I have seen motordrives for eq 1 and 2 mounts on the net that simply attach to the opposite side of the RA slow motion control shaft (looks like the shaft on your second pic sticks out a bit). Bintel have some fancier ones that might work on sale at the moment probably worth giving them a call.
Here is a video link that might give you some perspective
http://www.youtube.com/watch?v=xlGF7PYLpYE