TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2654 SUBJECT: GRB040823,optical observation DATE: 04/08/24 12:07:27 GMT FROM: Eri Sonoda at U of Miyazaki/Japan S.Maeno, E.Sonoda, M.Yamauchi (University of Miyazaki) "We have observed the field covering the error box of GRB040823 (INTEGRAL trigger 1958; trigger time 10:15:51 UT) with the unfiltered CCD camera on the 30-cm telescope at University of Miyazaki.The observation was started 11:31:37 UT on Aug.23. Observed field of view is 43 arcmin centerd on (18h 08m 36s -20d 42' 59"). After co-adding a set of 2 images of 30 sec exposures , we have compared with the USNO A2.0 catalog . Preliminary analysis shows there is no new source brighter than 16.9 mag. in the GRB error box reported by INTEGRAL. "