Light Variations of the Anomalous Central Star of Planetary Nebula Sh 2-71

We present an analysis of light variations in UBV (RI)_{C} of the anomalous object in the center of planetary nebula Sh 2-71. We refined the linear ephemeris of the light maxima to JD_{max}=2449862.0+68.101(E-96), but also identified long-term, obviously non-periodic variations. The latter manifest themselves in large O-C shifts, a variable profile of light curves (hereafter LC) and changes in the mean brightness of the object. Our spectroscopic observations suggested the presence of a superdense nebula in the center of Sh 2-71.