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Proceedings Paper

Test plan for the PROBA3/ASPIICS scaled model measurement campaign
Author(s): Federico Landini; Cristian Baccani; Sébastien Vives; Silvano Fineschi; Marco Romoli; Gerardo Capobianco; Giuseppe Massone; Marta Casti; Alessandro Bemporad; Mauro Focardi; Maurizio Pancrazzi; Davide Loreggia; Vladimiro Noce; Alain Jody Corso; Cédric Thizy; Etienne Renotte; Benoît Marquet
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Paper Abstract

PROBA3/ASPIICS (Association of Spacecraft for Polarimetric and Imaging Investigation of the Corona of the Sun) is the first formation flight solar coronagraph, scheduled by ESA for a launch and currently in phase C/D. It is constituted by two spacecraft (one hosting the occulter, diameter 142 cm, and one with the telescope) separated by 144 m, kept in strict alignment by means of complex active and metrology custom systems. The stray light analysis, which is always one the most critical work packages for a solar coronagraph, has been only theoretically investigated so far due to the difficulty of replicating the actual size system in a clean laboratory environment. The light diffracted by the external occulter is the worst offender for the stray light level on the instrument focal plane, thus there is strong interest for scaling at least the occultation system of the coronagraph and test it in front of a solar simulator in order to experimentally validate the expected theoretical performance. The theory for scaling the occulter, the occulter-pupil distance and the source dimension has been developed and a scaled model is being manufactured. A test campaign is going to be conducted at the OPSys facility in Torino in front of a solar simulator (conveniently scaled). This work accounts for the description of the scaled model laboratory set-up and of the test plan.

Paper Details

Date Published: 29 August 2017
PDF: 15 pages
Proc. SPIE 10397, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX, 103971C (29 August 2017); doi: 10.1117/12.2273921
Show Author Affiliations
Federico Landini, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Cristian Baccani, Univ. degli Studi di Firenze (Italy)
Sébastien Vives, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Silvano Fineschi, INAF - Osservatorio Astrofisico di Torino (Italy)
Marco Romoli, Univ. degli Studi di Firenze (Italy)
Gerardo Capobianco, INAF - Osservatorio Astrofisico di Torino (Italy)
Giuseppe Massone, INAF - Osservatorio Astrofisico di Torino (Italy)
Marta Casti, INAF - Osservatorio Astrofisico di Torino (Italy)
Alessandro Bemporad, INAF - Osservatorio Astronomico di Torino (Italy)
Mauro Focardi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Maurizio Pancrazzi, Univ. degli Studi di Firenze (Italy)
Davide Loreggia, INAF - Osservatorio Astrofisico di Torino (Italy)
Vladimiro Noce, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Alain Jody Corso, CNR - Instituto di Fotonica e Nanotecnologie (Italy)
Cédric Thizy, Univ. de Liège (Belgium)
Etienne Renotte, Univ. de Liège (Belgium)
Benoît Marquet, Univ. de Liège (Belgium)


Published in SPIE Proceedings Vol. 10397:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX
Oswald H. Siegmund, Editor(s)

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