Stellar interferometry in space - Fringe detection

Details Stellar interferometry in space - Fringe detection Stellar interferometry in space - Fringe detection

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jopt...16..269k&link_type=abstract

Journal of Optics (ISSN 0150-536X), vol. 16, Nov.-Dec. 1985, p. 269-276. In French.

Physics

Optics

2

Diffraction Patterns, Image Processing, Interferometry, Stellar Structure, Diameters, Hertzsprung-Russell Diagram, High Resolution, Stellar Magnitude

Scientific paper

A space-oriented fringe detection technique is presented based on high-angular-resolution astronomical observations made in the visible (0.002 arcsec) spectrum using the 26 cm CERGA Michelson two-telescope interferometer in southern France. This technique will allow for nonsegmented long exposure times on drifting fringes with the same results obtainable for stabilized fringes, and facilitates fringe detection without apparent visibility impairment by drifting fringes. A three-fold ground improvement and a 100-fold space improvement in detection limit are expected. For 25-cm ground detection, one hour of integration using the proposed three-dimensional fringe integration method has a limiting magnitude of 12 for the simple detection of unified contrast fringes.

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