Twenty years of atmospheric extinction at McDonald Observatory
- 1 November 1986
- journal article
- Published by IOP Publishing in Publications of the Astronomical Society of the Pacific
- Vol. 98 (609) , 1201
- https://doi.org/10.1086/131922
Abstract
Atmospheric extinction coefficients in the U, B, V bands have been measured at McDonald Observatory on 382 nights covering the 20-year period December 1960 to December 1980. Analyses of these data characterize the natural levels and variations in atmospheric extinction during both perturbed (Mount Agung eruption) and unperturbed times. The need for nightly extinction measurements is clearly shown. No significant long-term trends were found. Power spectrum analysis shows only the sinusoidal seasonal variation with minimum extinction in January.Keywords
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