{
  "bibcode": "2008GCN..7885....1Y",
  "body": "M. Yoshida, K. Yanagisawa, Kuroda, D., Y. Shimizu, S. Nagayama,\nToda, H. (OAO, NAOJ) and N. Kawai (Tokyo Tech) report on behalf\nof the MITSuME collaboration:\n\nWe performed optical imaging observation (g', Rc, and Ic) of the\nfield of GRB 080613A (Gotz et al. GCN 7871) with 50cm MITSuME\ntelescope at Okayama Astrophysical Observatory from 13:44:35 UT\n(4h 9m after the trigger) to UT 15:13:05 on June 13 2008.\n\nWe found no new source within a 10 arcsec radius of the position\nof the optical afterglow candidate reported by Guidorzi et al.\n(GCN 7872). Three sigma limiting magnitudes of our observation\nare listed below.\n\n\nStart-UT              mid-UT    exp-T    g'      Rc      Ic\n--------------------------------------------------------------\n2008-06-13 13:44:35   14:28:50  77min    >18.4   >17.7   >16.7\n--------------------------------------------------------------",
  "circularId": 7885,
  "createdOn": 1213745202000,
  "email": "yoshida@oao.nao.ac.jp",
  "subject": "GRB080613A: Optical upper limits with Okayama MITSuME telescope",
  "submitter": "Michitoshi Yoshida at Okayama Astrophysical Obs  <yoshida@oao.nao.ac.jp>",
  "eventId": "GRB 080613A"
}