SourceEpochImageVisibility
2121+053
1995JUL24 2 GHz , 8 GHz 2 GHz , 8 GHz
1995OCT02 2 GHz , 8 GHz 2 GHz , 8 GHz
2000JUL06 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2004FEB15 2 GHz , 8 GHz 2 GHz , 8 GHz
2008MAY14 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.