That's a great comparison Paul and thanks for your efforts.
Given the OSC has 25% of the pixels available to respond to Hydrogen Alpha compared with the Mono camera, I think that's a very good result for the OSC, yes it has more noise, but the resolution/overall detail is still up there, more so than I would have clearly expected. Of course the mono wins, but the OSC is not disgraced
. For those that may want to keep their setups and processing simple without going mono, throwing in a bit more exposure will help further bridge the gap somewhat. I'm a lot happier now knowing this as this is a comparison I've always wanted to do / seen done as I lean towards preferring a simpler setup.
Best
JA