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Communication Dans Un Congrès Année : 2020

Progress of the CHARA/SPICA project

Denis Mourard
Douglas Gies
  • Fonction : Auteur
Sylvestre Lacour
Nicolas Nardetto
Romain Petrov
Rousseau Sylvain
  • Fonction : Auteur
  • PersonId : 1094543
Ph. Stee
Judit Sturmann
  • Fonction : Auteur
Laszlo Sturmann
  • Fonction : Auteur

Résumé

CHARA/SPICA (Stellar Parameters and Images with a Cophased Array) is currently being developed at Observatoire de la Cote d’Azur. It will be installed at the visible focus of the CHARA Array by the end of 2021. It has been designed to perform a large survey of fundamental stellar parameters with, in the possible cases, a detailed imaging of the surface or environment of stars. To reach the required precision and sensitivity, CHARA/SPICA combines a low spectral resolution mode R = 140 in the visible and single-mode fibers fed by the AO stages of CHARA. This setup generates additional needs before the interferometric combination: the compensation of atmospheric refraction and longitudinal dispersion, and the fringe stabilization. In this paper, we present the main features of the 6-telescopes fibered visible beam combiner (SPICA-VIS) together with the first laboratory and on-sky results of the fringe tracker (SPICA-FT). We describe also the new fringe-tracker simulator developed in parallel to SPICA-FT.

Dates et versions

hal-03182504 , version 1 (26-03-2021)

Identifiants

Citer

Cyril Pannetier, Denis Mourard, Philippe Bério, Frédéric Cassaing, Fatmé Allouche, et al.. Progress of the CHARA/SPICA project. SPIE Astronomical Telescopes + Instrumentation 2020, Dec 2020, Online Only, United States. pp.114460T, ⟨10.1117/12.2560625⟩. ⟨hal-03182504⟩
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