{
  "bibcode": "2009GCN..9079....1K",
  "body": "K.Kono, K.Noda, E.Sonoda, N.Ohmori, H.hayasi, \nA.Daikyuji, Y.Nisioka, M.Yamauchi\n(University of Miyazaki)\n\n We have observed the field covering the error circle of\nGRB090401B (Swift trigger 348152, GCN 9066, Schady et al.) \nwith the unfiltered CCD camera on the 30-cm telescope \nat University of Miyazaki.\nThe observation was started 10:47:10 UT, about 1.8 hr\nafter the Swift trigger time.\nWe have compared our data of 30 sec exposures\nwith the USNO-A2.0 catalog,\nThere is no new source at the reported position.\n(GCN 9068, Stamatikos et al. GCN 9070, Osborne et al. )\n\nthe upper limits are as follows:\n--------------------------------------------------------------\nStart(UT)   End(UT)    Num. of frames    Limit (mag.)\n--------------------------------------------------------------\n11:41:47    11:42:17          1            16.8\n11:41:47    12:32:21         43            17.7\n---------------------------------------------------------------",
  "circularId": 9079,
  "createdOn": 1238649424000,
  "email": "kenta0514@astro.miyazaki-u.ac.jp",
  "subject": "GRB090401B, RIMOTS optical upper limits",
  "submitter": "Kenta Kono at Miyazaki U  <kenta0514@astro.miyazaki-u.ac.jp>",
  "eventId": "GRB 090401B"
}