{
  "bibcode": "2010GCN.10999....1K",
  "body": "S. Kobara, K. Omori, T. Sumi, D. Suzuki, H.Naito and T. Sako (STE Lab. , Nagoya Univ.)\non behalf of the MOA Collaboration report :\n\nWe searched for an optical afterglow of GRB100727A (GCN 10998, D. C. Morris et al.)\nstarting from 07:12:3 UT on 2010 July 27 ( 90 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 10998, D. C. Morris et al.\n).\nA 3 sigma upper limit is set in the I magnitude at 21.6 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": 10999,
  "createdOn": 1280224381000,
  "email": "kobara@stelab.nagoya-u.ac.jp",
  "subject": "GRB100727A: MOA optical upper limit",
  "submitter": "Shuhei Kobara at U.Nagoya/MOA-II  <kobara@stelab.nagoya-u.ac.jp>",
  "eventId": "GRB 100727A"
}