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Very Long Baseline Interferometry

Published online by Cambridge University Press:  14 August 2015

J.M. Moran
J.M. Moran*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, U.S.A.

Extract

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The technique of very long baseline interferometry (VLBI) has undergone two decades of steady growth and refinement since its inception in 1967. In the beginning, only crude measurements of visibility on single baselines were possible. Now 18-station arrays have been used to produce images with dynamic ranges exceeding 2000:1; relative motions of cosmic masers have been tracked at the microarcsecond level of accuracy; and angular size measurements have been made with baseline lengths up to 2 two earth diameters with an orbiting satellite as a receiving element.

Type
Joint Commission Meeting
Information
Highlights of Astronomy , Volume 8: Highlights of Astronomy. As presented at the XXth General Assembly of the IAU, 1988 , 1989 , pp. 553 - 554
Copyright
Copyright © Kluwer 1989