I am looking for a good 60mm ~f/4 guide scope. I need more light grasp than my 50mm f/4 SV offers. Better glass would help too. Most of the guide scopes on the market have helical focusers that wiggle or have other issues. I have been told that the Altair 60mm Mini-Guider scope is good and the helical focuser is solid. Has anybody used this scope?
If I can't find a good 60mm scope I may get the Sky-Watcher 50mm ED f/4.8 scope. I have been told that the helical focuser doesn't have issues.
What scopes what would you recommend?