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Operations CXO Status Report
Friday 12/22/00 8.00am EST
During the last week, Chandra completed the observing schedule
as planned.
Last week, routine procedures were completed to update the
on-board Ephemeris and conduct a check of the CPE warm start
count (value remained at 1). Progress has been made in
understanding why this counter incremented during the early
safe-mode trips, and has been found to be caused by a subtle
software timing behavior, rather than the hardware
itself.
Other items of note include a successful software patch to the
On Line System (ONLS) on Dec 15 to fix a script operation
problem. The intermittent problem was unmasked following the
upgrade to a new Operating System on 2 November.
The third Chandra NASA Research Announcement (NRA) is on track
for release on December 28, and will call for observing and
archive proposals with a due date of March 15. Observations of
targets from this cycle are expected to begin in November
2001.
The Mission planning team worked hard to develop a 2 week
schedule to cover the holidays as shown below. Of note are the
large number of time-constrained HETG observations, including
that of the peer reviewed Target of Opportunity Cen X-3 and the
Director's Discretionary Time TOO Cygnus X-1 that triggered
last week.
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ZW3146 ACIS-S/HETG Dec 25
Radiation Belts Dec 27
Xi Uma ACIS-S/HETG Dec 28
WR140 ACIS-S/HETG Dec 29
Cen X-3 (TOO) ACIS-S/HETG
Radiation Belts Dec 30
NGC 5506 ACIS-S/HETG Dec 31
N103B ACIS-S/HETG
Radiation Belts Jan 1
Ty Pyx (HD77137) ACIS-S/HETG
Hydra A ACIS-S/HETG Jan 2
V 0332+53 ACIS-S
Cygnus X-1 (TOO) ACIS-S/HETG Jan 3
Abell 4059 ACIS-S
Radiation Belts
Rosette Field (multiple) ACIS-I Jan 4
WHDF ACIS-I Jan 5
A1689 ACIS-I Jan 6
Radiation Belts
RXJ13434+0001 ACIS-S Jan 7
F864X:052 ACIS-S
F864X:012 ACIS-S
AGX J134720-1129 ACIS-I
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All spacecraft subsystems continued to operate nominally.
The next report is planned for January 5 following the holiday. A
Happy Holiday and New Year to everyone from the Chandra Team!
Return to 2000 Status Reports
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