TITLE: GCN CIRCULAR NUMBER: 12254 SUBJECT: GRB 110807A: SAO RAS observations DATE: 11/08/08 01:05:50 GMT FROM: Vladimir Sokolov at SAO RAS A. S. Moskvitin, V. V. Sokolov and R. I. Uklein, report on behalf of the SAO RAS GRB follow-up team: We observed the field of GRB 110807A (D'Elia et al, GCN 12253) with the 6-meter BTA + Scorpio on August 7.843 -- 7.857 UT (observations were started since 16 minutes after the BAT trigger). We obtained 21 x 30 sec. exposures in Rc band. At our stacked image (seeing = 1".9), inside the XRT error circle we clearly detected only one object with the following coordinates: R. A. = 18:34:52.42 Dec. = -08:45:57.08, with approximately error 1" (all coordinates for Epoch = 2000). The brightness of the object were measured as R = 23.44 +/- 0.34 (no extinction correction were made). Calibration were done against the magnitude R2 = 17.85 of the USNO-B.1 star 0812-0420010 (R.A. = 18:34:51.24, Dec. = -08:45:40.1). We also noted presence of the other object just outside from the XRT error circle to the North-West which is marked as USNO-B.1 star 0812-0420027 (R.A. = 18:34:51.86, Dec. = -08:45:52.3). At our image this object is extended along the South-East direction and probably may be two or more objects. Zoomed image from BTA can be found at ftp://ftp.sao.ru/pub/grb/GRB110807A/GRB110807A_BTA.jpeg The message may be cited.