TITLE: GCN CIRCULAR NUMBER: 12547 SUBJECT: GRB 111103B: optical upper limit of CrAO DATE: 11/11/08 22:24:22 GMT FROM: Alexei Pozanenko at IKI, Moscow V. Rumyantsev, N. Pit (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed field of the Swift GRB 111103B (Grupe et al. GCN 12519) with AZT-11 telescope of CrAO in R filter between Nov. 3 (UT) 16:12:05 - 17:00:21. We took several images of 180 exposure under unfavorable weather conditions and mean seeing (FWHW) of about 4". We do not detect any source within enhanced XRT position (Goad et al., GCN 12525). A photometry is based on the USNO B1.0 nearby stars. T0+ Filter, Exposure, OT, UpperLimit (mid, d) (s) 0.2352 R 16x180 n/d 19.4