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Proceedings Paper

Submillimeter heterodyne arrays for APEX
Author(s): R. Güsten; A. Baryshev; A. Bell; A. Belloche; U. Graf; H. Hafok; S. Heyminck; S. Hochgürtel; C. E. Honingh; K. Jacobs; C. Kasemann; B. Klein; T. Klein; A. Korn; I. Krämer; C. Leinz; A. Lundgren; K. M. Menten; K. Meyer; D. Muders; F. Pacek; D. Rabanus; F. Schäfer; P. Schilke; G. Schneider; J. Stutzki; G. Wieching; A. Wunsch; F. Wyrowski
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Paper Abstract

We report on developments of submillimeter heterodyne arrays for high resolution spectroscopy with APEX. Shortly, we will operate state-of-the-art instruments in all major atmospheric windows accessible from Llano de Chajnantor. CHAMP+, a dual-color 2×7 element heterodyne array for operation in the 450 μm and 350 μm atmospheric windows is in operation since late 2007. With its state-of-the-art SIS detectors and wide tunable local oscillators, its cold optics with single sideband filters and with 3 GHz of processed IF bandwidth per pixel, CHAMP+ does provide outstanding observing capabilities. The Large APEX sub-Millimeter Array (LAsMA) is in the final design phase, with an installation goal in 2009. The receiver will operate 7 and 19 pixels in the lower submillimeter windows, 285-375 GHz and 385-520 GHz, respectively. The front-ends are served by an array of digital wideband Fast Fourier Transform spectrometers currently processing up to 32×1.5 (optionally 1.8) GHz of bandwidth. For CHAMP+, we process 2.8 GHz of instantaneous bandwidth (in 16.4 k channels) for each of the 14 pixels.

Paper Details

Date Published: 19 July 2008
PDF: 12 pages
Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 702010 (19 July 2008); doi: 10.1117/12.788271
Show Author Affiliations
R. Güsten, Max-Planck-Institut für Radioastronomie (Germany)
A. Baryshev, SRON Netherlands Institute for Space Research (Netherlands)
A. Bell, Max-Planck-Institut für Radioastronomie (Germany)
A. Belloche, Max-Planck-Institut für Radioastronomie (Germany)
U. Graf, Univ. zu Köln (Germany)
H. Hafok, Max-Planck-Institut für Radioastronomie (Germany)
S. Heyminck, Max-Planck-Institut für Radioastronomie (Germany)
S. Hochgürtel, Max-Planck-Institut für Radioastronomie (Germany)
C. E. Honingh, Univ. zu Köln (Germany)
K. Jacobs, Univ. zu Köln (Germany)
C. Kasemann, Max-Planck-Institut für Radioastronomie (Germany)
B. Klein, Max-Planck-Institut für Radioastronomie (Germany)
T. Klein, Max-Planck-Institut für Radioastronomie (Germany)
A. Korn, Max-Planck-Institut für Radioastronomie (Germany)
I. Krämer, Max-Planck-Institut für Radioastronomie (Germany)
C. Leinz, Max-Planck-Institut für Radioastronomie (Germany)
A. Lundgren, APEX, European Southern Observatory (Chile)
K. M. Menten, Max-Planck-Institut für Radioastronomie (Germany)
K. Meyer, Max-Planck-Institut für Radioastronomie (Germany)
D. Muders, Max-Planck-Institut für Radioastronomie (Germany)
F. Pacek, Max-Planck-Institut für Radioastronomie (Germany)
D. Rabanus, APEX, European Southern Observatory (Chile)
F. Schäfer, Max-Planck-Institut für Radioastronomie (Germany)
P. Schilke, Max-Planck-Institut für Radioastronomie (Germany)
G. Schneider, Max-Planck-Institut für Radioastronomie (Germany)
J. Stutzki, Univ. zu Köln (Germany)
G. Wieching, Max-Planck-Institut für Radioastronomie (Germany)
A. Wunsch, Max-Planck-Institut für Radioastronomie (Germany)
F. Wyrowski, Max-Planck-Institut für Radioastronomie (Germany)


Published in SPIE Proceedings Vol. 7020:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
William D. Duncan; Wayne S. Holland; Stafford Withington; Jonas Zmuidzinas, Editor(s)

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