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Operations CXO Status Report

Friday 29 June 2007 8.00am EDT

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

Chandra passed through the 1st and 2nd eclipses of the 2007 Summer season on Jun 24 and 26 with nominal power and thermal performance. Realtime procedures were conducted on Jun 23 and Jun 24 to set the on-board eclipse flag to short (true) for the first eclipse and back to false in preparation for the next 6 medium duration eclipses of the season.

A Chandra press release was issued on Jun 27 describing observations of the binary system neutron star Circinus X-1 that have revealed an X-ray jet blasting away from the object. The discovery is expected to help understand how neutron stars as well as black holes can generate powerful beams of relativistic particles. For further details see: http://chandra.harvard.edu/press/07_releases/press_062707.html

The schedule of targets for the next week is shown below and includes an observation of M31 coordinated with HST.

------------------------------------------
Radiation Belts                      Jul 2
1E 161348-5055         HRC-S
A2420                  ACIS-I        Jul 3
3C353                  ACIS-S
Radiation Belts                      Jul 4
M31                    ACIS-I        Jul 5
FLS1                   ACIS-I
SDSS J1231+0138        ACIS-S
SWIFT J1756.9-2508     ACIS-I 
XMMU J174716.1-281     ACIS-S        Jul 6
M4                     ACIS-S
NGC6144                ACIS-S
Radiation Belts                      Jul 7
ESO 137-006            ACIS-S        Jul 8
3C353                  ACIS-S

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

All spacecraft subsystems continued to support nominal operations.

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