VST telescope: the control software design for the atmospheric dispersion correction

M. Brescia; P. Schipani; G. Marra; G. Spirito; F. Cortecchia; F. Perrotta

doi:10.1117/12.618895

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14 October 2005 VST telescope: the control software design for the atmospheric dispersion correction

M. Brescia, P. Schipani, G. Marra, G. Spirito, F. Cortecchia, F. Perrotta

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Proceedings Volume 5962, Optical Design and Engineering II; 59620K (2005) https://doi.org/10.1117/12.618895
Event: Optical Systems Design 2005, 2005, Jena, Germany

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.

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M. Brescia, P. Schipani, G. Marra, G. Spirito, F. Cortecchia, and F. Perrotta "VST telescope: the control software design for the atmospheric dispersion correction", Proc. SPIE 5962, Optical Design and Engineering II, 59620K (14 October 2005); https://doi.org/10.1117/12.618895

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