In the Payload Hazardous Servicing Facility (PHSF), a worker begins to open the protective covering over a part of payload flight hardware for the third Hubble Space Telescope Servicing Mission (SM-3A). The hardware will undergo final testing and integration of payload elements in the PHSF. Mission STS-103 is a "call-up" mission which is being planned due to the need to replace portions of the Hubble's pointing system, the gyros, which have begun to fail. Although Hubble is operating normally and conducting its scientific observations, only three of its six gyroscopes are working properly. The gyroscopes allow the telescope to point at stars, galaxies and planets. The STS-103 crew will not only replace gyroscopes, it will also replace a Fine Guidance Sensor and an older computer with a new enhanced model, an older data tape recorder with a solid state digital recorder, a failed spare transmitter with a new one, and degraded insulation on the telescope with new thermal insulation. The crew will also install a Battery Voltage/Temperature Improvement Kit to protect the spacecraft batteries from overcharging and overheating when the telescope goes into a safe mode. Launch of STS-103 is currently targeted for Oct. 14 but the date is under review. (Photo Release Date: 08/15/1999 )
KSC-99PP-1048 - Raw ASCII Text Caption file
KSC-99PP-1048 - Low (GIF Format, 320x240 pixels x 256 colors, approx 50 Kbytes)
KSC-99PP-1048 - Medium (JPEG format, 1024x768 pixels x 256 colors, approx 250 Kbytes)
KSC-99PP-1048 - High (JPEG, 2040x2640 pixels x 16 million colors, approx 400 Kbytes)
STS-103 KSC Photo IndexNext Image KSC-99PP-1049
DISCLAIMER: No copyright protection is asserted for these photographs.
If a recognizable person appears in this photograph, use for commercial purposes may infringe a right of privacy or publicity. It may not be used to state or imply the endorsement by NASA of a commercial product. These photographs are available for preview and download in electronic digital form ONLY. They may not be ordered from NASA in photograph form. (See NASA Copyright Notice)