Local suppression of diffraction effects to detect DIM stellar companions

Details Local suppression of diffraction effects to detect DIM stellar companions Local suppression of diffraction effects to detect DIM stellar companions

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..104..110d&link_type=abstract

Icarus (ISSN 0019-1035), vol. 104, no. 1, p. 110-117.

Physics

Optics

Companion Stars, Diffraction Patterns, Faint Objects, Image Resolution, Stellar Radiation, Adaptive Optics, Extrasolar Planets, Nonlinear Optics, Sky Surveys (Astronomy)

Scientific paper

A simple and practical method by which aperture wavefront changes can be calculated to achieve local suppression of diffraction effects to detect dim stellar companions is presented. The possibility of significantly reducing the effects of diffraction in local areas near the bright central peak is demonstrated. Application of this method to the W. M. Keck telescope actuated mirror segments may make it possible to obtain better sensitivity than previously assumed when attempting to detect planetary systems around nearby stars or dim stellar companions.

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