Hi Greg
I will ask on Monday
However there are some figures here from a cloudy nights review of the Moravian Instruments G4 16000 by Michael Miller
http://www.cloudynights.com/page/art...g4-16000-r2815
Not the best images but that's the processing and scope not the camera.
A dark would tell a lot as it shows up things like amp glow and noise levels, bad columns etc.
Its not unusual for these large chips to have a vertical line or two. This is different from a bad column and comes from the vertical readout. 11002 chips get it as well, so do 6303E chips. They dark subtract out.
Greg.