Obs: Klaus Wenzel Wenigumstadt (Germany) Instr.: 317/1500mm Newton; 406/1829mm Newton; e-mail: wenzel.qso at t-online.de all observations are visual Object Date UT mag CrB R 20130507.851 10.8 Vir CV 20130507.861 12.6 Boo CR 20130507.882 15.0 AGN Mrk 421 20130507.844 12.2 NGC 4151 20130507.847 11.6 Com W 20130507.889 15.2 Klaus Wenzel