TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3302 SUBJECT: GRB050421 DATE: 05/04/21 12:48:00 GMT FROM: Guy Pooley at MRAO, Cambridge, UK The field of GRB050421 (GCN 3296, using the updated position in GCN 3301) was observed with the Ryle Telescope in Cambridge at 15 GHz from 08:37 to 12:12 UT on 2005 Apr 21 (4h25m to 8h after the trigger). The angular resolution is 25". A formal measure of the flux density at the position in GCN 3301 is 0.59 mJy with an rms noise 0.27 mJy, and is therefore not a convincing detection. This message is quotable. Guy Pooley, Astrophysics, Cavendish Laboratory