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Proceedings Paper

TMT studies on thermal seeing modeling: mirror seeing model validation
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Paper Abstract

Mirror and dome seeing are critical effects influencing the optical performance of large ground based telescopes. Computational Fluid Dynamics (CFD) and optical models that simulate mirror seeing in the Thirty Meter Telescope (TMT) are presented. The optical model used to quantify the effects of seeing utilizes the spatially varying refractive index resulting from the expected theoretical flow field, while the developed CFD post-processing model estimates the corresponding CN2 distribution. The seeing effects corresponding to a flat plate are calculated. Plots of seeing versus different temperature differences, velocities and plate lengths are generated. The discussion presented contains comparisons of the results from the two models with published empirical relations.

Paper Details

Date Published: 23 June 2006
PDF: 6 pages
Proc. SPIE 6271, Modeling, Systems Engineering, and Project Management for Astronomy II, 627115 (23 June 2006); doi: 10.1117/12.670278
Show Author Affiliations
Konstantinos Vogiatzis, AURA New Initiatives Office, NOAO (United States)
Robert Upton, AURA New Initiatives Office, NOAO (United States)


Published in SPIE Proceedings Vol. 6271:
Modeling, Systems Engineering, and Project Management for Astronomy II
Martin J. Cullum; George Z. Angeli, Editor(s)

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