Estimation of fringe parameters

David Mozurkewich; J. Thomas Armstrong; G. Charmaine Gilbreath; Thomas A. Pauls

doi:10.1117/12.552416

20 October 2004 Estimation of fringe parameters

David Mozurkewich, J. Thomas Armstrong, G. Charmaine Gilbreath, Thomas A. Pauls

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.552416
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

In this report we explore replacing the widely used optimal V² estimator with a model-fitting approach. We show that it is possible to fit the fringe power spectra with a physically reasonable model. This approach eliminates the biggest problem with the standard squared visibility estimator - determining the additive, dector-noise bias. We examine the dependence of the bias on count rate for consistency betwee on- and off-fringe measurements. The change of bias with fringe frequency provides additional information about the performance of the detectors. We have also applied a similar approach to the bias correction for the triple product, with comparable results.

Citation Download Citation

David Mozurkewich, J. Thomas Armstrong, G. Charmaine Gilbreath, and Thomas A. Pauls "Estimation of fringe parameters", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.552416

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