I used the microscope for the picture I linked to by buying this microscope adapter on Amazon and just sticking it into the microscope eye piece.
Unfortunately, a glare pops up that I haven't found the remedy for. This gets worse because I use my studio strobe to light the subject. But thankfully, I noticed there were threads on the adapter so I took an objective off and can partially thread it onto this adapter. So with my macro focusing rail and by rigging the camera to hold at f/14 or more, I am now testing shots. I haven't yet processed any that I have done. But now with the 4x objective, I don't have to crop out the black area that the microscope causes and with the 10x objective there is some black area but less than the microscope. I haven't felt the need to try closer yet.
I will take a cell phone picture so you can see what it looks like. My camera with the adapter and objective.