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Operations CXO Status Report

Friday 17 June 2011 9.00am EDT

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

Real-time procedures were executed on Jun 10 to disable SCS-29, which was enabled by the unexpected eclipse detection during the penumbral eclipse on Jun 9, and to dump and clear the EPS glitch counters as a post-eclipse season action. A real-time procedure was executed on Jun 14 to uplink a flight software patch that updates duration of the long move for LETG retraction. This update is to prevent driving the LETG into the bumper before the end of the large move. Additional real-time procedures were executed on June 14-15 to dump OBC-A memory as a follow-up to the LETG long-move duration patch. The dump will be used to update the baseline memory image maintained on the ground.

A Chandra press release was issued on June 15 as a NASA press release and briefing describing results from the Chandra Deep Field South. The deepest X-ray image of the sky shows that black holes are aggressively growing by 800 million years after the Big Bang. These black holes are growing in tandem with the galaxies in which they reside. The new results show there were at least 30 million black holes before the Universe was a billion years old. For details see:

The schedule of targets for the next week is shown below and includes observations of GRS 1915+105, which was accepted as a Target of Opportunity (TOO) on Jun 10 and is coordinated with EVLA, Gemini, and RXTE, SwiftJ2058, which was accepted as a Director's Discretionary Time TOO on Jun 13, SN 2011by, which was accepted as a TOO on Jun 8, and G1 coordinated with the VLA.

J142123.99+463317.88   ACIS-S       Jun 20
Radiation Belts
SLJ1335.7+3731         ACIS-I
GRS1915+105            ACIS-S/HETG  Jun 21
SwiftJ2058             HRC-I        Jun 22
SN2011by               ACIS-S
CentaurusA             ACIS-I
IGRJ15293-5609         ACIS-I
Radiation Belts                     Jun 23
MACSJ0553.4-3342       ACIS-I
muCol                  ACIS-S/LETG  Jun 24
1FGLJ0147.4+1547       ACIS-I       Jun 25
NGC7009                ACIS-S
Radiation Belts
PGC3853                ACIS-S       Jun 26
RXCJ0605_Field3        ACIS-I
G1                     ACIS-S
muCol                  ACIS-S/LETG


All spacecraft subsystems continued to support nominal operations.

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