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Operations CXO Status Report

Friday 31 January 2003 7.00am EST

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

Chandra passed through the second and third eclipses of the Spring 2003 season on 26 and 28 Jan with nominal power and thermal performance. A real-time procedure was run following the eclipse on Jan 28 to disable the Momentum Unload subfunction in the flight software to ensure momentum dumps remain under manual control.

A real-time procedure was completed on 25 Jan to collect dump data at a variety of data rates with deconvolutional encoding disabled. The data will be used as part of an investigation into absolute timing accuracy.

The observing schedule for next week is shown below and includes an observation of the Earth.

Radiation Belts Feb 2 F23365+3604 ACIS-S Feb 3 First J074402+514917 ACIS-S Markarian 231 ACIS-S NGC 4555 ACIS-S Feb 4 M87 ACIS-S NGC 4325 Group ACIS-S SDSS J121415.17+0055 ACIS-S XTE J1859+226 ACIS-S Radiation Belts Feb 5 Betelgeuse (4 obs) HRC-S Betelgeuse HRC-I Feb 6 Betelgeuse ACIS-S Betelgeuse ACIS-I NGC 288 ACIS-S Earth HRC-I NGC 1850 A/B ACIS-S 2S1711-339 ACIS-S Feb 7 2MASS123016+030255 ACIS-S MACS-J1149.5+2223 ACIS-I NGC 3718 ACIS-S Radiation Belts NGC 4565 ACIS-S Feb 8 PSR J1509-5850 ACIS-S Feb 9


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

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