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Operations CXO Status Report

Friday 23 October 2020 9.00am EDT

During the last week the observing schedule was replanned to incorporate an observation of GRB 201015A, which was accepted as a Target of Opportunity on Oct 19. Time from a scheduled observation of Orion Nebula Cluster was impacted by the replan and will be rescheduled in a future week.

A real-time procedure was executed on Oct 18 to monitor the ramp-up of the HRC-I detector high voltage, as part of an HRC-I check-out observation of Cas A for which all science commanding was in the weekly loads. The real-time procedure and the observation ran nominally and the observation data disclosed no performance concerns. Following a review on Oct 22, the HRC-I is returned to provisional use for science observations, beginning with the load starting on Oct 26.

Additional real-time procedures were executed during each ground contact to reset the DSN Outage Dead Man Load.

A Chandra image release was issued on Oct 22 describing a study which detects the gravitational redshift phenomenon in X-rays in Chandra observations of a binary star system containing a neutron star. This system, 4U 1916-053, exhibits shifts in spectral lines consistent with the predictions of general relativity. For details see:

The schedule of targets for the next week is shown below and includes an observation of NovaRet2020, which was accepted as a Director's Discretionary Time Target of Opportunity on Oct 15.

        ARLac Checkout         HRC-S        Oct 25
        Mars                   HRC-I /LETG
        gx5-1                  ACIS-S/HETG
        MRK0896                ACIS-S       Oct 26
        Mars                   HRC-I /LETG
        HD24636                HRC-I
        MCG-5-23-16            ACIS-S/HETG
        Radiation Belts                     Oct 27
        COBRA141155.2+341510   ACIS-S
        PSZ2G141.77+14.19      ACIS-S       Oct 28
        SN2007gr               ACIS-S
        BR0351-1034            ACIS-S
        MCG-5-23-16            ACIS-S/HETG
        2MASSJ03411051+0336    ACIS-S
        UGC2608                ACIS-S       Oct 29
        GRB201015A             ACIS-S
        Radiation Belts                     Oct 30
        Abell1838              ACIS-I
        AT2019wxt              ACIS-S
        SN2014cl               ACIS-S
        NovaRet2020            HRC-I /LETG  Oct 31
        SDSSJ021930.51-05564   ACIS-S
        AT2019wxt              ACIS-S
        COBRA141155.2+341510   ACIS-S
        OrionNebulaCluster     ACIS-S/HETG  Nov  1
        Radiation Belts


All spacecraft subsystems continued to support nominal operations.

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