That concrete clubhouse, complete with a rotating turret that looks like a medieval fortress, still stands today. It is the spiritual heart of the amateur astronomy world.
In an era before computer-aided design, these builders used simple geometry and raw craftsmanship to achieve optical precision measured in millionths of an inch. stellafane vt
Held every summer during a new moon, the convention draws hundreds of enthusiasts who bring homemade telescopes for display and competition. That concrete clubhouse, complete with a rotating turret