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Proceedings Paper

CRIRES: commissioning and first science results
Author(s): Hans Ulrich Käufl; Paola Amico; Pascal Ballester; Eduardo A. Bendek Selman; Paul Bristow; Mark Casali; Bernard Delabre; Danuta Dobrzycka; Reinhold J. Dorn; Raul Esteves; Gert Finger; Gordon Gillet; Domingo Gojak; Michael Hilker; Paul Jolley; Yves Jung; Florian Kerber; Barbara Klein; Jean-Louis Lizon; Jerome Paufique; Jean-Francois Pirard; Eszter Pozna; Hugues Sana; Lilian Sanzana; Ricardo Schmutzer; Andreas Seifahrt; Ralf Siebenmorgen; Alain Smette; Jörg Stegmeier; Lowell E. Tacconi-Garman; Stefan Uttenthaler; Elena Valenti; Ueli Weilenmann; Burkhard Wolff
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Paper Abstract

CRIRES is a cryogenic, pre-dispersed, infrared Echelle spectrograph designed to provide a nominal resolving power ν/Δν of 105 between 1000 and 5000 nm for a nominal slit width of 0.2". The CRIRES installation at the Nasmyth focus A of the 8-m VLT UT1 (Antu) marks the completion of the original instrumentation plan for the VLT. A curvature sensing adaptive optics system feed is used to minimize slit losses and to provide 0.2" spatial resolution along the slit. A mosaic of four Aladdin InSb-arrays packaged on custom-fabricated ceramic boards has been developed. It provides for an effective 4096 × 512 pixel focal plane array to maximize the free spectral range covered in each exposure. Insertion of gas cells is possible in order to measure radial velocities with high precision. Measurement of circular and linear polarization in Zeeman sensitive lines for magnetic Doppler imaging is foreseen but not yet fully implemented. A cryogenic Wollaston prism on a kinematic mount is already incorporated. The retarder devices will be located close to the Unit Telescope focal plane. Here we briefly recall the major design features of CRIRES and describe the commissioning of the instrument including a report of extensive testing and a preview of astronomical results.

Paper Details

Date Published: 25 July 2008
PDF: 8 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140W (25 July 2008); doi: 10.1117/12.787259
Show Author Affiliations
Hans Ulrich Käufl, European Southern Observatory (Germany)
Paola Amico, European Southern Observatory (Chile)
Pascal Ballester, European Southern Observatory (Germany)
Eduardo A. Bendek Selman, European Southern Observatory (Chile)
Paul Bristow, European Southern Observatory (Germany)
Mark Casali, European Southern Observatory (Germany)
Bernard Delabre, European Southern Observatory (Germany)
Danuta Dobrzycka, European Southern Observatory (Germany)
Reinhold J. Dorn, European Southern Observatory (Germany)
Raul Esteves, Consultant (Portugal)
Gert Finger, European Southern Observatory (Germany)
Gordon Gillet, European Southern Observatory (Chile)
Domingo Gojak, European Southern Observatory (Germany)
Michael Hilker, European Southern Observatory (Germany)
Paul Jolley, European Southern Observatory (Germany)
Yves Jung, European Southern Observatory (Germany)
Florian Kerber, European Southern Observatory (Germany)
Barbara Klein, European Southern Observatory (Germany)
Jean-Louis Lizon, European Southern Observatory (Germany)
Jerome Paufique, European Southern Observatory (Germany)
Jean-Francois Pirard, European Southern Observatory (Germany)
Eszter Pozna, European Southern Observatory (Germany)
Hugues Sana, European Southern Observatory (Chile)
Lilian Sanzana, European Southern Observatory (Chile)
Ricardo Schmutzer, European Southern Observatory (Chile)
Andreas Seifahrt, Institut für Astrophysik, Univ. Göttingen (Germany)
Ralf Siebenmorgen, European Southern Observatory (Germany)
Alain Smette, European Southern Observatory (Chile)
Jörg Stegmeier, European Southern Observatory (Germany)
Lowell E. Tacconi-Garman, European Southern Observatory (Germany)
Stefan Uttenthaler, Instituut voor Sterrenkunde, Katholieke Univ. Leuven (Belgium)
Elena Valenti, European Southern Observatory (Chile)
Ueli Weilenmann, European Southern Observatory (Chile)
Burkhard Wolff, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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