Establishing Visible Interferometer System Responses: Resolved and Unresolved Calibrators

Details Establishing Visible Interferometer System Responses: Resolved and Unresolved Calibrators Establishing Visible Interferometer System Responses: Resolved and Unresolved Calibrators

2005-08-11

arxiv.org/abs/astro-ph/0508266v1

Astronomy and Astrophysics

Astrophysics

20 pages, 7 figures, to be published in the PASP

Scientific paper

10.1086/449603

The propagation of errors through the uniform disk visibility function is examined. Implications of those errors upon measures of absolute visibility through optical and near-infrared interferometers are considered within the context of using calibration stars to establish system visibilities for these instruments. We suggest a simple ratio test to establish empirically whether or not the measured visibilities produced by such an instrument are relative (errors dominated by calibrator angular size prediction error) or absolute (errors dominated by measurement error).

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