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Interferometric Nuller using the Achromatic Interfero Coronagraph

Published online by Cambridge University Press:  05 January 2006

M. Giard ,
F. Casoli ,
F. Paletou ,
Y. Rabbia ,
J. Gay ,
J. P. Rivet ,
S. Dervaux ,
C. Santamaria  and
C. Buisset
Y. Rabbia*
Affiliation:
OCA, Dpt. Gemini, UMR CNRS 6203, Av. Copernic 06130 Grasse, France
J. Gay
Affiliation:
OCA, Dpt. Gemini, UMR CNRS 6203, Le Mont-Gros, BP. 4229, 06304 Nice Cedex 04, France
J. P. Rivet
Affiliation:
OCA, Dpt. Cassiopee UMR 6202, Le Mont-Gros, BP. 4229, 06304 Nice Cedex 04, France
S. Dervaux
Affiliation:
OCA, Dpt. Gemini, UMR CNRS 6203, Le Mont-Gros, BP. 4229, 06304 Nice Cedex 04, France
C. Santamaria
Affiliation:
OCA, Dpt. Gemini, UMR CNRS 6203, Av. Copernic 06130 Grasse, France
C. Buisset
Affiliation:
OCA, Dpt. Gemini, UMR CNRS 6203, Av. Copernic 06130 Grasse, France
*
[email protected]
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Abstract

Among the various recombination schemes devised for nulling interferometry, one is to use the Achromatic Interfero Coronograph (AIC) which basically is a modified Michelson-Fourier interferometer made compact by cementing together optical components. The principle of this AIC is based on the focus-crossing property, from which a wave of light experiences an achromatic π phase shift when crossing a focus. Operated up to now only on a single telescope, this device is able to accomodate several beams for nulling. We describe the use of AIC as an interferometric nuller for a two-aperture interferometer.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 14: Dome C Astronomy and Astrophysics Meeting , 2005 , pp. 331 - 335
Copyright
© EAS, EDP Sciences, 2005

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