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Proceedings Paper

VST telescope: the control software design for the atmospheric dispersion correction
Author(s): M. Brescia; P. Schipani; G. Marra; G. Spirito; F. Cortecchia; F. Perrotta
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Paper Abstract

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.

Paper Details

Date Published: 14 October 2005
PDF: 11 pages
Proc. SPIE 5962, Optical Design and Engineering II, 59620K (14 October 2005); doi: 10.1117/12.618895
Show Author Affiliations
M. Brescia, INAF – Capodimonte Astronomical Observatory (Italy)
P. Schipani, INAF – Capodimonte Astronomical Observatory (Italy)
G. Marra, INAF – Capodimonte Astronomical Observatory (Italy)
G. Spirito, INAF – Capodimonte Astronomical Observatory (Italy)
F. Cortecchia, INAF – Capodimonte Astronomical Observatory (Italy)
F. Perrotta, INAF – Capodimonte Astronomical Observatory (Italy)


Published in SPIE Proceedings Vol. 5962:
Optical Design and Engineering II
Laurent Mazuray; Rolf Wartmann, Editor(s)

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