Data analysis for the CHARA Array CLIMB beam combiner

Theo A. ten Brummelaar; Judit Sturmann; Harold A. McAlister; Laszlo Sturmann; Nils H. Turner; Chris D. Farrington; Gail Schaefer; P. J. Goldfinger; Brian Kloppenborg

doi:10.1117/12.925023

12 September 2012 Data analysis for the CHARA Array CLIMB beam combiner

Theo A. ten Brummelaar, Judit Sturmann, Harold A. McAlister, Laszlo Sturmann, Nils H. Turner, Chris D. Farrington, Gail Schaefer, P. J. Goldfinger, Brian Kloppenborg

Author Affiliations +

Proceedings Volume 8445, Optical and Infrared Interferometry III; 84453C (2012) https://doi.org/10.1117/12.925023
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

The CHARA Array is a six telescope optical/IR interferometer run by the Center for High Angular Resolution Astronomy of Georgia State University and is located at Mount Wilson Observatory just to the north of Los Angeles California. The CHARA Array has the largest operational baselines in the world and has been in regular use for scientific observations since 2004. Our most sensitive beam combiner capable of measuring closure phases is the CLassic Interferometry with Multiple Baselines beam combiner known as CLIMB. In this paper we discuss the design and layout of CLIMB with a particular focus on the data analysis methodology. This analysis is presented in a very general form and will have applications in many other beam combiners. We also present examples of on sky data showing the precision and stability of both amplitude and closure phase measurements.

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Theo A. ten Brummelaar, Judit Sturmann, Harold A. McAlister, Laszlo Sturmann, Nils H. Turner, Chris D. Farrington, Gail Schaefer, P. J. Goldfinger, and Brian Kloppenborg "Data analysis for the CHARA Array CLIMB beam combiner", Proc. SPIE 8445, Optical and Infrared Interferometry III, 84453C (12 September 2012); https://doi.org/10.1117/12.925023

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