9 October 1999
                                                             D. McKenzie
							        B. Handy
							       H. Hudson
 
                   CHIEF OBSERVER'S REPORT for Week 41
                        4-Oct-99 to 9-Oct-99


GENERAL

Solar activity has remained low all week; several C-class flares
were recorded, but the X-ray baseline is still in the mid- to high-B range.

SXT TECHNICAL 

The instrument continued to perform well all week, no new problems to
report.

For Web material see

Current Week: http://isass1.solar.isas.ac.jp/sxt_co/991008.html
Index:        http://isass1.solar.isas.ac.jp/sxt_co/index.html

This week's science nugget describes a long-lived loop which appeared dark
in the X-ray images.

CAMPAIGNS

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

Brian Handy returned to Montana, and David McKenzie arrived at ISAS.


SEMINARS

There was no seminar this week.



                       SXT TABLE PLAN, WEEK 42 
                       (11-Oct-99 to 16-Oct-99)

A mostly standard plan this week.  The MEDOC campaign JOP017 re-starts
this week (previously run in May 1999), so we will try to make some
supporting observations, if activity permits.  Also if solar activity
permits, we may try again to observe some of the transequatorial
interconnecting loops. 

________________________________#_______________________________

JST Day         UT Start Time      Pass   Table ID

Monday		11-Oct-99 07:07    1      991011 P1 ARS1 STD
Tuesday         12-Oct-99 09:02    2      991012 P2 ARS1 DARKCAL
Wednesday       13-Oct-99 05:51    1      991013 P1 ARS0 DIFF+IL
Wednesday       13-Oct-99 10:59    4      991013 P4 ARS1 STD
Thursday        14-Oct-99 09:29    3      991014 P3 ARS1 STD
Friday          15-Oct-99 08:00    3      991014 P3 ARS1 STD
Saturday        16-Oct-99 04:48    1      991015 P1 ARS1 STD


This plan is subject to change.

Continuing requests:

KSC & SSOC Tohbans: If any KSC passes are likely to be cancelled (for
example due to a typhoon) or an SXT table cannot be uploaded for some
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).

SSOC Tohban: On the weekly visible diagram, please mark the official
five passes first and then cross out those passes that will be given to
other satellites.  That way we can keep the numbering straight in the
Yohkoh software system.

SSOC Tohban: SXT operations do not currently include terminator off-
pointing. It is unnecessary this week to ask the SXT Chief Observer
for terminator off-pointing information.

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.