Rotary telescope focuser

This is a simple threaded telescope focuser. I suggest you first print with short tube sizes to adjust the eyepieceTolerance and threadTolerance parameters (and maybe threadAngle) for your printer.

I am not sure that I actually want to install it on one of my telescopes--my test print was too rough, but that may be a printer issue. This might be handy if you're building a telescope and need a quick and dirty focuser to put on it for testing.

The scad file uses (and includes built into the