We outline the economic arguments in favor of using large parabolic dishes for CPV. We then discuss methods that have been employed to quantify the optical and tracking properties of PETAL, a 400 m2 parabolic dish facility located at Sede Boqer in the Negev desert.Attention is drawn to the problem of light homogenization at the focal plane, and a method is discussed for achieving adequate homogeneity for CPV purposes.
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