TITLE: GCN CIRCULAR NUMBER: 17230 SUBJECT: GRB 141225A: 1.23m CAHA optical observations DATE: 14/12/25 23:52:18 GMT FROM: Javier Gorosabel at IAA-CSIC J. Gorosabel (IAA-CSIC/UPV-EHU), S. Hellmich (DLR), A. de Ugarte Postigo (IAA-CSIC), S. Mottola (DLR), C. Thoene (IAA-CSIC), report on behalf of a larger collaboration: "We observed the field of GRB 141225A (D'Avanzo et al. GCN 17229) with the 1.23m CAHA telescope in the I-band starting at 23:07:27.7 UT (starting ~6.5 min post burst). We detected an optical source located at RA(J2000)=09:15:06.93, DEC(J2000)=33:47:30.8 (+/-1") with a very estimative magnitude of I~18.5 (Vega) consistent with the XRT position."