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Operations CXO Status Report

Friday 12 April 2002 9.00am EST

During the last week the observing schedule was replanned twice to include two observations accepted as Targets Of Opportunity (TOO). The Gamma-ray Burster GRB020405 was accepted on 5 April and observed on 6 April, and the X-ray transient XTE J1751-305, also accepted on 5 April was observed on 10 April. Observations of the objects impacted by the TOO's will be observed in a later schedule.

A real-time procedures was completed on 10 April to update the on-board Ephemeris.

A press release was made on March 10 in conjunction with a NASA Space Science Update announcing observations of two neutron stars that suggest that the matter in the stars is denser that the standard models predict. One possibility is that the matter is in the form of strange quark matter. The release generated a great deal of interest in the press, and can be found at: http://chandra.harvard.edu/press/02_releases/press_041002.html.

The observing schedule for the next week is shown below and includes two constrained observations of the comet C/2002 C1.

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C/2002 C1 ACIS-S Apr 14 XTE J1908+094 ACIS-S Apr 15 Radiation Belts C/2002 C1 ACIS-S Field-142549+353248 ACIS-I Radiation Belts Apr 17 NGC 4038/NGC 4039 ACIS-S Apr 18 SGR A* ACIS-I Apr 19 1343-601 ACIS-S 0858-771 ACIS-S 1711-339 ACIS-S M 2-9 ACIS-S BR1600+0724 ACIS-S Tornado ACIS-I RX J170930.2-263927 ACIS-S Apr 20 PSS 1605+4405 ACIS-S Radiation Belts Capella (2 obs) HRC-S/LETG Field-142549+35324 ACIS-I Apr 21

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All spacecraft subsystems continued to operate nominally.

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