The 45-foot outlier of the Green Bank Interferometer
The 45-foot portable radio telescope replaced the less accurate 42-foot as the fourth element in the Green Bank Interferometer. In this photo from 1974, the 45-foot is 20 miles from Green Bank on a knoll in Huntersville. The tower beside it transmitted the telescope’s data to the GBI’s control building.
Credit: NRAO/AUI/NSF
