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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

------------------------------------------
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

------------------------------------------

All spacecraft subsystems continued to support nominal operations.

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