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Operations CXO Status Report

Friday 8 October 2010 9.00am EDT

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

A real-time procedure was executed on Oct 1 to monitor the performance of the MUPS thrusters during a firing at an elevated starting valve temperature. This was the seventh 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. During this demonstration anomalous performance appeared on one of the thrusters, providing bounds on the starting valve temperature that will be allowed in future momentum unloads. A second real-time procedure was executed on Oct 6 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer. A third real-time procedure was executed on Oct 8 to update the on-board ephemeris.

A Chandra image release was issued on Oct 5 of the supernova remnant G327.1-1.1. The composite image shows X-ray data from Chandra and XMM-Newton along with radio and infrared data. This remnant contains a pulsar, a rapidly spinning neutron star, that is producing the wind of relativistic particles seen in X-rays. For details see: http://chandra.harvard.edu/photo/2010/g327/ The schedule of targets for the next week is shown below and includes an observation of 4U 1608-522, which was accepted as a target of opportunity on Sep 29.

------------------------------------------
       4U1608-522             ACIS-S       Oct 11
       XTEJ1701-462           ACIS-S
       Radiation Belts                     Oct 12
       G296.5-0.1             ACIS-I
       SLJ1634.1+5639         ACIS-I
       0035+227               ACIS-S       Oct 13
       NGC262                 ACIS-S
       SLJ1634.1+5639         ACIS-I       Oct 14
       Radiation Belts
       RXJ1750.2+3505         ACIS-I       Oct 15
       NGC3603                ACIS-I
       J022441.4-190826       ACIS-S       Oct 17
       J230921.5+004540       ACIS-S

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

All spacecraft subsystems continued to support nominal operations.

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