TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4241 SUBJECT: GRB 051109b: GETS observation DATE: 05/11/10 08:38:00 GMT FROM: Kenzo Kinugasa at Gunma Astro. Obs/Japan K. Kinugasa (Gunma Astronomical Observatory) and K. Torii (Osaka U.) report: The error region of GRB 051109b (Tagliaferri, et al. GCN 4222) was imaged by the robotic 0.25m GETS telescope in the Gunma Astronomical Observatory. Unfiltered imaging started at 08:52:45 UT (13.1 minutes after the trigger) and 30 s integration was repeated. We do not identify a new object within the BAT error region (Hullinger, et al. GCN 4222) and the following 3-sigma upper limits are derived relative to USNO-A1.0 R mag. ------------------------------------------ StartUT Limit Nframes ------------------------------------------ 08:52:45 >18.7 20 09:06:33 >18.7 20 09:35:32 >18.4 30 ------------------------------------------