Abstract
A small, handheld skylight photometer, incorporated into a sun photometer and capable of measuring sky radiation to within 2° of the sun at λ 0.50 and 0.93 μm is described. Calibration procedures are discussed; solar measurements in the wideband 0.93-μm channel show the expected influence of water vapor. Formulas to obtain the aerosol scattering function are presented. Samples of measured and theoretical aerosol scattering functions are discussed.
© 1987 Optical Society of America
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