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Operations CXO Status Report

Friday 7 January 2005 9.00am EST

Happy New Year from the Chandra team.

During the last two weeks Chandra completed the observing schedule as planned.

The IEPHIN instrument exhibited two cases of anomalous behavior during the last two weeks during periods of elevated operating temperature. The power supply voltage dropped as it became current limited due to the high temperature and returned to its nominal value once the unit cooled following a maneuver to a new attitude. An adjustment will be made to the thermal threshold used during mission planning in order to reduce the number of future occurrences.

A Chandra press release was made on Jan 5 describing observations of the galaxy cluster MS 0735.6+7421 that indicate enormous eruptions from the central supermassive black hole that have produced associated cavities or bubbles. The eruptions are considered the most powerful ever observed. For details see:

The schedule of targets for the next week is shown below.

mu Aur                 ACIS-I       Jan 9
M3                     ACIS-S
SDSS J1048+4637        ACIS-S
M1-92                  ACIS-S
cl1120+4318            ACIS-I       Jan 10
Radiation Belts
E0102-72 (3 obs)       ACIS-I       Jan 11
NGC 45                 ACIS-S
CXOU J061705.3+222     ACIS-S
HCG 37                 ACIS-S       Jan 12
SNR1987A               ACIS-S
NGC 45                 ACIS-S
IGR J00291+5934        ACIS-S
Radiation Belts
HCG 97                 ACIS-S       Jan 13
CXOMP J084128.3+1311   ACIS-S
SDSS 0903+5028         ACIS-S
NGC 45                 ACIS-S       Jan 15


All spacecraft subsystems continued to support nominal operations.

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