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Operations CXO Status Report

Friday 10 September 2021 9.00am EDT

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

Real-time procedures were executed on Sep 3 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer and to perform a diagnostic dump of the Control Processing Electronics (CPE).

An additional real-time procedure was executed on Sep 9 to perform an annual check-out of A-side MUPS thrusters, which are selected for use when Chandra is in its safe-mode configuration. Thrusters A2, A3, and A4 were fired. Thrusters performed nominally. Thruster A1 was not fired due to the expected limited life remaining on it.

The schedule of targets for the next week is shown below and includes an observation of MAXI J1848-015, which was accepted as a Target of Opportunity on Aug 25 and is coordinated with NRAO VLA.

        GDH23                  ACIS-I       Sep 12
        GDH23                  ACIS-I       Sep 13
        GDH23                  ACIS-I
        GDH23                  ACIS-I
        GDH23                  ACIS-I
        PKS0023-26             ACIS-S
        GDH22                  ACIS-I
        GDH22                  ACIS-I
        GDH22                  ACIS-I
        MAXIJ1848-015          ACIS-S
        2RXSJ222749.3-01135    ACIS-S       Sep 14
        MAXIJ1848-015          ACIS-S
        Radiation Belts                     Sep 15
        GDH22                  ACIS-I
        GDH22                  ACIS-I
        Jupiter                HRC-I
        NuSTARJ184135-0502.    ACIS-S       Sep 17
        Radiation Belts
        PKS1150+497            ACIS-S       Sep 18
        B2.22328+26            ACIS-S
        NGC253                 ACIS-I
        HD4915                 HRC-S
        M82X-2                 HRC-I        Sep 19
        A1351                  ACIS-I
        NGC7000_IC5070Group    ACIS-I


Use of the gratings is suspended pending a detailed review of the LETG insert anomaly. All other spacecraft subsystems continued to support nominal operations.

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