Wide field AO correction: The large wavefront sensor detector of ARGOS

Gilles Orban De Xivry, Sebastian Rabien, Lothar Bari, Simone Esposito, Wolfgang Gaessler, Michael Hart, Matthias Deysenroth, Hans Gemperlein, Lothar Strüder, Julian Ziegleder

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations

Abstract

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 ShackHartmann 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.

Original languageEnglish (US)
Title of host publicationAdaptive Optics Systems II
EditionPART 1
DOIs
StatePublished - Oct 18 2010
EventAdaptive Optics Systems II - San Diego, CA, United States
Duration: Jun 27 2010Jul 2 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
NumberPART 1
Volume7736
ISSN (Print)0277-786X

Other

OtherAdaptive Optics Systems II
CountryUnited States
CitySan Diego, CA
Period6/27/107/2/10

Keywords

  • Adaptive optics wavefront detector
  • Centroids calculation
  • PnCCD

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    De Xivry, G. O., Rabien, S., Bari, L., Esposito, S., Gaessler, W., Hart, M., Deysenroth, M., Gemperlein, H., Strüder, L., & Ziegleder, J. (2010). Wide field AO correction: The large wavefront sensor detector of ARGOS. In Adaptive Optics Systems II (PART 1 ed.). [77365C] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7736, No. PART 1). https://doi.org/10.1117/12.857230