Motor Maintenance at the GBT
The Green Bank Telescope was constructed in the 1990s, beginning with its huge circular track and support. The track goes 25 feet into the ground to remain sturdy and level. In this photo, contract engineers and staff are working on one of the truck motors. The GBT’s four trucks drive the 17-million pound telescope around on this circle. Each truck has four wheels, meaning each wheel supports one million pounds.
Credit: NRAO/AUI/NSF
