JouFLU: upgrades to the fiber linked unit for optical recombination (FLUOR) interferometric beam combiner.

N. J. Scott; E. Lhomé; T. A. ten Brummelaar; V. Coudé du Foresto; R. Millan-Gabet; J. Sturmann; L. Sturmann

doi:10.1117/12.2057129

24 July 2014 JouFLU: upgrades to the fiber linked unit for optical recombination (FLUOR) interferometric beam combiner.

N. J. Scott, E. Lhomé, T. A. ten Brummelaar, V. Coudé du Foresto, R. Millan-Gabet, J. Sturmann, L. Sturmann

Proceedings Volume 9146, Optical and Infrared Interferometry IV; 91461A (2014) https://doi.org/10.1117/12.2057129
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

The Fiber Linked Unit for Optical Recombination (FLUOR) is a precision interferometric beam combiner operating at the CHARA Array on Mt. Wilson, CA. It has recently been upgraded as part of a mission known as “Jouvence of FLUOR” or JouFLU. As part of this program JouFLU has new mechanic stages and optical payloads, new alignment systems, and new command/control software. Furthermore, new capabilities have been implemented such as a Fourier Transform Spectrograph (FTS) mode and spectral dispersion mode. These upgrades provide new capabilities to JouFLU as well as improving statistical precision and increasing observing efficiency. With these new systems, measurements of interferometric visibility to the level of 0.1% precision are expected on targets as faint as 6th magnitude in the K band. Here we detail the upgrades of JouFLU and report on its current status.

Citation Download Citation

N. J. Scott, E. Lhomé, T. A. ten Brummelaar, V. Coudé du Foresto, R. Millan-Gabet, J. Sturmann, and L. Sturmann "JouFLU: upgrades to the fiber linked unit for optical recombination (FLUOR) interferometric beam combiner.", Proc. SPIE 9146, Optical and Infrared Interferometry IV, 91461A (24 July 2014); https://doi.org/10.1117/12.2057129

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KEYWORDS

Cameras

Interferometry

Fourier transforms

Mirrors

Visibility

Optical alignment

Telescopes

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