GCN Circular 12868
GRB 120118B : Lulin Optical limit H.Y. Hsiao, Y. Urata (NCU), K.Y. Huang (ASIAA) on behalf the EAFON cooperation: The Lulin 1-m telescope at Taiwan started optical observations on GRB 120118B at 1.8 hours after the BAT trigger (Littlejohns et al. GCN 12852). No optical counterpart was found at the Swift-XRT position (Osborne et al, GCN 12857). Our stacked images indicate 3-sigma limiting magnitudes of g'~21.9, r'~ 21.4 and i'~ 20.9. The calibrations were against two nearby sdss stars. This message can be cited.