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1. NOMAD spectrometer on the ExoMars trace gas orbiter mission: part 1—design, manufacturing and testing of the infrared channels

Author

Frank Daerden, Eddy Equeter, Tanguy Thibert, W. Moelans, Lieve De Vos, D. Nevejans, Beatriz Aparicio del Moral, Jurgen De Neef, Gustavo Alonso-Rodrigo, Bojan Ristic, Ana Vicario-Arroyo, Manish R. Patel, José-Maria Jeronimo-Zafra, Ann Carine Vandaele, Michel Jankowski, Javier Cubas, Rachel Drummond, Dave Kendall, Sabrina Bonnewijn, Isabel Pérez-Grande, Jean-François Jamoye, Pierre-Yves Puech, M. Carmen Pastor-Morales, Emiel Van Ransbeeck, Ann Baeke, Alexander Soenen, Gerry Pieck, Jeroen Maes, Fermín Navarro-Medina, Roland Clairquin, Cédric Depiesse, Ian Thomas, Nico Van Vooren, Giancarlo Bellucci, Gian Paolo Candini, L. Aballea, Sophie Berkenbosch, Jose-Juan Lopez-Moreno, Jon Ward, S. Delanoye, Alejandro M. Gomez-San-Juan, David Diez, Rosario Sanz, Juan Manuel Gómez-López, Eddy Neefs, R. Morales, Stefan Lesschaeve, Julio Rodriguez-Gomez, and Stijn Glorieux

Subjects
Spectrometer, business.industry, Infrared, Materials Science (miscellaneous), medicine.disease_cause, Industrial and Manufacturing Engineering, Trace gas, law.invention, Orbiter, Optics, Filter (video), law, medicine, Nadir, Environmental science, Business and International Management, business, Ultraviolet, Echelle grating, Remote sensing
Abstract

NOMAD is a spectrometer suite on board ESA’s ExoMars trace gas orbiter due for launch in January 2016. NOMAD consists of two infrared channels and one ultraviolet and visible channel allowing the instrument to perform observations quasi-constantly, by taking nadir measurements at dayside and nightside, and during solar occultations. In this paper, the design, manufacturing, and testing of the two infrared channels are described. We focus upon the optical working principle in these channels, where an echelle grating, used as a diffractive element, is combined with an acousto-optical tunable filter, used as a diffraction order sorter.

Published
2015

2. Compact high-resolution spaceborne echelle grating spectrometer with acousto-optical tunable filter based order sorting for the infrared domain from 22 to 43 μm

Author

Oleg Korablev, Jean-Pierre Dubois, Lieve De Vos, Benny Bach, Emiel Van Ransbeeck, I. Vinogradov, Roland Clairquin, Stijn Glorieux, Ann Baeke, Yuri Kalinnikov, Dennis Nevejans, Eddy Neefs, Eric Villard, W. Moelans, Sophie Berkenbosch, Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), OIP Sensor Systems, Space Research Institute of the Russian Academy of Sciences (IKI), Russian Academy of Sciences [Moscow] (RAS), Service d'aéronomie (SA), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Absorption spectroscopy, Spectrometer, business.industry, Infrared, Materials Science (miscellaneous), 01 natural sciences, Industrial and Manufacturing Engineering, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], 010309 optics, Optics, Cardinal point, Band-pass filter, Filter (video), 0103 physical sciences, Optoelectronics, Business and International Management, business, 010303 astronomy & astrophysics, Diffraction grating, Echelle grating
Abstract

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 microm 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 a Littrow configuration in combination with an IR acousto-optic tunable filter for order sorting and an actively cooled HgCdTe focal plane array of 256 by 320 pixels. It is designed to obtain an instrument line profile of 0.2 cm(-1). First results on optical and spectral properties are reported.

Published
2006
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