MOAO test bench in Tohoku University

Masayuki Akiyama, Yoshito Ono, Shin Oya, Kazuhiro Hane, Tong Wu

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

Abstract

We are conducting AO development activities in Tohoku university targeting Multi-Object Adaptive Optics (MOAO) system for the next generation ground-based large telescopes. In order to evaluate the accuracy of the tomographic estimation, which is a key of an MOAO system, we assembled a test optical bench to simulate an MOAO system in our optical lab. The system consists with 1) four light sources with single-mode fibers simulating three guide stars and one target object, 2) multiple phase plates simulating atmospheric turbulence structure, and 3) 4 Shack-Hartmann wavefront sensors. Wavefront data from the sensors are reduced with the tomographic algorithm. The evaluation of the accuracy of the tomographic wavefront reconstruction is underway. Additionally, evaluation of an open-loop control of an AO system is underway using an independent module. Once the accuracy of the open-loop control is established, the module will be installed in the tomography test bench and the entire system will be evaluated as an MOAO system. In parallel, we are conducting a development of a large stroke (20μm) Micro Electro Mechanical Systems (MEMS) deformable mirror with large number of elements (<3000). Current status of the development is described.

Original languageEnglish
Title of host publicationAdaptive Optics Systems III
DOIs
Publication statusPublished - 2012 Dec 1
EventAdaptive Optics Systems III - Amsterdam, Netherlands
Duration: 2012 Jul 12012 Jul 6

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8447
ISSN (Print)0277-786X

Other

OtherAdaptive Optics Systems III
CountryNetherlands
CityAmsterdam
Period12/7/112/7/6

Keywords

  • MEMS deformable mirror
  • Multi-Object adaptive optics

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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