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Operations CXO Status Report

Friday 16 October 2026 9.00am EDT

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

A Chandra image release was issued on October 14 of the "Treble Clef," an unusually shaped radio feature. Researchers concluded that the Treble Clef likely formed in a two-stage process. First, an outburst from a supermassive black hole in the galaxy cluster's center drove clouds of charged particles and magnetic fields away at close to the speed of light. Next, the collision between the two clusters compressed or reenergized the cloud, which became brighter again in radio waves. For details, see https://chandra.si.edu/photo/2026/trebleclef/

The schedule of targets for the next week is shown below, and includes an observation of SN2026sqf, which is a follow-up to a Director's Discretionary Time Target of Opportunity accepted on Aug 27 and is coordinated with NuSTAR, and an observation of SN2016coi which was accepted as a Director's Discretionary Time Target of Opportunity on Sep 21.



------------------------------------------
        Radiation Belts                     Oct 18
        CHQJ0210+0050          ACIS-I       Oct 19
        WR21a                  ACIS-S/HETG
        CHQJ0210+0050          ACIS-I
        WR21a                  ACIS-S/HETG
        CHQJ0210+0050          ACIS-I
        WR21a                  ACIS-S/HETG
        SN2016coi              ACIS-S       Oct 20
        Radiation Belts
        V444Cyg                ACIS-S/HETG
        SDSSJ014837.63+0600    ACIS-I       Oct 21
        CMZMolecularCloud      ACIS-I
        SDSSJ014837.63+0600    ACIS-I
        CMZMolecularCloud      ACIS-I
        SDSSJ014837.63+0600    ACIS-I
        CMZMolecularCloud      ACIS-I       Oct 22
        SDSSJ014837.63+0600    ACIS-I
        WR21a                  ACIS-S/HETG
        SDSSJ014837.63+0600    ACIS-I
        Radiation Belts                     Oct 23
        SN2026sqf              ACIS-S
        BOSS0210E              ACIS-I
        [ZCA2021]BOSS1244N     ACIS-I
        BOSS0210E              ACIS-I       Oct 24
        [ZCA2021]BOSS1244N     ACIS-I
        BOSS0210E              ACIS-I
        1eRASSJ101111.1+083    ACIS-S
        GaiaDR276117304500     ACIS-S       Oct 25
        SDSSJ100207.03+1630    ACIS-S
        QSOB0229+200           ACIS-S
        Radiation Belts

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

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

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