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Operations CXO Status Report

Friday 25 June 2005 8.00am EDT

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

A real-time procedure was completed on 17 Jun to uplink the corrected software patch to modify the Stored Command Sequences (SCS) 107 and 84. The patch provides the capability to transition to Normal Sun Mode (NSM) following execution of the Science Instrument safing actions (SCS 107) in response to a high radiation event. The capability will be used to ensure a favorable thermal attitude for cases when stopping the loads would violate a new propulsion line thermal constraint. A second realtime procedure was completed on Jun 17 to update the onboard ephemeris.

Of note this week was the successful completion of the Cycle 7 Peer Review held in Boston, Jun 21-23.

The schedule of targets for the next week is shown below and includes observations of M81 coordinated with ground observations.

------------------------------------------
Radiation Belts                     Jun 27
X1908+375              ACIS-S/HETG
HD 147010              ACIS-S
SGR 1627-41            ACIS-S       Jun 28
MACSJ2046.0-3430       ACIS-I
MACS0011.7-1523        ACIS-I
PSR B1937+21           ACIS-S
M81                    ACIS-S       Jun 29
Radiation Belts
9P/Tempel 1 (5 obs)    ACIS-S       Jun 30
GC-1                   ACIS-I
IGR J11085-5100        ACIS-I
NGC 3351               ACIS-S       Jul 1
Q0906+6930             ACIS-S
W3 North               ACIS-I
Radiation Belts                     Jul 1
M81                    ACIS-S
NGC 6231               ACIS-I       Jul 3

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

All spacecraft subsystems continued to support nominal operations.

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