TITLE: GCN CIRCULAR NUMBER: 5938 SUBJECT: GRB 061218, SMARTS optical/IR observations DATE: 06/12/18 05:35:07 GMT FROM: Bethany Cobb at Yale U B. E. Cobb (Yale), part of the larger SMARTS consortium, reports: Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained optical/IR imaging of the error region of GRB 061218 (GCN 5936, Zane et al.), with a mid-exposure time of 2006-12-18 04:44:48 UT, which is ~0.7 hours post-burst. Our optical images have a field of view of 6'x6' and, therefore, cover the entire GRB error circle. Our IR images have a smaller field of view, covering a region totaling ~6 square arcminutes in the middle of the quoted error region. Several dithered images were obtained in each filter, with total summed exposure times of 180s in each of BRIYJK and 120s in each of H and V. Preliminary visual comparison of the optical images to the DSS and the IR images to 2MASS frames does not reveal any new sources to the limit of the comparison frames.