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Fog Flats

I am frustrated since I only have low clouds/fog to look at.  I used this 
opportunity to try to test the gain and noise of the modified cameras.  The 
results:

V camera  gain = 2.8 e- / ADU  noise = 17.4 e-
I  camera  gain = 2.5 e- / ADU  noise =  19.7 e-

OK, the fog flats were not very flat.  It was hard to get a reasonable 
exposure.  The flats were 400 counts for the V camera and 3000 for the I 
camera.  One would like (I think) close to half full scale.  The numbers 
are quite similar to the last time I did this.  I guess that means that I 
have done no damage.  We shall see.

Tom Droege