A wide-field Imaging FTS for the Molecular Hydrogen Explorer space mission (H2EX)

J.-P. Maillard; F. Boulanger; Y. Longval; J.-J. Fourmond; M. Bouzit; C. Dumesnil

doi:10.1117/12.789057

12 July 2008 A wide-field Imaging FTS for the Molecular Hydrogen Explorer space mission (H2EX)

J.-P. Maillard, F. Boulanger, Y. Longval, J.-J. Fourmond, M. Bouzit, C. Dumesnil

Proceedings Volume 7010, Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter; 701026 (2008) https://doi.org/10.1117/12.789057
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The Molecular Hydrogen Explorer (H2EX) proposed for the 2015 - 2025 Cosmic Vision Call issued by ESA in 2007 was designed to make surveys of the molecular gas from its first rotational lines in various extragalactic and galactic sites. The design study led to the proposition of a mid-infrared (8 to 29 μm) Imaging Fourier transform Spectrometer (IFTS) making possible integral field spectroscopy on a 20' wide field and a maximum resolution up to 3×10⁴ at 10 μm. To reach this goal, an all-mirror payload was outlined, made of a 1.2m telescope matched to a dual output interferometer, imaging the field on two 1024×1024 Si:As IBC detectors. The payload was designed to re-use the platform developed for the Planck mission. Such a wide field and high spectral resolution IFTS on a large spectral domain can have further applications, with the necessary adaptation to each case, for future large aperture cryogenic telescopes in the mid-infrared, or in the near-infrared behind future ELTs, in a site like Dome C in Antarctica, and out of astronomy, for remote sensing of Earth atmosphere.

Citation Download Citation

J.-P. Maillard, F. Boulanger, Y. Longval, J.-J. Fourmond, M. Bouzit, and C. Dumesnil "A wide-field Imaging FTS for the Molecular Hydrogen Explorer space mission (H2EX)", Proc. SPIE 7010, Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter, 701026 (12 July 2008); https://doi.org/10.1117/12.789057

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