TITLE: GCN CIRCULAR NUMBER: 17047 SUBJECT: GRB 141109B: BOOTES-4 and TERSKOL optical upper limit DATE: 14/11/09 22:02:16 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia I.V. Sokolov, A. Moskvitin, V.V. Sokolov (SAO-RAS Zelenchukaja, Russia), S. Guziy (Nikolaev Univ. Obs., Ukraine), A.J. Castro-Tirado, J.C. Tello (IAA-CSIC Granada, Spain), Y. Fan, X. Zhao, J. Bai, Ch. Wang and Y. Xin (Yunnan National Astronomical Observatory, China) on behalf of a larger collaboration, report: Following the detection of GRB 141109B by Swift/BAT (Melandri et al., GCNC 17038), the robotic 0.6m MET telescope at the BOOTES-4 station, in Lijiang Astronomical Observatory (China) responded to the event after the sunset, with the first images being obtained about 3.5 h post-burst. Additional R-band images (6 x 300s) were taken at the 2.0m Terskol telescope in the Northern Caucasus starting 11.3 hr post-burst. No optical source is detected at the refined Swift/XRT position (Beardmore et al., GCNC 17045) down to the DSS limit. Observations at longer wavelengths are encouraged.