Star-pointing spectrometer for measurements of atmospheric ozone

Liisa Oikarinen; Heikki K. Saari; Kari Rainio; Jussi Graeffe; Heikki Astola

doi:10.1117/12.256135

31 October 1996 Star-pointing spectrometer for measurements of atmospheric ozone

Liisa Oikarinen, Heikki K. Saari, Kari Rainio, Jussi Graeffe, Heikki Astola

Proceedings Volume 2830, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research II; (1996) https://doi.org/10.1117/12.256135
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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.

Citation Download Citation

Liisa Oikarinen, Heikki K. Saari, Kari Rainio, Jussi Graeffe, and 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); https://doi.org/10.1117/12.256135

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