A Swedish heterodyne facility instrument for the APEX telescope
Journal article, 2008

In March 2008, the APEX facility instrument was installed on the telescope at the site of Lliano Chajnantor in northern Chile. The main objective of the paper is to introduce the new instrument to the radio astronomical community. It describes the hardware configuration and presents some initial results from the on-sky commissioning. The heterodyne instrument covers frequencies between 211 GHz and 1390 GHz divided into four bands. The first three bands are sideband-separating mixers operating in a single sideband mode and based on superconductor-insulator-superconductor (SIS) tunnel junctions. The fourth band is a hot-electron bolometer, waveguide balanced mixer. All bands are integrated in a closedcycle temperature-stabilized cryostat and are cooled to 4 K. We present results from noise temperature, sideband separation ratios, beam, and stability measurements performed on the telescope as a part of the receiver technical commissioning. Examples of broad extragalactic lines are also included.

instrumentation

detectors

telescopes

spectroscopic

radio lines

Author

Vessen Vassilev

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Denis Meledin

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Igor Lapkin

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Victor Belitsky

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Olle Nyström

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Doug Henke

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Alexey Pavolotskiy

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Raquel Monje

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Christophe Risacher

European Southern Observatory Santiago

Michael Olberg

Chalmers, Department of Radio and Space Science, Radio Astronomy and Astrophysics

Magnus Strandberg

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Erik Sundin

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Mathias Fredrixon

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Sven-Erik Ferm

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Vincent Desmaris

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Dimitar Milkov Dochev

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Miroslav Pantaleev

Chalmers, Department of Radio and Space Science, National Facility for Radio Astronomy

Per Bergman

Chalmers, Department of Radio and Space Science, National Facility for Radio Astronomy

Hans Olofsson

Chalmers, Department of Radio and Space Science, National Facility for Radio Astronomy

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 490 3 1157-1163

Subject Categories

Astronomy, Astrophysics and Cosmology

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1051/0004-6361

More information

Latest update

11/5/2018