Physics – Optics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apopt..47.2252m&link_type=abstract
Applied Optics IP, vol. 47, Issue 13, pp.2252-2265
Physics
Optics
8
Atmospheric Composition, Diffraction Gratings, Remote Sensing And Sensors, Spectrometers And Spectroscopic Instrumentation, Acousto-Optical Devices, Spectroscopy, Infrared
Scientific paper
Solar occultation in the infrared, part of the Spectoscopy for Investigation of Characteristics of the Atmosphere of Venus (SPICAV) instrument onboard Venus Express, combines an echelle grating spectrometer with an acousto-optic tunable filter (AOTF). It performs solar occultation measurements in the IR region at high spectral resolution. The wavelength range probed allows a detailed chemical inventory of Venus's atmosphere above the cloud layer, highlighting the vertical distribution of gases. A general description of the instrument and its in-flight performance is given. Different calibrations and data corrections are investigated, in particular the dark current and thermal background, the nonlinearity and pixel-to-pixel variability of the detector, the sensitivity of the instrument, the AOTF properties, and the spectral calibration and resolution.
Belyaev Denis
Berkenbosch Sophie
Bertaux Jean Loup
Carine Vandaele Ann
Clairquin Roland
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