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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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