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Operations CXO Status Report

Friday 21 March 2003 7.00am EST

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

Last week we started collecting data from the HRC anti-coincidence shield at a lower than normal HV level during times when the HRC is not the observing instrument. These measurements are being performed as part of a study of the operations and flight software changes that would be necessary in order to use the HRC anti-coincidence shield to supplement or replace the EPHIN in our autonomous radiation protection system.

Of note last week was the Chandra Cycle 5 proposal deadline at 7pm EST on March 14. A total of 788 proposals were received and the submission process proceeded smoothly.

The observing schedule for next week is shown below and is largely devoted to a raster of over 60 observations of an NOAO field.

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2MASS150706-122516 ACIS-S Mar 23 HD134946 ACIS-I SGR 1627-41 ACIS-S SN 2003BG ACIS-S Mar 24 Radiation Belts Mar 25 IRAS04392-0123 ACIS-I B2 0920+31B ACIS-S FIRST J0941+4121 ACIS-S NOAO Field (23 obs) ACIS-I Mar 26 Radiation Belts Mar 27 NOAO Field (30 obs) ACIS-I Mar 28 Radiation Belts Mar 30 NOAO Field (9 obs) ACIS-I

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

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