On the fringe visibility in a Michelson stellar interferometer

Details On the fringe visibility in a Michelson stellar interferometer On the fringe visibility in a Michelson stellar interferometer

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976josa...66..580r&link_type=abstract

Optical Society of America, Journal, vol. 66, June 1976, p. 580-584.

Physics

Optics

13

Astronomical Photometry, Michelson Interferometers, Speckle Patterns, Stellar Radiation, Turbulence Effects, Visibility, Apertures, Atmospheric Optics, Atmospheric Turbulence, Mathematical Models, Point Sources, Wiener Filtering

Scientific paper

Speckle interferometry theory is applied to Michelson interferometry, and the fringe contribution in the stellar image Wiener spectrum is calculated as a function of aperture diameter and seeing conditions for an unresolved star. Computing the Wiener spectrum for a turbulence-degraded point-source image facilitates quantitative determination of fringe visibility in Michelson stellar interferometry. Fringe contributions to the image Wiener spectrum become independent of aperture diameters at large apertures. The results encourage the use of long-baseline Michelson interferometry with large telescopes for quantitative measurements of very-small-scale light distributions in stellar sources, with negligible image degradation by atmospheric turbulence.

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