Hi Robin,
Just to provide some inspiration for the dome automation system, here is mine. I went a little crazy and got a pcb board made, I found that I didnt like the way that 12v was fed thruogh the k8055 board, so I bypassed that with the pcb.
I installed the encoder (rotary) to the back of the motor itself, to save any hassles.
Instead of a direct link to the shutter motors I have used a radio link to the shutter motor controller. The motor controller I have installed in a few friends roll off rooves observatories, and my own, and works quite well with the lesvedome driver.
I have a dome coming shortly. I may be getting ahead of myself. A bit.
Just a word of warning. Do NOT activate both motor on and directions shutters at once in the k8055 utility. It can cause the k8055 to blow up. The dome driver software staggers the relay timing to prevent this from happening.
Brett