TITLE: GCN CIRCULAR NUMBER: 17232 SUBJECT: GRB 141225A: Optical aftergow confirmation DATE: 14/12/26 00:05:51 GMT FROM: Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst D. Malesani (DARK/NBI), T. Augusteijn (NOT), and P. Jakobsson (Univ. Iceland) report on behalf of a larger collaboration: We observed the field of GRB 141225A (D'Avanzo et al., GCN 17229) with the Nordic Optical telescope equipped with the MOSCA camera. Observations started at 23:25:08 UT (0.40 hr after the GRB trigger) and were conducted in the SDSS r band. Consistent with the XRT position (see http://www.swift.ac.uk/xrt_positions/), we detect a bright source not present in the DSS, which is likely the optical afterglow of GRB 141225A. Its coordinates are (J2000): RA = 09:15:06.89 Dec = +33:47:30.8 and an approximate magnitude of R ~ 19.5 (Vega; assuming R = 16.2 for the USNO star at RA = 09:15:09.46, Dec = +33:47:48.7). This is the same source reported by Gorosabel et al. (GCN 17230) and Guidorzi et al. (GCN 17231).