Share Email Print
cover

Proceedings Paper

Submillimeter observing conditions on Cerro Chajnantor
Author(s): Simon J. E. Radford; Riccardo Giovanelli; George E. Gull; Charles P. Henderson
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Consistently superb observing conditions are crucial for achieving the scientific objectives of a ground based telescope. For observations at submillimeter wavelengths, choosing a site with very little atmospheric water vapor is paramount. In northern Chile, the high Andes near San Pedro de Atacama are among the highest and driest places on Earth. At the 5000 m Chajnantor plateau, long term measurements have demonstrated observing conditions are excellent for submillimeter astronomy. Even better conditions prevail on higher mountain peaks in the vicinity. For the CCAT, we have selected a candidate site at 5612 m near the summit of Cerro Chajnantor. Radiosonde measurements, meteorological data, and measurements of the 350 Consistently superb observing conditions are crucial for achieving the scientific objectives of a ground based telescope. For observations at submillimeter wavelengths, choosing a site with very little atmospheric water vapor is paramount. In northern Chile, the high Andes near San Pedro de Atacama are among the highest and driest places on Earth. At the 5000 m Chajnantor plateau, long term measurements have demonstrated observing conditions are excellent for submillimeter astronomy. Even better conditions prevail on higher mountain peaks in the vicinity. For the CCAT, we have selected a candidate site at 5612 m near the summit of Cerro Chajnantor. Radiosonde measurements, meteorological data, and measurements of the 350 μm transparency all indicate submillimeter observing conditions are consistently better at the CCAT site than at the plateau. transparency all indicate submillimeter observing conditions are consistently better at the CCAT site than at the plateau.

Paper Details

Date Published: 17 July 2008
PDF: 7 pages
Proc. SPIE 7012, Ground-based and Airborne Telescopes II, 70121Z (17 July 2008); doi: 10.1117/12.789335
Show Author Affiliations
Simon J. E. Radford, California Institute of Technology (United States)
Riccardo Giovanelli, Cornell Univ. (United States)
George E. Gull, Cornell Univ. (United States)
Charles P. Henderson, Cornell Univ. (United States)


Published in SPIE Proceedings Vol. 7012:
Ground-based and Airborne Telescopes II
Larry M. Stepp; Roberto Gilmozzi, Editor(s)

© SPIE. Terms of Use
Back to Top