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The whole-earth array ‒ Developments in very-long-baseline interferometry

Moffet, Alan T. (1971) The whole-earth array ‒ Developments in very-long-baseline interferometry. In: 1971 Antennas and Propagation Society International Symposium. Vol.9. IEEE , Piscataway, NJ, pp. 2-4. https://resolver.caltech.edu/CaltechAUTHORS:20170810-161821966

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Abstract

Radio astronomers, in common with many others who work with radio antennas, have always felt rather handicapped by the basic physical relationship between the size of an antenna (measured in wavelengths) and its resolving power (or beamwidth): ΔΘ ~ λ/D, where ΔΘ is the beamwidth in radians, λ the wavelength and D the diameter of the aperture. The largest fully-steerable antennas used as radio telescopes have dimensions of at most a few thousand times their minimum useable wavelength; as a result the beamwidth of such instruments, and hence the angular resolving power, is at best a few minutes of arc.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/APS.1971.1150907DOIArticle
http://ieeexplore.ieee.org/document/1150907/PublisherArticle
Additional Information:© 1971 IEEE. Supported by the U.S. Office of Naval Research and the National Science Foundation.
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
NSFUNSPECIFIED
DOI:10.1109/APS.1971.1150907
Record Number:CaltechAUTHORS:20170810-161821966
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170810-161821966
Official Citation:A. Moffet, "The whole-earth array - Developments in very-long-baseline interferometry," 1971 Antennas and Propagation Society International Symposium, Los Angeles, CA, USA, 1971, pp. 2-4. doi: 10.1109/APS.1971.1150907
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:80263
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:10 Aug 2017 23:39
Last Modified:15 Nov 2021 17:53

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