SourceEpochImageVisibility
1022+194
1995APR12 2 GHz , 8 GHz 2 GHz , 8 GHz
1998AUG10 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1998DEC21 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1999APR15 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2005AUG26 8 GHz 8 GHz
A "+" after the frequency indicates VLBA+ observations.