Olympus Observation Tube
BH, BH2, BH3
These seem to be compatible at least mechanically. I am less clear if the finite/infinite optics train comes into play here.
Binocular
Trinocular
Other
U-PMTVC
C-mount adapter
These seem to be compatible at least mechanically. I am less clear if the finite/infinite optics train comes into play here.
C-mount adapter