28 July 2010 Atmospheric dispersion correction for the Subaru AO system
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Abstract
In this paper, we present the science path ADC unit (atmospheric dispersion corrector) for the AO188 Adaptive Optics System of the Subaru Telescope. The AO188 instrument is a curvature-based Adaptive Optics system with 188 subapertures and achieves good correction down to shorter wavelengths like J-band. At these wavelengths, the atmospheric dispersion within the band becomes significant and thus a correction of the atmospheric dispersion is essential to reach diffraction-limited image quality. We give an overview of the requirements, the final optical and mechanical design of the ADC unit, as well as the structure of its control software.
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Sebastian Egner, Yuji Ikeda, Makoto Watanabe, Y. Hayano, T. Golota, M. Hattori, M. Ito, Y. Minowa, S. Oya, Y. Saito, H. Takami, M. Iye, "Atmospheric dispersion correction for the Subaru AO system", Proc. SPIE 7736, Adaptive Optics Systems II, 77364V (28 July 2010); doi: 10.1117/12.856579; https://doi.org/10.1117/12.856579
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