Giant Ducks in a Row

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Giant Ducks in a Row

The North Arm of the Very Large Array shows perfectly aligned 25-meter antennas in their stowed position. This is D-configuration, when all 27 antennas of the VLA sit on the piers closest together, forming an array only 1km in diameter.

Credit: W. Grammer, 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.
	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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