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Operations CXO Status Report

Friday 8 December 2023 9.00am EST

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

A real-time procedure was executed on Dec 1 to patch the Control Processing Electronics (CPE) to decrease the Sun Point Angle k-constant angle from 30 to 15 degrees. This will mitigate the impact of potential large Fine Sun Sensor (FSS) errors.

Real-time procedures were executed on Dec 6 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer and to perform a diagnostic dump of the CPE.

The schedule of targets for the next week is shown below and includes an observation of NGC 3783 coordinated with XRISM, an observation of PSO J135.3860+16.251 coordinated with VLA, and observations of GRB231117A, which was accepted as a Target of Opportunity on Nov 24.



------------------------------------------
        Radiation Belts                     Dec 10
        PSOJ135.3860+16.251    ACIS-S
        NGC3245                HRC-I
        NGC3359                ACIS-I
        PSRJ0007+7303          ACIS-I
        CITau                  ACIS-S       Dec 12
        GRB231117A             ACIS-S
        HD23269                HRC-I
        BD+21516               HRC-I
        GRB231117A             ACIS-S
        CITau                  ACIS-S
        GRB231117A             ACIS-S
        HD23352                HRC-I        Dec 13
        NGC835                 ACIS-S
        Radiation Belts
        SDSSJ094648.59+1718    ACIS-S
        SDSSJ093533.88+2357    ACIS-S       Dec 14
        HZ43                   HRC-I /LETG
        SDSSJ095330.36+3532    ACIS-S
        SDSSJ101429.57+4819    ACIS-S
        NGC3359                ACIS-I
        PSRJ0007+7303          ACIS-I
        BD+22548               HRC-I
        HD282971               HRC-I
        GRB221009A             ACIS-S
        LEDA1797736            ACIS-S       Dec 15
        GRB221009A             ACIS-S
        GaiaDR215425725942     ACIS-S
        GRB221009A             ACIS-S
        GaiaDR214698914396     ACIS-S
        GRB221009A             ACIS-S
        HD282972               HRC-I
        NGC835                 ACIS-S
        Radiation Belts                     Dec 16
        PG0945+246             ACIS-I
        ESO0201-014            ACIS-S       Dec 17
        OrionNebulaCluster     ACIS-I
        IGRJ11131-5853         ACIS-S
        2MASXJ05192567+1742    ACIS-S
        NGC3783                ACIS-S/HETG
        NGC1522                ACIS-S
        OrionNebulaCluster     ACIS-I
        GJ2022B                ACIS-S       Dec 18
        OrionNebulaCluster     ACIS-I

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

All spacecraft subsystems continued to support nominal operations.

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