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CRIRES plus: a cross-dispersed high-resolution infrared spectrograph for the ESO VLT
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2014 (English)In: GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY V, 2014, Vol. 9147, 914719Conference paper (Refereed)
Abstract [en]

High-resolution infrared spectroscopy plays an important role in astrophysics from the search for exoplanets to cosmology. Yet, many existing infrared spectrographs are limited by a rather small simultaneous wavelength coverage. The AO assisted CRIRES instrument, installed at the ESO VLT on Paranal, is one of the few IR (0.92-5.2 mu m) high-resolution spectrographs in operation since 2006. However it has a limitation that hampers its efficient use: the wavelength range covered in a single exposure is limited to similar to 15 nanometers. The CRIRES Upgrade project (CRIRES+) will transform CRIRES into a cross-dispersed spectrograph and will also add new capabilities. By introducing cross-dispersion elements the simultaneously covered wavelength range will be increased by at least a factor of 10 with respect to the present configuration, while the operational wavelength range will be preserved. For advanced wavelength calibration, new custom made absorption gas cells and etalons will be added. A spectro-polarimetric unit will allow one for the first time to record circularly polarized spectra at the highest spectral resolution. This will be all supported by a new data reduction software which will allow the community to take full advantage of the new capabilities of CRIRES+.

Place, publisher, year, edition, pages
2014. Vol. 9147, 914719
, Proceedings of SPIE, ISSN 0277-786X
Keyword [en]
Upgrade of existing instrument, high spectral resolution spectrograph, infrared spectrograph
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:uu:diva-257488DOI: 10.1117/12.2054197ISI: 000354527800041ISBN: 978-0-8194-9615-7OAI: oai:DiVA.org:uu-257488DiVA: diva2:846417
5th Conference on Ground-Based and Airborne Instrumentation for Astronomy, JUN 22-26, 2014, Montreal, CANADA
Available from: 2015-08-17 Created: 2015-07-02 Last updated: 2015-08-17Bibliographically approved

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Piskunov, NikolaiStempels, EricHeiter, UlrikeMarquart, ThomasLockhart, Matthew
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