Hello Joe
Thanks for the information.
It is going to be a telescope mounted rotator so I can frame my shots as i like without touching the scope. I have an observatory so everything is permanently mounted.
I honestly have no idea if it will work or not, it is a bit of a suck it and see kinda project. There may be just too much weight (camera,filter wheel) to move it how I want it to.
I have a design in mind, but it may be quite laughable so I will try it out first

If I do get it to work properly I will defiantly be sharing it here in case others find it helpful. $1000 odd dollars for a ready made commercial rotator is just way too expensive for what it is, IMHO.
Thanks again
Jeremy