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Operations CXO Status Report

Friday 5 December 2025 9.00am EST

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

Real-time procedures were executed on Dec 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).

A Chandra press release was issued on Dec 1 describing a new symphony based on data from NASA’s Chandra X-ray Observatory and the James Webb Space Telescope. The symphony transforms astronomical observations into music that traces the life cycle of stars. By using data sonifications from Chandra together with Webb data, the new composition provides an unprecedented connection to space through music derived from actual observations. For details see: https://chandra.harvard.edu/press/25_releases/press_120125.html.

The schedule of targets for the next week is shown below and includes observations of EXO 0748-676, which are follow-ups to a Target of Opportunity accepted on Apr 29, and observations of AT 2025abcr, which are follow-ups to a Target of Opportunity accepted on Nov 11.



------------------------------------------
        CygnusX-2              ACIS-S/HETG  Dec  8
        NGC3239                ACIS-S
        3CR152                 ACIS-S
        GW170817               ACIS-S
        3CR152                 ACIS-S
        GW170817               ACIS-S       Dec  9
        CenterofCOSMOS-Web     ACIS-I
        Radiation Belts                     Dec 10
        NGC4548                ACIS-S
        AT2025abcr             ACIS-S
        PuppisA                HRC-I
        Perseuscluster         ACIS-I
        AT2025abcr             ACIS-S       Dec 11
        GaiaDR234127701256     ACIS-S
        CygnusX-2              ACIS-S/HETG
        Perseuscluster         ACIS-I       Dec 12
        Radiation Belts
        NGC4548                ACIS-S
        Perseuscluster         ACIS-I       Dec 13
        EXO0748-676            ACIS-S
        Perseuscluster         ACIS-I
        EXO0748-676            ACIS-S
        Perseuscluster         ACIS-I       Dec 14
        2MASXJ17345436+5045    ACIS-S
        Perseuscluster         ACIS-I
        CenterofCOSMOS-Web     ACIS-I
        CenterofCOSMOS-Web     ACIS-I
        Radiation Belts

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

All spacecraft subsystems except HRC continued to support nominal operations.

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