CHIEF OBSERVER'S REPORT for Week 39 
                       24-Sep-01 through 30-Sep-01 
 
                              L. Fletcher

GENERAL 

Solar activity was high, with the baseline flux at C2 level. There
were 12 M class flares, and one X-class flare (X2.6) on September 24th
from NOAA AR 9632. Transequatorial interconnecting loops were also
seen, and at the end of the week two slow LDEs from 9628, 9632 led to
beautiful spiny arcades.

SXT TECHNICAL 

SXT functioned without problems, no new anomalies to report

SXT SCIENTIFIC
 
For Web material see the science nuggets:
 
Current Week: http://isass1.solar.isas.ac.jp/sxt_co/010928.html
Index:        http://isass1.solar.isas.ac.jp/sxt_co/index.html
 
This week's nugget reports HXR observations of the X2.6 flare. Although
Yohkoh missed the peak of the flare due to being in night, the Czech-built
Hard X-ray Spectrometer (HXRS) observed it in multiple energy bands. The
two can be intercalibrated. Short-timescale variability in the 13-23 keV 
band of HXT was  observed in the flare rise phase.


CAMPAIGNS 

SXT did not support any campaigns this week.

For SXT plans, see:
http://isass1.solar.isas.ac.jp/sxt_co/sxt_future.html

For SXT completed campaigns, see:
http://isass1.solar.isas.ac.jp/sxt_co/sxt_catalog.html


PERSONNEL

No changes

SEMINARS

There was no seminar this week, however Boris Somov gave us a tutorial about
reconnection during an extended coffee break on Friday afternoon.



                     SXT TABLE PLAN, WEEK 40
                  (01-Oct-01 through 6-Oct-01)
 
We will be supporting Brigitte Schmieder's JOP from 3 October, so there may
be a special flare table loaded.
 
_______________________________________________________________
 
JST Day         UT Start Time      Pass        Table ID
 
Monday AM       30-SEP-01 20:18      2    010930 P2 ARS1 DFF*
Tuesday AM      01-OCT-01 21:57      3    011001 P3 ARS1 DRK*
Wednesday AM    02-OCT-01 20:13      2    011002 P2 ARS1 JOP*
Thursday AM     03-OCT-01 18:29      2    011003 P2 ARS1 JOP*
Friday AM       04-OCT-01 18:26      2    011004 P2 ARS1 JOP*
Saturday AM     05-OCT-01 18:24      2    011005 P2 ARS1 STD*
 
The date part of a table ID reflects the UT date of pass 1.
A '*' means that the UT date of pass 1 differs from the JST date
This table plan is likely to change.  Prepare for last minute changes.          

Continuing requests:
 
KSC & SSOC Tohbans: If any KSC passes are likely to be cancelled (for
example due to typhoons) or an SXT table cannot be uploaded for any
reason, please telephone and e-mail the Chief Observer immediately.
(sxt_co@isass0.solar.isas.ac.jp, copy to sxt_st@flare2.solar.isas.ac.jp).
 
KSC Tohbans: In general flare mode supersedes table upload, i.e. if a
flare is in progress please do not upload a new table, and contact the
chief observer. Normally it is OK to go ahead with the planned table
without change on the next pass, if it is available. Chief observers
should keep an eye on this.