Laser guide star facility for LTAO and GLAO at Subaru telescope

Etsuko Mieda, Yosuke Minowa, Celine D’Orgeville, Nicholas Herrald, Yoko Tanaka, Yoshiyuki Doi, Lucio Ramos, Matthew Wung, Christophe Clergeon, Yoshito Ono, Takashi Hattori, Yutaka Hayano, Masayuki Akiyama, Hiroshige Yoshida

Research output: Contribution to conferencePaperpeer-review

Abstract

In this paper, we present a laser guide star facility (LGSF) aspect of the upcoming laser tomography adaptive optics (LTAO) and ground layer (GL) AO systems at Subaru Telescope. For the LTAO system, a TOPTICA laser will be split into four beams and launched all together from one center-launched laser launch telescope (LLT). For the GLAO system, we will use one more TOPTICA laser, split each into two, and launch them by four separate LLTs from the center section of the telescope to construct a wide asterism. We expect to install the first TOPTICA laser in a single-beam configuration for single conjugated (SC) AO in 2020, a four-beam configuration for LTAO in 2022, and a wide-asterism configuration for GLAO in 2025.

Original languageEnglish
Publication statusPublished - 2019
Event6th International Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2019 - Quebec City, Canada
Duration: 2019 Jun 92019 Jun 14

Conference

Conference6th International Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2019
CountryCanada
CityQuebec City
Period19/6/919/6/14

Keywords

  • Adaptive optics
  • Laser guide star

ASJC Scopus subject areas

  • Space and Planetary Science
  • Control and Systems Engineering
  • Mechanical Engineering
  • Electronic, Optical and Magnetic Materials
  • Astronomy and Astrophysics
  • Instrumentation

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