TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5248 SUBJECT: GRB 060607: RTT150 optical observations DATE: 06/06/09 12:50:33 GMT FROM: Irek Khamitov at TUG I. Khamitov (TUG), A.T. Saygac (Ist.Uni), Z. Aslan (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.) R. Burenin, M. Pavlinsky (IKI) I. Bikmaev, N. Sakhibullin (KSU/AST), report: We observed the field around the position of the optical/IR counterpart (Covino et al., GCN5234, Oates et al., GCN5243) of GRB060607 (Swift trigger 213823) with the Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey), at the beginning of June 08, about 19.77 hours after the burst. A series of frames was taken in R band with TFOSC. The afterglow is not detected on combined image with 1500s total exposure. http://www.tug.tubitak.gov.tr/~irekk/grb/grb060607/GRB060607_0608_RTT150.JPG Using USNO-B1 star we estimate the limiting R magnitude for the combined frame as R_lim~22.6 This message may be cited.