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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 559376.0, MPI für Astronomie / Publikationen_mpia
Wide-field AO correction: the large wavefront sensor detector of ARGOS
Authors:Orban de Xivry, G.; Rabien, S.; Barl, L.; Esposito, S.; Gaessler, W.; Hart, M.; Deysenroth, M.; Gemperlein, H.; Strüder, L.; Ziegleder, J.
Publisher:SPIE
Date of Publication (YYYY-MM-DD):2010
Title of Proceedings:Adaptive Optics Systems II
Start Page:77365C-77365C
End Page:10
Volume (in Series):7736
Name of Conference/Meeting:Adaptive Optics Systems II
Audience:Not Specified
Abstract / Description:Wide field correction allowing large field to benefit from adaptive optics (AO) is challenging in more than one aspect. We address here the wavefront sensor (WFS) detector side where, in addition to high sensitivity and low noise, the simultaneous detection of multiple laser beacons and the large number of sub-apertures in a Shack-Hartmann WFS require a detector to have a large imaging area while preserving a very high readout frame rate. The detector considered has a frame area of 264×264 pixels with a pixel size of 48 microns. By splitting the image into two framestore areas during readout, repetition rates of more than 1000 frames per second can be achieved. The electronic noise contribution is approximately 3 electrons at the operating temperature. We therefore analyze its performances, showing it fulfills the requirements, in a wavefront sensing application: the measurement of centroids in the case of a Shack-Hartmann WFS for the Argos AO project.
Comment of the Author/Creator:Date: 2010, July 1, 2010
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/aCbs/2010SPIE.7736E.178O
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