VLA

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VLA

Abbrev. for Very Large Array. An aperture synthesis radio telescope near Socorro, New Mexico, and part of the National Radio Astronomy Observatory. The VLA is the most effective instrument in the world for general-purpose radio-astronomical imaging. Its antennas are placed on a Y-shaped track that allows for high-resolution observations of sources over a wide range of declinations. The three arms of the configuration are 21, 18.9, and 21 km long, and together hold 27 dish antennas that can be positioned at 72 different observing locations. Each dish is 25 meters across, with a surface accuracy of 0.5 mm, and weighs 193 tonnes. The dishes can be arranged in one of four principal configurations, from ‘A’ (with a maximum baseline of 36.4 km) to ‘D’, which is the most compact and has a minimum baseline of 33 meters. Their scales vary by the ratios 1:3.2:10:32. The VLA generates 351 simultaneous baselines and can therefore synthesize maps relatively quickly. It has receivers for observing in six wavelength bands centered near 90, 20, 6, 3.6, 2, and 1.3 cm.

VLA

(astronomy)
References in periodicals archive ?
It says that St Vlas "is a developing resort on the Black Sea coast, still relatively small in size".
Many hotels in Sunny Beach near St Vlas were "overshadowed by the brooding bulk of unfinished developments".
St Vlas, which is just a matter of minutes from the Bulgarian resort of Sunny Beach, is fast becoming one of Europe's hottest tourist spots.
The mock Chinese tales by Vlas Doroshevich, a journalist who died in 1922, implicitly satirize the czarist government of Nicholas II but remain, as the editors of Beyond the Looking Glass observe, relevant to today's Russia.
These VLAs, recently discovered by Martin Hemler at the Dana Farber Cancer Institute in Boston, appear on white blood cells after the cells become active in fighting infection.
Directed by Tarsem Singh (The Cell, The Fall) and written by Charles Parlapanides and Vlas Parlapanides, Immortals tells the story of the ruthless King Hyperion (Rourke), who leads his bloodthirsty army on a murderous rampage across Greece to find a deadly weapon that will destroy humanity.
Although most of the beaches have not been taken care of for several years, there are a number of attractive offers in the resorts of Sveti Vlas, Elenite, etc, according to reports of Capital Daily.
Fang LQ, de Vlas SJ, Liang S, Looman CW, Gong P, Xu B, et al.
Abeku TA, van Oortmarssen GJ, Borsboom G, de Vlas SJ, Habbema JD.
ON in Byala, Dolen Chiflik and Shkorpilovtsi, and the summer resorts of Sunny Beach, Pomorie, Ravda, Nessebur, Sveti Vlas and Obzor.
And in Bulgaria, he snapped up a studio apartment in St Vlas, near Sunny Beach, for 68,000Euros (pounds 52,000), and picked up the keys last October.