A family shot of the different focuser of the scopes.
On the left the Cassegrain Focuser, middle the 16cm refractor focuser and right the 20 cm focuser.
The eyepiece attachment system is very similar to the Zeiss system.
This are the 3 different eyepiece dovetails from the different focuser's. It are Zeiss style dovetails. Or are it original Zeiss dovetails?
More and more I find indications that Kozelsky knew very well the Zeiss Jena material.
The large Zeiss Jena scopes were "common" in Eastern
