{
  "bibcode": "2012GCN.13321....1D",
  "body": "A. De Cia (U. of Iceland), A. Sandberg (Oskar Klein Centre), J.Hjorth (DARK), N.R. Tanvir (U. of Leicester) and P. Jakobsson (U. of Iceland) report:\n\nWe observed the field of GRB 120521C (Baumgartner et al., GCN 13318) with the NOT equipped with MOSCA in the Sloan r and i filters for 10 minutes, starting at 0:09 UT (47 min after the GRB trigger).\n\nNo significant source was detected at the burst position, down to r > 23.6 mag, calibrated against SDSS stars.",
  "circularId": 13321,
  "createdOn": 1337648165000,
  "email": "annalisa@raunvis.hi.is",
  "subject": "GRB 120521C - NOT optical limits",
  "submitter": "Annalisa De Cia at U of Iceland  <annalisa@raunvis.hi.is>",
  "eventId": "GRB 120521C"
}