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Operations CXO Status Report

Friday 9 January 2026 9.00am EST

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

Real-time procedures were executed on Jan 7 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 Jan 6 describing a new X-ray video of Kepler’s Supernova Remnant by Chandra spanning 25 years. German astronomer Johannes Kepler was among those who saw the star’s explosion in 1604 A.D. Today, astronomers know that this was a Type Ia supernova remnant from the thermonuclear explosion of a white dwarf. This is the longest-spanning video of data ever released by Chandra, making it a remarkable tool in understanding these important objects. For details see: https://chandra.harvard.edu/press/26_releases/press_010626.html

The schedule of targets for the next week is shown below and includes an observation of Cyg X-2 with HRC-I, signifying the resumption of science observations using HRC-I.



------------------------------------------
        Radiation Belts                     Jan 12
        A1795                  ACIS-S
        ZwCl0857.9+2107        ACIS-S
        NGC5728                ACIS-S
        ZwCl0857.9+2107        ACIS-S
        NGC5728                ACIS-S
        ZwCl0857.9+2107        ACIS-S
        Radiation Belts                     Jan 13
        TVCassiopeia           ACIS-S/HETG
        B2.10719+32C           ACIS-S
        CygX-2                 HRC-I /HETG  Jan 14
        MKN421                 ACIS-S/LETG
        NGC5506                ACIS-S/HETG
        NGC2775                ACIS-S
        3C273                  ACIS-S/HETG
        SDSSJ081800.19+1918    ACIS-S       Jan 15
        SDSSJ161649.37-00425   ACIS-S
        SDSSJ081800.19+1918    ACIS-S
        Radiation Belts                     Jan 16
        A1795                  ACIS-I
        NGC2775                ACIS-S
        NGC5728                ACIS-S
        Abell2255              ACIS-I
        NGC2775                ACIS-S       Jan 17
        VelaX-1                ACIS-S/HETG
        SDSSJ080755.62+05563   ACIS-S
        GAMA2258819            ACIS-S
        SDSSJ081010.69+07333   ACIS-S
        NGC5506                ACIS-S/HETG  Jan 18
        Radiation Belts
        MKN421                 ACIS-S/LETG

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

All spacecraft subsystems except HRC-S continued to support nominal operations.

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