Report from ISAS 10/05/91  (0143 JST)

Got a very nice run of quarter resolution images on 10/03.  Lots of flare action
of various kinds but missed the rise and peak of the M flare at around 1320 UT.
In one full resolution strip image we managed to catch a very tiny flare.  It
indicated an angular resolution of 2.5 arcsec FWHM--better than we ever achieved
in ground testing!  The tiny flare was well centered in the primary pixel which
included 32% of the energy.  It is possible that the distortion of themirror 
under 1 g was enough to cause the small improvement we now observe on orbit.

it is also interesting that there are such tiny flares.  It took place at
1247 UT just south of the big pair of active regions that are on the
disk now.  I can't provide a better location without more work than I'm
willing to do just now.

Most of our partial frame images were useless for one reason or another
in this data set.  This is not a trivial machine to control in flare mode.
One of our problems is that the first patrol image (used for locating
th active regions) after the morning blue light flood is showing bleed back
which confuses the ARS search.  We had not experienced this problem before 
although looking at lab test data made me think that we were marginal with
only 15 flushes.  It seems that cooling the device might have something to
do with the change because of the time coincidence of first noticing the
problem and the TEC turn on.  Tomorrow Mons is going to talk to Sam about
desinging a RAM patch that will allow some additional flushes which should
solbe the problem.

That is it for now.  We enjoyed mike's useful visit.

Loren Acton