21 September 2012 An integrated payload design for the Exoplanet Characterisation Observatory (EChO)
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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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bruce Swinyard, Bruce Swinyard, Giovanna Tinetti, Giovanna Tinetti, Paul Eccleston, Paul Eccleston, Alberto Adriani, Alberto Adriani, Jean-Philippe Beaulieu, Jean-Philippe Beaulieu, Tomas Belenguer Davila, Tomas Belenguer Davila, Neil Bowles, Neil Bowles, Ian Bryson, Ian Bryson, Vincent Coudé du Foresto, Vincent Coudé du Foresto, Marc Ferlet, Marc Ferlet, Paul Hartogh, Paul Hartogh, Pierre-Olivier Lagage, Pierre-Olivier Lagage, Tanya Lim, Tanya Lim, Giuseppe Malaguti, Giuseppe Malaguti, Mercedes López-Morales, Mercedes López-Morales, Giuseppina Micela, Giuseppina Micela, Gianluca Morgante, Gianluca Morgante, Hans Ulrik Nørgaard-Nielsen, Hans Ulrik Nørgaard-Nielsen, Marc Ollivier, Marc Ollivier, Emanuele Pace, Emanuele Pace, Enzo Pascale, Enzo Pascale, Giuseppe Piccioni, Giuseppe Piccioni, Gonzalo Ramos Zapata, Gonzalo Ramos Zapata, Jean-Michel Reess, Jean-Michel Reess, Ignasi Ribas, Ignasi Ribas, Alessandro Sozzetti, Alessandro Sozzetti, Jonathan Tennyson, Jonathan Tennyson, Marcell Tessenyi, Marcell Tessenyi, Mark R. Swain, Mark R. Swain, Berend Winter, Berend Winter, Ingo Waldmann, Ingo Waldmann, Gillian Wright, Gillian Wright, Maria-Rosa Zapatero Osorio, Maria-Rosa Zapatero Osorio, Athena Coustenis, Athena Coustenis, } "An integrated payload design for the Exoplanet Characterisation Observatory (EChO)", Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84421G (21 September 2012); doi: 10.1117/12.924688; https://doi.org/10.1117/12.924688
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