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The first results of ground base observations of cataclysmic variable intermidiate polar GK Per are presented. These observations were performed with UBV photometer on the 60-cm telescope of Sternberg Astronomical Institute Crimean station in October 2004. At the time of our observations GK Per was in outburst. This star was chosen as a good target for observations with the space observatory INTEGRAL. Simultaneous optical photometric and CCD observations (V,R.I bands) were also probvided for completeness of the study.