Status of Subaru laser guide star AO system

Hideki Takami, Stephen Colley, Matt Dinkins, Michael Eldred, Olivier Guyon, Taras Golota, Masayuki Hattori, Yutaka Hayano, Meguru Ito, Masanori Iye, Shin Oya, Yoshihiko Saito, Makoto Watanabe

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

28 Scopus citations


The laser guide star adaptive optics (AO188) system for Subaru Telescope is presented. The system will be installed at the IR Nasmyth platform of Subaru 8 m telescope, whereas the current AO system with 36 elements is operating at the Cassegrain focus. The new AO system has a 188 element wavefront curvature sensor with photon counting APD modules and 188 element bimorph mirror. The laser guide star system has a 4.5 W solid state sum-frequency laser on the Nasmyth platform. The laser launching telescope with 50 cm aperture will be installed at behind the secondary mirror. The laser beam will be transferred to the laser launching telescope using photonic crystal single mode fiber cable. The instrument with the AO system is IRCS, infrared camera and spectrograph which has been used for Cassegrain AO system and new instrument, HiCIAO, high dynamic range infrared camera for exsolar planet detection. The first light of the AO system is planned in 2006.

Original languageEnglish (US)
Title of host publicationAdvances in Adaptive Optics II
StatePublished - 2006
EventAdvances in Adaptive Optics II - Orlando, FL, United States
Duration: May 24 2006May 31 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6272 I
ISSN (Print)0277-786X


OtherAdvances in Adaptive Optics II
Country/TerritoryUnited States
CityOrlando, FL


  • Bimorph mirror
  • Curvature sensor
  • Laser guide star
  • Nasmyth focus

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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