[Omaroo (Chris Malikoff)]

Originally Posted by Merlin66

I think the issue is that the rear thread is larger on the 12" than on the smaller models. I've just removed the micro focusser and fitted the Lumicon Giant Easy Guider which screwed directly on the the rear threads.

So the stepped-down standard Visual Back gives you 2" or greater? I take it that it does step down smaller than the 3 1/4" you get straight off the back.....