TITLE: GCN CIRCULAR NUMBER: 11398 SUBJECT: GRB 101112A: BOOTES-2/TELMA optical afterglow candidate DATE: 10/11/12 23:13:09 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia GRB 101112A: BOOTES-2/TELMA optical afterglow candidate A. de Ugarte Postigo (DARK/NBI Copenhagen), P. Kubanek (IPL Univ. of Valencia), J. C. Tello, R. Sanchez-Ramirez, M. Jeli­nek, R. Cunniffe O. Lara-Gil, C. Thoene, S. Guziy, J. Gorosabel (IAA-CSIC Granada), R. Fernandez-Muñoz (EELM-CSIC), S. Castillo-Carrion, C. Perez del Pulgar (Univ. of Malaga), D. Perez-Ramirez (Univ. de Jaen), L. Sabau-Graziati (INTA) and A. J. Castro-Tirado (IAA-CSIC) report: "Following the detection of GRB 101112A by INTEGRAL (Gotz et al. GCNC 11396), the 0.6m TELMA robotic telescope at the BOOTES-2 station in Malaga (Southern Spain) responded 31 s after reception of the GCN alert (i.e. 109 s after the onset of the event). Within the IBIS/INTEGRAL error box, we find a source not present at the DSS-2 red at coordinates (J2000) R.A.:19:28:54.88, Dec: +39:21:11.6 (error ± 0".5). We measure R about 18 for the co-added 31 first images (3-s each, using an r' band filter, at mid exposure time 22:12 UT, i.e. 156-s after the onset of the burst). The source has gone in the images taken at later times so we propose this to be the optical afterglow to GRB 101112A. Further observations are in progress. Multiwavelength observations (including optical spectroscopy) are requested." This message can be quoted. [GCN OPS NOTE(12nov10): Per author's request, OL-G, CT, DP-R were added and a duplicate of PK was removed.]