GCN Circular 27760
Y.-D. Hu, E. Fernandez-Garcia, A. J. Castro-Tirado (IAA-CSIC), I. Carrasco and C. Perez del Pulgar (Univ. de Malaga), M. D. Caballero-Garcia (ASU-CAS, CZ) and R. Querel (NIWA), on behalf of a larger collaboration, report: The 60cm BOOTES-3/YA robotic telescope at NIWA Lauder in Otago (New Zealand) automatically responded to the Swift trigger of GRB 200519A (Sbarufatti et al. GCNC 27756). The first image (clear filter) were obatined starting at 11:20:57 UT (~ 34 s after trigger). At the position reported by Swift/UVOT (Sbarufatti et al. GCNC 27756), we found the optical counterpart with a magnitude of 14.96+-0.12 mag in the 1s exposure image whose median time at 52s that also reported by iTelescope (Kong et al. GCNC 27757) and LCO (Strausbaugh et al. GCNC 27759), which calibrated with nearby stars in USNO-B 1.0 catalog. Further analysis is ongoing. We thank the staff at NIWA for its excellent support.