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R. M. Schotland and J. D. Copp

Abstract

The optical characteristics of a newly designed two-step pyranometer head are described. The head is suitable for use in the spectral range 400-720 nm. It is characterized by a cosine error which is less than 1.5% over the angular range 0-85° and has a differential polarization cosine error no greater than 3.0% in that same angular interval.

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