Chandra Operations CXO Status Report 22 Mar 2002

Last week the observing schedule was interrupted due to high radiation associated with solar flare activity. The loads were halted on March 18 at 9:51am EST through a ground command to execute the SI Safing SCS 107. This ensured that the accumulated radiation dose for ACIS remained below the allowed threshold. Loads were rebuilt for uplink on March 20, when the radiation environment reached an acceptable level.

Of note last week was the Chandra Cycle 4 proposal deadline at 7pm EST on March 15. A total of 818 proposals were received and the submission process proceeded smoothly.

The observing schedule for the next week is shown below and includes a tightly constrained observation of the target G292.2-0.5.

 -------------------------------------------
Radiation Belts                      Mar 25
PSR0628-28              ACIS-S
HCG 42                  ACIS-S
Q0941-080               ACIS-S       Mar 26
AX J1035.1+3938         ACIS-S
24 Ursae Majoris        ACIS-S/HETG
1ES 1028+511            ACIS-S/HETG
GK PER                  ACIS-S/HETG  Mar 27
Radiation Belts
NGC2362                 ACIS-S/HETG  Mar 28
1ES 1028+511            ACIS-S/HETG
24 Ursae Majoris        ACIS-S/HETG  Mar 29
M87                     ACIS-S       Mar 30
Radiation Belts
FTM0906+4952            ACIS-S
HS 0848+1119            ACIS-S
1030-357                ACIS-S       Mar 31
G292.2-0.5              ACIS-S
RX J170930.2-263927     ACIS-S
PKS2155-304             ACIS-I/LETG
-------------------------------------------

All spacecraft subsystems continued to operate nominally.