GCN Circular 19354
B. E. Cobb (GWU), reports: Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained optical/IR imaging of the error region of GRB 160425A (GCN 19343, Krimm et al.) at two epochs. For each epoch, total summed exposure times amounted to 15 minutes in I and V and 12 minutes in J and K. No source is detected at the position of the optical afterglow (e.g. GCN 19343, Krimm et al.; GCN 19344, Lipunov et al.; GCN 19349, Bodensteiner et al.) to the approximate limiting magnitudes listed below. The first epoch was obtained under particularly poor seeing conditions. mid-exposure mid-exposure time time post-burst limits 2016-04-26 04:53 UT 5.44083 hours I > 19.5 J > 16.6 K > 15.7 2016-04-26 08:29 UT 9.04250 hours I > 19.9 J > 17.9 K > 17.1 Magnitudes are calibrated using USNO-B1.0 stars in I, and 2MASS stars in J and K.