Accurate astronomical atmospheric dispersion models in ZEMAX

From National Research Council Canada

DOIResolve DOI: http://doi.org/10.1117/12.2057072
AuthorSearch for: 1 
Name affiliation
  1. National Research Council Canada. National Science Infrastructure
TypeArticle
Proceedings titleSPIE - International Society for Optical Engineering. Proceedings
ConferenceAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 23 June 2014 through 27 June 2014
ISSN0277-786X
ISBN9780819496195
Volume9151
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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Record created2015-07-14
Record modified2017-04-24
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