Star-pointing spectrometer for measurements of atmospheric ozone

Details Star-pointing spectrometer for measurements of atmospheric ozone Star-pointing spectrometer for measurements of atmospheric ozone

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2830..224o&link_type=abstract

Proc. SPIE Vol. 2830, p. 224-235, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research II, Pa

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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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