SL-4 S-190 spectroradiometric accuracy

A procedure used for determining radiometric accuracy, consisting of two phases is presented. In the first phase a sensitometer was used as a calibrated radiometric target; while in the second, the moon was employed. Since the moon is a nonhomogeneous target whose radiometric signature is not as well-known as the irradiants of the sensitometer, the majority of this effort was directed towards the reduction and analysis of the sensitometric data.