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Proceedings Paper

CRIRES+: a cross-dispersed high-resolution infrared spectrograph for the ESO VLT
Author(s): R. Follert; R. J. Dorn; E. Oliva; J. L. Lizon; A. Hatzes; N. Piskunov; A. Reiners; U. Seemann; E. Stempels; U. Heiter; T. Marquart; M. Lockhart; G. Anglada-Escude; T. Löwinger; D. Baade; J. Grunhut; P. Bristow; B. Klein; Y. Jung; D. J. Ives; F. Kerber; Eszter Pozna; J. Paufique; H. U. Kaeufl; L. Origlia; E. Valenti; D. Gojak; M. Hilker; L. Pasquini; A. Smette; J. Smoker
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Paper Abstract

High-resolution infrared spectroscopy plays an important role in astrophysics from the search for exoplanets to cosmology. Yet, many existing infrared spectrographs are limited by a rather small simultaneous wavelength coverage. The AO assisted CRIRES instrument, installed at the ESO VLT on Paranal, is one of the few IR (0.92-5.2 μm) highresolution spectrographs in operation since 2006. However it has a limitation that hampers its efficient use: the wavelength range covered in a single exposure is limited to ~15 nanometers. The CRIRES Upgrade project (CRIRES+) will transform CRIRES into a cross-dispersed spectrograph and will also add new capabilities. By introducing crossdispersion elements the simultaneously covered wavelength range will be increased by at least a factor of 10 with respect to the present configuration, while the operational wavelength range will be preserved. For advanced wavelength calibration, new custom made absorption gas cells and etalons will be added. A spectro-polarimetric unit will allow one for the first time to record circularly polarized spectra at the highest spectral resolution. This will be all supported by a new data reduction software which will allow the community to take full advantage of the new capabilities of CRIRES+.

Paper Details

Date Published: 8 July 2014
PDF: 10 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914719 (8 July 2014); doi: 10.1117/12.2054197
Show Author Affiliations
R. Follert, Thüringer Landessternwarte Tautenburg (Germany)
R. J. Dorn, European Southern Observatory (Germany)
E. Oliva, INAF - Osservatorio Astrofisico di Arcetri (Italy)
J. L. Lizon, European Southern Observatory (Germany)
A. Hatzes, Thüringer Landessternwarte Tautenburg (Germany)
N. Piskunov, Uppsala Univ. (Sweden)
A. Reiners, Georg-August-Univ. Göttingen (Germany)
U. Seemann, Georg-August-Univ. Göttingen (Germany)
E. Stempels, Uppsala Univ. (Sweden)
U. Heiter, Uppsala Univ. (Sweden)
T. Marquart, Uppsala Univ. (Sweden)
M. Lockhart, Uppsala Univ. (Sweden)
G. Anglada-Escude, Georg-August-Univ. Göttingen (Germany)
T. Löwinger, Thüringer Landessternwarte Tautenburg (Germany)
D. Baade, European Southern Observatory (Germany)
J. Grunhut, European Southern Observatory (Germany)
P. Bristow, European Southern Observatory (Germany)
B. Klein, European Southern Observatory (Germany)
Y. Jung, European Southern Observatory (Germany)
D. J. Ives, European Southern Observatory (Germany)
F. Kerber, European Southern Observatory (Germany)
Eszter Pozna, European Southern Observatory (Germany)
J. Paufique, European Southern Observatory (Germany)
H. U. Kaeufl, European Southern Observatory (Germany)
L. Origlia, INAF - Osservatorio Astronomico di Bologna (Italy)
E. Valenti, European Southern Observatory (Germany)
D. Gojak, European Southern Observatory (Germany)
M. Hilker, European Southern Observatory (Germany)
L. Pasquini, European Southern Observatory (Germany)
A. Smette, European Southern Observatory (Germany)
J. Smoker, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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