Circular 4335 was removed from the system. It was a duplicate of the 4325 circular. The duplication happened during the submission process due to a downed server at the submotor's institution. --GCN OPS //////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4335 SUBJECT: GRB 051211: IAC80 optical observations DATE: 05/12/12 09:30:56 GMT FROM: Alberto Castro-Tirado at LAEFF-INTA A. de Ugarte Postigo (IAA-CSIC Granada), S. Fernández-Acosta (IAC Tenerife), S. Guziy, M. Jelínek, S. B. Pandey, J. Gorosabel and A. J. Castro-Tirado (IAA-CSIC) report: "We have imaged a 7' x 7' region centred on the HETE-2/SXC error box for GRB 051211 (Atteia et al. GCNC 4324) with the 0.8-m IAC telescope at the Observatorio del Teide starting on Dec 11.279 UT (i.e. 3.9 hours after the GRB). Two frames (600s exposure time, R-band) were taken under poor meteo- rological conditions (strong wind and increasing background due to the proximity of the twilight). No optical variable is detected in a 3' field centred on the HETE-2/SXC error box down to limiting magnitude of R about 19." This message can be quoted.