{
  "bibcode": "2006GCN..5023....1S",
  "body": "E.Sonoda,S.Maeno,M.Yamauchi\n(University of Miyazaki)\n\n\n  We have observed the field covering the error circle of\nGRB060428B (GCN 5017) with the unfiltered CCD camera on\nthe 30-cm telescope at University of Miyazaki.\nThe observation was started 12:02:52 UT, ~3.14 hour\nafter the Swift trigger time.\n\n  We have compared our data of 30 sec exposures\nwith the USNO-A2.0 catalog, there is no new source\nat the position reported by P.A.Price et al.(GCN 5019).\n\nThe upper limits are as follows:\n--------------------------------------------------------------\nStart(UT)\tEnd(UT)\t    Num. of frames\tLimit (mag.)\t\n--------------------------------------------------------------\n12:02:52\t12:11:28\t8\t\t~12.8\n12:11:52\t12:41:28\t24\t\t~16.9\n12:42:56\t12:47:02\t4\t\t~17.9\n---------------------------------------------------------------",
  "circularId": 5023,
  "createdOn": 1146236931000,
  "email": "sonoda@astro.miyazaki-u.ac.jp",
  "subject": "GRB060428B, optical observation",
  "submitter": "Eri Sonoda at U of Miyazaki/Japan  <sonoda@astro.miyazaki-u.ac.jp>",
  "eventId": "GRB 060428B"
}