The Angus Smyth Telescope. Frame's up, floor's on, hinged front wall is on. Time to see if the scope fits. Closeup of fold down front wall with roof attached. Cable attached to middle of strut is part of counterbalance system.
Line attached to top of strut is for pulling up and easing down the wall.
The wall has a 2x8 outer frame. Along with the steel roof, it makes for a heavy lift. Phoebe the poodle tests the strength of the floor. The Ladder of Lead. Weight is about 10 lbs each.