I have been using an ONAG on my RC10 for almost 2 years. I think its fantastic. It's so easy to find a guide star. Although I had to upgrade my guide camera to a Lodestar, because my QHY5 wasn't picking up enough IR.
I don't mind being able to slide the guide camera around on the 2 axis's, it helps sometimes when there are not many stars in the FOV, or to centre one. It is a bit annoying though to have to tighten all the screws up when you're done.
I'm interested in trying out the Sharplock too.
Erik
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