TITLE: GCN CIRCULAR NUMBER: 15469 SUBJECT: GRB 131108A: 1.23m CAHA optical candidate DATE: 13/11/09 03:59:02 GMT FROM: Javier Gorosabel at IAA-CSIC J. Gorosabel (IAA-CSIC/UPV-EHU), S. Mottola (DLR), A. de Ugarte Postigo (IAA-CSIC/DARK-NBI), S. Hellmich (DLR), G. Proffe (DLR), report on behalf of a large collaboration: We imaged the field of GRB 131108A (Racusin et al. GCNC 15464) with the 1.23m CAHA telescope. The observations were carried out in the V-band starting at 03:28:33 UT. A bright V~18.5 object not present on the DSS is detected consistent with the possible X-ray afterglow position (Stroh & Kennea, GCNC 15468). Further observations are in progress.