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Operations CXO Status Report

Friday 1 May 2009 9.00am EDT

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

A real-time procedure was conducted on 28 April to uplink a flight software patch to update the telescope secondary thermal data base. The update allows for the contingency situation of the spacecraft being in prolonged Normal Sun Mode attitude prior to a short eclipse. The update enables an increased power-drain on the batteries to prevent an over-voltage condition on short-eclipse exit.

A Chandra image release was issued on 29 April of a region near the center of our Galaxy. This deep observation has resolved a long-standing mystery about the X-ray glow along the plane of the Galaxy. The glow in the region covered by the Chandra image was discovered to be caused by hundreds of point-like X- ray sources, implying that the glow along the plane of the Galaxy is due to millions of such sources. For detail see: http://chandra.harvard.edu/photo/2009/gridge/

The schedule of targets for the next week is shown below and includes an observation of IM Lup coordinated with the VLT.

------------------------------------------
Radiation Belts                    May  3
SPT-CL0547-5345        ACIS-I      May  4
IM Lup                 ACIS-S/HETG
Radiation Belts                    May  6
1834+612               ACIS-S      May  7
3C326                  ACIS-I
cl0334-3900            ACIS-I
CepBsub-cluster        ACIS-I
V454Cepsub-cluster     ACIS-I      May  8
NGC1961 (2 obs)        ACIS-I
Radiation Belts                    May  9
GRB090423              ACIS-S
3C326                  ACIS-I      May 10
CSS080928              ACIS-S
Cas A                  ACIS-I
Cas A                  ACIS-S
Vega                   HRC-I
Vega (3 obs)           HRC-S
GRB090423              ACIS-S
NGC1961 (2 obs)        ACIS-I
GRB090417B             ACIS-S      May 11

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

All spacecraft subsystems continued to support nominal operations.

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