{
  "bibcode": "2010GCN.10904....1S",
  "body": "D. Suzuki, K. Omori, F. Hayashi, S. Kobara, H. Naito and T. Sako (STE Lab. , Nagoya Univ.)\non behalf of the MOA Collaboration repot :\n\nWe searched for an optical afterglow of GRB100628A (GCN 10895, S. Immler et al.)\nstarting from 08:16:43 UT on 2010 June 28 ( 3 minutes after the burst) \nwith the MOA-II 1.8m telescope at Mt.John observatory in New Zealand.\nIn a single image of a 300 sec exposure with a wideband Red filter (center \nwavelength ~ 750nm and FWHM ~ 250nm), we did not find any object\nwithin the error circle of the Swift XRT source position (GCN 10899, R.L.C. Starling et al.).\nA 3 sigma upper limit is set in the I magnitude at 22.7 mag.   \n\nThis photometry was done by using the DoPhot and calibrated against the \nUSNO-B1.0 catalog stars, and not corrected for the Galactic extinction.",
  "circularId": 10904,
  "createdOn": 1277789495000,
  "email": "dsuke@stelab.nagoya-u.ac.jp",
  "subject": "GRB100628A : MOA optical upper limit",
  "submitter": "Suzuki Daisuke at MOA-II  <dsuke@stelab.nagoya-u.ac.jp>",
  "eventId": "GRB 100628A"
}