16 November 1998
                                                           David McKenzie

              SXT CHIEF OBSERVER'S REPORT AND TABLE PLAN

                 CHIEF OBSERVER'S REPORT for Week 46
                       09-Nov-98 to 14-Nov-98

GENERAL

Yohkoh and SXT have performed well this week. Solar activity was
almost as high as last week.  SXT observed several compact-type flares,
and some apparent eruption events.

SXT TECHNICAL

No problems to report.  Continued planning for Leonid meteor event.
We will want to make a normal pointing update soon, either late this
week or early next week.

SXT SCIENCE

For Web material see

Current Week: http://www.solar.isas.ac.jp/sxt_co/SXTweekly.html
Current Week: http://www.solar.isas.ac.jp/sxt_co/981113.html
Index:        http://www.solar.isas.ac.jp/sxt_co/index.html

This week's Science Nugget describes repeated brightenings observed in
loop associated with a flare on 13-Nov-98.  Three brightenings were
observed approximately six minutes apart, nearly evenly spaced in time.

CAMPAIGNS

There were no coordinated campaigns this week.
 
PERSONNEL

Henry Aurass arrived for a visit; Dick Canfield returned to Montana at
the end of the week.

SEMINARS

There was no seminar this week.




                   DRAFT SXT TABLE PLAN, WEEK 47 
                      (16-Nov-98 -- 21-Nov-98)


There is no coordinated observation campaign scheduled for this week.
Yohkoh will make some special operations Tuesday in anticipation of
possible encounter with Leonid meteors.  SXT will continue to observe, 
but with some precautions to compensate for the temporary
disabling of flare mode.

________________________________#_______________________________

JST Day     	UT Start Time      Pass    Table ID

Tuesday         16-NOV-98 22:52    3      981116 P3 ARS1 DARK+LEO 
Wednesday       18-NOV-98 00:52    4      981117 P4 ARS1 STD+LEO ? 
Thursday        18-NOV-98 20:00    2      981118 P2 ARS1 STD 
Friday          19-NOV-98 20:16    2      981119 P2 ARS1 DIFF  
                19-NOV-98 23:42    4      981119 P4 ARS1 STD
Saturday        20-NOV-98 18:51    2      981120 P2 ARS1 STD

The Monday table upload was cancelled, and the Tuesday upload has been 
shifted to Pass 3, to allow time for real-time HXT HV operations in Pass 4. 
This plan may change again during the week, particularly because of possible
changes to our Leonids plan.  In particular, the Wednesday table upload
may be moved to Pass 3, if extra time is required in Pass 4 for HV actions.

Note that some Table IDs do not appear to 
match the UT start dates (Tuesday and Wednesday).  This is because of 
the convention in which the Table ID is determined by the UT date of
the first pass of the day.


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, ie 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.