Abstract

There is no unique definition of the fringe contrast in a random structure such as the image given by a Michelson stellar interferometer. A new definition is given here which leads to a contrast value independent of the seeing conditions provided the wave-front perturbations on the two apertures are uncorrelated. Moreover, if simultaneous observations through a single aperture are available, the seeing effects can be completely removed.

© 1976 Optical Society of America

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