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The " plus " for CRIRES: enabling better science at infrared wavelength and high spectral resolution at the ESO VLT
European Org Astron Res Southern Hemisphere, Karl Schwarzschild Str 2, D-85748 Garching, Germany..
Thuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany..
European Org Astron Res Southern Hemisphere, Karl Schwarzschild Str 2, D-85748 Garching, Germany..
European Org Astron Res Southern Hemisphere, Karl Schwarzschild Str 2, D-85748 Garching, Germany..
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2016 (English)In: GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VI / [ed] Christopher J Evans, 2016, Vol. 9908, 99080IConference paper (Refereed)
Abstract [en]

The adaptive optics (AO) assisted CRIRES instrument was a IR (0.92 - 5.2 mu m) high-resolution spectrograph in operation from 2006 to 2014 at the Very Large Telescope (VLT) observatory. CRIRES was a unique instrument, accessing a parameter space (wavelength range and spectral resolution) up to now largely uncharted. It consisted of a single-order spectrograph providing long-slit (40 arcsecond) spectroscopy with a resolving power up to R=100 000. However the setup was limited to a narrow, single-shot, spectral range of about 1/70 of the central wavelength, resulting in low observing efficiency for many scientific programmes requiring a broad spectral coverage. The CRIRES upgrade project, CRIRES, transfouns this VLT instrument into a cross-dispersed spectrograph to increase the simultaneously covered wavelength range by a factor of ten. A new and larger detector focal plane array of three Hawaii 2RG detectors with 5.3 mu m cut-off wavelength will replace the existing detectors. For advanced wavelength calibration, custom-made absorption gas cells and an etalon system will be added. A spectro-polarimetric unit will allow the recording of circular and linear polarized spectra. This upgrade will be supported by dedicated data reduction software allowing the community to take full advantage of the new capabilities. CRIRES has now entered its assembly and integration phase and will return with all new capabilities by the beginning of 2018 to the Very Large Telescope in Chile. This article will provide the reader with an update of the current status of the instrument as well as the remaining steps until final installation at the Paranal Observatory.

Place, publisher, year, edition, pages
2016. Vol. 9908, 99080I
Series
Proceedings of SPIE, ISSN 0277-786X ; 9908
Keyword [en]
astronomical instrumentation, infrared spectrographs, high spectral resolution, upgrade of existing VLT instruments, infrared spectrometers, wavelength calibration, radial-velocities, extra-solar planets
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-316359DOI: 10.1117/12.2232837ISI: 000391509100013ISBN: 978-1-5106-0196-3 (print)OAI: oai:DiVA.org:uu-316359DiVA: diva2:1078814
Conference
Conference on Ground-Based and Airborne Instrumentation for Astronomy VI, JUN 26-30, 2016, Edinburgh, SCOTLAND
Available from: 2017-03-06 Created: 2017-03-06 Last updated: 2017-03-06Bibliographically approved

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Heiter, UlrikeLavail, AlexisMarquart, ThomasPiskunov, NikolaiStempels, Eric
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