Attached are subs converted to tifs from the different filters plus a dslr shot minus the wheel. The second last one, Luminance was taken on a different night and it was about 10degrees East of vertical where the B, number 2, was maybe 45 degrees West of vertical, so flipped on the mount I suppose. Not a lot of difference in distortion . Very bad almost horizontal on the top left and just slight pointing to the middle on the bottom right.
The celestron dovetail has three large solid screws on a heavy dovetail plate and supported my DSLR ( minus the wheel ), although it does show some of the same uneven distortion as shown in the last image of the cat paw.
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