TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4009 SUBJECT: GRB 050922B,optical observation DATE: 05/09/22 17:02:18 GMT FROM: Eri Sonoda at U of Miyazaki/Japan E.Sonoda,S.Maeno,Y.Tokunaga,M.Yamauchi (University of Miyazaki) "We have observed the field covering the error circle of GRB 050922(GCN4008;Swift-BAT Trigger time is 15:02:00 UT) with the unfiltered CCD camera on the 30-cm telescope at University of Miyazaki. The observation was started 15:28:46 UT on Sep.22. After co-adding a set of 6 images (15:28:46 - 15:37:46 UT) of 30 sec exposures, we have compared with the USNO A2.0 catalog. Preliminary analysis shows there is no new source brighter than 16.1 mag."