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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 742778.0, MPI für Astronomie / Publikationen_mpia
Experiments of two pupil lateral motion tracking algorithms using a Shack-Hartmann sensor
Authors:Dai, X.; Hippler, S.; Gendron, E.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:Journal of Modern Optics
Volume:64
Issue / Number:2
Start Page:127
End Page:137
Audience:Not Specified
Abstract / Description:Pupil stability is one of the factors which limit the performance and operational stability of adaptive optics (AO) systems. This paper analyses two pupil-tracking methods to measure the lateral pupil shift: the first one utilizes the fluxes in all outer edge sub-apertures of a Shack-Hartmann sensor and the second one utilizes the real-time interaction matrix used in an AO system. Experiments with 9×9 Shack-Hartmann sensor are conducted to verify both pupil-tracking algorithms. The results show that both algorithms are effective, after two correction steps, the residual pupil shift is reduced to less than 5% of a Shack-Hartmann sub-aperture.
Free Keywords:Adaptive optics; Pupil-tracking; Shack-Hartmann wavefront sensor; Interaction matrix
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0950-0340 %R 10.1080/09500340.2016.1212415
URL:http://adsabs.harvard.edu/abs/2017JMOp...64..127D
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