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Friday 17 May 2002 11.00pm EDT
| During the last week the observing schedule was replanned to include an observation of the X-ray transient XTE J0929-314 that was accepted as a Target Of Opportunity (TOO) on 10 May. Observations of 0858-771, 1343-601, 0903-573 impacted by the TOO and will be rescheduled in a later load.
Chandra passed through the a 4% lunar eclipse on 11 May with nominal power and thermal performance. The measured temperature decrease of the solar arrays was 2.5 degrees F and compared well with the predicted value of 3 degrees F. A software patch to increase two glitch counter values was uplinked on May 14 to mitigate a subtle timing condition. The condition has twice caused the EPHIN hardware failure flag to be erroneously set resulting in a loss of science through execution of SCS 107. Both the A- and B-side patches were uplinked. The observing schedule for the next week is shown below and includes two full orbit observations of Sgr A*. |
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HS 1939+7000 ACIS-S May 19 Radiation Belts AQL X-1 ACIS-S NGC 6482 ACIS-S 1828+487 ACIS-S HS 1824+6507 ACIS-S Abell 2124 ACIS-S RX J1308+2127 ACIS-I 1AXG J110713-1839 ACIS-I May 21 NGC 5102 ACIS-S 1655-776 ACIS-S SMC FIELD 7 ACIS-I SN2001IG ACIS-S Radiation Belts May 22 Sgr A* ACIS-I Radiation Belts May 24 Sgr A* ACIS-I May 25
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All spacecraft subsystems continued to operate nominally.
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Revised: July 08, 2022