15 June 1996
                                                         
                                                            Mark Weber
                                                           
                                                      
                SXT CHIEF OBSERVER REPORT AND TABLE PLAN

SXT CHIEF OBSERVER'S REPORT for Week 24:   10-JUN-96 to 16-JUN-96

SOLAR ACTIVITY

The presence of NOAA AR 7968 served to keep the X-ray flux from the sun
at around A-level. With the disappearance of the AR around the west
limb this weekend, solar activity has dropped even more.


SXT INSTRUMENT STATUS 

The SXT performed smoothly this week and is operating well.


CAMPAIGNS

From 2-June to 10-June, we were running a campaign with Meudon and
SoHO/SUMER,CDS (correspondent Brigitte Schmieder) to observe (1) prom-
inences and filaments, and (2) chromospheric activity and coronal 
loops. On June 10 (Monday), we observed AR 7968 with fixed pointing for
a few hours, before returning to the current standard table. The SXT CO
forgot to set the observing target for the Quiet/Med mode, which was
invoked during SAA traversals, so some images missed the target region.
However, many more excellent pictures were taken of the AR during the 
Qt/High mode. We hope to hear many good results from the other
observers.


SEMINARS

There was no Yohkoh seminar this week.


                       SXT TABLE PLAN FOR WEEK 25
                         (17-Jun-96 to 23-Jun-96)


There are no coordinated campaigns scheduled for Week 25, as of yet.
A dark calibration table will be loaded on Tuesday, and a diffuser
table on Thursday, unless opportunities suggest otherwise. The table 
plan may be altered to coordinate with SoHO targets if we can be of 
assistance.


    KSC Time (start) in JST     Pass          Table ID        
_____________(= UT + 9 hrs)______#_______________________________

Tuesday	     18-JUN-96 17:58	 2	   960618 P2 ARS1 DKCAL
Wednesday    19-JUN-96 18:17	 2	   960619 P2 ARS1 STANDARD
Thursday     20-JUN-96 16:53	 2	   960620 P2 ARS1 DIFFUSER
Friday	     21-JUN-96 18:55	 3	   960621 P3 ARS1 STANDARD
Saturday     22-JUN-96 19:14	 4	   960622 P4 ARS1 STANDARD

       *** Please note that this table plan may change ***


Dumping Patrol images:

   We request that KSC tohbans continue to dump a patrol image each time an
SXT table is loaded to facilitate the study of optimizing ARS parameters
for an awfully, awfully quiet period. 

  SSOC TOHBAN, please fax the preliminary OP list to D-tou when it contains
a terminator so that the Chief Observer can suggest which OG's to use.