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Proceedings Paper

Accurate astronomical atmospheric dispersion models in ZEMAX
Author(s): P. Spanò
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Paper Abstract

ZEMAX provides a standard built-in atmospheric model to simulate atmospheric refraction and dispersion. This model has been compared with other ones to assess its intrinsic accuracy, critical for very demanding application like ADCs for AO-assisted extremely large telescopes. A revised simple model, based on updated published data of the air refractivity, is proposed by using the “Gradient 5” surface of Zemax. At large zenith angles (65 deg), discrepancies up to 100 mas in the differential refraction are expected near the UV atmospheric transmission cutoff. When high-accuracy modeling is required, the latter model should be preferred.

Paper Details

Date Published: 28 July 2014
PDF: 8 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 915157 (28 July 2014); doi: 10.1117/12.2057072
Show Author Affiliations
P. Spanò, NRC - Herzburg Institute of Astrophysics (Canada)

Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)

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