TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2998 SUBJECT: GRB050128,optical observations DATE: 05/01/28 21:57:57 GMT FROM: Shouta Maeno at U.of Miyazaki S.Maeno,E.Sonoda,Y.Matsuo,M.Yamauchi (University of Miyazaki) "We have observed the field covering the error box of GRB 050128 (GCN 2992;Swift-BAT Trigger time is 04:19:54 UT) with the unfiltered CCD camera on the 30-cm telescope at University of Miyazaki. The observation was started 19:23:52 UT on Jan.28. Observed field of view is 43 arcmin centerd on R.A.=14h 38m 11s Dec= -34d 42' 34" After co-adding a set of 3 images of 30 sec exposures, we have compared with the USNO A2.0 catalog. Preliminary analysis shows there is no new source brighter than 17.5 mag.