Nice, Steven. I've found that dark current just isn't an issue with the 183MM Pro. Neither is amp glow
I'm curious, though -- specs say gain 120 is "unity." I know 111 isn't far off, but did you use a different source to get the 111 figure as "unity?" Other than the ASI specs, I mean...?
I'm pretty sure 111 is unity. My own testing has shown that at gain 111, the conversion ratio is ~1e-/ADU (very slightly more, like 1.01...e-/ADU). Gain 120 would be a bit higher than unity.