TITLE: GCN CIRCULAR NUMBER: 19311 SUBJECT: GRB 160410A: SMARTS optical/IR observations DATE: 16/04/13 02:55:57 GMT FROM: Bethany Cobb at GWU 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 160410A (GCN 19271, Gibson et al.) with a mid-exposure time of 20.7 hours post-burst (2016-04-11 01:49 UT). Total summed exposure times amounted to 36 minutes in I and 30 minutes in J. No source is detected at the position of the optical afterglow (e.g. GCN 19271, Gibson et al.; GCN 19272, Yates et al.) to approximate limiting magnitudes of I > 20.3 and J > 17.5. Magnitudes are calibrated using USNO-B1.0 stars in I, and 2MASS stars in J.