Attached is the latest model for the turret (3D PDF). Cliff and I decided to focus on getting the rotating base done and moving up from there. The Aluminum box is 1' X 1' X 2' containing everything. The shaft is 3" steel with the flange on top to mount the pole and everything above. Rotation will be from an electric linear actuator and rack and pinion set-up. I also attached a budgetary bill of materials. We can do a lot better on the Aluminum but I threw them in there anyway.
This is still just a preliminary model, but with real components. We have some further design to do but just keeping you apprised of the progress.