SXT REPORT FOR WEEKS 36 and 37; 29 Aug 1993 - 11 Sep 1993               

GENERAL STATUS

     This is a combined two-week report because of the meeting that
was held at Kofu last week.  

     Both weeks had interruptions in operations because of typhoons
in the Kagoshima area.  An interruption in electricity at KSC stopped
Yohkoh operations on 4-5 Sept.  The following week Typhoon 13 rolled
through Kagoshima and causing nearly 40 deaths and much general destruction.
Electricity service was again interrupted to KSC for about three days.
When power was restored, it was discovered that the 20m antenna locking
pin was bent, and the antenna could not be operated. Mitsubishi sent
workers to sort out the problem and operations were restored after five
days.  The Yohkoh spacecraft suffered no problems, although, there will
be a five-day gap in the long-term SXT movie.



PERSONNEL

     There have been a large number of visitors to ISAS during the week
preceding the meeting at Kofu and the following week as well.  Keith Strong
spent the week prior to the meeting at the ISAS and Marilyn Bruner arrived
at ISAS a couple of days prior to the Kofu meeting and is also spending the 
following the week at ISAS.  The rest of the SXT contingent includes Hudson,
Freeland, Slater and Lemen.  Currently, ISAS is being visited by many non-
Japanese visitors, including M. Kundu, B. Schmieder, D. Zarro, R. Moore, J.
Porter, P. Bornmann, G. Roumeliotis, D. Sime, and probably a couple of others
that I have forgotten.


SOLAR ACTIVITY

     The solar activity remains very low, typically at mid-B GOES level. Because
of the level of the X-ray activity, we are beginning to make plans for another
bright point observing campaign.


SCIENCE PROGRESS

     An international meeting was held in Kofu, Japan during 6-10 Sep 1993,
hosted by the solar group of the Nobeyama Radio Heliograph.  There were 
three and a half long days of 15 minute talks and posters.  There were
many interesting papers and there were also many good discussions about the
papers.  Many flares are now being analyzed by various Yohkoh and Nobeyama
team members.  The loop-top flare brightening as seen by SXT is now being
studied by several people.  Sakao reported about that the "cornucopia" model 
seems to explain the relative foot-point brightest and spectral-hardness
observations quite well.


SXT OPERATIONS

     The operations were interrupted by the problems at KSC related to
the typhoon, but SXT experienced no additional problems.  We were able
to perform the routine off-points and dark calibration sequences. Next
week we will not perform SXT table operations on Thurs and Fri (JST)
because spacecraft engineers will be checking out the operation of the
Skew-gyro (which has not be turned on since early in the mission).



                                                  James R. Lemen
                                                  15 Sep 1993