The 42-foot Collapsable Telescope

Disassembling the 42-foot portable radio telescope. The 42-foot’s trailer carried the dish as stacked panels and also integrated the telescope’s donut-shaped drive and a small control room. In the mid-1960s, this little telescope served as the fourth, remote member of the Green Bank Interferometer (GBI), the test array for the Very Large Array (VLA).
Credit: NRAO/AUI/NSF
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