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Operations CXO Status Report

Friday 20 October 2023 9.00am EDT

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

A real-time procedure was executed on Oct 13 to uplink a flight software patch to reduce the deviations from normal sun pitch and roll angles within which FSS data are relied upon for transitioning from Sun acquisition to Sun point submode, to better accommodate degradation in FSS data.

Real-time procedures were executed on Oct 13-16 to dump OBC-A and -B memory as a follow-up to the flight software patch on Oct 13. The dump will be used to update the baseline memory images maintained on the ground.

Chandra passed through the 16th, 17th, and 18th eclipses of the season on Oct 13, 16, and 19 respectively, with nominal power and thermal performance.

The schedule of targets for the next week is shown below and includes observations of SwiftJ1727.8-1613, which was accepted as a Target of Opportunity on Oct 10, observations of AT2023fhn, which is a follow-up to a Target of Opportunity accepted on Apr 21, and observations of AT2018hco coordinated with VLA.



------------------------------------------
        Radiation Belts                     Oct 22
        AT2018hco              ACIS-S
        SwiftJ1727.8-1613      ACIS-S/HETG
        AT2018hco              ACIS-S       Oct 23
        SwiftJ1727.8-1613      ACIS-S/HETG
        AT2018hco              ACIS-S
        SwiftJ1727.8-1613      ACIS-S/HETG
        AT2018hco              ACIS-S
        SwiftJ1727.8-1613      ACIS-S/HETG  Oct 24
        SPT-CLJ0110-4445       ACIS-I
        Radiation Belts
        RMJ010949.3+051658.2   ACIS-I
        SwiftJ1727.8-1613      ACIS-S/HETG
        m31                    HRC-I        Oct 25
        SWIFTJ2037.2+4151      ACIS-S/HETG
        Abell2744              ACIS-I
        NGC2353                ACIS-I
        A399                   ACIS-I       Oct 26
        AT2023fhn              ACIS-S
        A399                   ACIS-I
        AT2023fhn              ACIS-S
        A399                   ACIS-I
        AT2023fhn              ACIS-S
        Radiation Belts                     Oct 27
        Abell2744              ACIS-I
        NGC2353                ACIS-I
        BD+05378               ACIS-S
        RXJ1002.2-1925         HRC-S /LETG
        HD15337                HRC-I        Oct 28
        DESJ2351-5452          ACIS-I
        SXDSFH-Dropout2        ACIS-I
        ESO137-G034            ACIS-S
        SXDSFH-Dropout2        ACIS-I
        ESO137-G034            ACIS-S
        SXDSFH-Dropout2        ACIS-I
        ESO137-G034            ACIS-S       Oct 29
        SXDSFH-Dropout2        ACIS-I
        AT2023fhn              ACIS-S
        Radiation Belts

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

All spacecraft subsystems continued to support nominal operations.

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