ALOHA/CHARA at 1.55 µm: sensitivity improvement and on-sky ability to detect astronomical sources in H band

P. Darré; L. Grossard; L. Delage; F. Reynaud; N. J. Scott; J. Sturmann; T. A. Ten Brummelaar

doi:10.1117/12.2232315

26 July 2016 ALOHA/CHARA at 1.55 μm: sensitivity improvement and on-sky ability to detect astronomical sources in H band

P. Darré, L. Grossard, L. Delage, F. Reynaud, N. J. Scott, J. Sturmann, T. A. Ten Brummelaar

Author Affiliations +

Proceedings Volume 9907, Optical and Infrared Interferometry and Imaging V; 990724 (2016) https://doi.org/10.1117/12.2232315
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

Citation Download Citation

P. Darré, L. Grossard, L. Delage, F. Reynaud, N. J. Scott, J. Sturmann, and T. A. Ten Brummelaar "ALOHA/CHARA at 1.55 μm: sensitivity improvement and on-sky ability to detect astronomical sources in H band", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990724 (26 July 2016); https://doi.org/10.1117/12.2232315

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available