SourceEpochImageVisibility
0738+313
OI363
1997JAN10 2 GHz , 8 GHz 2 GHz , 8 GHz
2007JAN24 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2009JAN21 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.