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Operations CXO Status Report

Friday 18 November 2011 9.00am EST

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

A flight software patch was uplinked on Nov 17 to update the telescope forward thermal enclosure radiator and vent maximum temperature health-check threshold. The update is in response to increasing temperatures due to degradation of the Observatory's thermal covers during the mission and higher heating from the Earth due to a decreasing perigee altitude.

A Chandra press release was issued on Nov 17 describing observations of the black hole Cygnus X-1 with Chandra and radio, optical and other X-ray telescopes. Cygnus X-1 is a black hole about 15 times the mass of the Sun in orbit with a massive blue companion star. The combined data have revealed the spin, mass, and distance of this black hole more precisely than ever before. For details see:

The schedule of targets for the next week is shown below and includes an observation of GRB 111117A, which was accepted as a Target of Opportunity on Nov 17.

SDSSJ0140-0839         ACIS-S       Nov 20
         IGRJ18490-0000         HRC-S
         PGC31499               ACIS-S
         GRB111117A             ACIS-S
         Radiation Belts
         M31                    HRC-I        Nov 21
         M37                    ACIS-I
         Radiation Belts                     Nov 23
         ACTJ0215-5212          ACIS-I
         NGC6781                ACIS-S       Nov 24
         SPT-CLJ2035-5251       ACIS-I
         M31BHXN                ACIS-I
         SDSSJ1639+2824         ACIS-S
         B1422+231              ACIS-S
         1E1207.4-5209          ACIS-S       Nov 25
         HD22470                ACIS-S
         SPT-CLJ2031-4037       ACIS-I
         NGC4292                ACIS-S
         A1914_Field4           ACIS-I
         Radiation Belts                     Nov 26
         SGR0418+5729           ACIS-S
         G12-11                 ACIS-I       Nov 27
         G12-18                 ACIS-I
         Crab                   ACIS-S
         SDSSJ0303-0023         ACIS-S
         3c67                   ACIS-S
         J0023+09               ACIS-S       Nov 28


All spacecraft subsystems continued to support nominal operations.

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