{
  "bibcode": "2009GCN.10132....1N",
  "body": "K. Nishimoto, D. Suzuki, T. Sako, and F. Abe (STE Lab, Nagoya Univ.)\non behalf of the MOA Collabration report:\n\nWe searched for an optical afterglow of GRB091102 (Hoversten et al. GCN\n10117) starting from 14:57:07.8 UT on 2009 Nov 2 (22.5 minuts after the\nburst) with the MOA-II 1.8m telescope at Mt.John observatory in New Zealand.\nIn a single image of a 60sec exposure with a wideband Red filter (center\nwavelength ~ 750nm and FWHM ~ 250nm), we did not find any object within\nthe error circle of the Swift XRT source position (GCN 10120), except a\nstar reported by BOOTES-3 (De Ugarte Postigo et al. GCN 10122) and GROND\n(R. Filgas et al. GCN 10123), which has I mag=19.15 and the separation\nof 1.6 arcsec from the center of the position.\nA 5 sigma upper limit is set in the I magnitude at 20.8 mag.\n\nThis photometry was done by using the DoPhot and calibrated against the\nUSNO-B1.0 cataloged stars, and not corrected for the Galactic extinction.",
  "circularId": 10132,
  "createdOn": 1257350721000,
  "email": "nishimo@stelab.nagoya-u.ac.jp",
  "subject": "GRB091102 : MOA optical upper limit",
  "submitter": "Kenta Nishimoto at Nagoya U/MOA-II  <nishimo@stelab.nagoya-u.ac.jp>",
  "eventId": "GRB 091102"
}