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Operations CXO Status Report

Friday 8 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 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:

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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