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Operations CXO Status Report

Friday 10 December 2004 9.00am EST

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

Of note this week was the approval by the Flight Director's Board of the relaxation of a recently instituted Mission Planning Guideline to disallow observations at sun pitch angles greater than 150 degrees. This constraint was put in place due to the recent concern with certain propulsion line temperatures reaching the freezing point of the spacecraft's hydrazine fuel. The decision to relax the constraint came after a detailed analysis of the margin needed to insure that the lines will never freeze. The new constraint disallows observations past 168 degrees sun pitch.

The schedule of targets for the next week is shown below and includes a series of calibration observations of the oxygen rich supernova remnant, E0102-72.

3C 191                 ACIS-S       Dec 12
Procyon                HRC-I
Radiation Belts
E0102-72 (2 obs)       ACIS-I
Radiation Belts                     Dec 13
E0102-72               ACIS-I       Dec 14
SDSS J031950.54-00     ACIS-S
cl0318-0302            ACIS-I
SDS 1321+0038          ACIS-S
MKW8                   ACIS-I
E0102-72 (2 obs)       ACIS-I       Dec 15
CXOMP J084128.3+13     ACIS-S
Radiation Belts
E0102-72               ACIS-S       Dec 16
E0102-72               ACIS-I
Abell 2029             ACIS-I
E0102-72               ACIS-I       Dec 17
PKS 2101-490           ACIS-S
E0102-72               ACIS-I
E0102-72               ACIS-S
NGC 2841               ACIS-S       Dec 18
CL0521-2530            ACIS-I
Radiation Belts
Sculptor Dwarf         ACIS-S       Dec 19
E0102-72 (3 obs)       ACIS-S
CL0521-2530            ACIS-I
PSR J2124-3358         ACIS-S
E0102-72 (2 obs)       ACIS-S       Dec 20


All spacecraft subsystems continued to support nominal operations.

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