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28 August 2014 Exoplanet atmospheres Characterization Observatory payload short-wave infrared channel: EChO SWiR
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Abstract
EChO (Exoplanet atmospheres Characterization Observatory), a proposal for exoplanets exploration space mission, is considered the next step for planetary atmospheres characterization. It would 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 would provide an unprecedented view of the atmospheres of planets in the solar neighbourhood. The consortium formed by various institutions of different countries proposed as ESA M3 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 is based on different spectrometers covering the spectral range mentioned above. Among them, SWiR spectrometer would work from 2.45 microns to 5.45 microns. In this paper, the optical and mechanical designs of the SWiR channel instrument are reported on.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gonzalo Ramos Zapata, Tomás Belenguer, Ana Balado, José Miguel Encinas, Iñaki Armendáriz, Ángel Carretero, César Arza, María Ángeles Alcacera, José A. Fernández, Elisa Muñoz, Giovanna Tinetti, Paul Eccleston, Bruce Swinyard, Kevin Middleton, Ian Bryson, and María Rosa Zapatero "Exoplanet atmospheres Characterization Observatory payload short-wave infrared channel: EChO SWiR", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91432G (28 August 2014); https://doi.org/10.1117/12.2054876
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