10-July, 2000 
                                                 H. Hudson, B. Handy

 
                   CHIEF OBSERVER'S REPORT for Week 28
                       3-Jul-00 through 9-Jul-00


GENERAL 

Activity increased again, to mid-C levels, but without resulting
in major flares. Simnett might claim that there are too many active
regions, and the corona won't allow flare build-up. However we've
received a McIntosh alert regard AR 9077, now at E63 - a potential
"super-region". 

SXT TECHNICAL 

SXT worked fine without apparent problems this week.  No campaigns are
planned for this week, so we propose to do a CCD bakeout for one day.
If our previous experience bears out, this should boost solar activity
significantly.  

SXT SCIENTIFIC

For Web material see

Current Week: http://isass1.solar.isas.ac.jp/sxt_co/000707.html
Index:        http://isass1.solar.isas.ac.jp/sxt_co/index.html

This week's nugget contains ruminations about spiny arcades, with
a recent example from June 2 now on the Yohkoh movie.

CAMPAIGNS 

JOP 123 (DEM Analysis) continued through the weekend.

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

No changes.

SEMINARS

None.


TELEMETRY DOWNLINKS

Week     Wallops  Goldstone   Canberra     Madrid       NASA      Japan
  25          31          4          0          4         39         30
  26          29          3          7          2         41         26
  27          28          1          3          1         33         27
  28          30          0          1          0         31         31



                    SXT TABLE PLAN, WEEK 28-29 
                      (06-Jul-00 - 16-Jul-00)

The VLA/SOHO/SXT Campaign (JOP 128, DEM studies) runs week 28;
no formal campaigns planned for week 29. 

________________________________#_______________________________

JST Day         UT Start Time      Pass   Table ID

Monday AM      10-JUL-00 01:56     4      000709 P4 ARS1 DARK*
Tuesday AM     10-JUL-00 19:16     1      000710 P1 ARS1 BAKE*
Wednesday AM   11-JUL-00 22:47     3      000711 P1 ARS1 DIFF*
Thursday AM    12-JUL-00 19:31     1      000712 P1 ARS1 STD*
Friday AM      13-JUL-00 21:21     3      000713 P3 ARS1 STD*
Saturday AM    14-JUL-00 21:29     3      000714 P3 ARS1 STD*

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

This table plan is subject 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.


                         BAKEOUT COMMAND PLAN

Tuesday   pass 1  19:16 UT    Load bakeout table "000710 P1 ARS1 BAKE*"
          pass 2  20:57       TEC off
          pass 3  22:39       heater on

Wednesday pass 1 19:23        heater off
          pass 2 21:05        TEC on
          pass 3 22:47        load SXT table "000711 P1 ARS1 DIFF*"

The last previous bakeout was December 10, 1999, for reference.