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An integrated payload design for the Exoplanet Characterisation Observatory (EChO)

Swinyard, Bruce, Tinetti, Giovanna, Eccleston, Paul, Adriani, Alberto, Beaulieu, Jean-Philippe, Coustenis, Athena, Belenguer Davila, Tomas, Bowles, Neil, Bryson, Ian, du Foresto, Vincent Coude, Ferlet, Marc, Hartogh, Paul, Lagage, Pierre-Olivier, Lim, Tanya, Malaguti, Giuseppe, Lopez-Morales, Mercedes, Micela, Giuseppina, Morgante, Gianluca, Norgaard-Nielsen, Hans Ulrik, Ollivier, Marc, Pace, Emanuele, Pascale, Enzo, Piccioni, Giuseppe, Ramos Zapata, Gonzalo, Reess, Jean-Michel, Ribas, Ignasi, Sozzetti, Alessandro, Tennyson, Jonathan, Tessenyi, Marcell, Swain, Mark R., Winter, Berend, Waldmann, Ingo, Wright, Gillian and Zapatero Osorio, Maria-Rosa 2012. An integrated payload design for the Exoplanet Characterisation Observatory (EChO). Presented at: Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, Amsterdam, Netherlands, 1-6 July 2012. Published in: Clampin, M. C., Fazio, G. G., MacEwen, H. A. and Oschmann, J. M. eds. Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave. Proceedings of the SPIE , vol. 8442. Bellingham, WA: SPIE, 84421G. 10.1117/12.924688

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Abstract

The Exoplanet Characterisation Observatory (EChO) is a space mission dedicated to undertaking spectroscopy of transiting exoplanets over the widest wavelength range possible. It is based around a highly stable space platform with a 1.2 m class telescope. The mission is currently being studied by ESA in the context of a medium class mission within the Cosmic Vision programme for launch post 2020. The payload suite is required to provide simultaneous coverage from the visible to the mid-infrared and must be highly stable and effectively operate as a single instrument. In this paper we describe the integrated spectrometer payload design for EChO which will cover the 0.4 to 16 micron wavelength band. The instrumentation is subdivided into 5 channels (Visible/Near Infrared, Short Wave InfraRed, 2 x Mid Wave InfraRed; Long Wave InfraRed) with a common set of optics spectrally dividing the input beam via dichroics. We discuss the significant design issues for the payload and the detailed technical trade-offs that we are undertaking to produce a payload for EChO that can be built within the mission and programme constraints and yet which will meet the exacting scientific performance required to undertake transit spectroscopy.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Additional Information: Article number: 84421G
Publisher: SPIE
ISBN: 9780819491435
Funders: STFC
Related URLs:
Last Modified: 18 Sep 2017 13:00
URI: http://orca-mwe.cf.ac.uk/id/eprint/53751

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