NGS2: A focal plane array upgrade for the GeMS multiple tip-Tilt wavefront sensor

François Rigaut, Ian Price, Céline D'Orgeville, Francis Bennet, Nick Herrald, Nicolas Paulin, Kristina Uhlendorf, Vincent Garrel, Gaetano Sivo, Vanessa Montes, Chad Trujillo

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

6 Scopus citations


NGS2 is an upgrade for the multi-natural guide star tip-Tilt & plate scale wavefront sensor for GeMS (Gemini Multi-Conjugate Adaptive Optics system). It uses a single Nüvü HNü-512 Electron-Multiplied CCD array that spans the entire GeMS wavefront sensor focal plane. Multiple small regions-of-interest are used to enable frame rates up to 800Hz. This set up will improve the optical throughput with respect to the current wavefront sensor, as well as streamline acquisition and allow for distortion compensation.

Original languageEnglish (US)
Title of host publicationAdaptive Optics Systems V
EditorsEnrico Marchetti, Jean-Pierre Veran, Laird M. Close
ISBN (Electronic)9781510601970
StatePublished - 2016
Externally publishedYes
EventAdaptive Optics Systems V - Edinburgh, United Kingdom
Duration: Jun 26 2016Jul 1 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceAdaptive Optics Systems V
Country/TerritoryUnited Kingdom


  • Adaptive Optics
  • Detectors
  • EMCCDs
  • Focal Plane Sensing
  • Multi-Conjugate
  • Natural Guide Star
  • Tip-Tilt Wavefront Sensor
  • Wavefront Sensing

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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