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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 3 CONTRIBUTI IN ATTI DI CONVEGNO (Proceedings)
  4. 3.01 Contributi in Atti di convegno
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/24473
Title: Characterizing the cross dispersion reflection gratings of CRIRES+
Authors: Follert, Roman
Taubert, Dieter
Hollandt, Jörg
Monte, Christian
OLIVA, Ernesto 
Seemann, Ulf
Löwinger, Tom
Anwand-Heerwart, Heiko
Schmidt, Christof
Dorn, Reinhold J.
Bristow, Paul
Hatzes, Artie
Reiners, Ansgar
Piskunov, Nikolai
Heiter, Ulrike
Stempels, Eric
Marquart, Thomas
Lavail, Alexis
Cumani, Claudio
Grunhut, Jason
Haimerl, Andreas
Hinterschuster, Renate
Ives, Derek J.
Jung, Yves
Kerber, Florian
Klein, Barbara
Lizon, Jean Louis
Molina-Conde, Ignacio
Nicholson, Belinda
ORIGLIA, Livia 
Pasquini, Luca
Paufique, Jérôme
Stegmeier, Jörg
Tordo, Sebastien
Issue Date: 2016
Volume: Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Editors: Navarro, Ramón; Burge, James H.
Series: PROCEEDINGS OF SPIE 
Number: 9912
First Page: 99122B
Abstract: The CRIRES+ project attempts to upgrade the CRIRES instrument into a cross dispersed Echelle spectrograph with a simultaneous recording of 8-10 diffraction orders. In order to transform the CRIRES spectrograph into a cross-dispersing instrument, a set of six reflection gratings, each one optimized for one of the wavelength bands CRIRES+ will operate in (YJHKLM), will be used as cross dispersion elements in CRIRES+. Due to the upgrade nature of the project, the choice of gratings depends on the fixed geometry of the instrument. Thus, custom made gratings would be required to achieve the ambitious design goals. Custom made gratings have the disadvantage, though, that they come at an extraordinary price and with lead times of more than 12 months. To mitigate this, a set of off-the-shelf gratings was obtained which had grating parameters very close to the ones being identified as optimal. To ensure that the rigorous specifications for CRIRES+ will be fulfilled, the CRIRES+ team started a collaboration with the Physikalisch-Technische Bundesanstalt Berlin (PTB) to characterize gratings underconditions similar to the operating conditions in CRIRES+ (angle of incidence, wavelength range). The respective test setup was designed in collaboration between PTB and the CRIRES+ consortium. The PTB provided optical radiation sources and calibrated detectors for each wavelength range. With this setup, it is possible to measure the absolute efficiency of the gratings both wavelength dependent and polarization state dependent in a wavelength range from 0.9 μm to 6 μm.
Conference Name: Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Conference Place: Edinburgh, UK
Conference Date: 26 June-1 July, 2016
URI: http://hdl.handle.net/20.500.12386/24473
URL: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9912/1/Characterizing-the-cross-dispersion-reflection-gratings-of-CRIRES/10.1117/12.2232569.short
ISSN: 0277-786X
ISBN: 9781510602045
DOI: 10.1117/12.2232569
Bibcode ADS: 2016SPIE.9912E..2BF
Fulltext: open
Appears in Collections:3.01 Contributi in Atti di convegno

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