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Beam Combination for Wide Field Imaging

Published online by Cambridge University Press:  19 July 2016

M. Tallon  and
I. Tallon-Bosc
M. Tallon
Affiliation:
URA CNRS 709, Dpt. d'Astrophysique, Université de Nice, F-06108 Nice cedex 2
I. Tallon-Bosc
Affiliation:
URA CNRS 1361, Observatoire de la Côte d'Azur, F-06460 Saint-Vallier de Thiey

Abstract

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Several limitations reduce the field of view in radio-interferometry. With an optical array, two of them can be overcome to some extent according to the beam combination method. A beam combination in the pupil plane can completely overcome one of them. In the image plane, a beam combination obeying the rules of geometrical optics can overcome both limitations in principle, but is difficult to achieve in practice. We discuss particularly the real case of a Michelson Stellar Interferometer where a periscope partially re-introduces these limitations, yielding a trade-off between the extension of the field of view and the use of the periscope.

Type
Imaging Techniques
Information
Symposium - International Astronomical Union , Volume 158: Very High Angular Resolution Imaging , 1994 , pp. 83 - 90
Copyright
Copyright © Kluwer 1994 

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