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4GREAT -- a four-color receiver for high-resolution airborne terahertz spectroscopy

  • 4GREAT is an extension of the German Receiver for Astronomy at Terahertz frequencies (GREAT) operated aboard the Stratospheric Observatory for Infrared Astronomy (SOFIA). The spectrometer comprises four different detector bands and their associated subsystems for simultaneous and fully independent science operation. All detector beams are co-aligned on the sky. The frequency bands of 4GREAT cover 491-635, 890-1090, 1240-1525 and 2490-2590 GHz, respectively. This paper presents the design and characterization of the instrument, and its in-flight performance. 4GREAT saw first light in June 2018, and has been offered to the interested SOFIA communities starting with observing cycle 6.

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Document Type:Preprint
Author:Carlos A. Durán, Rolf Güsten, Christophe Risacher, Andrej Görlitz, Bernd Klein, Nicolas Reyes, Oliver Ricken, Hans-Joachim Wunsch, Urs U. Graf, Karl Jacobs, Cornelia E. Honingh, Jürgen Stutzki, Gert de Lange, Yan Delorme, Jean-Michel Krieg, Dariusz C. Lis
Number of pages:11
ArXiv Id:http://arxiv.org/abs/2012.05106
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2020/12/09
Publication status:Accepted for publication in IEEE Transactions on Terahertz Science and Technology
Keyword:HEB mixer; SIS mixer; airborne astronomy; far-infrared astronomy; heterodyne spectroscopy; receivers; submillimeter-wave technology; superconducting devices
Departments, institutes and facilities:Fachbereich Ingenieurwissenschaften und Kommunikation
Dewey Decimal Classification (DDC):5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften
Entry in this database:2020/12/16
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International