High precision interferometer: MIRC with photometric channels

Xiao Che; John D. Monnier; Scott Webster

doi:10.1117/12.857848

21 July 2010 High precision interferometer: MIRC with photometric channels

Xiao Che, John D. Monnier, Scott Webster

Proceedings Volume 7734, Optical and Infrared Interferometry II; 77342V (2010) https://doi.org/10.1117/12.857848
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We have designed and constructed a prototype of Photometric Channels for Michigan Infrared Combiner (MIRC). Photometric Channels provide direct real-time measurements of fluxes from individual telescopes, improving the precision of visibility and close phase calibration. While this prototype has increased the MIRC data quality since the commissioning in August 2009, it leaves several issues unresolved, such as the changing polarization of starlight due to the CHARA beam train. We are planning to make an improvement of the prototype in conjunction with the six-beam combiner upgrade in the summer 2011.

Citation Download Citation

Xiao Che, John D. Monnier, and Scott Webster "High precision interferometer: MIRC with photometric channels", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77342V (21 July 2010); https://doi.org/10.1117/12.857848

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