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Proceedings Paper

Spectrometer for UVISS telescope on the space station
Author(s): Giampiero Naletto; Luca Poletto; Alessandro Zuccaro
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Paper Abstract

This report summarizes the conclusions of the study so far developed at CISAS 'G. Colombo' of Padua University about the optical configuration of the spectrometer to be installed on UVISS, a SiC far- and near-UV telescope for the International Space Station. This spectrometer has to cover the whole 91 - 320 nm spectral region, by providing a resolving power greater than 300 at 100 nm and around 600 at 200 nm; a spatial resolution of 4 arcsec on-axis and minimization of spatial aberrations over arcmin's long entrance slit is required. Several designs have been considered, from the simple on- Rowland toroidal grating to the more complex aberration corrected holographically ruled one. Due to room limitations in UVISS instrument bay and in order to minimize the number of optical elements because of throughput, a two in-flight interchangeable channel configuration has provisionally been selected, each one using a single dispersive element: the first covers the 91 - 130 nm region, the second the 130 - 320 nm one. Both channels use a spherical grating with parallel variable line spacing in the Harada mounting. The theoretical performance of the two channels is obtained by ray-tracing simulation.

Paper Details

Date Published: 18 December 2000
PDF: 12 pages
Proc. SPIE 4139, Instrumentation for UV/EUV Astronomy and Solar Missions, (18 December 2000); doi: 10.1117/12.410524
Show Author Affiliations
Giampiero Naletto, Univ. degli Studi di Padova (Italy) and Univ. degli Studi di Padova/INFM (Italy)
Luca Poletto, Univ. degli Studi di Padova (Italy) and Univ. degli Studi di Padova/INFM (Italy)
Alessandro Zuccaro, Univ. degli Studi di Padova (Italy)

Published in SPIE Proceedings Vol. 4139:
Instrumentation for UV/EUV Astronomy and Solar Missions
Silvano Fineschi; Clarence M. Korendyke; Oswald H. W. Siegmund; Bruce E. Woodgate, Editor(s)

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