Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5962..166b&link_type=abstract
Building European OLED Infrastructure. Edited by Pearsall, Thomas P.; Halls, Jonathan. Proceedings of the SPIE, Volume 5962, p
Astronomy and Astrophysics
Astrophysics
Scientific paper
The effects of atmospheric differential refraction on astrophysical measurements are well known. In particular, as a ray of light passes through the atmosphere, its direction is altered by the effects of atmospheric refraction. The amount of this effect depends basically on the variation of the refractive index along the path of the ray. The real accuracy needed in the atmosphere model and in the calculation of the correction to be applied is of course, considerably worse, especially at large zenith angles. On the VLT Survey Telescope (VST) the use of an Atmospheric Dispersion Corrector (ADC) is foreseen at a wide zenith distance range. This paper describes the software design and implementation aspects regarding the analytical correction law discovered to correct the refraction effect during observations with VST.
Brescia Massimo
Cortecchia Fausto
Marra Gabriella
Perrotta Francesca
Schipani Pietro
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