April 3, 2000 
                                                           H. S. Hudson 


 
                   CHIEF OBSERVER'S REPORT for Week 14
                      27-March-00 through 2-April-00 


GENERAL 

Yohkoh commenced support of VLA observations and of JOP083. Prior to
these campaigns, activity shot upwards - 9 M flares in 2 days - and
then shot downwards just as fast.

SXT TECHNICAL 

SXT functioned properly, no new problems to report.  

For Web material see

Current Week: http://isass1.solar.isas.ac.jp/sxt_co/000331.html
Index:        http://isass1.solar.isas.ac.jp/sxt_co/index.html

This week's nugget tackles the difficult problem of explaining DEM
to Joe Sixpack. But Loren provided a beautiful frontispiece.

CAMPAIGNS 

The campaign now completed (Max Millennium #6) must have been extremely
successful. We hope to see coordinated observations of tiny rapid emissions
in the lower solar atmosphere from several flares.

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

Nariaki Nitta returned to Palo Alto. But he was replaced by senior 
heavyweights: Loren Acton and Hugh Hudson.


SEMINARS

No seminar this week. None next week because of the ASJ.


                      SXT TABLE PLAN, WEEK 15
                       (2-Apr-00 - 8-Apr-00)

We will coordinate with JOP 83 to observe clear loops in active regions
and with VLA to try to detect radio signatures of EIT waves.  The target
for the former should be given by the SoHO team (Sarah Matthews), and the
FFI sequence will be optimized for the latter (leader: Nat Gopalswamy).


________________________________#_______________________________

JST Day         UT Start Time      Pass   Table ID

Monday AM       2-APR-00 22:36     1      000402 P1 ARS2 VLA+JOP83*
Tuesday AM      3-APR-00 21:04     4      000403 P4 ARS2 JOP83+DK*
Wednesday AM    4-APR-00 19:33     1      000404 P1 ARS2 JOP83+DF*
Wednesday AM    5-APR-00 00:39     4      000404 P4 ARS2 JOP83*
Thursday AM     5-APR-00 21:25     3      000405 P3 ARS2 JOP83*
Friday AM       6-APR-00 23:27     4      000406 P4 ARS2 JOP83*
Saturday AM     7-APR-00 21:45     4      000407 P4 ARS1 VLA*

* The ID reflects the UT date of the first pass.

This table plan is likely to change.


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.