15 April 1996
                                                        Serge Savy
                                                     
                                                      
                SXT CHIEF OBSERVER REPORT AND TABLE PLAN

SXT CHIEF OBSERVER'S REPORT for Week 15:   8-APR-96 to 15-APR-96

SOLAR ACTIVITY

Solar activity was low, with no flares, but several tiny active regions and
much structure visible in the diffuse corona. AR7956 was the focus of SXT
observations over the weekend.

SXT INSTRUMENT STATUS

SXT was completely operational with no errors.

CAMPAIGNS

Five days this week were devoted to the X-ray bright point campaign
coordinated by Karen Harvey and in collaboration with SOHO and ground based
observers.  We concentrated on observations near disc centre, and saw
several nice XBPs and one small but dynamic active region.  The campaign
has been extended until the 15th, with continued SoHO participation and the
VLA now involved. 

SEMINARS

The seminar for week 14 seminar was by F.  Farnik (Ondrejov, Czech / ISAS)
on " Two examples of SXT data analysis - large coronal structures seen in
full disk images and relation between preflares and flares as seen in
partial frame images ".



                       SXT TABLE PLAN FOR WEEK 16
                        (16-Apr-96 to 22-Apr-96)



The week X-ray bright point campaign with Karen Harvey, SOHO and ground
observers has been extended until April 15.  The plan is to continue using
a fixed pointing table recording 1x3 images near disc centre.  The target
region for the PFIs is:

Target: Heliographic N7.0, W0.3  (epoch 4-APR-96  17:11 UT)
        Angular      0.00  208.7 (arc sec E, N relative to Sun centre)

The small active region NOAA 7965 will be within our FOV for the 14th and
15th April.

There will be two partial eclipses on 17-April, one at 22:02 UT, and the
other at 23:30 UT, both lasting about 18 minutes each.  Yohkoh and SXT will
be setup to obtain data during both occultations.  No off-pointing is
planned. 

The dark calibration table will be loaded on Tuesday, and the weekly
diffuser images included as part of a standard table on Wednesday.  The
standard table will be uploaded for the weekend. 

The provisional SXT Table Plan for the week is as follows:

    KSC Time (start) in JST     Pass          Table ID        
_____________(= UT + 9 hrs)______#_______________________________
 
Monday	    15-APR-96 02:11      3         960414 P3 ARS0 XBP+LONG
Tuesday     16-APR-96 02:31      3         960415 P3 ARS0 XBP+DKCAL 
Wednesday   17-APR-96 01:06      3         960416 P3 ARS1 STD+LONG        
Thursday    18-APR-96 01:26      3         960417 P3 ARS0 ECLIPSE   
Friday      18-APR-96 22:19      2         960418 P2 ARS1 STD+LONG
Saturday    20-APR-96 02:04      4         960419 P4 ARS1 STD+LONG
Sunday      21-APR-96                     No table load


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


Dumping Patrol images:
   We request that KSC tohban continue to dump a patrol image each time an
SXT table is loaded to facilitate the study of optimizing ARS parameters
for an 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. 

  PREPARATION OF OGs: 
No new OGs need to be made this week. We will continue to use the OGs
generated last week.