High precision interferometer: MIRC with photometric channels

Details High precision interferometer: MIRC with photometric channels High precision interferometer: MIRC with photometric channels

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010spie.7734e..91c&link_type=abstract

Optical and Infrared Interferometry II. Edited by Danchi, William C.; Delplancke, Françoise; Rajagopal, Jayadev K. Proceeding

Physics

4

Scientific paper

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.

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