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GREAT: The German first light heterodyne instrument for SOFIA

Graf, Urs U. and Heyminck, Stefan and Güsten, Rolf and Hartogh, Paul and Hübers, Heinz-Wilhelm and Jacobs, Karl and Philipp, Martin and Rabanus, David and Röser, Hans-Peter and Stutzki, Jürgen and van der Wal, Peter and Wagner-Gentner, Armin (2006) GREAT: The German first light heterodyne instrument for SOFIA. In: Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 6275, 62750K-1-62750K-7. SPIE. Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 2006-05-29 - 2006-05-31, Orlando [Florida (USA)]. ISBN 0-8194-6340-X. ISSN 0277-786X

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Abstract

GREAT, the German REceiver for Astronomy at Terahertz frequencies, is a first generation SOFIA dual channel heterodyne PI-instrument for high resolution spectroscopy. The system is developed by a cosortium of German research institutes. The receiver will allow simultaneous observations in two out of the following three far-infrared frequency bands: - a 1.4-1.9 THz channel for e.g. the fine-stucture line of ionized carbon [CII] at 158µm; - a 2.4-2.7 THz channel for e.g. the 112µm transition of HD; and - a 4.7 THz channel for the 63µm fine-structure line of neutral atomic oxygen. Hot electron bolometers (HEB) mixers provide state of the art sensitivity. A spectral resolving power of up to 10<sup>8</sup> is achieved with chirp transform spectrometers, and a total bandwidth of 4 GHz at 1 MHz resolution is reached with wide band acousto-optical spectrometers. The modular concept of GREAT allows to observe with any combination of two out of the three channels aboard SOFIA. A more complete frequency coverage of the THz regime by adding additional GREAT channels is possible in the future. The adaptation of new LO-, mixer- or backend-techniques is easily possible. We describe details of the receiver and the results of first performance tests of the system at 1.9 THz.

Document Type:Conference or Workshop Item (Speech)
Title:GREAT: The German first light heterodyne instrument for SOFIA
Authors:
AuthorsInstitution or Email of Authors
Graf, Urs U.KOSMA, I. Physikalisches Institut Universität zu Köln
Heyminck, StefanMax-Planck-Institut für Radioastronomie, Bonn
Güsten, RolfMax-Planck-Institut für Radioastronomie, Bonn
Hartogh, PaulMax-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau
Hübers, Heinz-WilhelmUNSPECIFIED
Jacobs, KarlKOSMA, I. Physikalisches Institut Universität zu Köln
Philipp, MartinKOSMA, I. Physikalisches Institut Universität zu Köln
Rabanus, DavidKOSMA, I. Physikalisches Institut Universität zu Köln
Röser, Hans-PeterIRS, Universität Stuttgart
Stutzki, JürgenKOSMA, I. Physikalisches Institut Universität zu Köln
van der Wal, PeterMax-Planck-Institut für Radioastronomie, Bonn
Wagner-Gentner, ArminKOSMA, I. Physikalisches Institut Universität zu Köln
Date:31 May 2006
Journal or Publication Title:Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Refereed publication:Yes
In ISI Web of Science:No
Volume:6275
Page Range:62750K-1-62750K-7
Publisher:SPIE
Series Name:Proceedings of SPIE
ISSN:0277-786X
ISBN:0-8194-6340-X
Status:Published
Keywords:SOFIA, HEB, THz, heterodyne receiver
Event Title:Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Event Location:Orlando [Florida (USA)]
Event Type:international Conference
Event Dates:2006-05-29 - 2006-05-31
Organizer:SPIE
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt SOFIA (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Institute of Planetary Research
Deposited By: Dr. Heinz-Wilhelm Hübers
Deposited On:24 Aug 2006
Last Modified:27 Apr 2009 13:02

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