TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3236 SUBJECT: GRB 050412: IR and Optical observations DATE: 05/04/12 07:05:00 GMT FROM: Stefano Covino at Brera Astronomical Observatory S. Covino, S. Piranomonte, P. D'Avanzo, F.M. Zerbi, G. Chincarini, M. Rodono', G. Tosti, L.A. Antonelli, P. Conconi, G. Cutispoto, E. Molinari, L. Nicastro, E. Palazzi, E. Meurs, P. Goldoni, on behalf of the REM/ROSS Team The REM telescope at the La Silla Observatory (ESO) is observing the field of GRB 050412. Observations began 34 sec after the alert (39 sec after the burst). Preliminary analysis of the first frames reveal no new sources in the error circle approximately down to the 2MASS limit in the H band and down to R = 18 in the optical. Observations and further analyses are going on. This message may be cited,