Mars Atmosphere As Seen By Atmospheric Chemistry Suite
Onboard Exomars Tgo
O. Korablev, Space Research Institute Of The Russian Academy Of Sciences (Iki Ras), Moscow, Russia, F. Montmessin,
Latmos/Ipsl, Uvsq Université Paris-Saclay, Sorbonne Université, Cnrs, Guyancourt, France, The Acs Team

Introduction: The Atmospheric Chemistry Suite
(Acs) Instrument On Board The Exomars Tgo Dedicated Atmospheric Spacecraft Has Been Successfully
Operating Since March 2018, Delivering Unique New
Data. Acs Includes Three Spectroscopic Channels
Covering From The Near Ir Through Thermal Ir Wavelengths. Acs Nir Is A Near-Ir Echelle Spectrometer
With Filtering Of Diffraction Orders Using An Aotf.
Acs Mir Is A Crossed Dispersion Echelle Spectrometer, And Acs Tirvim Is A Fourier Spectrometer [1].
Mir And Nir Are Used In Solar Occultation. These
Channels Remain In Perfect Health; Their Operation Is
Being Continued. Compared To Mir, Whose Secondary Dispersion Grating Has To Be Put In One Selected
Out Of 11 Positions, Mir Delivers A Homogeneous
And Denser Dataset. The Cryogenic Cooler Of Tirvim
Stopped Working In The End Of 2019, Approaching Its
Expected Lifetime And Short Of One Full My. The
Channel Collected A Corpus Of Atmospheric Spectra,