Symmetry in Steel
Over 13,000 steel beams support the world’s largest fully-steerable telescope in Green Bank, West Virginia. The Green Bank Telescope weighs 17 million pounds, and moves on a rotating base and a tilting gear. The two-armed yoke at the base of the GBT supports the tilting gear. And a gigantic arm attaches behind the dish to give it strength to tower over 200 feet above the surface.