SourceEpochImageVisibility
1342+662
1995OCT12 2 GHz , 8 GHz 2 GHz , 8 GHz
1999JUN21 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2008JAN23 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2009OCT07 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.