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THERMAP: a mid-infrared spectro-imager for space missions to small bodies in the inner solar system

Experimental Astronomy, ISSN: 1572-9508, Vol: 41, Issue: 1-2, Page: 95-115
2016
  • 4
    Citations
  • 0
    Usage
  • 16
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    4
    • Citation Indexes
      4
  • Captures
    16

Article Description

We present THERMAP, a mid-infrared spectro-imager for space missions to small bodies in the inner solar system, developed in the framework of the MarcoPolo-R asteroid sample return mission. THERMAP is very well suited to characterize the surface thermal environment of a NEO and to map its surface composition. The instrument has two channels, one for imaging and one for spectroscopy: it is both a thermal camera with full 2D imaging capabilities and a slit spectrometer. THERMAP takes advantage of the recent technological developments of uncooled microbolometer arrays, sensitive in the mid-infrared spectral range. THERMAP can acquire thermal images (8–18 μm) of the surface and perform absolute temperature measurements with a precision better than 3.5 K above 200 K. THERMAP can acquire mid-infrared spectra (8–16 μm) of the surface with a spectral resolution Δλ of 0.3 μm. For surface temperatures above 350 K, spectra have a signal-to-noise ratio >60 in the spectral range 9–13 μm where most emission features occur.

Bibliographic Details

O. Groussin; J. L. Reynaud; P. Levacher; P. E. Blanc; E. Brageot; A. Delsanti; K. Dohlen; D. Ferrand; L. Jorda; P. Lamy; J. Le Merrer; C. Rossin; P. Vernazza; S. Vives; J. Licandro; M. Reyes García-Talavera; V. Alí-Lagoa; J. J. Diaz Garcia; E. Joven Álvarez; J. Helbert; J. Knollenberg; E. Kührt; B. Davidsson; M. Delbó; M. Deleuze; G. Mas; S. F. Green; B. Rozitis; E. Lellouch; B. Marty; J. Sunshine

Springer Science and Business Media LLC

Physics and Astronomy; Earth and Planetary Sciences

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