Obs: Klaus Wenzel Wenigumstadt (Germany) Instr.: 317/1500mm Newton; e-mail: wenzel.qso at t-online.de all observations are visual Object Date UT mag CrB R 20130501.847 10.9 CrB T 20130501.851 10.2 AGN Mrk 421 20130501.840 12.1 NGC 4151 20130501.844 11.6 Klaus Wenzel