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Proceedings Paper

Multilayer grating spectrometer for solar observations
Author(s): Ester Antonucci; Luigi Ciminiera; Andrea Marco Malvezzi; Giuseppe Tondello
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Paper Abstract

A stigmatic spectrograph in the 17 - 23 nm region for observations of the solar disk and corona based on multilayer mirror and grating is described. Its main scientific use is global surveying of the disk with approximately equal 10 arcsec2 resolution. Spectral resolution is used to monitor temperature- and density-sensitive spectral lines thus obtaining solar temperature and density maps in the 105 - 107 degrees Kelvin, 1013 - 1018 cm-3 ranges, respectively. The use of off-axis paraboloidal telescope coupled with a toroidal grating results in spectral resolving powers of the order of 1000 and angular resolution of approximately equal 10 arcsec throughout an instantaneous field-of-view of 10 arcsec X 40 arcmin. Temporal resolution of the order of 0.1 second is expected which can be of use in observations of high brilliance events. The system is also equipped with a visible channel to correlate XUV events with ground observations.

Paper Details

Date Published: 17 December 1998
PDF: 9 pages
Proc. SPIE 3443, X-Ray and Ultraviolet Spectroscopy and Polarimetry II, (17 December 1998); doi: 10.1117/12.333617
Show Author Affiliations
Ester Antonucci, Osservatorio Astronomico di Torino (Italy)
Luigi Ciminiera, Politecnico di Torino (Italy)
Andrea Marco Malvezzi, Univ. degli Studi di Pavia (Italy)
Giuseppe Tondello, Univ. degli Studi di Padova (Italy)

Published in SPIE Proceedings Vol. 3443:
X-Ray and Ultraviolet Spectroscopy and Polarimetry II
Silvano Fineschi, Editor(s)

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