ALOHA 1.55 μm Implementation on the CHARA Telescope Array : On-sky sensitivity tests

Romain Baudoin (1) , P. Darre , Jean-Thomas Gomes (1) , Fabert Marc (1) , Ludovic Grossard (1) , Laurent Delage (1) , François Reynaud (1) , N. Scott , J. Sturmann (2) , T. A. ten Brummelaar , Vincent Coude Du Foresto (3)

1 XLIM-PHOT - Photonique Fibre et Sources Cohérentes
2 CHARA - Center for High Angular Resolution Astronomy
3 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique

We intend to implement the ALOHA at 1.55μm up-conversion interferometer on the CHARA Array. After a full laboratory investigation, a sensitivity evaluation is conducted on several stars using a single interferometric arm in a photometric mode. The on-sky photometric results allows us to calibrate a numerical simulation of the interferometric configuration, and to predict the future performance of ALOHA at 1.55μm as a function of the seeing conditions.

Domaines: Optique / photonique

Romain Baudoin, P. Darre, Jean-Thomas Gomes, Fabert Marc, Ludovic Grossard, et al.. ALOHA 1.55 μm Implementation on the CHARA Telescope Array : On-sky sensitivity tests. Journal of Astronomical Instrumentation, 2016, ⟨10.1142/S2251171716500069⟩. ⟨hal-01321949⟩