TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2861 SUBJECT: GRB 041218; optical candidate DATE: 04/12/18 21:37:13 GMT FROM: Javier Gorosabel at LAEFF-INTA, Madrid J. Gorosabel, A. de Ugarte, A.J. Castro-Tirado, M.Jelinek (IAA-CSIC), S. Pedraz (CAHA), report "We have acquired multicolour optical observations with the 2.2m CAHA telescope (+BUSCA) starting at ~18:00 UT at the position of GRB 041218 (GCN 2858). Visual comparison reveals an object that shows a clear decay. The position is: RA(J2000)=01:39:07.7 DEC(J2009)=+71:20:28.8 Further observations are in progress. This message can be cited.