GCN Circular 12183
T. Sakamoto (UMBC/GSFC), D. Donato (UMD/GSFC), N. Gehrels (GSFC), T. Okajima (GSFC), Y. Urata (NCU) We observed the field of GRB 110719A detected by Swift (trigger #457553; Sakamoto et al., GCN Circ. 12173) with the 14-inch Goddard Robotic Telescope (GRT) located at the Goddard Geophysical and Astronomical Observatory (http://cddisa.gsfc.nasa.gov/ggao/). A total 127 images of 5 sec exposures were taken in the R filter starting from July 19 06:11:29 (UT), about 137 seconds after the trigger (92 seconds after the BAT position notice), and stopped on July 19 06:31:01 (UT). We do not detect the optical afterglow both in the individual images and the stacked image inside the XRT error circle (Goad et al., GCN #12176). The estimated five sigma upper limit of the combined image (total exposure of 635 sec) is ~18.2 mag using the USNO-B1 catalog.