Quote:
Originally Posted by peter_4059
There must be a lot of people imaging with f4 or faster systems - I wonder how are they focusing?
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Strongmanmike uses an Atlas on his AG12. It has a tiny step size (105,000 steps moves the total range of about 11mm from memory.) The Atlas appears to be the focuser of choice on fast RH scopes as well.
Sorry, I can't help otherwise. I don't have experience at less than f/4.9.
Cheers,
Rick.