31 October 1996 Star-pointing spectrometer for measurements of atmospheric ozone
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Abstract
Optical measurement of the density of ozone and other atmospheric species at night is possible by using stars as light sources. The Technical Research Centre of Finland (VTT) has built a star-pointing spectrometer, which records stellar spectra by a 2D CCD-array. The spectrometer has a 'slitless' design, so it can measure the absolute intensity level of a stellar spectrum attenuated by the atmosphere. A spectral inversion method designed for the satellite-based instrument GOMOS is applied for constituent retrieval form stellar spectra measured on ground. Analysis of simulated measurements shows that when averaging over one night the total ozone column can be measured by the VTT spectrometer at an accuracy of 2-3 percent.
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Liisa Oikarinen, Liisa Oikarinen, Heikki K. Saari, Heikki K. Saari, Kari Rainio, Kari Rainio, Jussi Graeffe, Jussi Graeffe, Heikki Astola, Heikki Astola, } "Star-pointing spectrometer for measurements of atmospheric ozone", Proc. SPIE 2830, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research II, (31 October 1996); doi: 10.1117/12.256135; https://doi.org/10.1117/12.256135
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