Share Email Print
cover

Proceedings Paper

Long baseline interferometry in the visible: the FRIEND project
Author(s): P. Berio; Y. Bresson; J. M. Clausse; D. Mourard; J. Dejonghe; A. Duthu; S. Lagarde; A. Meilland; K. Perraut; Isabelle Tallon-Bosc; N. Nardetto; A. Spang; C. Bailet; A. Marcotto; O. Chesneau; P. Stee; P. Feautrier; P. Balard; J. L. Gach
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In the next 2 or 3 years, the two major interferometric arrays, VLTI and CHARA, will equip their telescopes of 1.8m and 1m respectively with Adaptive Optics (AO hereafter) systems. This improvement will permit to apply with a reasonable e_ciency in the visible domain, the principle of spatial filtering with single mode fibers demonstrated in the near-infrared. It will clearly open new astrophysical fields by taking benefit of an improved sensitivity and state-of-the-art precision and accuracy on interferometric observables. To prepare this future possibility, we started the development of a demonstrator called FRIEND (Fibered and spectrally Resolved Interferometric Experiment - New Design). FRIEND combines the beams coming from 3 telescopes after injection in single mode optical fibers and provides some spectral capabilities for characterization purposes as well as photometric channels. It operates in the R spectral band (from 600nm to 750nm) and uses the world's fastest and more sensitive analogic detector OCAM2. Tests on sky at the focus of the CHARA interferometer are scheduled for December 2014. In this paper, we present the first interferometric tests of the OCAM2 detector performed on CHARA in November 2012 and the concept, the expected performance and the opto-mechanical design of FRIEND.

Paper Details

Date Published: 24 July 2014
PDF: 11 pages
Proc. SPIE 9146, Optical and Infrared Interferometry IV, 914616 (24 July 2014); doi: 10.1117/12.2054890
Show Author Affiliations
P. Berio, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
Y. Bresson, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
J. M. Clausse, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
D. Mourard, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
J. Dejonghe, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
A. Duthu, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
S. Lagarde, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
A. Meilland, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
K. Perraut, Institut de Planétologie et d’Astrophysique de Grenoble, CNRS, Univ. de Lyon (France)
Isabelle Tallon-Bosc, Ctr. de Recherche Astronomique de Lyon (France)
N. Nardetto, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
A. Spang, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
C. Bailet, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
A. Marcotto, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
O. Chesneau, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
P. Stee, Lab. Joseph-Louis Lagrange, CNRS, Univ. de Nice Sophia-Antipolis (France)
P. Feautrier, Institut de Planétologie et d’Astrophysique de Grenoble, CNRS, Univ. de Lyon (France)
P. Balard, Lab. d'Astrophysique de Marseille (France)
J. L. Gach, Lab. d'Astrophysique de Marseille (France)


Published in SPIE Proceedings Vol. 9146:
Optical and Infrared Interferometry IV
Jayadev K. Rajagopal; Michelle J. Creech-Eakman; Fabien Malbet, Editor(s)

© SPIE. Terms of Use
Back to Top