The achromatic design of an atmospheric dispersion corrector for extremely large telescopes

Bahrami, Mehdi and Goncharov, Alexander V. (2011) The achromatic design of an atmospheric dispersion corrector for extremely large telescopes. Optics Express, 19(18), pp. 17099-17113. ISSN (online) 1094-4087

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For off-zenith observations with ground-based astronomical telescopes, the effect of atmospheric dispersion relative to diffraction on image size increases with telescope diameter. Correction of atmospheric dispersion in extremely large telescopes (ELTs) might become critical. A common solution for ELTs is to use linear atmospheric dispersion correctors (ADCs). In spite of their simplicity, the intrinsic chromatic aberrations of linear ADCs could render diffraction-limited imaging impossible when used in a fast focus. The chromatic problems of the linear ADC in ELTs can be resolved by replacing the linear ADC by the achromatic ADC designs presented here, which provide diffraction-limited image quality and offer several opto-mechanical advantages over linear ADCs.

Item Type: Article
Additional Information: This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. This work was supported by Science Foundation Ireland [grant number: 07/IN.1/1906].
Research Area: Physics
Faculty, School or Research Centre: Faculty of Science, Engineering and Computing (until 2017)
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Depositing User: Mehdi Bahrami
Date Deposited: 22 Feb 2013 11:23
Last Modified: 22 Feb 2013 11:29

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