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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 14,
  • Issue 10,
  • pp. 100102-
  • (2016)

Prototype of solar ground layer adaptive optics at the 1 m New Vacuum Solar Telescope

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Abstract

A prototype of a solar ground-layer adaptive optics (GLAO) system, which consists of a multi-direction correlating Shack–Hartmann wavefront sensor with 30 effective subapertures and about a 1 arcmin field of view (FoV) in each subaperture, a deformable mirror with 151 actuators conjugated to the telescope entrance pupil, and a custom-built real-time controller based on field-programmable gate array and multi-core digital signal processor (DSP), is implemented at the 1 m New Vacuum Solar Telescope at Fuxian Solar Observatory and saw its first light on January 12th, 2016. The on-sky observational results show that the solar image is apparently improved in the whole FoV over 1 arcmin with the GLAO correction.

© 2016 Chinese Laser Press

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