Atmospheric dispersion correction for the Subaru AO system

Details Atmospheric dispersion correction for the Subaru AO system Atmospheric dispersion correction for the Subaru AO system

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010spie.7736e.164e&link_type=abstract

Adaptive Optics Systems II. Edited by Ellerbroek, Brent L.; Hart, Michael; Hubin, Norbert; Wizinowich, Peter L. Proceedings o

Physics

Optics

Scientific paper

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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