THERMAP: a mid-infrared spectro-imager for space missions to small bodies in the inner solar system
O. Groussin
(1)
,
J. Licandro
(2)
,
J. Helbert
(3)
,
J. L. Reynaud
(1)
,
P. Levacher
(1)
,
M. Reyes Garcia-Talavera
(2)
,
V. Ali-Lagoa
(2)
,
P. E. Blanc
(1)
,
E. Brageot
(1)
,
B. Davidsson
(4)
,
M. Delbo
(5)
,
M. Deleuze
(6)
,
A. Delsanti
(1)
,
J. J. Diaz Garcia
(2)
,
K. Dohlen
(1)
,
D. Ferrand
(1)
,
S. F. Green
(7)
,
L. Jorda
(1)
,
E. Joven Alvarez
(2)
,
J. Knollenberg
(8)
,
E. Kuehrt
(9)
,
P. Lamy
(1)
,
E. Lellouch
(10)
,
J. Le Merrer
(1)
,
B. Marty
(11)
,
G. Mas
(6)
,
C. Rossin
(1)
,
B. Rozitis
(7)
,
J. Sunshine
(12)
,
P. Vernazza
(1)
,
S. Vives
(1)
1
LAM -
Laboratoire d'Astrophysique de Marseille
2 IAC - Instituto de Astrofisica de Canarias
3 DLR Institute of Planetary Research
4 Department of Physics and Astronomy [Uppsala]
5 Observatoire de la Côte d'Azur
6 CNES - Centre National d'Études Spatiales [Toulouse]
7 PSSRI - Planetary and Space Sciences Research Institute [Milton Keynes]
8 DLR Institut für Planetenforschung
9 DLR - German Aerospace Center
10 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
11 CRPG - Centre de Recherches Pétrographiques et Géochimiques
12 Department of Astronomy [College Park]
2 IAC - Instituto de Astrofisica de Canarias
3 DLR Institute of Planetary Research
4 Department of Physics and Astronomy [Uppsala]
5 Observatoire de la Côte d'Azur
6 CNES - Centre National d'Études Spatiales [Toulouse]
7 PSSRI - Planetary and Space Sciences Research Institute [Milton Keynes]
8 DLR Institut für Planetenforschung
9 DLR - German Aerospace Center
10 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
11 CRPG - Centre de Recherches Pétrographiques et Géochimiques
12 Department of Astronomy [College Park]
O. Groussin
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- PersonId : 1028639
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M. Delbo
- Fonction : Auteur
- PersonId : 740910
- IdHAL : marco-delbo
- ORCID : 0000-0002-8963-2404
- IdRef : 235427179
K. Dohlen
- Fonction : Auteur
- PersonId : 839061
- ORCID : 0000-0001-8248-2397
L. Jorda
- Fonction : Auteur
- PersonId : 746464
- IdHAL : laurent-jorda
- ORCID : 0000-0001-8735-3308
- IdRef : 180975161
B. Marty
- Fonction : Auteur
- PersonId : 737523
- IdHAL : bernard-marty
- ORCID : 0000-0001-7936-1519
- IdRef : 061395196
B. Rozitis
- Fonction : Auteur
- PersonId : 780569
- ORCID : 0000-0001-9893-241X
P. Vernazza
- Fonction : Auteur
- PersonId : 738592
- IdHAL : pierre-vernazza
- ORCID : 0000-0002-2564-6743
- IdRef : 112732976
Résumé
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 mu m) 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 mu m) of the surface with a spectral resolution Delta lambda of 0.3 mu m. For surface temperatures above 350 K, spectra have a signal-to-noise ratio \textgreater 60 in the spectral range 9-13 mu m where most emission features occur.