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Operations CXO Status Report

Friday 4 November 2005 9.00am EST

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

Chandra passed through a short duration lunar eclipse on Nov 1 with nominal power and thermal performance. The eclipse duration was 26 min 11 sec and with a maximum occultation of 44%. The solar array voltages were within the predicted range on eclipse exit. A real-time procedure was completed following the eclipse to reset on-board eclipse flag to 'medium' in preparation for the next Earth eclipse season in January.

A Chandra press release was issued on Nov 2 describing observations of the star cluster Westerlund 1 that have led to the discovery of a neutron star in the cluster, rather than a predicted intermediate mass black hole. The discovery may severely limit the range of stellar masses that lead to the formation of stellar black holes. For details see:

The schedule of targets for next week is shown below.

The Crab Nebula         ACIS-S/HETG  Nov 7
NGC 4312                ACIS-S
M84                     ACIS-S
3C 33                   ACIS-S
HD93129AB               ACIS-S/HETG  Nov 8
NGC 281                 ACIS-I
Radiation Belts
HD93129AB               ACIS-S/HETG  Nov 9
Abell 193               ACIS-S
The Crab Nebula         ACIS-S/HETG  Nov 10
HD93129AB               ACIS-S/HETG
The Crab Nebula         ACIS-S/HETG
NGC 281                 ACIS-I
Radiation Belts                      Nov 11
HD93129AB               ACIS-S/HETG  Nov 12
3C 33                   ACIS-S
NGC 281                 ACIS-I
RXJ1856.5-3754          HRC-I
Radiation Belts
NGC 4569                ACIS-S       Nov 13


All spacecraft subsystems continued to support nominal operations.

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