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Voyager is able to flip between gain settings at will. The noise seems mostly to be coming form the Oiii so I might (If I ever get a clear sky again) try shooting that on a higher gain, the starless HA looks quite smooth as does the RGB.
There has been a bit of discussion about it, but these cams seem to calibrate quite well with just a master bias, so there may be no need for me to shoot 1200 second darks at least initially (Though exposure time may be shorter on gain 100 anyway to avoid saturating anything) I should add that on these cameras gain 0 is unity gain (Or as close to unity as they go, all gain settings are above unity and 0 is just a bit above it) so it is not really low gain as might have been seen in the likes of my old ASI294 where gain 0 was about 4e/ADC
The Funny enough, the noise seems to be being accentuated by a noise reduction step. I was using Nik tools Define, but it seems to be introducing what looks a lot like sharpening worms! More investigation required.
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