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Operations CXO Status Report

Friday 12 December 2003 7.00am EST

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

A real-time procedure was completed on 9 Dec to compare the expected and observed HRC anticoincident shield rates. The procedure was completed as part of planning for the possible use of the HRC as a backup radiation detector.

A Chandra press release was issued on Dec 8 describing an image of the elliptical galaxy NGC 4261 that reveals dozens of black holes and neutron stars strung out across the galaxy. The structure, which is not apparent from the optical image of the galaxy, is thought to be the remains of a collision between galaxies a few billion years ago. For details see:http://chandra.harvard.edu/press/03_releases/press_120803.html .

The observing schedule for the next week is shown below and includes a series of calibration observations of E0102-72, an observation of NGC 5408 coordinated with the VLA, and an observation of the Earth during which Chandra will be aimed at a fixed point and the Earth's polar cusp will drift through the HRC-I field of view.

------------------------------------------
Radiation Belts                     Dec 14
E0102-72 (7 obs)        ACIS-S      Dec 15
E0102-72                ACIS-I
Earth                   HRC-I
PMN J0324-2918          ACIS-S      Dec 16
LBQS 2111-4335          ACIS-S
PKS2155-304             ACIS-S/LETG
E0102-72 (2 obs)        ACIS-I
Radiation Belts
CLASS B0712+472         ACIS-S      Dec 17
F1610-1418              ACIS-S      Dec 18
E0102-72 (5 obs)        ACIS-I
Radiation Belts                     Dec 19
B3 1614+473             ACIS-S      Dec 20
HZ43                    HRC-I/LETG
NGC 5408 ULX            ACIS-S
HZ43                    HRC-S/LETG
W 135                   ACIS-S
H2106-099               HRC-S/LETG
E0102-72                ACIS-I      Dec 22

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

All spacecraft subsystems continued to support nominal operations.

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