Orbital Period Variations in Eclipsing Post Common Envelope Binaries

S. G. Parsons, T. R. Marsh, C. M. Copperwheat +10

We present high speed ULTRACAM photometry of the eclipsing post common envelope binaries DE CVn, GK Vir, NN Ser, QS Vir, RR Cae, RX J2130.6+4710, SDSS 0110+1326 and SDSS 0303+0054…