TITLE: GCN CIRCULAR NUMBER: 3806 SUBJECT: GRB 050813: Non-fading of afterglow candidate DATE: 05/08/15 02:00:21 GMT FROM: Edo Berger at Carnegie Obs Edo Berger and Mike Gladders (Carnegie Observatories) report: "We imaged the field of GRB 050813 (GCN 3788) with IMACS on the Magellan/Baade telescope on Aug 14.98 UT. Observations were obtained in R-band under mostly clear but non-photometric conditions. In addition to galaxies B and C we also detect an object at the position of the source proposed as a possible afterglow by Bloom (GCN 3802). Since the object has not faded away in over 14 hours (and in addition appears to be extended) we consider it unlikely that this is the afterglow of GRB 050813."