SourceEpochImageVisibility
1830+285
1997JAN11 2 GHz , 8 GHz 2 GHz , 8 GHz
2009JAN21 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2009OCT07 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.