I discovered that the zeiss binohead has three screws fastening the schwalbering. so i will simply srew on a suitable mount to fit my diagonal, no idea whether the brillentaugliche kpl eyepieces will conflict with the refractor optics, but experiments will show.

My microcope equipment (a junior GF and a standard 15) is of the 160mm tubelengt type, but i do not think that matters in a telescope where you can run the rear fittings back and forth. (another matter is my search for a not inordinately expensive 65mm plan achro not of the infinite tube length type: they seem not to be made anymore and used ones do COST.

p