Accurate astronomical atmospheric dispersion models in ZEMAX

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1117/12.2057072
AuthorSearch for: 1
Name affiliation
  1. National Research Council of Canada. National Science Infrastructure
FormatText, Article
Proceedings titleAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Series titleProceedings of SPIE; no. 9151
ConferenceAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation, June 23-27, 2014
ISSN0277-786X
1996-756X
ISBN9780819496195
Article number915157
SubjectAdaptive optics; Refraction; Telescopes; ADC; Atmospheric dispersion; Atmospheric model; Atmospheric refractions; TMT; ZEMAX; Atmospheric movements
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.
Publication date
PublisherSPIE
LanguageEnglish
Peer reviewedYes
NPARC number21275558
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