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Operations CXO Status Report

Friday 6 April 2007 8.00am EDT

During the last week the observing schedule was replanned to include a 20 Ks observation of the anomalous X-ray pulsar AXP 1E 1048.1-5937 following the detection by RXTE of a glitch event from the pulsar. The source was accepted as a fast turn-around Target Of Opportunity (TOO) on 2 Apr and loads were replanned and uplinked on 4 Apr. The observation was accommodated by deleting an observation of ESO 255-IG0007 and inserting an observation of GRS 1741.9-2853 as part of the replan.

A real-time procedure was completed on 1 Apr to swap back from SSR-B to SSR-A after a DSN outage led to a missed pass and an autonomous switch to SSR-B. The SSR-B timeout status flag was detected in an unexpected set state following the power-off of SSR-B. The state was understood following analysis as due to a specific timing condition and cleared with a real-time procedure on 2 Apr.

The schedule of targets for next week is shown below and includes the next 7 observations of the C-COSMOS survey.

Radiation Belts Apr 8 C-COSMOS5-5 ACIS-I Apr 9 C-COSMOS5-6 ACIS-I 2MASX J110957+0201 ACIS-S Apr 10 C-COSMOS6-2 ACIS-I 2MASX J161209+0003 ACIS-S Radiation Belts Apr 11 C-COSMOS6-3 ACIS-I C-COSMOS6-4 ACIS-I Apr 12 9 ACIS-S 751 ACIS-S NGC 4037 ACIS-S Apr 13 C-COSMOS6-5 ACIS-I Radiation Belts C-COSMOS6-6 ACIS-I Apr 14 Capella ACIS-S/LETG Apr 15


All spacecraft subsystems continued to support nominal operations.

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