Cec.
Nice summary.
Ta!
I have a pair (?) of Denk II BVs waiting for me at the post office (can't get to it as roads are washed out tho'
).
Your report was very interesting as I bought another 19 Panoptic to pair in the BVs based on similar calcs and the views through a single 19 with my f15 Mak-Cass. The pairing has no problem resolving detail on Saturn or Jupiter though. Cassini division was easily visible earlier in the year.
I already have a 13mm Nagler with which I'm more than happy, but per your report, might give the shorter Explore Scientifics a whirl on Luna during those nights of great seeing.