{
  "bibcode": "2005GCN..3214....1T",
  "body": "T. Tamagawa, Y. Urata (RIKEN), F. Usui (ISAS/JAXA), K. Onda, K. Abe,\nM. Tashiro (Saitama-U) on bealf of the WIDGET collaboration \n\nreport: \n\n\"The very widefield camera, WIDGET, located at Akeno, Japan, observed\nthe region of HETE-2 error box for GRB 050408 (GCN 3189, Sakamoto et\nal.). We continuously monitored the HETE-2 field-of-view with repeat\nof unfiltered 5 sec exposures from 5 hours before the burst time to 4\nhours after it. We have not found any optical emission at the\nafterglow position reported by Postigo et al. (GCN 3192) during our\nobservation period. Coadding the ten images around the burst time\nyields the 1-sigma limiting magnitude of R~11 listed below, which was\ncalibrated relative to USNO B1.0 catalogue. \n\n    t-t0 (sec)\n   start    end      limit mag.\n -------------------------------------\n  -293.93 -198.93       10.9\n  -193.93  -98.93       10.9\n   -93.93    1.07       10.9\n     6.07  101.07       11.0\n   106.07  201.07       10.9\n ------------------------------------- \n\nFurther analysis is in progress. This message may be cited. \n\nhttp://cosmic.riken.jp/grb/widget/\"",
  "circularId": 3214,
  "createdOn": 1113129481000,
  "email": "tamagawa@riken.jp",
  "subject": "GRB 050408: WIDGET simultaneous optical observations",
  "submitter": "Toru Tamagawa at RIKEN  <tamagawa@riken.jp>",
  "eventId": "GRB 050408"
}