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Proceedings Paper

Optical design of CAOS: a high-resolution spectropolarimeter for the Catania Astrophysical Observatory 0.91-m telescope
Author(s): Paolo Spano; F. Leone; Salvatore Scuderi; Santo Catalano; Filippo Maria Zerbi
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Paper Abstract

CAOS (Catania Astrophysical Observatory Spectrograph) is a high-resolution (R~60,000), fiber fed, bench-mounted, prism cross-dispersed, white-pupil R-4 echelle spectrograph with polarimetric capabilities, for the 0.91m telescope on Mt. Etna. Wavelengths from 390 to 710 nm are covered in one-shot with a 2Kx2K 13.5 micron CCD. Inherent high efficiency of the spectrograph and optimum matching between fibers and spectrograph will allow high throughput for the overall system. This instrument will replace the existing spectrograph, with a net gain in spectral resolution (about a factor 2) and in efficiency (about a factor 10), extending current studies undertaken by Catania Astrophysical Observatory in stellar physics.

Paper Details

Date Published: 30 September 2004
PDF: 8 pages
Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.550344
Show Author Affiliations
Paolo Spano, Univ. degli Studi di Palermo (Italy)
INAF, Osservatorio Astronomico di Palermo (Italy)
F. Leone, INAF, Osservatorio Astrofisico di Catania (Italy)
Salvatore Scuderi, INAF, Osservatorio Astrofisico di Catania (Italy)
Santo Catalano, INAF, Osservatorio Astrofisico di Catania (Italy)
Filippo Maria Zerbi, INAF, Osservatorio Astronomico di Brera (Italy)


Published in SPIE Proceedings Vol. 5492:
Ground-based Instrumentation for Astronomy
Alan F. M. Moorwood; Masanori Iye, Editor(s)

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