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Operations CXO Status Report

Friday 27 September 2013 9.00am EDT

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

A real-time procedure was used to monitor the momentum unload that was executed from the on-board command loads on Sep 24; the unload performance was nominal.

A Chandra press release was issued on Sep 24 as a NASA press release describing observations of M60-UCD1, a type of “ultra-compact dwarf galaxy”. M60-UCD1 may be the densest galaxy in the nearby Universe; this galaxy weighs more than 200 million suns, over half of which is concentrated within a radius of just 80 light years. The density of stars in that region is 15,000 times greater than found in Earth's neighborhood in the Milky Way. For details see: http://chandra.si.edu/press/13_releases/press_092413.html

A Chandra image release was issued on Sep 26 describing observations of the Neutron star IGR J18245-2452. IGR J18245 displays behaviors of both a "low-mass X-ray binary" and a "millisecond pulsar". X-ray and radio observations were used to supply evidence for this never-before-seen transition between these two states. For details see: http://chandra.si.edu/photo/2013/igr/

The schedule of targets for the next week is shown below and includes and observation of GRB130831A, which was accepted as a Director's Discretionary Time TOO on Sep 9, an observation of M15, which was accepted as a Target of Opportunity on Sep 13, and an observation of Sgr A coordinated with the EVLA and XMM.



------------------------------------------
        HESSJ1809-193          ACIS-I       Sep 29
        Radiation Belts                     Sep 30
        G337.09-25.97          ACIS-I
        RXJ1856.5-3754         HRC-S/LETG   Oct  1
        Q2237+0305             ACIS-S
        HESSJ1809-193          ACIS-I
        3C340                  ACIS-S       Oct  2
        PGC3091110             ACIS-S
        Radiation Belts                     Oct  3
        GRB130831A             ACIS-S
        G121.11+57.01          ACIS-I
        1RXSJ180431.1-27393    ACIS-I
        hrc-1                  HRC-I
        hrc-2                  HRC-I        Oct  4
        A2597                  ACIS-I
        SgrA                   ACIS-S
        3C337                  ACIS-S       Oct  5
        SDSS1004+4112          ACIS-S
        Radiation Belts
        DeepField09            ACIS-I       Oct  6
        SN2008gm               ACIS-S
        M15                    HRC-S        Oct  7

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

All spacecraft subsystems continued to support nominal operations.

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