I agree with you that a 22mm or 26mm Nagler would give you more than enough of a field of view for a TV-85. Plus their smaller exit pupils will darken the sky background and increase the contrast. Another advantage that these two eyepieces have over the 31mm Nagler and 41mm Panoptic is that they are much smaller and lighter.
I have an NP-127 with a 660mm focal lenght and I use the 26mm Nagler as my low power eyepiece on it. It gives me a 3.04 degree true field at 25x with a 5.00mm exit pupil. On your scope it would give you a 3.35 degree true field at 23x and a 3.7mm exit pupil.
I have an NP-127 with a 660mm focal lenght and I use the 26mm Nagler as my low power eyepiece on it. It gives me a 3.04 degree true field at 25x with a 5.00mm exit pupil. On your scope it would give you a 3.35 degree true field at 23x and a 3.7mm exit pupil.
