CRIRES: commissioning and first science results

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

doi:10.1117/12.787259

25 July 2008 CRIRES: commissioning and first science results

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

Author Affiliations +

Proceedings Volume 7014, Ground-based and Airborne Instrumentation for Astronomy II; 70140W (2008) https://doi.org/10.1117/12.787259
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

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.

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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, and Burkhard Wolff "CRIRES: commissioning and first science results", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140W (25 July 2008); https://doi.org/10.1117/12.787259

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