CHIEF OBSERVER'S REPORT for Week 13
                       26-Mar-01 through 1-Apr-01 

                          A. Takeda, H. Hudson

GENERAL 

Since a naked-eye sunspot, AR9393, has made its disk passage, the 
flare activity has been quite high during the week. SXT has observed 
many flares produced around this region, including the singular
X-class flare of March 29 (see below).

SXT TECHNICAL 

No problems to report.

SXT SCIENTIFIC

For Web material see the science nuggets:

Current Week: http://isass1.solar.isas.ac.jp/sxt_co/010330.html
Index:        http://isass1.solar.isas.ac.jp/sxt_co/index.html

The newest nugget, 'Aurora seen in Palo Alto', deals with the flare. In
fact auroras were reputedly seen as far south as northern Mexico. The
nugget reminds us that this kind of geoeffectiveness can originate with
a compact, impulsive flare sometimes,

CAMPAIGNS 

We planed to participate in the Quiet Sun Camapign, on 28th and 29th March
to cooperated with SoHO/CDS, etc. However, due to the high solar activity
on those days, we canceled the special table to observe the quiet region
with ARS0 mode. Instead, we concentrated on the gorgeous active region,
AR9393.  We remain on the alert for sigmoids as a Target Of Oportunity.

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

H. Hudson returned on 29th March, shortly before the flare.

SEMINARS

No seminar this week.


                     SXT TABLE PLAN, WEEK 14
                   (1-Apr-01 through 8-Apr-01)


The CME watch campaign is scheduled from 5th to 20th April, but
the details have not been discussed yet. Otherwise the operations will be 
quite normal waiting for the appearance of a nice sigmoid as TOO.

________________________________#_______________________________

JST Day         UT Start Time      Pass   Table ID

Tuesday AM      2-APR-01 15:25     3      010402 P3 ARS1 STD*
Tuesday PM      3-APR-01 12:03     2      010403 P2 ARS1 DARK
Wednesday AM    3-APR-01 15:27     4      010403 P4 ARS1 DIFF*
Wednesday PM    4-APR-01 13:47     3      010404 P3 ARS1 STD
Thursday PM     5-APR-01 10:25     1      010405 P1 ARS1 STD+CME
Friday PM       6-APR-01 12:08     3      010406 P3 ARS1 STD+CME
Saturday PM     7-APR-01 12:10     3      010407 P3 ARS1 STD+CME

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
of the pass in question 

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.