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Proceedings Paper

A low-cost fiber-based near-infrared heterodyne interferometer
Author(s): Laurent Pallanca; Cristobal Vio; Ernest A. Michael
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Paper Abstract

We are presenting a low-cost near-infrared heterodyne interferometer based on 1.55ìm fiber-components, amateur telescopes and a 3-GSPS-ROACH-based correlator. While first performance is estimated to be sufficient for the brightest stars, we expect science-relevant astronomical performance given various improvements we are working on, as stabilization of fiber coupling, detectors near the quantum limit requiring lowest possible local oscillator power, and fiber line-length correction. These will enable the investigation of extremely long baselines, adaption of existing medium-class telescopes, and testing at the pointing-telescope slots of ALMA, and/or the extension to three of more baselines.

Paper Details

Date Published: 12 September 2012
PDF: 14 pages
Proc. SPIE 8445, Optical and Infrared Interferometry III, 84452Q (12 September 2012); doi: 10.1117/12.927433
Show Author Affiliations
Laurent Pallanca, Univ. of Chile (Chile)
Cristobal Vio, Univ. of Chile (Chile)
Ernest A. Michael, Univ. of Chile (Chile)

Published in SPIE Proceedings Vol. 8445:
Optical and Infrared Interferometry III
Françoise Delplancke; Jayadev K. Rajagopal; Fabien Malbet, Editor(s)

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