The Long Term Optical Variability of the BL Lac object S5 0716+714: Evidence for a Precessing Jet

R. Nesci, E. Massaro, C. Rossi +3

We present the historic light curve of the BL Lac object S5 0716+714, spanning the time interval from 1953 to 2003, built using Asiago archive plates and our recent CCD observation…