Leica APO Televid 77 connected to a Sony SLT33+50mm/1.8 via 49mm to 52mm step-up ring. Supported by a Kowa Angled Bracket/Adapter. Polar axis better aligned now, minimum vignetting with 50mm lens for stills. For video with the SLT33 built-in crop, traces of vignette completely eliminated.
With this kind of magnification, shakes are sometime unavoidable, you'll just have to manage it as best as you can ie. sturdy tripod, remote release, better clamps and judicious weight distribution. A remote for video operation would be great ... can't find any for the Slt33 yet!
Total weight=Heavy! With tripod, scope, camera and bracket, you'd be hard-pressed to add another DSLR to your load. The heaviest is the tripod, followed by the video head and bracket, the scope and last but not least the SLT33.
They say the Nikon-V1 could be the next digiscope camera (in fact some people are already using it to great effect ie. Neil Fifer). For the "just in case", I've ordered a 40.5mm to 52mm step-up ring from Shashinki.