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Operations CXO Status Report

Friday 13 November 2026 9.00am EST

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

A real-time procedure was executed on Nov 12 to re-enable the on-board HRC 15V low-voltage control and safing monitor. The monitor tripped and safed the HRC instrument on Nov 9 due to a thermal limit violation. The trip occurred at the very end of the observation and less than 2 minutes of science time was lost.

A Chandra press and image release was issued on Nov 9 describing observations of AT 2016blu. This is a luminous blue variable with a compact companion in the spiral galaxy NGC 4559. An X-ray outburst from this object was observed by Chandra in March 2026. The best explanation for the outburst is that material from the star is falling onto a neutron star or black hole during the closest approach in their elliptical orbit around one another. For details, see https://chandra.si.edu/press/26_releases/press_110926.html

The schedule of targets for the next week is shown below, and includes an observation of GaiaDR3 234264462976, which was accepted as a Director's Discretionary Time Target of Opportunity on Oct 27.



------------------------------------------
        Radiation Belts                     Nov 15
        2MASXJ03322424+1523    ACIS-S
        SPT-SJ205239-5611.9    ACIS-S
        CHQJ0210+0050          ACIS-I
        GaiaDR3234264462976    ACIS-S
        Jupiter                HRC-S /LETG
        UGC02905               ACIS-I       Nov 17
        ORC1                   ACIS-I
        ClG0238.3+2005         ACIS-I
        ORC1                   ACIS-I
        ClG0238.3+2005         ACIS-I
        SPT-SJ205239-5611.9    ACIS-S
        ClG0238.3+2005         ACIS-I       Nov 18
        SPT-SJ205239-5611.9    ACIS-S
        Radiation Belts
        ClG0238.3+2005         ACIS-I
        TYC6386-326-1          ACIS-S       Nov 19
        ClG0238.3+2005         ACIS-I
        HZ43                   HRC-S /LETG
        ClG0238.3+2005         ACIS-I
        SN2004ch               ACIS-S
        CHQJ0210+0050          ACIS-I       Nov 20
        PKS_2004m447_s4        ACIS-S
        CHQJ0210+0050          ACIS-I
        2RXSJ225817.2-41495    ACIS-S
        CHQJ0210+0050          ACIS-I
        Radiation Belts                     Nov 21
        PSZ2G151.62+54.78      ACIS-S
        CHQJ0210+0050          ACIS-I
        PSRJ1101-6101          ACIS-I
        4C+10.08               ACIS-S
        CTS61                  ACIS-S       Nov 22
        Mrk595                 ACIS-S
        2RXSJ182957.4-57311    ACIS-S
        GaiaDR213434421479     ACIS-S

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

All spacecraft subsystems continued to support nominal operations.

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