Operations CXO Status Report

Friday 21 December 2001 9.00am EST

During the last week, Chandra completed the observing schedule as planned. A realtime procedure was completed on 17 Dec to swap from SSR-B to SSR-A. SSR-A had become full following a series of missed DSN passes caused by technical problems at the sites. Recording automatically switched to SSR-B to avoid data loss. All the data from both recorders were recovered at the next and subsequent passes however, thus maintaining the mission record of no data loss due to over-filled recorders. A Chandra press release was issued on 19 Dec describing the "aftermath of a titanic explosion" in the elliptical galaxy NGC 4636. For further details and images showing the 25,000 light year symmetric arcs resulting from the explosion, see: http://chandra.harvard.edu/press/01_releases/press_121901.html. The mission planning team completed work on the 2-week schedule to span the holiday period. The schedule of observations is shown below and includes a series of grating observations of Comet Linear, and an observation of Alpha Tauri coordinated with the Hubble Space Telescope.

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Q1245-197               ACIS-S       Dec 23
PSS0957+3308            ACIS-S
CHVC125                 ACIS-S
A2294                   ACIS-I       Dec 24
Cygnus Loop NE2         ACIS-S
Radiation Belts                      Dec 25
Beta Ceti               HRC-S/LETG
G78.2+2.1               ACIS-I       Dec 26
CYG X-1                 ACIS-S/HETG  Dec 27
A168                    ACIS-I
Radiation Belts
HD 37022                ACIS-S/HETG  Dec 28
Alpha Tauri             HRC-I
SDSS020651+121624       ACIS-S       Dec 29
Vela PWN                ACIS-S
NGC 4038/NGC 4039       ACIS-S
Radiation Belts                      Dec 30
Comet Linear (4 obs)    ACIS-S/LETG  Dec 31
PSS0134+3307            ACIS-S
NGC 4051                HRC-S/LETG
HZ43 (3 obs)            HRC-S/LETG   Jan 1
Radiation Belts                      Jan 2
VW CEP                  HRC-S/LETG
TXS 0145+386            ACIS-I       Jan 3
Radiation Belts                      Jan 4
A168                    ACIS-I       Jan 5
1E1207.4-5209           ACIS-S
1RXSJ161411.3-630657    ACIS-I       Jan 6
HD123445                ACIS-I
Q1328+254               ACIS-S
PSS 1539+4312           ACIS-S
RX J1605+3249           ACIS-I

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All spacecraft subsystems continued to operate nominally.

The next report is planned for January 4 following the holiday. A Happy Holiday and New Year to everyone from the entire Chandra Team!

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