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Operations CXO Status Report

Friday 24 February 2012 9.00am EST

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

A real-time procedure was completed on Feb 23 to uplink a flight software patch to allow the ACIS High-Radiation Flag to be made available to the on-board computer. This flag is planned for future use within the radmon process. Additional real-time procedures were executed on Feb 24 to dump OBC-A memory as a follow-up to the flight software patch. The dump will be used to update the baseline memory image maintained on the ground.

A Chandra press release was issued on Feb 21 describing Chandra observations that have found the fastest wind ever coming from a disk around a stellar-mass black hole. This record breaking wind is about 20 million miles per hour - about 3% the speed of light. This wind may be carrying away much more material than the black hole is actually capturing. For details see:

Of note this week was the release on Feb 23 of CALDB 4.4.8. This update includes ACIS time-dependent gain corrections for the period from November 1, 2011 through January 31, 2012. For details see:

The schedule of targets for the next week is shown below and includes an observation of PSN J05001372-0320512, which was accepted as a Target of Opportunity on Feb 17.

Radiation Belts                     Feb 26
         4C73.18                ACIS-S       Feb 27
         M31                    HRC-I
         EXO2030+375            ACIS-S/HETG
         G115.71+17.52          ACIS-I       Feb 28
         J1214.0+2932           ACIS-I
         HD188015               ACIS-S
         G38.7-1.4              ACIS-I
         J0232.3-3639           ACIS-I       Feb 29
         PSNJ05001372-032051    ACIS-S
         Radiation Belts
         NGC3393                ACIS-S/HETG
         SDSSJ123248.32+1349    ACIS-S       Mar  2
         Radiation Belts                     Mar  3
         SPT-CLJ0156-5541       ACIS-I


All spacecraft subsystems continued to support nominal operations.

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