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Issue A&A
Volume 454, Number 2, August I 2006
APEX Special Booklet
Page(s) L13 - L16
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20065420



A&A 454, L13-L16 (2006)
DOI: 10.1051/0004-6361:20065420

Letter

The Atacama Pathfinder EXperiment (APEX) - a new submillimeter facility for southern skies -

R. Güsten1, L. Å. Nyman2, P. Schilke1, K. Menten1, C. Cesarsky2 and R. Booth3

1  Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
    e-mail: rguesten@mpifr-bonn.mpg.de
2  European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
3  Onsala Space Observatory, 43992 Onsala, Sweden

(Received 12 April 2006 / Accepted 19 April 2006)

Abstract
APEX, the Atacama Pathfinder EXperiment, has been successfully commissioned and is operational. This novel submillimeter telescope is located at 5107 m altitude on Llano de Chajnantor in the Chilean High Andes, on what is considered one of the world's outstanding sites for submillimeter astronomy. The primary reflector with 12 m diameter has been carefully adjusted by means of holography. Its surface smoothness of only 17-18 $\rm {\mu}$m makes APEX suitable for observations up to 200 $\rm {\mu}$m, through all atmospheric submm windows accessible from the ground. First scientific results will be presented in the accompanying papers of this special issue.


Key words: telescopes -- submillimeter



© ESO 2006


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