Submillimeter heterodyne arrays for APEX

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

doi:10.1117/12.788271

19 July 2008 Submillimeter heterodyne arrays for APEX

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

Author Affiliations +

Proceedings Volume 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV; 702010 (2008) https://doi.org/10.1117/12.788271
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

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.

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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, and F. Wyrowski "Submillimeter heterodyne arrays for APEX", Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 702010 (19 July 2008); https://doi.org/10.1117/12.788271

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