Hi Dave, as you mention the dovetail ... I am wondering if the C5 fork will be good enough to hold another scope.
As any SCT is not perfect for wide fields, a small refractor could compliment it, and I would only need to take that tube (with proper rings and dovetail fitted) in addition to the C5 setup. With my 32mm Plössl, the C5 delivers around 40x, and so any refractor to compliment could cover the lower magnifications, thus any "simple" short achromat can surely do that very well.
I have my old rebuilt Tasco 60mm with 320mm f/l, here next to the C5 tube:
The length is the same but probably it would need to be moved a bit further back than the C5 to get it balanced on the fork mount. I would then lose the ability to watch Polar Star and the surrounding area but most of the time you want to watch objects further away from the celestial pole, anyway.
Not sure if I could also fit a slightly bigger refractor as well as then the tube length grows further and further (a short tube 80mm would already have around 400mm f/l). I always wanted a Vixen 80/400 Halley from the 80s, probably I find one some day. They originally come on flimsy tabletop alt/azimuth mounts so why not upgrade to the C5 fork then.
Did anyone ever try out something like this?