[Omaroo (Chris Malikoff)]

I've just gone and done it again. I've bought a second William Optics 66mm Petzval scope to match my original one. I intend to create for myself a binoscope from them. There are some good websites that describe what people have done, but they are all top-end and rather expensive looking. Has anyone ever made a set for themselves? Adjustment of interocular distance with two diagonals is going to be the hard part I think. You don't want any field rotation. It seems that there is a guy in Japan who manufactures a system using two 45 deg erecting prisms one on top of the other to allow the I/O distance to come right down. He also manufactures (or did) a system to allow parallel skewing adjustment between the two OTA's.

Has anyone any experience in this sort of thing?

Cheers
Chris