SourceEpochImageVisibility
1514+197
1997JAN10 2 GHz , 8 GHz 2 GHz , 8 GHz
2000OCT23 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2007JAN24 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.