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Operations CXO Status Report

Friday 2 October 2009 9.00am EDT

During the last week Chandra completed the observing schedule as planned.

A real-time procedure was executed on Oct 1 to test an update to the MUPS thruster firing parameters. The flight software was temporarily patched with the updated parameters for a short, scheduled MUPS thruster firing. The thruster firing performed as expected. The firing parameter update was planned pre-launch as a maintenance activity to compensate for the decrease in thruster impulse with fuel use. As an additional benefit the updated firing parameters are expected to decrease susceptibility to thermal choking in the thrusters.

The schedule of targets for the next week is shown below

Radiation Belts Oct 4 ISCSJ1438+3414 ACIS-S SDSSJ095209.56+21431 ACIS-S Oct 6 3C88 ACIS-S Radiation Belts XMMUJ0152-1338 ACIS-I Oct 7 SPT-CL0534-5005 ACIS-I PSRJ1357-6429 ACIS-I Oct 8 ISCSJ1438+3414 ACIS-S Radiation Belts Oct 9 SPT-CL0534-5005 ACIS-I Oct 10 NGC1172 ACIS-S Perseus cluster ACIS-I


All spacecraft subsystems continued to support nominal operations.

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