January 22, 2000 
                                                           D. McKenzie 


 
                   CHIEF OBSERVER'S REPORT for Week 04 
                       17-Jan-00 through 22-Jan-00 


GENERAL 

Activity hovered near the GOES C1 level, with three M flares during the
week.  Unfortunately, none of the M flares were in view of the Flare
Genesis Experiment.  The balloon has completed about 3/4 of its trek,
with occasional computer problems.  


SXT TECHNICAL 

Y2K bugs cleared up after Monday, and no new problems have cropped up in
the data systems.  The CCD has developed a streak artifact on the west
limb, due to overexposure.  Factors contributing to the overexposure
include the dedicated pointing to the Flare Genesis target, and probably
NOT the SEU of last weekend.  Extra dark-FFIs have been inserted into the
QT/Hi table to monitor the fading of the artifact. 


For Web material see

Current Week: http://isass1.solar.isas.ac.jp/sxt_co/000121.html
Index:        http://isass1.solar.isas.ac.jp/sxt_co/index.html

This week's Nugget is a followup to one written last century: Motions in
an M flare, nugget started 22-Jan-99, finished 22-Jan-00.

CAMPAIGNS 

Flare Genesis support will continue for most of this week;
weaker-than-expected winds have led to longer-than-expected campaign.

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 left Monday for the Whole Sun Month workshop.

SEMINARS
There was no seminar this week.





                                                    January 21, 2000 
                                                         D. McKenzie 
                                                       

                                
                       SXT TABLE PLAN, WEEK 5
                      (24-Jan-00 to 28-Jan-00)
                               

The Flare Genesis telescope is still functioning, and we will continue
to support; if the mission ends before Friday then we will return to 
standard operations.  We have only one KSC pass on Wednesday, so we will
not attempt a table upload.  We'll make up for that on Thursday by
attempting two table uploads.  Saturday is a Yohkoh holiday.

D. McKenzie will be Chief Observer in week 5.

________________________________#_______________________________

JST Day         UT Start Time      Pass   Table ID

Monday         24-JAN-00 05:56     2      000124 P2 ARS2 DKCAL
Tuesday        25-JAN-00 07:50     3      000125 P3 ARS2 FG
Thursday       27-JAN-00 03:08     1      000127 P1 ARS2 DIFF
Thursday       27-JAN-00 08:14     4      000127 P4 ARS2 FG/STD
Friday         28-JAN-00 03:18     1      000128 P1 ARS2 FG/STD

Continuing requests:

KSC & SSOC Tohbans: If any KSC passes are likely to be cancelled (for
example due to heavy snowfall) 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).

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.