Preliminary analysis of photometric variations of central star of   planetary nebula Sh 2-71
  We confirmed the presence of regular UBVRIc light variations of the object in the centre of planetary nebula Sh 2-71, the improved period of them being P =(68.132+/-0.005) days. The shapes and amplitudes of light curves in particular colours are briefly discussed. 
Zdenek Mikulasek, Lubos Kohoutek, Miloslav Zejda, Ondrej Pejcha