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CX2ACB > SAT 03.08.03 05:05l 36 Lines 1398 Bytes #999 (0) @ AMSAT
BID : ANS-215.08
Read: GUEST DB0FHN
Subj: Canada-U.S. Satellite gets a Triple Brain Transpla
Path: DB0FHN<DB0RGB<DB0MRW<OK0PKL<OK0PPL<DB0RES<ON0BEL<HA3PG<JE7YGF<7M3TJZ<
CX2ACB
Sent: 030803/0254Z @:CX2ACB.MVD.URY.SA #:6267 [Montevideo] $:ANS-215.08
From: CX2ACB@CX2ACB.MVD.URY.SA
To : SAT@AMSAT
AMSAT News Service Bulletin 215.08 From AMSAT HQ
SILVER SPRING, MD. August 9, 2003
To All RADIO AMATEURS
BID: $ANS-215.08
The Far Ultraviolet Spectroscopic Explorer (FUSE) satellite has been
given a new lease on life following the successful implementation of
new software in three on-board computers controlling the precision
pointing of the telescope.
For the past two years, engineers and scientists at the Johns Hopkins
University in Baltimore, Maryland, at Orbital Sciences Corporation in
Dulles, Virginia, at NASA Goddard Space Flight Center in Greenbelt,
Maryland, and at the Canadian Space Agency in Saint-Hubert, Quebec,
have worked together to change the flight software used for science
observations. The three spacecraft computers - the Attitude Control
System, the Instrument Data System, and the processor on the Fine Error
Sensor (FES) guide camera, provided by the Canadian Space Agency - all
received new software directly in space via up-links established in
mid-April 2003.
FUSE can now operate without gyroscopes with no degradation in science
data quality and only a slight loss of observation scheduling
efficiency. The gyroscopes aboard FUSE do not move the satellite,
but they provide information on how the spacecraft is moving or
drifting over time.
[ANS thanks Canadian Space Agency for the above information.]
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