Test plan for the PROBA3/ASPIICS scaled model measurement campaign

[en] 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. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Disciplines :

Aerospace & aeronautics engineering

Author, co-author :

Landini, F.; INAF-Osservatorio Astrosico di Arcetri, Largo Enrico Fermi 2, Firenze, Italy

Baccani, C.; Universita Degli Studi di Firenze, Dipartimento di Fisica e Astronomia, Via Sansone 1, Sesto Fiorentino, Italy

Vives, S.; Aix Marseille Universite, CNRS, Laboratoire d'Astrophysique de Marseille, Marseille, France

Fineschi, S.; INAF-Osservatorio Astrosico di Torino, Strada Osservatorio 20, Pino Torinese, Italy

Romoli, M.; Universita Degli Studi di Firenze, Dipartimento di Fisica e Astronomia, Via Sansone 1, Sesto Fiorentino, Italy

Capobianco, G.; INAF-Osservatorio Astrosico di Torino, Strada Osservatorio 20, Pino Torinese, Italy

Massone, G.; INAF-Osservatorio Astrosico di Torino, Strada Osservatorio 20, Pino Torinese, Italy

Casti, M.; INAF-Osservatorio Astrosico di Torino, Strada Osservatorio 20, Pino Torinese, Italy

Bemporad, A.; INAF-Osservatorio Astrosico di Torino, Strada Osservatorio 20, Pino Torinese, Italy

Focardi, M.; INAF-Osservatorio Astrosico di Arcetri, Largo Enrico Fermi 2, Firenze, Italy

More authors (8 more)

Language :

English

Title :

Test plan for the PROBA3/ASPIICS scaled model measurement campaign

Publication date :

2017

Event name :

UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX 2017

Event date :

6 August 2017 through 8 August 2017

Audience :

International

Journal title :

Proceedings of SPIE: The International Society for Optical Engineering

ISSN :

0277-786X

eISSN :

1996-756X

Publisher :

SPIE

Volume :

10397

Funders :

SPIE - International Society for Optics and Photonics [US-WA]

Commentary :

131565 9781510612518

Available on ORBi :

since 01 December 2020

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Bibliography

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