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Proceedings Paper

COAST in the near infrared: solutions for infrared interferometry
Author(s): John S. Young; John E. Baldwin; Martin G. Beckett; Roger C. Boysen; Christopher A. Haniff; Peter R. Lawson; Craig D. Mackay; John Rogers; David Saint-Jacques; Peter J. Warner; Donald M. A. Wilson
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Paper Abstract

There are difficult problems involved in building a near-infrared interferometer which uses more than two elements simultaneously. These problems have been overcome at the Cambridge Optical Aperture Synthesis Telescope(COAST). This has allowed us to make the first closure phase measurements on an astronomical source in the infrared. We describe a scheme for fast, low noise readout of an infrared focal-plane array detector, capable of adequately sampling pupil plane fringes on three simultaneous baselines, as well as a procedure for aligning a many-component beam-combiner in the infrared. Finally, the performance of the working COAST infrared system is discussed.

Paper Details

Date Published: 24 July 1998
PDF: 7 pages
Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); doi: 10.1117/12.317141
Show Author Affiliations
John S. Young, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)
John E. Baldwin, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)
Martin G. Beckett, Institute of Astronomy (United Kingdom)
Roger C. Boysen, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)
Christopher A. Haniff, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)
Peter R. Lawson, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)
Craig D. Mackay, Institute of Astronomy (United Kingdom)
John Rogers, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)
David Saint-Jacques, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)
Peter J. Warner, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)
Donald M. A. Wilson, Mullard Radio Astronomy Observatory/Univ. of Cambridge Cavendish Lab. (United Kingdom)


Published in SPIE Proceedings Vol. 3350:
Astronomical Interferometry
Robert D. Reasenberg, Editor(s)

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