{
  "bibcode": "2012GCN.13564....1S",
  "body": "T. Sakamoto (UMBC/GSFC), D. Donato (ORAU/GSFC), N. Gehrels (GSFC),\nT. Okajima (GSFC), Y. Urata (NCU)\n\nWe observed the field of GRB 120802A detected by Swift\n(trigger #529486; Holland et al., GCN Circ. 13555) with the 14-inch\nGoddard Robotic Telescope (GRT) located at the Goddard Geophysical\nand Astronomical Observatory (http://cddisa.gsfc.nasa.gov/ggao/).\n\n30 images of 60 sec exposures were taken in the R filter starting \nfrom August 2 08:37:05  (UT) about 36 minues after the trigger and \nstopped on August 2 09:08:49 (UT).  We do not detect the optical \nafterglow both in the individual images and the stacked image, which only \ncombined 27 good quality images, inside the enhanced XRT position \n(Evans et al., GCN #13558).  The estimated five sigma upper limit of \nthe combined image (total exposure of 1620 sec) is ~17.2 mag using \nthe USNO-B1 catalog.",
  "circularId": 13564,
  "createdOn": 1343946243000,
  "email": "takanori@milkyway.gsfc.nasa.gov",
  "subject": "GRB 120802A: GRT Optical Observation",
  "submitter": "Takanori Sakamoto at NASA/GSFC  <takanori@milkyway.gsfc.nasa.gov>",
  "eventId": "GRB 120802A"
}