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Operations CXO Status Report

Friday 22 March 2002 6.30pm EST

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.

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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

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All spacecraft subsystems continued to operate nominally.

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