SourceEpochImageVisibility
0820+560
1995OCT12 2 GHz , 8 GHz 2 GHz , 8 GHz
2001JAN29 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2004FEB15 2 GHz , 8 GHz 2 GHz , 8 GHz
A "+" after the frequency indicates VLBA+ observations.