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Proceedings Paper

CRIRES: a high-resolution infrared spectrograph for ESO's VLT
Author(s): Hans-Ulrich Kaeufl; Pascal Ballester; Peter Biereichel; Bernard Delabre; Rob Donaldson; Reinhold Dorn; Enrico Fedrigo; Gert Finger; Gerhard Fischer; Francis Franza; Domingo Gojak; Gotthard Huster; Yves Jung; Jean-Louis Lizon; Leander Mehrgan; Manfred Meyer; Alan Moorwood; Jean-Francois Pirard; Jerome Paufique; Eszter Pozna; Ralf Siebenmorgen; Armin Silber; Joerg Stegmeier; Stefan Wegerer
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Paper Abstract

CRIRES is a cryogenic, pre-dispersed, infrared echelle spectrograph designed to provide a resolving power lambda/(Delta lambda) of 105 between 1 and 5mu m at the Nasmyth focus B of the 8m VLT unit telescope #1 (Antu). A curvature sensing adaptive optics system feed is used to minimize slit losses and to provide diffraction limited spatial resolution along the slit. A mosaic of 4 Aladdin~III InSb-arrays packaged on custom-fabricated ceramics boards has been developed. This provides for an effective 4096x512 pixel focal plane array, to maximize the free spectral range covered in each exposure. Insertion of gas cells to measure high precision radial velocities is foreseen. For measurement of circular polarization a Fresnel rhomb in combination with a Wollaston prism for magnetic Doppler imaging is foreseen. The implementation of full spectropolarimetry is under study. This is one result of a scientific workshop held at ESO in late 2003 to refine the science-case of CRIRES. Installation at the VLT is scheduled during the first half of 2005. Here we briefly recall the major design features of CRIRES and describe its current development status including a report of laboratory testing.

Paper Details

Date Published: 30 September 2004
PDF: 10 pages
Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.551480
Show Author Affiliations
Hans-Ulrich Kaeufl, European Southern Observatory (Germany)
Pascal Ballester, European Southern Observatory (Germany)
Peter Biereichel, European Southern Observatory (Germany)
Bernard Delabre, European Southern Observatory (Germany)
Rob Donaldson, European Southern Observatory (Germany)
Reinhold Dorn, European Southern Observatory (Germany)
Enrico Fedrigo, European Southern Observatory (Germany)
Gert Finger, European Southern Observatory (Germany)
Gerhard Fischer, European Southern Observatory (Germany)
Francis Franza, European Southern Observatory (Germany)
Domingo Gojak, European Southern Observatory (Germany)
Gotthard Huster, European Southern Observatory (Germany)
Yves Jung, European Southern Observatory (Germany)
Jean-Louis Lizon, European Southern Observatory (Germany)
Leander Mehrgan, European Southern Observatory (Germany)
Manfred Meyer, European Southern Observatory (Germany)
Alan Moorwood, European Southern Observatory (Germany)
Jean-Francois Pirard, European Southern Observatory (Germany)
Jerome Paufique, European Southern Observatory (Germany)
Eszter Pozna, European Southern Observatory (Germany)
Ralf Siebenmorgen, European Southern Observatory (Germany)
Armin Silber, European Southern Observatory (Germany)
Joerg Stegmeier, European Southern Observatory (Germany)
Stefan Wegerer, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 5492:
Ground-based Instrumentation for Astronomy
Alan F. M. Moorwood; Masanori Iye, Editor(s)

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