20100919UT
We took bias sequences (10 bias each) with an incremental time span between each sequence.
This allowed us to verify the effect of "integration" time on bias.
Note that the first bias of each sequence has a saturation pattern that
is proportional to the time span between sequences: 150, 300, 600, 1200s.
21:25UT
Bias sequence
2622-2631
sleep 150
2632-2641
sleep 300
2642-2651
sleep 600
2652-2661
sleep 1200
2662-2671
With the room made available for light by the spacers and the shutter not light tight the CCD is gathering light.
We can repeat it on 2010 09 21UT now that we used black tape around the spacers space and see if there is improvement.