SXT Status Report 
                     14 November - 20 November, 1994
   			    Marilyn Bruner   
			     Hugh Hudson

SUMMARY

	This was another relatively quiet week.  We continued the
systematic program to accumulate terminator images at various spacecraft
offpoint values.  The SXT observations went smoothly, and the sun was
whisper-quiet all week.  Bruner and Hudson attended a special
Japan-Germany workshop that was held Wednesday through Friday of this
week. 
	
OPERATIONS

	This week's operation went very smoothly.  The terminator
observing campaign continued, assisted by SSOC Tohbans Yaji san and
Koshiishi san and KSC Tohbans Fujiwara san and Hori san.  All
observations that are needed to complete the SPARTAN support archive
have now been taken, though most of the recent images are in the DSN
data sets.  Sam Freeland has started reformatting those DSN passes
containing terminator images, so that we can verify their success. East,
West and South offpoint images were taken, and the normal CCD
dark-current calibration was performed on Tuesday.  The QT ARS interval
parameter was increased from 4 to 40 to reduce the number of shutter
cycles and save wear on the mechanism.  This changed the ARS interval
from about 1 minute to about 10 minutes.

	Diagnostic work on the November 3 SXT error continues, though no
further progress has been made in understanding the anomaly.	

SOLAR ACTIVITY

	The sun was very quiet; the GOES 7 X-Ray flux hovered around the
mid-A level all week.  A new region that appeared on the East limb over the
weekend, appears to be more active. 

PERSONNEL

	Marilyn Bruner continues to serve as SXT Chief Observer.  Hugh
Hudson, and Nariaki Nitta constitute the remainder of the regular SXT
observing team.  Zdenek Svestka departed after a fruitful visit spent
studying the SXT observations of giant arches.  Gary Linford returned to
California and Sam Freeland arrived for a 1 month duty tour.

SCIENCE

	The Yohkoh seminar this week was presented by Zdenek Svestka and
dealt with the identification of the SMM "giant arches" in the SXT data. 
This happened on Monday because of visits by Schussler and Schmidt
(Fraunhofer Institute) and Solanki (Zurich) later on in the week.  In
the meanwhile Drs.  N.  Nitta and K.D.  Leka have continued their work
on various aspects of the remarkable active region NOAA #7260.  Nitta
finds little evidence for eruptions associated with the flares in this
region, in contradistinction to the remarkably strong association found
by Shibata in the sample of limb flares to be found in Masuda's thesis. 
A workshop took place at Nobeyama last week, and although there was no
direct participation by Yohkoh research workers at ISAS, it appears that
a remarkable new development in the interpretation of microwave flares
is taking place.  More details will be reported as they become
available. 

PLANS

	Next week's operation is expected to be very similar to this
week's activities.  We will continue the background program to acquire
terminator images at the various defined offpoints; we should be able to
complete the observation set in the Mg 3 filter and will proceed to
Al12.  We are also considering the possibility of conducting a filament
observing campaign if suitable regions are available.  However, the
brightness of the new active region on the East limb could prevent us
from carrying out this campaign.