{
  "bibcode": "2020GCN.26801....1N",
  "body": "M. Nakamura, T. Sakamoto (AGU)\n\nWe observed the field of GRB 200115A detected by Swift\n(Cenko et al., GCN Circ. 26771) with the 14-inch AGU Robotic\nOptical Monitor for Astrophysical object - Narrow (AROMA-N)\nlocated at the Sagamihara campus of Aoyama Gakuin University.\n\n60 images of 60 sec exposures were taken in the R filter\nstarting from January 15 12:14:42 (UT) about 24 minutes\nafter the trigger and stopped on January 15 13:27:55 (UT).\nWe do not detect the optical afterglow both in the individual\nimages and the stacked image.  The estimated five sigma\nupper limit of the combined image (total exposure of 3600 sec)\nis ~18.1 mag using the USNO-B1 catalog.",
  "circularId": 26801,
  "createdOn": 1579265180000,
  "email": "tsakamoto@phys.aoyama.ac.jp",
  "subject": "GRB 200115A: AROMA-N Optical Observation",
  "submitter": "Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>",
  "eventId": "GRB 200115A"
}