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Proceedings Paper

OHANA phase II: a prototype demonstrator of fiber-linked interferometry between very large telescopes
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Paper Abstract

The 'OHANA (Optical Hawaiian Array for Nanoradian Astronomy, means "family" in Hawaiian) aims at making a large and sensitive optical/IR array with the Mauna Kea 3 to 10 meter telescopes. Telescopes will be linked with single-mode fibers to carry the coherence of the beams from the output of the telescopes adaptive optics systems to the beam combination units. The project has been divided into three phases. The first phase is dedicated to the injection of light into single-mode fibers and to the building of the injection module. The third phase is the realization of the complete array and its use by a wide community of astronomers. In the second phase, a prototype 'OHANA will be built and the "shortest" baselines will be explored. The baselines will be located in the South-East and West parts of the observatory. An extra baseline will possibly link the two groups of telescopes if infrastructure comply with it. This phase II 'OHANA will already be the longest and most sensitive optical/IR interferometer built. Scientific targets will span young stellar objects, extragalactic sources and other types of astronomical topics which require both high angular resolution and sensitivity. This paper reviews the main characteristics of the phase II interferometer.

Paper Details

Date Published: 21 February 2003
PDF: 6 pages
Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); doi: 10.1117/12.459382
Show Author Affiliations
Guy S. Perrin, Observatoire de Paris-Meudon (France)
Olivier Lai, Canada-France-Hawaii Telescope Corp. (United States)
Julien Woillez, Observatoire de Paris-Meudon (France)
Jean Guerin, Observatoire de Paris-Meudon (France)
Francois Reynaud, Univ. de Limoges (France)
Stephen T. Ridgway, National Optical Astronomy Observatory (United States)
Pierre J. Lena, Observatoire de Paris-Meudon (France)
Peter L. Wizinowich, W.M. Keck Observatory (United States)
Alan T. Tokunaga, Institute for Astronomy/Univ. of Hawaii (United States)
Jun Nishikawa, National Astronomical Observatory of Japan (United States)
Francois J. Rigaut, Gemini Observatory (United States)
Andrew J. Adamson, United Kingdom Infrared Telescope (United Kingdom)
Olivier Guyon, Institute for Astronomy/Univ. of Hawaii (United States)

Published in SPIE Proceedings Vol. 4838:
Interferometry for Optical Astronomy II
Wesley A. Traub, Editor(s)

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