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Proceedings Paper

ALOHA/CHARA at 1.55 μm: sensitivity improvement and on-sky ability to detect astronomical sources in H band
Author(s): P. Darré; L. Grossard; L. Delage; F. Reynaud; N. J. Scott; J. Sturmann; T. A. Ten Brummelaar
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Paper Abstract

The interferometric concept named ALOHA (Astronomical Light Optical Hybrid Analysis) offers an alternative for high resolution imaging in the mid-infrared domain by shifting the astronomical light to shorter wavelength where optical guided components from telecommunications are available and efficient. A prototype with two arms converting a signal from 1.55 μm to 630 nm is used to validate the concept in laboratory and on-sky. Thanks to collaboration with the CHARA team, photometric tests were achieved with a single arm of the interferometer and have allowed to predict instrument performance in its interferometric configuration in order to obtain first fringes in H band.

Paper Details

Date Published: 26 July 2016
PDF: 8 pages
Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990724 (26 July 2016); doi: 10.1117/12.2232315
Show Author Affiliations
P. Darré, XLIM Institut de Recherche (France)
L. Grossard, XLIM Institut de Recherche (France)
L. Delage, XLIM Institut de Recherche (France)
F. Reynaud, XLIM Institut de Recherche (France)
N. J. Scott, CHARA (United States)
NASA Ames Research Ctr. (United States)
J. Sturmann, CHARA (United States)
T. A. Ten Brummelaar, CHARA (United States)


Published in SPIE Proceedings Vol. 9907:
Optical and Infrared Interferometry and Imaging V
Fabien Malbet; Michelle J. Creech-Eakman; Peter G. Tuthill, Editor(s)

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