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Operations CXO Status Report

Friday 18 September 2020 9.00am EDT

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

Real-time procedures were executed during each ground contact to reset the DSN Outage Dead Man Load.

Following the return to service on Sep 7 of the High Resolution Camera (HRC) anti-coincidence shield, which serves as primary autonomous radiation monitor for safing of the science instruments and had been turned off since the HRC anomaly of Aug 24, and with additional operational precautions in place, science observations with the ACIS instrument began as scheduled on Sep 12 and are proceeding nominally. The Chandra science instrument and engineering teams continue to analyze the HRC anomaly and are working to return the camera to normal science operations.

The schedule of targets for the next week is shown below and includes an observation of AT2019wey, which was accepted as a Director's Discretionary Time Target of Opportunity on Sep 12.



------------------------------------------
        Radiation Belts                     Sep 20
        AT2019wey/SRG          ACIS-S/HETG
        Abell2495              ACIS-S
        JWST-DTDF-8            ACIS-I       Sep 21
        Abell2495              ACIS-S
        JWST-DTDF-8            ACIS-I
        G29-38                 ACIS-S
        JWST-DTDF-8            ACIS-I       Sep 22
        Radiation Belts                     Sep 23
        SPT0348-62             ACIS-I
        SN2009em               ACIS-S
        G29-38                 ACIS-S
        H1821+643              ACIS-S       Sep 24
        G29-38                 ACIS-S
        Abell2345              ACIS-I
        3FGLJ1528.3-5836       ACIS-S
        Abell2345              ACIS-I       Sep 25
        Radiation Belts
        ZwCl1447.2+2619        ACIS-I
        Abell2495              ACIS-S       Sep 26
        H1821+643              ACIS-S
        G29-38                 ACIS-S
        SDSSJ1550+0806         ACIS-S
        G29-38                 ACIS-S       Sep 27
        H1821+643              ACIS-S
        Abell2345              ACIS-I
        Radiation Belts

------------------------------------------

All spacecraft subsystems continued to support nominal operations.

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