SourceEpochImageVisibility
1958-179
1995JUL24 2 GHz , 8 GHz 2 GHz , 8 GHz
1995OCT02 2 GHz , 8 GHz 2 GHz , 8 GHz
1996APR23 15 GHz 15 GHz
1997JAN11 2 GHz , 8 GHz 2 GHz , 8 GHz
1999JUN21 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2004JUL14 2 GHz , 8 GHz 2 GHz , 8 GHz
2006JUL11 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2007JUN26 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2008MAY14 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.