Green Bank’s 42-foot portable telescope

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Green Bank’s 42-foot portable telescope

Through 1976, this 42-foot portable radio telescope served as the fourth, remote member of the Green Bank Interferometer (GBI), the testbed for the Very Large Array (VLA). The 42-foot’s trailer integrated the telescope’s donut-shaped drive and a small control room, and during moves, it carried the disassembled dish as stacked panels. This photo was taken in 1967, when the telescope was assembled and tested in Green Bank.

Credit: NRAO/AUI/NSF

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The National Radio Astronomy Observatory is a facility of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
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