Quote:
Originally Posted by Imme
That’s strange, I was shooting at 79 gain and mistakenly had offset at 21 (normally 12) a few weeks ago and I saw a significant difference in the range.....or maybe I was imagining it?
It is a OSC though so maybe that makes a difference?
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How did you assess the dynamic range? The normal way is FWC/read noise
In 12 bit terms at offset 12 and gain 79 (2e-/ADU) it would be 4084/1.1=3712 or 11.858 stops. With offset 21 it becomes 4075/1.1=3704 or 11.855 stops.
You'd have to do a side by side comparison on the same night. For instance, the moon could make a significant difference.
Your mistake in setting the offset is a good reason for it being fixed now. If you set too offset too low you risk clipping to black.