Atmospheric optical turbulence profiling by stellar scintillometers - An instrument evaluation experiment

Details Atmospheric optical turbulence profiling by stellar scintillometers - An instrument evaluation experiment Atmospheric optical turbulence profiling by stellar scintillometers - An instrument evaluation experiment

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apopt..27.2214c&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 27, June 1, 1988, p. 2214-2221.

Statistics

Methodology

2

Atmospheric Turbulence, Optical Measurement, Scintillation, Signal To Noise Ratios, Calibrating, Line Of Sight, Methodology, Photomultiplier Tubes, Stellar Luminosity

Scientific paper

Two identical atmospheric optical turbulence profiling instruments were operated over a period from March 15 to April 20, 1985 at the Air Force Maui Optical Station on Mount Haleakala. The daily average results of looking along common lines of sight through identical atmospheres show systematic differences at lower altitudes and near agreement at higher altitudes. It is suspected that spatially nonuniform PMT photocathode responses and incompletely subtracted background noise could significantly affect the turbulence values measured at lower altitudes and contribute to the low altitude systematic differences. The average results of looking along two different lines of sight through different regions of the atmosphere show additional systematic differences at higher altitudes, which are not due to instrument bias. These are believed to be due to genuine horizontal structure in the distribution of atmospheric optical turbulence above the 10-km level.

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