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Operations CXO Status Report

Friday 18 February 2011 9.00am EST

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

A real-time procedure was executed on Feb 15 to reconfigure the battery reconditioning resistors to adjust the battery trickle charge currents. An associated flight software patch was uplinked to update the EPS fault detection logic on the Reconditioning Resistor Relay configuration. These changes are in response to expected efficiency drops due to aging of the solar arrays. Additional, real-time procedures were executed on Feb 15-16 to dump OBC-A memory as a follow-up to the Reconditioning Resistor Relay configuration patch. The dump will be used to update the baseline memory image maintained on the ground.

The schedule of targets for the next week is shown below

------------------------------------------
IGRJ17597-2201         HRC-I        Feb 20
IGRJ18219-1347         HRC-I
IGRJ18293-1213         HRC-I
J1840-14               ACIS-S
ACTJ0237-4939          ACIS-I
Radiation Belts                     Feb 21
NGC4472                ACIS-S
1RXSJ143157.4+37063    ACIS-S       Feb 23
HD179958               ACIS-S
Radiation Belts                     Feb 24
SN1979C                ACIS-S
NGC4649                ACIS-S
RXJ1131-1231           ACIS-S       Feb 25
IGRJ12134-6015         HRC-I        Feb 26
ACTJ0217-5245          ACIS-I
1RXSJ044549.6-57261    ACIS-S
ACTJ0707-5522          ACIS-I
Radiation Belts
1RXSJ095703.2+56313    ACIS-S       Feb 27
1FGLJ0214.1+6020       ACIS-I
M31                    HRC-I
J094646.94+392719.02   ACIS-S
SDSSJ1109+3736         ACIS-S
UrsaMinor              ACIS-S

------------------------------------------

All spacecraft subsystems continued to support nominal operations.

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