Results from a multi aperture Fizeau interferometer ground testbed: demonstrator for a future space-based interferometer

Nicola Baccichet; Amandine Caillat; Eddy Rakotonimbahy; Kjetil Dohlen; Giorgio Savini; Michel Marcos

doi:10.1117/12.2233686

4 August 2016 Results from a multi aperture Fizeau interferometer ground testbed: demonstrator for a future space-based interferometer

Nicola Baccichet, Amandine Caillat, Eddy Rakotonimbahy, Kjetil Dohlen, Giorgio Savini, Michel Marcos

Author Affiliations +

Proceedings Volume 9907, Optical and Infrared Interferometry and Imaging V; 99072K (2016) https://doi.org/10.1117/12.2233686
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

In the framework of the European FP7-FISICA (Far Infrared Space Interferometer Critical Assessment) program, we developed a miniaturized version of the hyper-telescope to demonstrate multi-aperture interferometry on ground. This setup would be ultimately integrated into a CubeSat platform, therefore providing the first real demonstrator of a multi aperture Fizeau interferometer in space. In this paper, we describe the optical design of the ground testbed and the data processing pipeline implemented to reconstruct the object image from interferometric data. As a scientific application, we measured the Sun diameter by fitting a limb-darkening model to our data. Finally, we present the design of a CubeSat platform carrying this miniature Fizeau interferometer, which could be used to monitor the Sun diameter over a long in-orbit period.

Citation Download Citation

Nicola Baccichet, Amandine Caillat, Eddy Rakotonimbahy, Kjetil Dohlen, Giorgio Savini, and Michel Marcos "Results from a multi aperture Fizeau interferometer ground testbed: demonstrator for a future space-based interferometer", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99072K (4 August 2016); https://doi.org/10.1117/12.2233686

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