Maybe a cheap 4wd winch because you get all the wiring and a hand control ... you would need more wire I guess to get the controller to the house...
A cheap garage door opener because you get a remote.
Or a gate motor which comes with remote.
The area of concern is how to set it up
I think if it easy to close keep it manual...the reality at the end of the night you should put on your lens cover and put a cover over your scope....so you need to go there anyways.
alex