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Operations CXO Status Report

Friday 10 March 2023 9.00am EST

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

Chandra passed through the 4th and 5th eclipses of the season on Mar 5 and 8 respectively, with nominal power and thermal performance.

A real-time procedure was executed on Mar 10 to patch SCS31 to use Fine Sun Sensor B in safe Mode.

Chandra press and image releases were issued on Mar 8 describing observations of the galaxy 3C 297. In several regards, 3C 297 has the qualities of a galaxy cluster. X-ray data from Chandra reveal large quantities of gas heated to millions of degrees and an X-ray hotspot indicative of a jet-galaxy interaction. However the galaxy appears to be isolated. Recent Chandra data indicate 3C 297 is most likely a “fossil group” instead of a galaxy cluster, a stage of galactic evolution where one galaxy is pulling in and merging with others. If that is the case, 3C 297 represents the most distant fossil group ever found. For details see:

The schedule of targets for the next week is shown below and includes observations of SDSS J094533.99+100950.1 and SDSS J110409.96+434507.0 which are coordinated with the Hobby-Eberly Telescope, and an observation of Terzan 5, which was accepted as a Director's Discretionary Time Target of Opportunity on Mar 1.

        SDSSJ130410.82+22172   ACIS-S       Mar 12
        GX340+0                ACIS-S/HETG  Mar 13
        SDSSJ121314.03+0807    ACIS-S
        Radiation Belts
        E0102-72.3             ACIS-I       Mar 14
        SDSSJ114722.65-03244   ACIS-S
        E0102-72.3             ACIS-I
        DELSJ091054.53-0414    ACIS-I
        SDSSJ075115.43+5054    ACIS-S
        JWST-DTDF-1            ACIS-I
        A1367orphancloud       ACIS-S       Mar 15
        JWST-DTDF-1            ACIS-I
        A1367orphancloud       ACIS-S
        PSZ2G041.45+29.10      ACIS-I
        Terzan5                ACIS-S       Mar 16
        Radiation Belts
        ESO338-4               ACIS-I
        SDSSJ120500.06-01562   ACIS-S
        ESO338-4               ACIS-I       Mar 17
        MOOJ1506+5137          ACIS-I
        DELSJ091054.53-0414    ACIS-I
        NGC2366                ACIS-S       Mar 18
        A1367orphancloud       ACIS-S
        2MFGC2280_s1           ACIS-S
        DELSJ091054.53-0414    ACIS-I
        Radiation Belts                     Mar 19
        DELSJ091054.53-0414    ACIS-I
        SDSSJ035150.97-0613    ACIS-S
        SDSSJ094533.99+1009    ACIS-S
        SDSSJ110409.96+4345    ACIS-S


All spacecraft subsystems except HRC continued to support nominal operations.

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