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Proceedings Paper

FIRST - a fibered aperture masking instrument: on-sky results
Author(s): Elsa Huby; Guy Perrin; Franck Marchis; Sylvestre Lacour; Takayuki Kotani; Gaspard Duchêne; Elodie Choquet; Elinor Gates; Julien Woillez; Olivier Lai
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Paper Abstract

We present on-sky results obtained with the visible light prototype of the Fibered Imager foR Single Telescope (FIRST) mounted on the 3-m Shane Telescope at Lick Observatory and using its Adaptive Optics system. This instrument is dedicated to high angular resolution and high dynamic range imaging. Its principle combines both techniques of single-mode fiber interferometry and pupil remapping. Simulations predict a dynamic range up to 106 at /D, or at a few tens of milliarcseconds at 630nm using an 8-m telescope. Laboratory experiments based on a 9-fiber prototype working in the 600nm–900nm spectral band successfully demonstrated the power of the concept. The same prototype has been set-up on the 3-m Shane telescope in July 2010. In this paper, we present the on-sky results obtained in October 2011 with an improved version of the instrument using 18 fibers. They clearly show the detection of the binary star Capella at the diffraction limit of the telescope.λ

Paper Details

Date Published: 24 September 2012
PDF: 7 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84461Z (24 September 2012); doi: 10.1117/12.925615
Show Author Affiliations
Elsa Huby, LESIA, Observatoire de Paris, CNRS, Univ. Paris-Diderot (France)
Guy Perrin, LESIA, Observatoire de Paris, CNRS, Univ. Paris-Diderot (France)
Franck Marchis, SETI Institute (United States)
Sylvestre Lacour, LESIA, Observatoire de Paris, CNRS, Univ. Paris-Diderot (France)
Takayuki Kotani, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Gaspard Duchêne, Univ. of California, Berkeley (United States)
Institut de Planétologie et d’Astrophysique de Grenoble (France)
Elodie Choquet, LESIA, Observatoire de Paris, CNRS, Univ. Paris-Diderot (France)
Elinor Gates, Univ. of California Observatories/Lick Observatory (United States)
Julien Woillez, W. M. Keck Observatory (United States)
Olivier Lai, Canada-France-Hawaii Telescope (United States)

Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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