TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3895 SUBJECT: GRB050827: RTT150 optical observations DATE: 05/08/28 02:47:40 GMT FROM: Irek Khamitov at TUG Z. Aslan, I. Khamitov (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.), I. Bikmaev, A. Galeev, N. Sakhibullin (KSU/AST), R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), report: We have observed the error box of Swift-BAT GRB 050827 (trigger #152325) (Capalbi, et al., GCN 3893; T. Sakamoto, et al., GCN 3894) with the Russian-Turkish 1.5-m telescope (Bakirlitepe, TUBITAK National Observatory, Turkey) using TFOSC in R band. We made 2*300s exposures at UT 23:27, August 27 (midtime), and 2*300s at UT 01:39, August 28, 2005. We found no fading source brighter than ~21.4. This message may be cited.