THERMAP: a mid-infrared spectro-imager for space missions to small bodies in the inner solar system
2016 (English)In: Experimental astronomy (Print), ISSN 0922-6435, E-ISSN 1572-9508, Vol. 41, no 1, 95-115 p.Article in journal (Refereed) PublishedText
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 > 60 in the spectral range 9-13 mu m where most emission features occur.
Place, publisher, year, edition, pages
2016. Vol. 41, no 1, 95-115 p.
Mid-infrared, Spectro-imager, Microbolometer, MarcoPolo-R, ESA's Cosmic Vision, Sample return
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:uu:diva-279580DOI: 10.1007/s10686-015-9475-9ISI: 000369518700005OAI: oai:DiVA.org:uu-279580DiVA: diva2:908385