Hi all,
Thought I'd add my shed build to this thread. I did a lot of comparing of different sheds for roll off, roll out and such and eventually settled on the Absco.
My original plan was a flip lid like Richard but then I realised while building it that the lid didn't go all the way to the ground and having it that way wasn't suitable for me. I'd seen a video of a lift and tilt mechanism on a "mini" observatory and so I went that track and it's working well. A pool pump shed is a great option for space limited setups on a budget.
Quick vid of the roof opening process:
https://youtu.be/0sirFFHqJIk