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Operations CXO Status Report

Friday 23 April 2010 9.00am EDT

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

A real-time procedure was executed on Apr 20 to monitor the performance of the MUPS thrusters during a firing at an elevated starting valve temperature. This was the fourth in a planned series of performance demonstrations, which are hoped to allow for the relaxation of the constraint on starting valve temperatures on scheduling momentum dumps. A second real-time procedure was executed on Apr 22 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer.

Of note this week was the release on Apr 19 of CALDB 4.2.2 This update includes CalDB header corrections for two ACIS T_GAIN files and a corrected ACIS-I1 Group E blank-sky background file that were identified as problems in the 4.2.1 release.

The schedule of targets for the next week is shown below

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Radiation Belts Apr 26 NGC602 ACIS-I CentaurusA ACIS-I PKS1229-02 ACIS-S Q0957+561 ACIS-S Apr 27 NGC602 ACIS-I CassiopeiaA ACIS-S/HETG A1795 ACIS-S Apr 28 Radiation Belts PKS2155-304 ACIS-S/LETG Apr 29 CassiopeiaA ACIS-S/HETG NGC602 ACIS-I IRAS12127-1412 ACIS-S Apr 30 XMMUJ1230+1339 ACIS-S Radiation Belts May 1 SNR0049-73.6 ACIS-S NGC5408X-1 ACIS-S May 2 XMMUJ1230+1339 ACIS-S SNR0049-73.6 ACIS-S

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All spacecraft subsystems continued to support nominal operations.

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