A New Frontier for J-band Interferometry: Dual-band NIRInterferometry with MIRC-X
Aaron Labdon, John D. Monnier, Stefan Kraus, Jean-Baptiste Le Bouquin,, Benjamin R. Setterholm, Narsireddy Anugu, Theo ten Brummelaar, Cyrien, Lanthermann, Claire L. Davies, Jacob Ennis, Tyler Gardener, Gail H. Schaefer,, Lazlo Sturmann, Judit Sturmann
TL;DR
This paper discusses extending the MIRC-X instrument at the CHARA array to enable dual H and J band interferometry, including technical challenges, methods, and initial on-sky results.
Contribution
It introduces a new dual-band interferometry capability for MIRC-X, expanding spectral range and demonstrating initial on-sky performance.
Findings
Successful extension to dual H and J band operation
Characterization and correction of instrumental birefringence
First on-sky commissioning results obtained
Abstract
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.
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