GCN Circular 15806
D. Kopac, A. Gomboc (U. Ljubljana), C. Guidorzi (U. Ferrara), A. Melandri (INAF-OAB), I. A. Steele, C. G. Mundell (LJMU), on behalf of a large collaboration report: The 2-m Liverpool Telescope automatically observed Swift-INTEGRAL-Fermi GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785), starting at 07:19:30 UT (~2.2 min after the burst trigger). We clearly detect the fading optical afterglow at the position reported by Oksanen et al. (GCN 15786). In our first 10 sec frame, we estimate the magnitude r' = 14.97 +- 0.02 at t_mid = 135 sec since the Swift/BAT trigger time. The magnitude is calibrated against nearby SDSS stars.