I'm planning a backyard observatory in a location where local building regulations pretty much rule out a dome (too high) or a roll-off roof (too big a footprint taking the rails into account). A roll-off shed
like this is one option, but in practice the site is probably better suited to a fold-off or batwing roof.
Can anyone supply images and/or plans for a suitable design? I'm well aware that folding roofs have a reputation for being leaky, but I see this as a problem to be solved rather than a show-stopper.