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Operations CXO Status Report

Friday 5 August 2011 9.00am EDT

During the last week the observing schedule was interrupted by a high radiation event that stopped the daily load at 03:03am EDT on Aug 4 and activated the science instrument safing sequence (SCS 107). All spacecraft actions were nominal. A real-time procedure was executed on Aug 4 disable SCS-29, which was enabled during the safing sequence.

A real-time procedure was executed on Aug 3 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer. A second real-time procedure was executed on Aug 4 to update the on-board ephemeris.

Of note this week was the "2011 X-ray Astronomy School" held in Cambridge, MA Aug 1-5, followed by a CIAO Workshop on Aug 6.

Assuming the radiation environment is low enough to resume science observations later today, the schedule of targets for the next week is shown below.



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S26inNGC7793 ACIS-S Aug 5 Radiation Belts Aug 7 XTEJ1710-281 ACIS-S/HETG NGC4649 ACIS-S Aug 8 Gl124 ACIS-S Aug 9 3C445 ACIS-S/HETG Radiation Belts SPT-CLJ2043-5035 ACIS-I Aug 10 CHECCS000105-2503 ACIS-I Aug 11 PSRJ0821-4300 ACIS-S NGC4649 ACIS-S Aug 12 Radiation Belts Abell1775 ACIS-S ESO490-IG026 ACIS-S Aug 13 S26inNGC7793 ACIS-S

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All spacecraft subsystems continued to support nominal operations.

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