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Proceedings Paper

Wavefront sensor optimization in astronomical applications
Author(s): Gerard Lelievre; J. Sebag; D. Bauduin; F. Fidouh; J. L. Lebrun; B. S. Servan
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Paper Abstract

Microlens arrays made by engraving photoresist coatings are suitable for astronomical applications, especially in the Shack-Hartmann type of wavefront sensor. Their characteristics have to be carefully chosen to fit the turbulence strength. Our instrument, composed of a photon-counting device and a Shack-Hartmann sensor, allows synchronous recordings of short-exposure images and their corresponding wavefronts. In post-processing, the point spread functions (PSF) are calculated and used to deconvolve the direct images. A new real- time centroiding device transforms this experiment into a quasi real-time imaging corrective system.

Paper Details

Date Published: 1 January 1993
PDF: 8 pages
Proc. SPIE 1781, Specification and Measurement of Optical Systems, (1 January 1993); doi: 10.1117/12.140973
Show Author Affiliations
Gerard Lelievre, Observatoire de Paris (France)
J. Sebag, Observatoire de Paris (France)
D. Bauduin, Observatoire de Paris (France)
F. Fidouh, Observatoire de Paris (France)
J. L. Lebrun, Observatoire de Paris (France)
B. S. Servan, Observatoire de Paris (France)

Published in SPIE Proceedings Vol. 1781:
Specification and Measurement of Optical Systems
Lionel R. Baker, Editor(s)

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