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Shot looks good but the offset will be too high
There are 2 basic settings GAIN and OFFSET, gain is pretty much just amplifying the signal like ISO had on the digital camera, whilst offset is a different issue It also works with the strength of the signal but adjusts the bottom end where signal starts to be received (a bit like the idle of an engine) It needs to be adjusted so that at the quickest exposure possible (bias exposure) a signal would be received from all the pixels, It could be roughly assessed using the preview function setting the GAIN and sliding the OFFSET until the signal line on the histogram was seen. In my case when I set the gain to 50% adjusting the offset saw the signal kick in at about 114, NOTE : when shooting in preview mode the image is Binned4x4 ….. now switch off the preview button (push once), change Binning to 1x1 (under RESOLUTION) Set EXPO for 1 millisecond and push MAKE EXPOSURE button, the image will be a coloured image, and I found I had to increase offset to 117 to get a signal. What you are looking for when you expand the histogram is a bell shaped curve that is not clipped at the lower end. The stretched image should show a random distribution of signal
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