CRIRES: a high-resolution infrared spectrograph for ESO's VLT

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

doi:10.1117/12.551480

30 September 2004 CRIRES: a high-resolution infrared spectrograph for ESO's VLT

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

Author Affiliations +

Proceedings Volume 5492, Ground-based Instrumentation for Astronomy; (2004) https://doi.org/10.1117/12.551480
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

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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, and Stefan Wegerer "CRIRES: a high-resolution infrared spectrograph for ESO's VLT", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); https://doi.org/10.1117/12.551480

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