TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4189 SUBJECT: GRB 051105: Optical limit DATE: 05/11/05 10:14:49 GMT FROM: Ken ichi Torii at RIKEN K. Torii (Osaka U.) reports on behalf of the ART collaboration: The error region of the short GRB 051105 (Mineo et al. GCN 4188) was observed by the 14 inch Automated Response Telescope. The first frame was acquired starting at 2005 November 5, 09:11 UT (2.8 hours after the burst) and 60 s integration in Ic band was repeated. We do not identify an afterglow candidate within the BAT error circle (GCN 4188) and derive the following 3 sigma upper limit relative to USNO-B1.0 magnitude. ------------------------------------------ StartUT Filter Limit Nframes ------------------------------------------ 09:12:30 Ic >18.1 19 ------------------------------------------