Hi Outcast,
I didn't know that longer focal lengths need more time on target.. that is good to know.
I have played too much with telescope simulators, like Telescopius, getting an idea of the fov I'd get with my sensor & potential scope. It's actually pretty fun. I also have an impressive spreadsheet with combinations of oversampling & undersampling, which for my sensor is the reason why I was looking around about the 100mm diameter and up region.
Thanks for the points given, all good stuff to consider.
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