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Proceedings Paper

Data reduction software of the X-shooter spectrograph
Author(s): P. Goldoni; F. Royer; P. François; M. Horrobin; G. Blanc; J. Vernet; A. Modigliani; J. Larsen
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Paper Abstract

We present the Data Reduction Software (DRS) being developed at APC, Paris Observatory, Amsterdam University and ESO for the X-shooter echelle spectrograph. X-shooter is the first VLT second generation instrument, expected to be operational in 2008. The DRS will be fully integrated in the ESO VLT system and it will use the ESO Common Pipeline Library. We discuss the data reduction related to slit and IFU observations. X-shooter data have two main characteristics, on the one hand the exceptionally wide band (0.3-2.4 μm) covered in a single exposure, and on the other hand the spectral format with highly curved orders and tilted lines. The reduction process is described and the critical issues related to the above characteristics, notably the sky subtraction, the optimal extraction, and the construction of 1D/2D/3D output products, are addressed. Some aspects of the spectrophotometric calibration are also discussed.

Paper Details

Date Published: 30 June 2006
PDF: 11 pages
Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62692K (30 June 2006); doi: 10.1117/12.669986
Show Author Affiliations
P. Goldoni, APC/UMR 7164 (France)
F. Royer, GEPI, Observatoire de Paris-Meudon (France)
P. François, GEPI, Observatoire de Paris-Meudon (France)
M. Horrobin, Univ. of Amsterdam (Netherlands)
G. Blanc, APC/UMR 7164 (France)
J. Vernet, European Southern Observatory (Germany)
A. Modigliani, European Southern Observatory (Germany)
J. Larsen, European Southern Observatory (Germany)

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

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