GCN Circular 2642
B. E. Cobb and C. D. Bailyn (Yale), part of the larger SMARTS consortium, report: Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained optical/IR imaging of the error region of GRB 040812 (Gotz et al. GCN 2640) beginning ~18.4 hours post-burst (2004-08-13 00:25 UT). Optical imaging in B,V,R and I has a field of view of 6'x6' and, therefore, covers the entire GRB error circle. IR imaging in J, H, K and Y has a smaller field of view and covers a region totalling 3 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 SDSS and the IR images to 2MASS frames does not reveal any new sources to the limit of the comparison frames.