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Improved algorithm for the transmittance estimation of spectra obtained with SOIR/Venus Express

Bertaux, Jean-Loup; Vandaele, Ann Carine; Ristic, Bojan +5 more

In-flight performance and calibration of SPICAV SOIR onboard Venus Express

Montmessin, Franck; Bertaux, Jean-Loup; Korablev, Oleg +13 more

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 wave…

Compact high-resolution spaceborne echelle grating spectrometer with acousto-optical tunable filter based order sorting for the infrared domain from 2.2 to 4.3 µm

Korablev, Oleg; Neefs, Eddy; Berkenbosch, Sophie +12 more

A new compact spaceborne high-resolution spectrometer developed for the European Space Agency's Venus Express spacecraft is described. It operates in the IR wavelength range of 2.2 to 4.3 µm and measures absorption spectra of minor constituents in the Venusian atmosphere. It uses a novel echelle grating with a groove density of 4 lines/mm in…