1. Progress of the CHARA/SPICA project
- Author
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Pannetier, C., Mourard, D., Berio, P., Cassaing, F., Allouche, F., Anugu, N., Bailet, C., Brummelaar, T. ten, Dejonghe, J., Gies, D., Jocou, L., Kraus, S., Lacour, S., Lagarde, S., Bouquin, J. B. Le, Lecron, D., Monnier, J., Nardetto, N., Patru, F., Perraut, K., Petrov, R., Rousseau, S., Stee, P., Sturmann, J., and Sturmann, L.
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
CHARA/SPICA (Stellar Parameters and Images with a Cophased Array) is currently being developed at Observatoire de la C\^ote 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.
- Published
- 2021
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