 48 minutes | |||
| STS-109 Spacewalk 4 | Newman and Massimino replaced the Faint Object Camera (FOC) with the Advanced Camera for Surveys. The Faint Object Camera was the last of Hubble's original instruments. | ||
| March 7, 2002 | |||
| 7 hours 30 minutes | |||
| STS-109 Spacewalk 5 | Grunsfeld and Linnehan installed the new NICMOS Cryogenic Cooler and its Cooling System Radiator to revive the Near Infrared Camera and Multi-Object Spectrometer (NICMOS). | ||
| March 8, 2002 | |||
| 7 hours 20 minutes | |||
| Key | |
|---|---|
| CDR | Commander |
| PLT | Pilot |
| MS | Mission Specialist |
Return to the Index of Spacewalks by Manned Space Program
Updated - January 12, 2007