ALMA Memo #334 - Revision 1
Atmospheric Transparency at 225 GHz over Chajnantor, Mauna Kea, and the South Pole

Simon J. E. Radford and Richard A. Chamberlin
December 01, 2000

Measurements of the 225 GHz atmospheric transparency with functionally identical tipping radiometers at Mauna Kea, the South Pole, and Chajnantor indicate periods of excellent observing conditions at all three sites. Conditions at Chajnantor and the South Pole are better than at Mauna Kea. The first quartile zenith transparency at Chajnantor and the South Pole are roughly equal. During the best conditions at Chajnantor, however, the zenith transparency is better than during the best conditions at the South Pole.

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Last modified: November 13, 2000