TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2446 SUBJECT: GRB 031111, optical observations DATE: 03/11/13 17:13:11 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia S. Fernández-Acosta (IAC, Tenerife), S. Guziy, V. Casanova, A. de Ugarte, J. Gorosabel and A. J. Castro-Tirado (IAA-CSIC, Granada), report: "We have obtained a mosaic of images (3 fields) covering the entire IPN error box for GRB 031111 (Hurley et al. GCN 2443) with the 0.8-m IAC80 telescope at Observatorio del Teide starting on Nov 13.07 UT (31.7-h after the GRB). None of the co-added images (4 x 600-s exposure time for each field) reveals any new (or strongly variable source) when comparing with the Digital Sky Survey (II epoch)".