Interferometric Nuller using the Achromatic Interfero Coronagraph

Y. Rabbia; J. Gay; J. P. Rivet; S. Dervaux; C. Santamaria; C. Buisset

doi:10.1051/eas:2005053

Issue		EAS Publications Series Volume 14, 2005 Dome C Astronomy and Astrophysics Meeting


Page(s)		331 - 335
DOI		https://doi.org/10.1051/eas:2005053
Published online		05 January 2006

Dome C Astronomy and Astrophysics Meeting
M. Giard, F. Casoli and F. Paletou (eds)
EAS Publications Series, 14 (2005) 331-335

Interferometric Nuller using the Achromatic Interfero Coronagraph

Y. Rabbia¹, J. Gay², J. P. Rivet³, S. Dervaux², C. Santamaria¹ and C. Buisset¹

¹ OCA, Dpt. Gemini, UMR CNRS 6203, Av. Copernic 06130 Grasse, France
² OCA, Dpt. Gemini, UMR CNRS 6203, Le Mont-Gros, BP. 4229, 06304 Nice Cedex 04, France
³ OCA, Dpt. Cassiopee UMR 6202, Le Mont-Gros, BP. 4229, 06304 Nice Cedex 04, France

Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

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.