Chandra Operations CXO Status Report 14 June 2002

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

A real-time procedures was completed on 13 June to update the on-board Ephemeris.

Planning is complete for a check of the bright earth limb limitation with the aspect camera during perigee passage on June 17. The check is part of an assessment of the current limitation that the aspect camera not acquire stars within 20 degrees of the bright earth. A reduction of the constraint will ease scheduling both during perigee passage and for science observing.

The Chandra cycle-4 peer review will be held next week in Boston during June 18-20. The panels will review approximately 800 proposals that will provide targets for observations starting in Nov/Dec.

A new version of the Off-Line System (OFLS) ground software began use operationally on June 12. Version 9.3 will allow use of a new aspect star catalog planned for installation next month.

The observing schedule for the next week is shown below and includes an observation of Alpha Bootis coordinated with the Hubble Space Telescope.

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W51                     ACIS-I       Jun 16
Radiation Belts                      Jun 17
W51                     ACIS-I
PSS1443+5856            ACIS-S
M82                     ACIS-S
Alpha Bootis            HRC-I
HEN2-90                 ACIS-S       Jun 19
XTE J1550-564           ACIS-S
0858-771                ACIS-S
E0102-72.3 (3 obs)      ACIS-S
A3158                   ACIS-I
Radiation Belts                      Jun 20
HD169978                ACIS-I
E0102-72.3 (8 obs)      ACIS-I
A3158                   ACIS-I       Jun 21
AX J0440.0-4534         ACIS-S       Jun 22
E0102-72.3 (4 obs)      ACIS-S
XMM - Field 1           ACIS-I
Radiation Belts
XMM - Field 2           ACIS-I       Jun 23
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All spacecraft subsystems continued to operate nominally.