30 September 2004 CRIRES: a high-resolution infrared spectrograph for ESO's VLT
Author Affiliations +
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.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hans-Ulrich Kaeufl, Hans-Ulrich Kaeufl, Pascal Ballester, Pascal Ballester, Peter Biereichel, Peter Biereichel, Bernard Delabre, Bernard Delabre, Rob Donaldson, Rob Donaldson, Reinhold Dorn, Reinhold Dorn, Enrico Fedrigo, Enrico Fedrigo, Gert Finger, Gert Finger, Gerhard Fischer, Gerhard Fischer, Francis Franza, Francis Franza, Domingo Gojak, Domingo Gojak, Gotthard Huster, Gotthard Huster, Yves Jung, Yves Jung, Jean-Louis Lizon, Jean-Louis Lizon, Leander Mehrgan, Leander Mehrgan, Manfred Meyer, Manfred Meyer, Alan Moorwood, Alan Moorwood, Jean-Francois Pirard, Jean-Francois Pirard, Jerome Paufique, Jerome Paufique, Eszter Pozna, Eszter Pozna, Ralf Siebenmorgen, Ralf Siebenmorgen, Armin Silber, Armin Silber, Joerg Stegmeier, Joerg Stegmeier, Stefan Wegerer, Stefan Wegerer, } "CRIRES: a high-resolution infrared spectrograph for ESO's VLT", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.551480; https://doi.org/10.1117/12.551480
PROCEEDINGS
10 PAGES


SHARE
Back to Top