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Operations CXO Status Report

Friday 8 February 2008 8.00am EST

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

Chandra passed through a 30 minute lunar eclipse on Feb 6 with nominal power and thermal performance. A real-time procedure was run to uplink a contingency command load to activate a set of load heaters prior to the eclipse after a review of the onboard loads indicated that the commanding had not been included as planned. A review is underway to understand why the commanding was not included and identify future corrective action.

Real time procedures were executed on Feb 5 and 6 to set the short eclipse flag to "short" prior to the eclipse and then back to the default "medium" setting following the eclipse. SCS-29 was also disabled on Feb 6 following the eclipse.

A real-time procedure was executed on Feb 7 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer.

A Chandra image release was issued on Feb 5 of the elliptical galaxy NGC 1132. The combined Chandra and Hubble image shows the hot, diffuse gas detected by Chandra and a giant foreground elliptical galaxy, plus numerous dwarf galaxies in its neighborhood, and many much more distant background galaxies detected by Hubble. For details see:

The schedule of targets for the next week is shown below and includes an observation of M87 coordinated with HST.

J1020+4831 4C+48.2     ACIS-S       Feb 11
SDSS J1004+4231        ACIS-S
SDSS J085641.58+42     ACIS-S
IGR J07295-1329        ACIS-I
RXCJ1023.8-2715        ACIS-S
1062                   ACIS-S       Feb 12
1661                   ACIS-S
759                    ACIS-S
1279                   ACIS-S
1030                   ACIS-S
355                    ACIS-S
Radiation Belts
Carina South Pilla     ACIS-I       Feb 13
NGC 4261               ACIS-S
654                    ACIS-S       Feb 14
369                    ACIS-S
1475                   ACIS-S       Feb 15
NGC 4571               ACIS-S
IGR J18259-0706        ACIS-S
IGR J18256-1035        ACIS-S
IGR J18214-1318        ACIS-S
Radiation Belts
Carina South Pilla     ACIS-I       Feb 16
UGC 4203               ACIS-S
UGC 4203               ACIS-S
UGC 4203               ACIS-S
Carina South Pilla     ACIS-I
IGR J18193-2542        ACIS-S
AX J183607-0756        ACIS-S       Feb 17
AX J181705-1607        ACIS-S
AX J183518-0754        HRC-I
IGR J18490-0000        HRC-I
IGR J18134-1636        ACIS-I
M87                    ACIS-S
NGC 4736               ACIS-I
3CRR 270.1             ACIS-S
3CRR 266               ACIS-S


All spacecraft subsystems continued to support nominal operations.

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