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Proceedings Paper

The optical design of the X-shooter for the VLT
Author(s): P. Spanò; B. Delabre; A. Norup Sørensen; F. Rigal; A. de Ugarte Postigo; R. Mazzoleni; G. Sacco; P. Conconi; V. De Caprio; N. Michaelsen
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Paper Abstract

The overall optical design of X-Shooter, the second generation, wide band, intermediate resolution, high efficiency, three-arms spectrograph for the VLT, is presented. We focus on the optical design of the three optimized arms, covering UVB (300-550 nm), VIS (550-1000 nm), and NIR (1000-2300 nm) wavelength ranges, including spectrographs and pre-slit optics. All spectrographs share the same original "4C" concept (Collimator Correction of Camera Chromatism). We describe also the auxiliary optics, such as dichroics, acquisition and guiding unit. Performances analysis are summarized.

Paper Details

Date Published: 30 June 2006
PDF: 8 pages
Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62692X (30 June 2006); doi: 10.1117/12.671162
Show Author Affiliations
P. Spanò, INAF, Osservatorio Astronomico di Brera (Italy)
INAF, Osservatorio Astronomico di Palermo (Italy)
B. Delabre, European Southern Observatory (Germany)
A. Norup Sørensen, CUO, Niels Bohr Institute (Denmark)
F. Rigal, ASTRON (Netherlands)
A. de Ugarte Postigo, Instituto de Astrofisica de Andalucia (Spain)
R. Mazzoleni, European Southern Observatory (Germany)
G. Sacco, INAF, Osservatorio Astronomico di Palermo (Italy)
P. Conconi, INAF, Osservatorio Astronomico di Brera (Italy)
V. De Caprio, INAF, Osservatorio Astronomico di Brera (Italy)
N. Michaelsen, CUO, Niels Bohr Institute (Denmark)


Published in SPIE Proceedings Vol. 6269:
Ground-based and Airborne Instrumentation for Astronomy
Ian S. McLean; Masanori Iye, Editor(s)

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