Optical Seeing and Infrared Atmospheric Transparency in the Upper Atacama Desert

Details Optical Seeing and Infrared Atmospheric Transparency in the Upper Atacama Desert Optical Seeing and Infrared Atmospheric Transparency in the Upper Atacama Desert

2000-12-20

arxiv.org/abs/astro-ph/0012443v1

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures, LaTex, to appear in Procs. of IAU Workshop "Astronomical Site Evaluation in the Optical and Radio Range" h

Scientific paper

With plans to build a large IR/optical telescope in the Atacama Desert, a site survey campaign has been underway since 1998 to characterize the optical seeing and the IR transparency in the Chajnantor Plateau region. Preliminary results indicate that the Chajnantor region offers excellent astronomical observing conditions in the optical and IR. The region is isolated yet easy to reach, and high quality services are available nearby. We can expect to find: median optical FWHM seeing approaching values of 0.5"--0.6", a percentage of photometric nights of 65% or better, of astronomically useful nights in excess of 80% and median PWV well below 1 mm (with best quartile below 0.5 mm).

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