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Operations CXO Status Report

Friday 20 March 2020 9.00am EDT

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

Real-time procedures were executed on Mar 13, Mar 14, Mar 15, and Mar 17 to dump OBC-A and -B memory as a follow-up to the flight software patch uplinked last Friday. The dump will be used to update the baseline memory images maintained on the ground.

A Chandra press release was issued on Mar 19 describing analysis of Chandra observations of the Perseus galaxy cluster. Researchers used the Chandra data to try to detect the presence of axions. The resulting non-detection puts a very stringent limit on the maximum mass of the axion. For details see:

The schedule of targets for the next week is shown below and includes an observation of PSO J047.4479+27.2993, which was accepted as a Director's Discretionary Time Target of Opportunity on Dec 12.

        ArLac (21 obs)         HRC-I        Mar 22
        M87                    HRC-I        Mar 23
        Spiderweb              ACIS-S
        SNR1987A               HRC-S /LETG
        Radiation Belts                     Mar 24
        PSOJ047.4479+27.299    ACIS-S
        Gd394                  HRC-S /LETG  Mar 25
        M87Halo3               ACIS-S
        PSS1326+0743           ACIS-S
        SgrA*                  ACIS-S       Mar 26
        Spiderweb              ACIS-S
        Radiation Belts                     Mar 27
        NGC4438                ACIS-S
        H1821+643              HRC-S /LETG
        NGC4438                ACIS-S
        PSO167-13              ACIS-S       Mar 28
        SNR1987A               HRC-S /LETG
        PSO167-13              ACIS-S
        Radiation Belts                     Mar 29


All spacecraft subsystems continued to support nominal operations.

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