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Operations CXO Status Report

Friday 25 May 2001 11.00am EDT

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

A real-time procedure was conducted on 22 May to collect raw-mode data from the ACIS S0 chip without running in squeegee mode. The procedure was run as part of an investigation into using pre-cursor events to mitigate CTI degradation on-orbit. A series of further related tests will be run from the daily-load over the next 2-3 months.

Of note this week was the approval for operations of a new version of the Off-Line System (OFLS) ground software. The new version (9.1B) provides a number of improvements and bug fixes including an increased optimization of the scheduling algorithm and a better calculation for Earth avoidance during slews. The new software is scheduled to begin operational use on May 29.

The planned observations for the coming week are shown below.

NGC 4258 ACIS-S May 28 ARP 242 ACIS-S May 29 NGC 4382 (M85) ACIS-S LBQS 1212+1445 ACIS-S LBQS 1029-0125 ACIS-S LBQS 1442-0011 ACIS-S May 30 Radiation Belts 3C281 ACIS-S NGC4594 ACIS-S AGX J103244-1424 ACIS-I May 31 M 67 ACIS-I Abell 1204 ACIS-I MACS J1149.5+2223 ACIS-I Jun 1 MACS J1423.8+2404 ACIS-I 2MASSJ145331+1353 ACIS-I CI AQL ACIS-S NGC266 ACIS-S Radiation Belt 3C 275.1 ACIS-S Jun 2 NGC 4365 ACIS-S NGC 3585 ACIS-S Jun 3 3C 228 ACIS-S


All spacecraft subsystems continued to operate nominally.

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