SourceEpochImageVisibility
1642+690
1995OCT12 2 GHz , 8 GHz 2 GHz , 8 GHz
2000JAN31 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2000JUL06 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2000OCT23 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2001JAN29 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2001MAY09 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2002JAN16 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2003JUL09 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2010JUN23 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.