TITLE: GCN CIRCULAR NUMBER: 12982 SUBJECT: GRB 120224A: FTN optical observations DATE: 12/02/24 10:11:35 GMT FROM: Jure Japelj at U. of Ljubljana,Slovenia J. Japelj, D. Kopac (U. Ljubljana) and C. Guidorzi (U. Ferrara) report on behalf of a larger collaboration: The 2-m Faulkes Telescope North automatically began observing GRB 120224A (Saxton et al., GCN 12980), starting at 04:44:40 UT on 2012 February 24. We do not detect any optical counterpart inside the enhanced Swift-XRT error circle (Osborne et al., GCN 12981) down to the following limiting magnitudes: Mid time from Exp Filter Mag limit trigger (min) (sec) ------------------------------------------- 44.5 600 R > 19.3 39.3 480 i' > 18.6 ------------------------------------------- The magnitudes are calibrated against nearby USNO-B1.0 stars.