Originally Posted by
Rankenphile
I don't know if you have figured out the design for the dome rotation, but I came across something a while ago that might work for it. I've got it buried in my garage somewhere, but basically it's the bearing track for a lazy susan. You could mount it under the outer edge of the dome, or along a track up inside it if the diameter doesn't fit, along with a tooled gear track along the inner diameter and a motor control to turn it left and right...
I've got it somewhere, I'll have to see if it's still in there. You're a better engineer than I, and you probably have an idea for it already that would work better (I already see problems with wiring getting pulled or twisted in this design if not wired with proper slack, anchor points and a method to prevent it), but if it helps, I can dig it up and shoot a couple pics for ya.