{
  "bibcode": "2017GCN.22279....1K",
  "body": "Y. Kitaoka, T. Sakamoto (AGU)\n\nWe observed the field of GRB 171222A detected by Swift (Racusin et al.\nGCN circ. 22265) with the 0.3 m AROMA-N telescope located at\nAoyama Gakuin University (Sagamihara, Japan).  Due to the introduction\nissue of the telescope, we only obtained one 120 sec image which contains\nthe location of the GRB.  The image was taken in the R filter starting from\nDecember 12 on 18:53:26 (UT) about 140 minutes after the trigger and stopped\non 18:55:26 (UT).  We do not detect the optical afterglow in this image at\nthe location of the X-ray afterglow (Osborne et al. GCN circ. 22266).\nThe estimated five sigma upper limit is ~15.3 using the USNO-B1 catalog.",
  "circularId": 22279,
  "createdOn": 1514109682000,
  "email": "tsakamoto@phys.aoyama.ac.jp",
  "subject": "GRB 171222A: AROMA-N optical observation",
  "submitter": "Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>",
  "eventId": "GRB 171222A"
}