Yeah I use 6s on my refractor.
I think any guide scope will provide better guiding than I was getting on Saturday night so I am happy with a guide scope at the moment. Might have the OAG on the imaging train, test it, and if it doesn't work, use the guide scope next clear night.
I have thought of binning while imaging some times just for that extra sensitivity, because I can then drizzle in stacking. I have tried the Three Point Alignment, but find it clunky as you have to wait each time for the plate solving where as Sharpcap is immediate.
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