Date: Sun, 26 May 1996 13:47:04 -1000
From: Sandy Leggett <skl@skl>
To: irtfall@skl
Subject: nsfcam ok 
 
hi
 
I'm glad to report that nsfcam looks healthy and useable for tonight,
Sunday.
 
 
The darks look fine, the lens and filter and cvf wheels seem to be
moving perfectly.  The single-pixel dark spots that were seen in the
recent engineering run, before the latest warmup, are much reduced.
 
Based on flatfield images the sensitivity looks OK, however we have a
new diffuse dark feature.  We should monitor this and if it gets worse
think about baking out the array.  The feature is different from the
blobs that we've seen before in that it is extended - actually it looks
kind of like a comet, hmm .. It has a darker head in the lower right
of the array and a tail curving up almost the entire length of the array.
It looks like we lose about 10% of the light in this feature.  I've put
a J band flatfield image in /data/unique, called flat.may26.
 
 
Sandy