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Operations CXO Status Report

Friday 24 October 2003 12.00pm EDT

Last week the observing schedule was halted due to high radiation associated with solar flare activity. The loads were halted on Oct 24 at 9:34pm EDT through a ground command to execute the SI Safing SCS 107. This ensured that the accumulated radiation dose for ACIS remained below the allowed threshold. Loads will be re-started once radiation levels reach an acceptable level.

The observing schedule for next week is shown below and includes an observation of XTE J1810-197 that was accepted as a Target Of Opportunity.

------------------------------------------
zeta Lep               ACIS-I       Oct 26
ACIS BACKGROUND        HRC-I
Radiation Belts
WR 135                 ACIS-S       Oct 27
XTE J1810-197          HRC-I
Radiation Belts
SN 1986J               ACIS-S       Oct 28
1322+36                ACIS-S       Oct 29
FSC 10214+4724         ACIS-S       Oct 30
Radiation Belts
4C 25.40 Field         ACIS-I       Oct 31
Abell 1201             ACIS-S
FTM 0915+2418          ACIS-S
SU AUR                 ACIS-S/HETG
Radiation Belts                     Nov 2
SDSSJ080154.2+441233.9 ACIS-S

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

All spacecraft subsystems continued to operate nominally.

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