Progress of the CHARA/SPICA project
Cyril Pannetier
(1, 2)
,
Denis Mourard
(1)
,
Philippe Bério
(1)
,
Frédéric Cassaing
(2)
,
Fatmé Allouche
(1)
,
Narsireddy Anugu
(3, 4, 5)
,
Christophe Bailet
(1)
,
Theo ten Brummelaar
(6)
,
Julien Dejonghe
(1)
,
Douglas Gies
(6)
,
Laurent Jocou
(7)
,
Stefan Kraus
(5)
,
Sylvestre Lacour
(8)
,
Stéphane Lagarde
(1)
,
Jean-Baptiste Le Bouquin
(7)
,
Daniel Lecron
(1)
,
John Monnier
(4)
,
Nicolas Nardetto
(1)
,
Fabien Patru
(1)
,
Karine Perraut
(7)
,
Romain Petrov
(1)
,
Rousseau Sylvain
(1)
,
Ph. Stee
(1)
,
Judit Sturmann
(6)
,
Laszlo Sturmann
(6)
Cyril Pannetier
- Fonction : Auteur
- PersonId : 749127
- IdHAL : cyril-pannetier
- ORCID : 0000-0001-9288-5739
Denis Mourard
- Fonction : Auteur
- PersonId : 755620
- ORCID : 0000-0001-7425-5055
- IdRef : 050203479
Sylvestre Lacour
- Fonction : Auteur
- PersonId : 739267
- IdHAL : sylvestre-lacour
- ORCID : 0000-0002-6948-0263
- IdRef : 129379085
Nicolas Nardetto
- Fonction : Auteur
- PersonId : 740753
- IdHAL : nicolas-nardetto
- ORCID : 0000-0002-7399-0231
- IdRef : 103220917
Romain Petrov
- Fonction : Auteur
- PersonId : 741590
- IdHAL : romain-petrov
- ORCID : 0000-0003-4759-6051
Ph. Stee
- Fonction : Auteur
- PersonId : 744913
- IdHAL : philippe-stee
- ORCID : 0000-0001-8220-0636
- IdRef : 061743798
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.