Pupil plane versus image plane in Michelson stellar interferometry

Details Pupil plane versus image plane in Michelson stellar interferometry Pupil plane versus image plane in Michelson stellar interferometry

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986josaa...3.2160r&link_type=abstract

Optical Society of America, Journal, A: Optics and Image Science (ISSN 0740-3232), vol. 3, Dec. 1986, p. 2160-2166.

Physics

Optics

8

Astrometry, Astronomical Photometry, Michelson Interferometers, Stellar Spectrophotometry, Diffraction Patterns, Electromagnetic Noise, Integral Equations, Photons, Signal To Noise Ratios

Scientific paper

An S/N value is calculated for the fringe visibility in a two-aperture Michelson stellar interferometer, assuming ideal photon-counting detection and only-image motion or guiding errors, as well as the detection of a fringe pattern either in the image plane or in the pupil plane. With no image motion, the two configurations yield exactly the same S/N value; when image motion increases, image-plane observations always degrade more rapidly than pupil-plane observations. A significant difference is noted in the case of bright objects where pupil-plane observations are fully insensitive to image motion.

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