{
  "bibcode": "2006GCN..4931....1A",
  "body": "K. Abe, K. Onda, M. Tashiro (Saitama-U), T. Tamagawa, Y. Urata\n(RIKEN), H. Azuma, M. Kuwahara (RIKEN/TUS), F. Usui (ISAS/JAXA)\non behalf of the WIDGET collaboration report: \n\n\"We have observed the error box of the Swift GRB 060323 (Vetere et\nal., GCN 4904) with a very wide-field camera, WIDGET, located at\nAkeno, Japan. WIDGET is continuously monitored the region with repeat\nof unfiltered 5 seconds exposures between 750 seconds before and 82\nseconds after the burst trigger. We have not found any optical\nemission at the Swift XRT source position (Kennea et al., GCN\n4909). The 1-sigma limiting magnitude of each frame derived by the\nTycho 2 catalog was around V=12.0 magnitude.\" \n\nThis message may be cited.",
  "circularId": 4931,
  "createdOn": 1143489009000,
  "email": "tamagawa@riken.jp",
  "subject": "GRB 060323 : WIDGET simultaneous optical observations",
  "submitter": "Toru Tamagawa at RIKEN  <tamagawa@riken.jp>",
  "eventId": "GRB 060323"
}