The authors describe a technique for recording scatter-plates. To achieve a high degree of flip symmetry, an interferometric technique to control the 180°-rotation within 1.3 seconds of arc was used. To obtain a nearly uniform spectrum for the scatter-plate, a holographic recording technique was devised. Several scatter-plates, corresponding to different ranges of surface f/#s, were recorded with these techniques. To avoid the need for future reconstruction of the recording set-up, a system for contact replication, in which the original scatter-plates were kept as masters, was developed.
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