Sorry to resurrect this old thread...
Since I have finished collecting data for my latest image of the Prawn, I decided to fine-tune camera's orthogonality (I have a camera tilting unit from Gerd Neumann).
I think I got it pretty close to perfect, perhaps I could move the camera 0.5-1mm further out, but nonetheless I am now very happy with star shapes:
http://cdn.astrobin.com/images/thumb...20Lipinski.jpg
I had a chance to use this telescope on about 30 sessions since I've got it. Love the mechanics and optics. Machined tube, machined baffles, FTF 3.2" is rock solid and autofocus is very precise, oil-spaced lens cell seems to cool fast. Refocus is needed perhaps every 1.5-2.0 C change if you are after perfect focus. When changing filters, there is hardly any adjustment needed. I think this scope would be a very nice match for KAF16200 for wide fields, one day perhaps.
Suavi