I wanted to get higher magnification than my Denkmeier 21mm eyepieces provides with the Denkmeier II binoviewer on my 80mm refractor, so I purchased a pair of Televue Delite 11 mm eyepieces. I was very surprised to see that the barrel diameter of the Televues are slightly narrower than the Denkmeiers, so the Televues actually do not fit snugly into the binoviewer, and thus gives two images that does not merge. Obviously this is a setup that I cannot use (I tried to tape the notches on the Televues, but this does not help, it is the main part of the barrel that are too narrow for the binoviewer).
Have anyone used eyepieces other than Denkmeiers in a Denkmeier II bionviewer? Do the Denkmeier eyepieces have wider barrels than all other eyepiece brands?
All help would be greatly appreciated.