An annoyance with the Leitz bathtub condenser on my Dialux microscope is the lack of a filter tray, so I decided I needed one. I constructed a clamp-on assembly to fit under the condenser. It has a centerable filter holder and is constructed from modellers 60 thou polystyrene sheet and some convenient bits and pieces from my bits box:
and here is a sample photomicrograph using a Leitz 25/0.55 NPL Fluotar objective:
Leitz bathtub condenser & darkground
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Leitz bathtub condenser & darkground
Graham
Though we lean upon the same balustrade, the colours of the mountain are different.
Though we lean upon the same balustrade, the colours of the mountain are different.