{
  "bibcode": "2003GCN..1900....1I",
  "body": "H. Izumiura (OAO)\nT. Aoki, Y. Urata on behalf of the KISO GRB Team report:\n\n\"We have observed the entire error circle of GRB030227 (Gotz et\nal. GCN1895, 1896) with Kiso 1.05 Schmidt telescope starting at Feb\n27. 10:43 UT (2.1 h after the burst). Multi band images were taken\nwith 2k x 2k CCD camera (50' x 50' field of view).\n\nOur data;\nDate  Time (UT)    Exposure  Limiting mag.(R, SN=3)\n02-27 10:43-10:48  300sec    20.3  \n02-27 12:44-12:54  600sec    20.9\n\n From a comparison with the DSS-2 images we did not identify any new\npoint source for the GRB down to the limiting magnitude. Limiting\nmagnitudes were estimated by comparison with USNO-A2.0 red magnitudes\nof many field stars.  We also could not identify any variable objects\nin the region using a PSF matched image subtraction method.\n\nIn our first frame, a minor planets Busch was located in the error\ncircle.\"\n\nThis message may be cited.",
  "circularId": 1900,
  "createdOn": 1046366383000,
  "email": "urata@crab.riken.go.jp",
  "subject": "GRB030227: Kiso optical observations",
  "submitter": "Yuji Urata at RIKEN  <urata@crab.riken.go.jp>",
  "eventId": "GRB 030227"
}