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Operations CXO Status Report

Friday 13 January 2006 8.30am EST

During the last week the observing schedule was replanned to include an observation of GRB060108 that was accepted as a 1 day turn-around Target Of Opportunity (TOO) on Jan 10. Loads were replanned and uplinked on Jan 11. Observations of NGC 2552 and Polaris were impacted by the TOO and will be rescheduled in a later load.

Chandra passed through the first three eclipses of the 2006 winter season on January 6, 9 and 11 with nominal power and thermal performance. The remaining eclipses of the season will occur on Jan 14 and 17.

A real-time procedure was conducted on Jan 12 to disable the sun position monitor. The monitor was enabled due to the relative timing of commanding in the TOO loads and on-board commanding following the Jan 11 eclipse. In the event the timing condition arises in future schedules, adjustments will be made to ensure that the monitor is not enabled.

A Chandra press release was issued on Jan 10 describing observations of elliptical galaxies that reveal unexpected disruptive explosive activity associated with the central black holes. For details see:

The schedule of targets for next week is shown below and includes an observation of 3C279 coordinated with INTEGRAL.

GRB051221               ACIS-S       Jan 15
Radiation Belts                      Jan 16
3C 279                  ACIS-S/LETG  Jan 17
RXC J1100.8+1033        ACIS-S
Abell754-P1             ACIS-I
Abell754-P4             ACIS-I
PSR J0538+2817          ACIS-I       Jan 18
YY Draconis             ACIS-S/HETG
4U 1954+319             HRC-I        Jan 19
Radiation Belts
YY Draconis             ACIS-S/HETG
PSR J0538+2817          ACIS-I       Jan 20
Sh2-271                 ACIS-I       Jan 21
YY Draconis             ACIS-S/HETG
30 Doradus              ACIS-I
Radiation Belts
30 Doradus              ACIS-I       Jan 22


All spacecraft subsystems continued to support nominal operations.

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