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Proceedings Paper

Effects of air pressure, temperature, and relative humidity on seeing
Author(s): Daniel R. Blanco
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Paper Abstract

Seeing is generally caused by non-homogeneous variations in the refractive index of the column of air in the observed light path. The refractive index is affected by wavelength, air pressure, temperature and relative humidity. In this paper the Cauchy-Lorenz formula for the refractive index of air is evaluated to find the relative dependence of seeing on each of these parameters. A standard atmospheric model is used to evaluate the effect of altitude on each term, and from this an expression for the variation of seeing as a function of altitude is derived.

Paper Details

Date Published: 2 August 2000
PDF: 7 pages
Proc. SPIE 4004, Telescope Structures, Enclosures, Controls, Assembly/Integration/Validation, and Commissioning, (2 August 2000); doi: 10.1117/12.393931
Show Author Affiliations
Daniel R. Blanco, EOS Technologies Inc. (United States)


Published in SPIE Proceedings Vol. 4004:
Telescope Structures, Enclosures, Controls, Assembly/Integration/Validation, and Commissioning
Thomas A. Sebring; Torben Andersen, Editor(s)

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