Shaping the GBT’s Surface

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Shaping the GBT’s Surface

elescope Technicians J. D. Nelson and Nathan Sharp measure positions of GBT surface panels

Telescope Technicians J. D. Nelson and Nathan Sharp examine the position of one of the Green Bank Telescope’s 2004 surface panels. Their goal is to get the entire surface shaped into a section of a perfect parabola, so that it will reflect radio waves precisely to a point 200 feet above it, called the prime focus.

Credit: NRAO/AUI/NSF

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Shaping the GBT’s Surface

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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.
	Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
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