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Proceedings Paper

The giant externally occulted coronagraph ASPIICS for the PROBA-3 formation flying mission
Author(s): Sébastien Vivès; Philippe Lamy; Michel Saisse; J.L. Boit; Patrick Levacher
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Paper Abstract

Formation flying opens new perspectives in solar physics, and allow to conceive giant, externally-occulted coronagraphs using a two-component space system with the external occulter on one spacecraft and the optical instrument on the other spacecraft at a distance of hundred meters. ASPIICS (Association de Satellites Pour l'Imagerie et l'Interferometrie de la Couronne Solaire) is a mission proposed to ESA in the framework of its PROBA-3 demonstration program of formation flying which is presently in phase A. ASPIICS is a single coronagraph which will perform both high spatial resolution imaging of the solar corona as well as 2-dimensional spectroscopy of several emission lines from the coronal base out to 3 R(symbol) using an etalon Fabry-Perot interferometer. The selected lines will allow to address different coronal regions: the forbidden line of FeXIV at 530.285 nm (hot coronal matter), Fe IX/X at 637.4 nm (coronal holes), HeI at 587.6 nm (cold matter). An additional broad spectral channel will image the white light corona so as to derive electron densities. The classical design of an externally-occulted coronagraph is adapted to the formation flying configuration allowing the detection of the very inner corona as close as 0.01 R(symbol) from the solar limb.

Paper Details

Date Published: 26 October 2007
PDF: 12 pages
Proc. SPIE 6689, Solar Physics and Space Weather Instrumentation II, 66890F (26 October 2007); doi: 10.1117/12.736180
Show Author Affiliations
Sébastien Vivès, Lab. d'Astrophysique de Marseille (France)
Philippe Lamy, Lab. d'Astrophysique de Marseille (France)
Michel Saisse, Observatoire Astronomique de Marseille-Provence (France)
J.L. Boit, Lab. d'Astrophysique de Marseille (France)
Patrick Levacher, Lab. d'Astrophysique de Marseille (France)

Published in SPIE Proceedings Vol. 6689:
Solar Physics and Space Weather Instrumentation II
Silvano Fineschi; Rodney A. Viereck, Editor(s)

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