This adapter should work.
It is an adapter from Nikon-F Mount (should be the on the Microscope side) to an C-Mount thread.
You will need to use an 5mm C-Mount Spacer to connect the Adapter (no matter if you buy the more or less expensive one) in the amazon-Link to your Camera, since the Chronos has an CS-Mount.
This is Basicaly just an 5mm Spacer with an male and an Female C-Mount Thread, and should come included with your Chronos camera, if you bought one with the Kit-Lens.