A family shot of the different focuser of the scopes.
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 ;-)