High angular resolution coronography for adaptive optics

Details High angular resolution coronography for adaptive optics High angular resolution coronography for adaptive optics

1995-09-14

arxiv.org/abs/astro-ph/9509072v1

Astronomy and Astrophysics

Astrophysics

23 pages including figures and tables, uuencoded gz-compressed postscript

Scientific paper

Recent adaptive optics systems in astronomy achieve high-angular resolution. With the extreme stability of the images, detection at very low fluxes can be reached using a coronograph at the diffraction limit of the telescopes. This paper is an overview of the issues of stellar coronography used at the diffraction limit. Image formation through such a system is illustrated by numerical simulations. The description of a coronograph implemented on the VLT adaptive optics prototype, COME-ON, is presented as well as the first observations.

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