A new frontier for J-band interferometry: dual-band NIR interferometry with MIRC-X

Aaron Labdon , John D. Monnier , Stefan Kraus , Jean-Baptiste Le Bouquin (1) , Benjamin R. Setterholm , Narsireddy Anugu , Theo ten Brummelaar , Cyprien Lanthermann , Claire L. Davies , Jacob Ennis , Tyler Gardner , Gail H. Schaefer , Laszlo Sturmann , Judit Sturmann

1 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble

In this contribution we report on our work to increase the spectral range of the Michigan Infrared Combiner- eXeter (MIRC-X) instrument at the CHARA array to allow for dual H and J band interferometric observations. We comment on the key science drivers behind this project and the methods of characterisation and correction of instrumental birefringence and dispersion. In addition, we report on the first results from on-sky commissioning in November 2019.

Keywords: Astrophysics - Instrumentation and Methods for Astrophysics

Domains: Sciences of the Universe [physics]

Aaron Labdon, John D. Monnier, Stefan Kraus, Jean-Baptiste Le Bouquin, Benjamin R. Setterholm, et al.. A new frontier for J-band interferometry: dual-band NIR interferometry with MIRC-X. Proceedings of the SPIE, 0000, à renseigner, Unknown Region. ⟨10.1117/12.2561371⟩. ⟨insu-03705144⟩