TITLE: GCN CIRCULAR NUMBER: 4696 SUBJECT: GRB 060206 : Lulin optical observations DATE: 06/02/06 18:43:53 GMT FROM: Yuji Urata at RIKEN C.S. Lin, H.C. Lin, C.W. Chen, K.Y Huang W.H. Ip (NCU) Y. Urata (RIKEN), Y. Qiu (NAOC) on behalf of EAFON report: "We are observing GRB 060206 optical afterglow using 0.4-m and 1.0-m telescope at Lulin observatory, Taiwan. The imaging observation with B, V, R and I band were started at 15:49:15 UT (11.04 hours after the burst). The optical afterglow is detected in all bands. The stacked B-band image made from three 300 s exposures is available at http://cosmic.riken.go.jp/grb/eafon/GRB060206_Lulin-B.jpg MID Time(UT) Filter Exp. mag Telescope ----------------------------------------- 15.86 R 300s 18.8 LOT Further observations and analysis are in progress"