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Proceedings Paper

Possible optical design for ASPICS, a formation-flyer solar coronagraph for close-limb visible and Lyman-alpha imaging of the corona
Author(s): Fabio Frassetto; Giampiero Naletto; Sebastien Vives; Philippe Lamy
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Paper Abstract

The recent possibility of deploying clusters of satellites in flight formation allows the development of a new generation of space instruments, and among them, of externally occulted solar coronagraphs. This can be implemented by introducing a large occulter on a first satellite, and all the remaining optical system on a second satellite, located in the shadow of the occulter. Since the capability of looking close to the solar limb is directly related to the distance between the external occulter and the coronagraphic objective, formation flyers offer the capability of a major improvement in observing the lower corona from space. In this paper, we describe a possible optical design for ASPICS, a formation flyer solar coronagraph composed of two satellites separated by about 100 m. The proposed dual channel design will allow for the first time to simultaneously observe the lower and intermediate corona in both visible and ultraviolet (HI Lyman-α line) spectral regions at a 6 arcsec/pixel scale factor with a single instrument.

Paper Details

Date Published: 15 September 2005
PDF: 9 pages
Proc. SPIE 5901, Solar Physics and Space Weather Instrumentation, 590117 (15 September 2005); doi: 10.1117/12.620276
Show Author Affiliations
Fabio Frassetto, Univ. of Padova (Italy)
CNR-INFM (Italy)
Giampiero Naletto, Univ. of Padova (Italy)
CNR-INFM (Italy)
Sebastien Vives, Lab. d'Astrophysique de Marseille (France)
Philippe Lamy, Lab. d'Astrophysique de Marseille (France)

Published in SPIE Proceedings Vol. 5901:
Solar Physics and Space Weather Instrumentation
Silvano Fineschi; Rodney A. Viereck, Editor(s)

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