TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5121 SUBJECT: GRB 060512: REM NIR observations DATE: 06/05/13 01:16:07 GMT FROM: Daniele Malesani at SISSA-ISAS,Trieste,Italy S. Covino, D. Malesani, P. D'Avanzo, E. Molinari, G. Chincarini, F.M. Zerbi, V. Testa, G. Tosti, F. Vitali, L.A. Antonelli, P. Conconi, G. Cutispoto, G. Malaspina, L. Nicastro, E. Palazzi, E. Meurs, and P. Goldoni report on behalf of the REM/ROSS team: We imaged the field of GRB 060512 (Cummings et al., GCN 5117) with the robotic 60-cm REM telescope located at La Silla (Chile). Observations were performed automatically in the near infrared (J, H, K, z bands) starting 62 s after the GCN alert (almost 14 minutes after the GRB). The first observations were performed at about airmass 6.8, under difficult conditions. Preliminary analysis of the dataset does not show any new source down to approximately H = 15.2 at the position of the optical afterglow reported by Cummings et al. (GCN 5117) and Mundell et al. (GCNs 5118, 5119). Further observations and analysis are still in progress. This message is citeable. [GCN OPS NOTE(14may06): Per author's request, Antonelli was added to the author list.]