super8 and microscope

I want to shoot through a microscope.

The Nikon R8 and R10 had close-up lens + microscope adapters, that attached
in place of the microscope eyepiece, but I cannot find these...(the EC-1 /
EM-1 and EC-2/EM-2).

Does anyone know of a general camera adapter that could be used either with
a closeup adapter or the internal macro feature to shoot through a
microscope?

Thanks,
Leshalles