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Proceedings Paper

Middle-infrared echelle cross-dispersion spectrometer ACS-MIR for the ExoMars Trace Gas Orbiter
Author(s): Alexander Trokhimovskiy; Oleg Korablev; Yuriy S. Ivanov; I. I. Siniyavsky; Anna Fedorova; Alexander V. Stepanov; Andrei Yu. Titov; Andrei Patrakeev; Pavel P. Moiseev; Tatiana O. Kozlova; Franck Montmessin
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Paper Abstract

The middle-infrared (MIR) echelle spectrometer is one channel of the Atmospheric Chemistry Suite (ACS) package dedicated for the studies of the Martian atmosphere on board ExoMars Trace Gas Orbiter (TGO) planned for launch in 2016. The MIR channel of ACS is a cross-dispersion echelle instrument dedicated to solar occultation measurements in the range of 2.3–4.2 μm with the resolving power of ~50,000. MIR is dedicated to sensitive measurements of trace gases. The MIR channel consists of entry optics, an echelle spectrometer with a 140x250 mm grating and two-mirror collimator, two secondary steerable gratings, and a cryogenically cooled MCT detector array with proximity optics. The spectrometer operates in high orders of diffraction, allowing to acquire up to 17 orders at one detector frame, and to cover simultaneously ~300-nm spectral interval within the spectral range. The mechanism allows moving the secondary grating with a characteristic time of ~0.1 s. This concept is novel for space application. The instrument is a complete block with power and data interfaces, and the overall mass of 12 kg. The protoflight model of MIR is completed, integrated within the ACS suite, and is undergoing tests at the spacecraft.

Paper Details

Date Published: 1 September 2015
PDF: 7 pages
Proc. SPIE 9608, Infrared Remote Sensing and Instrumentation XXIII, 960808 (1 September 2015); doi: 10.1117/12.2190359
Show Author Affiliations
Alexander Trokhimovskiy, Space Research Institute (Russian Federation)
Oleg Korablev, Space Research institute (Russian Federation)
Moscow Institute of Physics and Technology (Russian Federation)
Yuriy S. Ivanov, Main Astronomical Observatory, NAS (Ukraine)
I. I. Siniyavsky, Main Astronomical Observatory, NAS (Ukraine)
Anna Fedorova, Space Research Institute (Russian Federation)
Alexander V. Stepanov, Moscow State Univ. (Russian Federation)
Andrei Yu. Titov, Space Research Institute (Russian Federation)
Andrei Patrakeev, Space Research institute (Russian Federation)
Pavel P. Moiseev, Astron Electronics (Russian Federation)
Tatiana O. Kozlova, Space Research Institute (Russian Federation)
Franck Montmessin, LATMOS, CNRS (France)


Published in SPIE Proceedings Vol. 9608:
Infrared Remote Sensing and Instrumentation XXIII
Marija Strojnik Scholl; Gonzalo Páez, Editor(s)

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