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Operations CXO Status Report
Friday 12/24/99 10:00am EST
During the last 48 hours Chandra completed an observation of
PSR J0822-4300 with HRC-I, observed the center of M-31 with
HRC-I, A521 with ACIS-I and passed through the radiation belts
with associated ACIS CTI measurements.
The B-side SI Safing software patch was uplinked on 12/21 and
completes the process of updating the spacecraft software to
protect the focal plane Science Instruments from radiation
damage in the event of a safing action or high radiation
environment.
Preparations were completed for handling Y2K contingencies. The
mission load to be uplinked on 12/31 will run for 3 days
performing scheduled science observations. If the load
completes without the next load being uplinked (e.g., in the
event of a ground system problem resulting in loss of
communication), a command sequence will execute to maneuver the
spacecraft to a safe long term attitude while communication
from the ground is restored.
During the next week Chandra will follow this observing
schedule:
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Alpha-Cen HRC/LETG Dec 24
NGC 1851 HRC/LETG Dec 25
PKS 2155-305 HRC/LETG
Radiation Belts Dec 26
NGC 253 ACIS-S
PSS 0248+1802 ACIS-S Dec 27
M31 Transient ACIS-I
Sigma Gem ACIS-S/LETG
Radiation Belts Dec 28
A665 ACIS-I Dec 29
3C 220.1 ACIS-S
M82 ACIS-I
First J0840+3633 ACIS-S
NGC 3227 ACIS-S/HETG Dec 30
V382 Velorum 1999 ACIS-I
PKS 0548-322 ACIS-I
PKS 0521-365 ACIS-S
NGC 1395 ACIS-I Dec 31
Radiation Belts
A0620-00 ACIS-S Jan 1
OMC2--3 ACIS-I
Q0254-334 ACIS-S Jan 2
Q0135-4001 ACIS-S
NGC 1553 ACIS-S
Radiation Belts Jan 3
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Return to 1999 Status Reports
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