Quote:
Originally Posted by Shiraz
Colin, thanks for posting your methodology. Couple of quick questions, have you used inverse gain (electrons/ADU) as is commonly (perversely) called "gain" by the chip makers, or have you taken the quoted figure to be a gain in ADU/electron? were your subs 15 minutes or 90 minutes?
regards Ray
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Trying to actually track down all of the actual gain figures takes far too long so I am doing the straight calculation as (well depth)/65535. With my QHY9 I got my gain setting to the point where full saturation (ADU) happens when the well fills so it is actually at 0.389. I have been using e-/ADU as the conversion so the 16803 is the only one in that list that has above 1e-/ADU.
My subs were 15 minutes long but from that I could calculate that they wouldn't be sky limited until I hit 90 minutes (as an average of the night).