Abstract
An imaging meridional spectrometer intended for studying the spectral composition and spatial distribution of night airglow and aurora is described. The spectrometer allows obtainment of 2D images of the major arc of the celestial hemisphere from 0° to 180° in the wavelength range 420–875 nm. The instrument has been developed in a field version, is operable under any meteorological conditions, and can operate both independently and as a component of a network data-acquisition system. Instrumental distortions of the obtained 2D images are analyzed and methods developed for their elimination are presented. The parameters of an ST-10XME CCD camera incorporated in the S180 spectrometer have been studied, and a mathematical model describing its characteristics has been developed. The software package developed for the spectrometer enables processing of the yielded data in a semiautomatic mode with allowance for errors induced by instrumental distortions. Primary processing of the results of spectrometric measurements of auroras at the Spitsbergen archipelago has been performed.
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References
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Original Russian Text © A.V. Roldugin, Yu.V. Fedorenko, O.M. Sharovarova, S.V. Pil’gaev, Zh.V. Dashkevich, 2007, published in Pribory i Tekhnika Eksperimenta, 2007, No. 5, pp. 130–137.