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Proceedings Paper

Echoes: a new instrumental concept of spectro-imaging for Jovian seismology
Author(s): L. Soulat; F.-X. Schmider; S. Robbe-Dubois; T. Appourchaux; Y. Bresson; J.-B. Daban; P. Gaulme; J. Gay; C. Gouvret
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Paper Abstract

Echoes is a project of a space-borne instrument which has been proposed as part of the JUICE mission which is selected in the Cosmic Vision program of the European Space Agency (ESA) to perform seismic and dynamics studies of Jupiter's interior and atmosphere. Based on an original Mach-Zehnder design, the instrument aims to measure Doppler shifts of solar spectral lines, which are reflected by cloud layers of Jupiter's upper troposphere, coupled with imaging capabilities. It is specified to detect global oscillations with degree up to l = 50 and amplitude as low as 1 cm/s at the surface of Jupiter. In order to check the compliance of the instrument, and its capability to operate in representative environment (TRL5), we build a prototype to perform tests. In this paper, we present the prototype implemented at Observatoire de la Côte d'Azur in collaboration with Institut d'Astrophysique Spatiale. We describe the design of the Mach-Zehnder and the procedure of control and adjustment. We present the necessary tests and we show on simulation that the measurements will provide the required precision. In conclusion, we will explain the perspective for such a new instrument.

Paper Details

Date Published: 21 September 2012
PDF: 11 pages
Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84424M (21 September 2012); doi: 10.1117/12.924875
Show Author Affiliations
L. Soulat, Lab. J.-L. Lagrange, , CNRS, Univ. of Nice Sophia Antipolis (France)
F.-X. Schmider, Lab. J.-L. Lagrange, , CNRS, Univ. of Nice Sophia Antipolis (France)
S. Robbe-Dubois, Lab. J.-L. Lagrange, , CNRS, Univ. of Nice Sophia Antipolis (France)
T. Appourchaux, Institut d'Astrophysique Spatiale, CNRS, Univ. Paris XI (France)
Y. Bresson, Lab. J.-L. Lagrange, , CNRS, Univ. of Nice Sophia Antipolis (France)
J.-B. Daban, Lab. J.-L. Lagrange, , CNRS, Univ. of Nice Sophia Antipolis (France)
P. Gaulme, New Mexico State Univ. (United States)
J. Gay, Lab. J.-L. Lagrange, , CNRS, Univ. of Nice Sophia Antipolis (France)
C. Gouvret, Lab. J.-L. Lagrange, , CNRS, Univ. of Nice Sophia Antipolis (France)


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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