Development of an experimental optical adaptive optics for small telescopes

Takeo Minezaki, Yukihiro Kono, Leonardo Vanzi, Abner Zapata, Mauricio Flores, Sebastian Ramirez, Keiichi Ohnaka

Producción científica: Contribución a los tipos de informe/libroContribución a la conferenciarevisión exhaustiva


We are developing an optical adaptive optics (AO) system for small telescopes. An AO instrument in optical wavelength mounted on a 1-2 m class telescope located at a good seeing site will make it possible to achieve high angular resolution of 0.1-0.2 arcsec. Such capability will enable us to perform unique astronomical programs, as well as to provide good opportunity in education for both astronomy and engineering. In order to examine the AO capability on small telescopes, we developed an experimental AO instrument, in which inexpensive commercial devices are extensively used to reduce cost for development. We designed the weight and the physical size so small that it is portable and easy to be mounted on a small telescope, which is a unique feature of our AO instrument. After the engineering observations performed in Japan, we mounted it on the 1-m telescope of the European Southern Observatory of La Silla in Chile in March 2018 to examine the performance. We found that there were approximately 4 times and 5 times improvements in the full-width-halfmaximum (FWHM) and Strehl ratio of the PSF from the natural seeing, respectively. The best AO-corrected PSF obtained during the observation achieved FWHM=0.18 arcsec and the Strehl ratio = 0.18. Based on the detailed analysis of the timeseries wavefront and deformable-mirror-operation data, further improvement in AO performance is expected by adjustment of the system parameters. We succeeded in demonstrating the feasibility of an inexpensive optical AO system for small telescopes.

Idioma originalInglés
Título de la publicación alojadaAdaptive Optics Systems VII
EditoresLaura Schreiber, Dirk Schmidt, Elise Vernet
ISBN (versión digital)9781510636835
EstadoPublicada - 2020
Publicado de forma externa
EventoAdaptive Optics Systems VII 2020 - Virtual, Online, Estados Unidos
Duración: 14 dic. 202022 dic. 2020

Serie de la publicación

NombreProceedings of SPIE - The International Society for Optical Engineering
ISSN (versión impresa)0277-786X
ISSN (versión digital)1996-756X


ConferenciaAdaptive Optics Systems VII 2020
País/TerritorioEstados Unidos
CiudadVirtual, Online

Áreas temáticas de ASJC Scopus

  • Materiales electrónicos, ópticos y magnéticos
  • Física de la materia condensada
  • Informática aplicada
  • Matemáticas aplicadas
  • Ingeniería eléctrica y electrónica


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