Posts Made By: Michael Fitterman

Ed Moran said:

All of my eyepieces (31mm T5 through 7mm T6) reach focus except my 12mm T4. That one requires about an inch more outward focuser travel (back focus?) than is available. The 31mm focuses the farthest inward, about an inch from all the way racked in. I could move the mirror to try to make both ends meet (so to speak) but I'd have to position it within a tolerance of plus or minus .10" to get both to work. Maybe a 11mm T6 instead of the 12mm T4?

The nice thing here is your 31 comes into focus. The only time you really need to move your mirror is when you have inward issues. If the 12mm is close to getting focus, I suggest getting the 2" barrel adapter for it. That should allow you to slide the 12mm out a bit more than with the 1 1/4" barrel. I've done this in the past and it works great. The adapters are like $10 or something small like that.

Mike.

You should take a look at the UA Microstar