ИСТИНА

Here we report the results of CCD observations of classical dwarf nova SS Cyg carried out with the two 60 cm telescopes in Crimea during the last years. These observations cover a few outbursts in 2006, 2007 and 2008. Power spectrum analysis of our CCD data clearly shows the existence of rapid periodic oscillations in the light curve of SS Cyg at the stage of decline after maximum. CCD observations of SS Cyg in autumn 2006 outburst revealed oscillations with the two periods 10s and 76s, in November 2007 - with 41s period and in January 2008 with 98s. We interpret detected variations as quisi-periodic oscillations.