The focus is smooth but with more friction than Zeiss focusers I'm accustomed at. Since I go from 10 meters to infinity with a slight move on the knob everything is fine. I wouldn't call it stiff nevertheless.
I used it for astronomy already. I got ghost images on the Moon I don't get with Zeiss and Canons, but they were faint. The view was great, sharp and beautiful. I saw many craters I wouldn't expect considering the magnification. It seems the resolution is great at the sweet spot but it falls dramatically at the edge.
Hyades, Pleiades, Double Cluster at Perseus, Orion Nebula, they all are great. Still I would always choose any of my Canons 12x36 or 18x50 for them, since their resolution at their magnifications is greater and they have also greater aperture and the IS. But on walks and during travelling, when I will only have this (and the Papilio), it can show me things. I only had a Soviet 8x30 monocular during a partial moon eclipse in Bruxelles (and on the last floor of the Eifell tower, for sightseing, and in many other occassions), this Monarch 7 is clearly much better.