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Proceedings Paper

EUV and soft x-ray telescope-spectrometer for imaging spectroscopy on the Solar Orbiter mission: configurations with multilayer-coated optics
Author(s): Luca Poletto; Giuseppe Tondello; Massimo Landini
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Paper Abstract

Two configurations with multilayer-coated optics for an EUV and soft X-ray telescope-spectrometer for imaging spectroscopy on the Solar Orbiter mission are presented. The telescope is designed with conventional grazing-incidence optics, in order to reduce the thermal load on optics looking directly at the solar disk. The spectrometer mounts a normal-incidence multilayer-coated grating, being protected by the entrance slit. Two configurations are presented: a grazing-incidence telescope that feeds a normal-incidence grating spectrometer and two grazing-incidence telescopes with cylindrical mirrors in the Kirkpatrick-Baez configuration and a normal-incidence spectrometer with a cylindrical grating. In the former case, the off-axis resolution of the telescope is degraded by the grating aberrations. In the latter case, the spectral and spatial focusing properties are fully uncoupled: the off-axis resolution is independent from the grating performance. The performance in the 18-22 nm spectral region are compared with those of a grazing-incidence telescope-spectrometer.

Paper Details

Date Published: 10 December 2001
PDF: 12 pages
Proc. SPIE 4498, UV/EUV and Visible Space Instrumentation for Astronomy and Solar Physics, (10 December 2001); doi: 10.1117/12.450078
Show Author Affiliations
Luca Poletto, Univ. degli Studi di Padova/INFM (Italy)
Giuseppe Tondello, Univ. degli Studi di Padova/INFM (Italy)
Massimo Landini, Univ. degli Studi di Firenze (Italy)


Published in SPIE Proceedings Vol. 4498:
UV/EUV and Visible Space Instrumentation for Astronomy and Solar Physics
Oswald H. W. Siegmund; Silvano Fineschi; Mark A. Gummin, Editor(s)

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