Simulation of the Lyot Coronograph

Details Simulation of the Lyot Coronograph Simulation of the Lyot Coronograph

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1295..235m&link_type=abstract

THE THIRD ALGERIAN WORKSHOP ON ASTRONOMY AND ASTROPHYSICS. AIP Conference Proceedings, Volume 1295, pp. 235-240 (2010).

Physics

Optics

Solar Corona, Circumstellar Matter, Fourier Transform Optics, Solar Eclipses, Corona, Circumstellar Shells, Clouds, And Expanding Envelopes, Circumstellar Masers, Fourier Optics, Eclipses, Transits, And Occultations

Scientific paper

A coronagraph is a device which blocks light from the center of the telescope beam while permitting light from surrounding sources to pass through relatively undisturbed. Coronographs are used to image the faint surroundings of stars. First used for solar corona observations, coronographs have revealed a circumstellar disk around the star. This work consists at carrying out a complete simulation of diffraction since the pupil of opening until the focal plan of the coronographic pupil. The principle of the stellar coronograph of Lyot can be described by employing the formalism of the Fourier optics. In this work, we have developed a numerical simulation to evaluate the performances of the Lyot coronograph. Lastly, we will show some results of simulations of the coronograph associated with optics.

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