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Proceedings Paper

EChO SWiR: exoplanet atmospheres characterization observatory sort-wave infrared channel of the EChO payload
Author(s): Gonzalo Ramos Zapata; Tomás Belenguer; Ana Balado; Javier Barandiarán; Iñaki Armendáriz; Manuel Reina; César Arza; Santiago Rodríguez; Maria Ángeles Alcacera; José A. Fernández; Elisa Muñoz; Giovanna Tinetti; Paul Eccleston; Bruce Swinyard; Marc Ferlet; Ian Bryson; María Rosa Zapatero
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Paper Abstract

EChO, a space mission for exoplanets exploration, is considered the next step for planetary atmospheres characterization. It will be a dedicated observatory to uncover a large selected sample of planets spanning a wide range of masses (from gas giants to super-Earths) and orbital temperatures (from hot to habitable). All targets move around stars of spectral types F, G, K, and M. EChO will provide an unprecedented view of the atmospheres of planets in the solar neighbourhood. The consortium formed by various institutions of different countries is proposing an integrated spectrometer payload for EChO covering the wavelength interval 0.4 to 16 µm. This instrument is subdivided into 4 channels: a visible channel, which includes a fine guidance system (FGS) and a VIS spectrometer, a near infrared channel (SWiR), a middle infrared channel (MWiR), and a long wave infrared module (LWiR). In addition, it contains a common set of optics spectrally dividing the wavelength coverage and injecting the combined light of parent stars and their exoplanets into the different channels. The proposed payload meets all of the key performance requirements detailed in the ESA call for proposals as well as all scientific goals. EChO payload will be based on different spectrometers covering the spectral range mentioned above. Among them, SWiR spectrometer will work from 2.45 microns to 5.45 microns. In this paper, the optical and mechanical designs of the SWiR channel instrument, including the evolution of the different trades followed and the current identification of critical points, are reported on.

Paper Details

Date Published: 21 September 2012
PDF: 12 pages
Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84422V (21 September 2012); doi: 10.1117/12.925957
Show Author Affiliations
Gonzalo Ramos Zapata, Instituto Nacional de Técnica Aeroespacial (Spain)
Tomás Belenguer, Instituto Nacional de Técnica Aeroespacial (Spain)
Ana Balado, Instituto Nacional de Técnica Aeroespacial (Spain)
Javier Barandiarán, Instituto Nacional de Técnica Aeroespacial (Spain)
Iñaki Armendáriz, Instituto Nacional de Técnica Aeroespacial (Spain)
Manuel Reina, Instituto Nacional de Técnica Aeroespacial (Spain)
César Arza, Instituto Nacional de Técnica Aeroespacial (Spain)
Santiago Rodríguez, Instituto Nacional de Técnica Aeroespacial (Spain)
Maria Ángeles Alcacera, Instituto Nacional de Técnica Aeroespacial (Spain)
José A. Fernández, Instituto Nacional de Técnica Aeroespacial (Spain)
Elisa Muñoz, Instituto Nacional de Técnica Aeroespacial (Spain)
Giovanna Tinetti, Univ. College London (United Kingdom)
Paul Eccleston, Rutherford Appleton Lab. (United Kingdom)
Bruce Swinyard, Univ. College London (United Kingdom)
Rutherford Appleton Lab. (United Kingdom)
Marc Ferlet, Rutherford Appleton Lab. (United Kingdom)
Ian Bryson, UK Astronomy Technology Ctr. (United Kingdom)
María Rosa Zapatero, Ctr. de Astrobiología, Instituto Nacional de Técnica Aeroespacial (Spain)


Published in SPIE Proceedings Vol. 8442:
Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
Mark C. Clampin; Giovanni G. Fazio; Howard A. MacEwen; Jacobus M. Oschmann, Editor(s)

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