Polar-interferometry: what can be learnt from the IOTA/IONIC experiment

Jean-Baptiste Le Bouquin; Karine Rousselet-Perraut; Jean-Philippe Berger; Emilie Herwats; Myriam Benisty; Olivier Absil; Denis Defrere; John Monnier; Wesley Traub

doi:10.1117/12.786377

28 July 2008 Polar-interferometry: what can be learnt from the IOTA/IONIC experiment

Jean-Baptiste Le Bouquin, Karine Rousselet-Perraut, Jean-Philippe Berger, Emilie Herwats, Myriam Benisty, Olivier Absil, Denis Defrere, John Monnier, Wesley Traub

Author Affiliations +

Proceedings Volume 7013, Optical and Infrared Interferometry; 70130F (2008) https://doi.org/10.1117/12.786377
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

We report the first near-IR polar-interferometric observations, performed at the IOTA array using its integrated optics combiner IONIC. Fringes have been obtained on calibration stars and resolved late-type giants. Optical modeling of the array and dedicated laboratory measures allowed us to confirm the good accuracy obtained on the calibrated polarized visibilities and closure phases. However, no evidences for polarimetric features at high angular resolution have been detected. The simulations and the results presented here open several perspectives for polar-interferometry, especially in the context of fibered, single-mode combiners.

Citation Download Citation

Jean-Baptiste Le Bouquin, Karine Rousselet-Perraut, Jean-Philippe Berger, Emilie Herwats, Myriam Benisty, Olivier Absil, Denis Defrere, John Monnier, and Wesley Traub "Polar-interferometry: what can be learnt from the IOTA/IONIC experiment", Proc. SPIE 7013, Optical and Infrared Interferometry, 70130F (28 July 2008); https://doi.org/10.1117/12.786377

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