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Operations CXO Status Report

Friday 14 February 2003 8.30am EST

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

Chandra passed through the seventh and eighth eclipses of the Spring 2003 season on 8 and 11 of Feb with nominal power and thermal performance. Real-time procedures were run following each eclipse to disable the Momentum Unload subfunction in the flight software to ensure momentum dumps remain under manual control. A procedure to clear a glitch counter that incremented during eclipse exit was also run on 11 Feb.

A real-time procedure was completed on Feb 12 to update the on-board ephemeris.

The observing schedule for next week is shown below and includes a series of Calibration observations of AR Lac with the HRC.

------------------------------------------
SDSS J104230.14+010223 ACIS-S       Feb 17
NGC 4361               ACIS-S
HS 1251+2636           ACIS-S
GEV J1825-1310         ACIS-I
MACHO-96-BLG-5         ACIS-S
SGR 1900+14            ACIS-S
RX J1914.4+2456        ACIS-S       Feb 18
Radiation Belts
RX J1914.4+2456        ACIS-S       Feb 19
NGC 6888               ACIS-S
Markarian 231          ACIS-S       Feb 20
Radiation Belts                     Feb 21
ARLac (21 obs)         HRC-S
ARLac (21 obs)         HRC-I        Feb 22
NGC 315                ACIS-S
87GB 0718+2748         ACIS-S       Feb 23
MACSJ-0911.2+1746      ACIS-I
SDSS J015650.28+005308 ACIS-S
RX J2217.9-5941        ACIS-S
V838 Mon               ACIS-S

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

All spacecraft subsystems, with the exception of MUPS thruster A-1 as noted above, continued to operate nominally.

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