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Operations CXO Status Report

Friday 22 December 2017 9.00am EST

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

Preparations are complete for the winter 2017/18 eclipse season; the season contains six eclipses and runs from Dec 22 to Jan 5. Real-time procedures were executed on Dec 21 to prepare for the first eclipse: one to activate SCS 29 and one to dump and clear the EPS glitch counters.

A Chandra press release was issued on Dec 19 describing observations of the Perseus cluster. New analysis shows that absorption of X-rays at 3.5 keV is detected when observing the region surrounding the supermassive black hole at the center of Perseus. This suggests that dark matter particles in the cluster are both absorbing and emitting X-rays at that energy. For details see:

The schedule of targets for the next two weeks is shown below and includes observations of NGC 3516 coordinated with NuSTAR, observations of 3C 111 coordinated with NuSTAR and HST, an observation of GM Aur coordinated with HST and the VLA, observations of DM Tau, which was accepted as a Director's Discretionary Time Target of Opportunity on Nov 22, an observation of MAXI J1535-571, which was accepted as a Target of Opportunity on Dec 12, and an observation of eMACSJ0324.0+2421, which was accepted as a Director's Discretionary Time Target of Opportunity on Nov 6.

        Radiation Belts
        Luyten'sStar           ACIS-S
        SDSSJ091815.96+2022    ACIS-S       Dec 25
        Radiation Belts                     Dec 26
        SDSSJ165913.23+2101    ACIS-S
        NGC3516                HRC-S /LETG
        3C111                  ACIS-S
        RCW89                  ACIS-S
        DMTau                  ACIS-S       Dec 27
        HLTau                  ACIS-S
        Radiation Belts                     Dec 28
        J100348.65+450457.7    ACIS-S
        3C111                  ACIS-S       Dec 29
        NGC3516                HRC-S /LETG
        3C111                  ACIS-S
        NGC3516                HRC-S /LETG  Dec 30
        GALEXJ085642.1+1231    ACIS-S
        Radiation Belts                     Dec 31
        SDSSJ094004.80+0526    ACIS-S
        MAXIJ1535-571          ACIS-S/HETG
        4U1626-67              ACIS-S/HETG
        J1542+1020             ACIS-S       Jan  1
        J1045+3519             ACIS-S
        SDSSJ0842+1218         ACIS-S
        J1217+0234             ACIS-S
        ClGJ092642+174110      ACIS-I
        eMACSJ0324.0+2421      ACIS-I       Jan  2
        Radiation Belts
        2MASXJ08445829+3056    ACIS-S       Jan  3
        SN2010jl               ACIS-S
        4U1626-67              ACIS-S/HETG
        M87                    ACIS-S       Jan  4
        J0024+2450             ACIS-S
        GMAur                  ACIS-S
        J1013+3427             ACIS-S
        DMTau                  ACIS-S
        SN2005ip               ACIS-S
        Radiation Belts                     Jan  5
        RCW89                  ACIS-S
        NVSSJ145459+110928     ACIS-S       Jan  6
        ClGJ081008+351631      ACIS-I
        ClGJ085007+293256      ACIS-I
        HLTau                  ACIS-S
        J1045+3519             ACIS-S
        J094244.23+411019.3    ACIS-S       Jan  7
        Radiation Belts


All spacecraft subsystems continued to support nominal operations.

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