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Proceedings Paper

Analysis of optical efficiency of METIS coronagraph telescope on board of the Solar Orbiter mission
Author(s): V. Polito; A. J. Corso; P. Zuppella; P. Nicolosi; S. Fineschi; E. Antonucci; D. L. Windt; M. G. Pelizzo
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Paper Abstract

The Multi Element Telescope for Imaging and Spectroscopy (METIS) coronagraph is an instrument belonging to the SOLar Orbiter(SOLO) mission payload which will perform the imaging of the solar corona in three different spectral ranges: 30.4 nm (He-II Lyman-α line), 121.6 nm (H-I Lyman- α line) and visible spectral range (500-650 nm). Optical coatings with high reflectance performances at the interested wavelengths are required to collect enough light at the detector level. Different multilayer structures based on Si/Mo couples with appropriate capping layers have been already designed and tested to achieve this purpose. A model has been developed in order to estimate the efficiency's performances of the instrument on the whole field of view (FoV) by considering the ray paths. The results shown have been obtained taking into account of the experimental results on multilayers structures previously tested and the optical design of the instrument.

Paper Details

Date Published: 17 September 2012
PDF: 15 pages
Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84433G (17 September 2012); doi: 10.1117/12.927118
Show Author Affiliations
V. Polito, Institute for Photonics and Nanotechnologies, CNR (Italy)
Univ. of Padova (Italy)
A. J. Corso, Institute for Photonics and Nanotechnologies, CNR (Italy)
Univ. of Padova (Italy)
P. Zuppella, Institute for Photonics and Nanotechnologies, CNR (Italy)
Univ. of Padova (Italy)
P. Nicolosi, Institute for Photonics and Nanotechnologies, CNR (Italy)
Univ. of Padova (Italy)
S. Fineschi, INAF, Osservatorio Astronomico di Torino (Italy)
E. Antonucci, INAF, Osservatorio Astronomico di Torino (Italy)
D. L. Windt, Reflective X-Ray Optics LLC (United States)
M. G. Pelizzo, Lab. for Ultraviolet and X-ray Optical Research, CNR, Institute for Photonics and Nanotechnologies (Italy)
Univ. of Padova (Italy)


Published in SPIE Proceedings Vol. 8443:
Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Stephen S. Murray; Jan-Willem A. den Herder, Editor(s)

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