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SOIR – Solar Occultation InfraRed Spectrometer (wavelength range: 2,2 – 4,3µm)

SOIR is a compact spaceborne high resolution multispectral spectrometer developed for ESA’s Venus Express (VEX) spacecraft and integrated in the SPICAV instrument.
SOIR operates in the IR wavelength range of 2.2 to 4.3µm and measures absorption spectra of minor constituents in the Venusian atmosphere. It uses an echelle grating, in combination with an IR Acousto-Optic Tunable Filter (AOTF) for order sorting and an actively cooled HgCdTe Focal Plane Array of 256 by 320 pixels.

SOIR was developed by Belgian partners on behalf of ESA. OIP, as a subcontractor to BIRA-IASB [B], was responsible for the design and development of the optical system of the SOIR spectrometer, as well as the electronic assembly and harnessing.
The project was funded by ESA/PRODEX.

Status: Mission completed. End of Mission reached in 2015

Type: Multi-spectral

Application: Venus observation


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