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Proceedings Paper

GREAT: a first light instrument for SOFIA
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Paper Abstract

GREAT (German REceiver for Astronomy at Terahertz frequencies) has been selected as first-light instrument for the early science flights of SOFIA, scheduled for early 2009. In its first-light configuration GREAT will allow observations in two out of three FIR bands: two low frequency channels 1.25-1.5 THz and 1.82-1.92 THz for observations of, e.g., highly excited CO and of ionized carbon, and a 2.7 THz channel focusing on the ground-state transition of deuterated molecular hydrogen HD. A forth channel, centered on the 4.7 THz transition of atomic oxygen will become available later. The observatory schedule asks for delivery of the instrument in early 2009. At the time of the conference system level assembly, integration, and verification (AIV) is ongoing, and we report on the performance of the integrated system. Shipment to NASA/DAOF (Dryden aircraft operations facility) in Palmdale/California for aircraft integration is currently planned for mid December 2008.

Paper Details

Date Published: 25 July 2008
PDF: 7 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 701410 (25 July 2008); doi: 10.1117/12.788273
Show Author Affiliations
S. Heyminck, Max-Planck-Institut für Radioastronomie (Germany)
R. Güsten, Max-Planck-Institut für Radioastronomie (Germany)
P. Hartogh, Max-Planck-Institut für Sonnensystemforschung (Germany)
H.-W. Hübers, Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
J. Stutzki, KOSMA, Univ. zu Köln (Germany)
U. U. Graf, KOSMA, Univ. zu Köln (Germany)

Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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