Photometric Analysis of the Close Binary RZ Cas

A total of 5199 photometric observations (1733 obsrvations in each UBV) ofclose binary RZ Cas were made on 46 nights Som November 1991 tsfebruary 1993 with the 35-cm Schmidt Cassegrain reflector atChungbuk National University. We observed eight primarr eclipses with flatbottom which indicate total eclipse. In recent years, Nakamura et at.(1991)recognized that there exist disagreements where the primarr is the totaleclipse or partial one. He estimated the its duration to be 14 minutes witha primary minimum. We determined the durations of the totality withtwenty-seven difsent light cunres which include earlier obsevations. It isfound that the mean value of each duration is to be 17,1 minutes, conespondingto phase 0.01. And also an interpretation of the new light curies will bepresented