EUV and soft x-ray telescope-spectrometer for imaging spectroscopy on the Solar Orbiter mission: configurations with multilayer-coated optics

Luca Poletto; Giuseppe Tondello; Massimo Landini

doi:10.1117/12.450078

10 December 2001 EUV and soft x-ray telescope-spectrometer for imaging spectroscopy on the Solar Orbiter mission: configurations with multilayer-coated optics

Luca Poletto, Giuseppe Tondello, Massimo Landini

Author Affiliations +

Proceedings Volume 4498, UV/EUV and Visible Space Instrumentation for Astronomy and Solar Physics; (2001) https://doi.org/10.1117/12.450078
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

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.

Citation Download Citation

Luca Poletto, Giuseppe Tondello, and Massimo Landini "EUV and soft x-ray telescope-spectrometer for imaging spectroscopy on the Solar Orbiter mission: configurations with multilayer-coated optics", Proc. SPIE 4498, UV/EUV and Visible Space Instrumentation for Astronomy and Solar Physics, (10 December 2001); https://doi.org/10.1117/12.450078

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KEYWORDS

Telescopes

Mirrors

Spectroscopy

Space telescopes

Spatial resolution

Sun

Iron

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