Correlation measurement and group delay tracking in optical stellar interferometry with a noisy detector

Details Correlation measurement and group delay tracking in optical stellar interferometry with a noisy detector Correlation measurement and group delay tracking in optical stellar interferometry with a noisy detector

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.285..135t&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 285, Issue 1, pp. 135-150.

Astronomy and Astrophysics

Astronomy

6

Instrumentation: Detectors, Instrumentation: Interferometers, Methods: Observational, Techniques: Interferometric.

Scientific paper

The use of a noisy detector for group delay tracking and/or correlation measurement in optical stellar interferometry is analysed. Expressions are derived for the signal-to-noise ratio of correlation measurement and the probability of tracking loss in the presence of detector noise. It is shown that such a detector can be suitable for either measurement. For example, the high quantum efficiency of modern charge-coupled devices (CCDs) can offset the readout noise to a large extent, making them a good candidate for use in fringe tracking.

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