{
  "bibcode": "2002GCN..1501....1K",
  "body": "T. Kawabata (BAO), Y. Urata (Titech / RIKEN), H. Yamaoka (Kyushu U)\nreport:\n\nWe have obtained 36 R band images (each exposure time 60 seconds) of the\nafterglow of GRB020813 (Fox, Blake & Price, GCN #1470) with the Bisei\nAstronomical Observatory (BAO) 1.01-m telescope during 2002 Aug. 13\n11:44 to 12:40 UT. A combined image of all exposures gives R = 19.35 +/-\n0.13 using r magnitudes of near USNO_A2.0 stars as photometric\nreferences.\n\nA combined image can be found at\nhttp://www.town.bisei.okayama.jp/bao/astro/grb/grb020813.jpg\n\nThis message may be cited.",
  "circularId": 1501,
  "createdOn": 1029563371000,
  "email": "urata@crab.riken.go.jp",
  "subject": "GRB020813: optical observations at Bisei",
  "submitter": "Yuji Urata at RIKEN  <urata@crab.riken.go.jp>",
  "eventId": "GRB 020813"
}