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Design and modelisation of ASPIICS optics

Date Issued
2015
Author(s)
Galy, Camille
•
•
Galano, Damien
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Howard, R. A.
•
Kintziger, C.
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Kirschner, V.
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Koutchmy, Serge
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Lamy, Philippe
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Mazzoli, A.
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Melich, R.
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Mestreau-Garreau, Agnes
•
Renotte, Etienne
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Servaye, J. S.
•
Stockman, Y.
•
Thizy, Cedric
•
Zhukov, Andrei
DOI
Abstract
In the framework of development of ASPIICS (Association of Spacecraft for Polarimetric and Imaging Investigation of the Corona of the Sun), the Centre Spatial de Liege is responsible of the optical design of the coronagraph and the optics will be manufactured by TOPTEC. The particularity of this coronagraph is to have an external occulter located 150 m ahead of the first imaging lens. This external occulter is re-imaged on an internal occulter which function is - as in a classical externally occulted Lyot coronagraph - to block the sun light diffracted by the external occulter and to reduce the straylight on the detector. The selection of this configuration is driven by the requirement to observe the corona as close as possible to the solar limb (i.e. 1 RSun) without imaging the limb itself. A requirement of 1.08 RSun is specified at optical design level to grant 1.2 Rsun at instrument level. The coronograph instrument is designed to have a field of view of 1.6° x 1.6° with a resolution of less than 6 arcsec. Its performances are limited by diffraction in a 530 - 590 nm wavelength range. This paper presents the optical design and demonstrates that by design the requirements are fulfilled within the misalignment, manufacturing and thermo-elastic error contributions.
Coverage
Solar Physics and Space Weather Instrumentation VI
All editors
Fineschi, Silvano; Fennelly, Judy
Series
Volume
9604
Start page
96040B
Conferenece
Solar Physics and Space Weather Instrumentation VI
Conferenece place
San Diego, CA, USA
Conferenece date
9-13 August, 2015
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2015SPIE.9604E..0BG
Rights
open.access
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2015_SPIE_Renotte_Design status of ASPIICS-PROBA-3.pdf

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1.29 MB

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