The GBI in 1968
The 85-3 and the 85-2 twin 85-foot telescopes working together with the 85-1 (not shown) in the Green Bank Interferometer, the NRAO’s first array. The GBI operated from 1967-2006. From 1978-1996, it was operated in support of USNO and NRL geodetic and astronomy programs; after 1996 in support of NASA High Energy Astrophysics programs. In the background of this photo, the 300-foot telescope ghosts through the trees.
Credit: NRAO/AUI/NSF
