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Operations CXO Status Report

Friday 3 October 2025 9.00am EDT

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

Real-time procedures were executed on Sep 26 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 and performed nominally. Thruster A1 was not fired due to the expected limited life remaining on it.

Additional real-time procedures were executed on Oct 1 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).

The schedule of targets for the next week is shown below.



------------------------------------------
        Radiation Belts                     Oct  5
        ACT-CL_J0034.4+0225    ACIS-S
        PSRJ2017+3625          ACIS-I       Oct  6
        ACT-CL_J0034.4+0225    ACIS-S
        4U1626-67              HRC-S /LETG
        Abell370               ACIS-I
        Radiation Belts                     Oct  7
        1E161348-5055.1        ACIS-S
        SDSSJ003723.49+00081   ACIS-S
        1E161348-5055.1        ACIS-S       Oct  8
        PSZ2G302.85-88.63      ACIS-I
        MCG_01_05_047_s2       ACIS-S
        NGC3516                ACIS-S/HETG
        Abell370               ACIS-I       Oct  9
        NGC1546                ACIS-S
        Radiation Belts                     Oct 10
        NGC2566                ACIS-S
        SDSSJ015634.87-0110    ACIS-S
        HEPG226.816-02.799     ACIS-I
        NGC2566                ACIS-S
        Abell370               ACIS-I       Oct 11
        IGRJ07141+0146         ACIS-I
        HEPG230.954+02.322     ACIS-I
        Abell370               ACIS-I
        1eRASSJ080701.4+023    ACIS-S
        PSRJ2229+6114          ACIS-I
        Radiation Belts                     Oct 12

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

All spacecraft subsystems continued to support nominal operations.

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