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 Europe.
The sizes are:
The smallest from the Cassegrain: focuser side: 63.5mm, eyepiece side 54,7mm
Medium size from the 16cm refractor: focuser side 71,6mm, eyepiece side 71,2mm
Large size from the 20cm refractor: focuser side 94,5mm, eyepiece side 88mm
All the focuser and draw tubes have different sizes.
For the people who love stories. Found all the adapters in a cooking pot in one of the hotel chambers ;-)