{
  "bibcode": "2018GCN.23107....1K",
  "body": "A.K.H. Kong (NTHU, Taiwan) reports\n\nWe observed the field of GRB 180809A (Yatabe et al. GCN 23103) with\nthe T30 0.51m telescope of iTelescope.Net in Siding Spring, Australia.\nThe observation was done with a luminance filter (400-700 nm)\nbeginning at 2018-08-09 12:51:14 UT (73 min after the trigger) for 300\nsec. At the position of the proposed X-ray afterglow (D'Elia et al.\nGCN 23106), we do not detect any optical emission with a detection\nlimit of about 20 mag by comparing with the Gaia DR2 catalogue.",
  "circularId": 23107,
  "createdOn": 1533850719000,
  "email": "akhkong@gmail.com",
  "subject": "GRB 180809A: iTelescope optical limit",
  "submitter": "Albert Kong at NTHU  <akhkong@gmail.com>",
  "eventId": "GRB 180809A"
}