TITLE: GCN CIRCULAR NUMBER: 19691 SUBJECT: GRB 160712A: Skynet R-COP observations DATE: 16/07/13 02:31:08 GMT FROM: Adam S. Trotter at UNC-Chapel Hill/PROMPT/Skynet A. Trotter, J. Haislip, D. Reichart, A. Verveer, T. Spuck, J. Moore, N. Frank, M. Maples, D. Dutton, R. Gao, R. Joyner, J. Martin, M. Paggen, J. A. Crain, K. Ivarsen, A. LaCluyze, M. Nysewander, B. Barlow, J. LaCluyze, L. Lanier, D. Moffett, B. Tobias, G. Bennett, J. Da Rocha, M. Dryzer, D. Dutton, J. Elliott, C. Ferguson, R. J. Hegedus, E. Lutz, B. McCormack, T. Melo, K. Otto, R. Pierce, S. Simon, E. Smith, J. Taylor, M. Tierney, D. Varvir, and A. Vasquez Soto report: Skynet observed the Swift BAT/XRT localization of GRB 160712A (Hagen et al., GCN 19684, Swift trigger=704155) with the 14" R-COP telescope at Perth Observatory, Australia. Starting at 2016-07-12 19:58 UT and continuing until 20:30 UT (t=4.3m-31.4m post-trigger), Skynet took a total of 17 20-160s exposures in the B, V, R, and I bands. We stacked subsets of these images to maximize the S/N ratio, and detected no optical source in any band at the XRT position. Our 3-sigma limiting magnitudes are: ==================== tmid fil limit ==================== 23m B >16.7 26m V >17.2 23m R >17.7 29m I >16.9 ==================== Limiting magnitudes are in the Vega System, calibrated to 5 APASS stars in the field. Magnitudes have not been corrected for line-of-sight Milky Way dust extinction, with expected E(B-V)=0.07 (Schlafly & Finkbeiner 2011). No further Skynet observations are scheduled.