The Compact Ultraviolet to Visible Imaging Spectrometer (CUVIS) onboard the DAVINCI Mission.

The Compact Ultraviolet to Visible Imaging Spectrometer (CUVIS) is an innovative small footprint UV to visible dual-band dispersion and imaging spectrometer with spectral range 200570 nm that was selected as the Technology Demonstration Option (TDO) for the DAVINCI mission and will complement the science obtained from the baseline mission instruments. CUVIS will provide high resolution UV spectra of Venus atmosphere and imaging of cloud top structure across the daylit hemisphere. The spectrometers primary goal is to investigate radiative balance, cloud properties and chemistry of Venuss atmosphere and address the vexing scientific problem of the unknown UV absorber/s at the cloud tops [1, 2]. As a TDO, CUVIS will also do inflight demonstration of key technologies suitable for any NASA missions: freeform optics that enable high spatial and spectral resolution measurements in a compact design and advanced onboard data processing technologies, based on artificial intelligence (AI) hardware and software, for near real-time atmospheric parameters retrieval. References [1] Perez-Hoyos, S., Sanchez-Lavega, A., Garcia-Munoz, A., Irwin, P. G. J., Peralta, J., Holsclaw, G., ... Sanz-Requena, J. F. (2018). Venus upper clouds and the UV absorber from MESSENGER/MASCS observations. Journal of Geophysical Research: Planets Planets, 123, 145 162. https://doi.org/10.1002/2017JE005406 [2] Emmanuel Marcq, Lucio Baggio, Franck Lefevre, Franck Montmessin, Jean-Loup Bertaux. Reanalysis of the SPICAV-UV nadir spectra on the day side of Venus: SO2, O3 and other UV absorbers. European Planetary Science Congress 2017, Sep 2017, Riga, Latvia. pp. PSC2017-165. ffinsu-01597554f