Here's what I use for most of my imaging. Unless I'm evaluating something for Astronomy Technology Today, there is usually a Meade DSI Pro II plugged into the refractor and an Orion StarShoot Auto Guider in the guide scope.

I've in enclosed the installation with an extension to the shed you see here. It has a modified version of the ever popular roll-off roof. I don't have permanent support rails in place, but since the rolling part of the roof will only be about 5 feet long and 6 feet wide I'm just let it hang off the front wall when it's rolled out. I built it with one slope - front to back - so it can just roll off the front and hang there until I'm done. Easy peasy!