Study of wavefront sensing strategies for the future EST based on laboratory results.

  1. Luzma Montoya-Martinez 1
  2. Yolanda Martín Hernando 1
  3. Noelia Feijoo 1
  4. Jose Manuel González-Cava 1
  5. Haresh Chulani 1
  6. Angela Hernández Delgado 1
  7. Jorge Quintero 1
  8. Francisco González 1
  9. Miguel Núñez Cagigal 1
  10. Manuel Collados Vera 1
  1. 1 Instituto de Astrofísica de Canarias
    info

    Instituto de Astrofísica de Canarias

    Santa Cruz de Tenerife, España

    ROR https://ror.org/03cmntr54

Actas:
Wavefront Sensing in the VLT/ELT era VII

Año de publicación: 2022

Tipo: Póster de Congreso

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Resumen

The European Solar Telescope (EST) is a 4.2-metre telescope that will be equipped with a multi-conjugate adaptive optics (MCAO) system to provide a high spatial resolution over a circular field of view with 60” diameter. With the aim of evaluating and comparing the best adaptive optics strategies for EST, a testbed has been implemented in the laboratories of Instituto de Astrofísica de Canarias (IAC). The testbed is equipped with: an illumination system with point-like and extended sources capabilities coupled with a configurable turbulence simulator based on phase screens; a pupil-conjugated deformable mirror (DM) with 820 actuators; two correlation Shack-Hartmann wavefront sensors (SH-WFS); and the science detector. The bench is now ready to operate in Single Conjugate Adaptive Optics (SCAO) and Ground Layer Adaptive Optics (GLAO) modes. In this paper we present the results obtained with SCAO and GLAO techniques using center of gravity for point-like sources and correlation algorithms for extended sources for different seeing conditions.