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Operations CXO Status Report

Friday 29 July 2008 8.00am EDT

During the last week the observing schedule was replanned to include a 40 Ks observation of the source SGR 0501+4516 that was accepted as a fast turn-around Target Of Opportunity (TOO) on Aug 22. Loads were replanned and uplinked on Aug 23. Observations of SDSS J0148+0001, XTE J1701-407 and Abell 2187 were impacted by the TOO and will be rescheduled in a later load.

A Chandra image release was issued on Aug 27 of the galaxy cluster MACS J0025.4-1222. Like the Bullet Cluster this cluster shows a clear separation between dark and ordinary matter. This helps answer a crucial question about whether dark matter interacts with itself in ways other than via gravitational forces. For details see:

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

VPuppis                HRC-I        Sep 1
2345-167               ACIS-S
HE0047-1756            ACIS-S
M31                    ACIS-I
NGC7673                ACIS-S
AR Lac (21 obs)        HRC-S        Sep 2
Radiation Belts
Carina East            ACIS-I       Sep 3
AXJ1820.5-1434         ACIS-I
Ark564                 ACIS-S/HETG
Radiation Belts                     Sep 5
Carina East            ACIS-I
AXJ1740.1-2847         ACIS-I       Sep 6
Ark564                 ACIS-S/HETG
AR Lac (21 obs)        HRC-I        Sep 7


All spacecraft subsystems continued to support nominal operations.

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