{
  "bibcode": "2012GCN.13697....1S",
  "body": "P. Schady (MPE Garching), S. Klose (TLS Tautenburg) and J. Greiner (MPE\nGarching) report on behalf of the GROND team:\n\nWe observed the field of GRB 120821A (INTEGRAL trigger #6266; Mereghetti\net al., GCN #13696) simultaneously in g'r'i'z'JHK with GROND (Greiner et\nal. 2008, PASP 120, 405) mounted at the 2.2 m MPG/ESO telescope at La\nSilla Observatory (Chile).\n\nObservations started at 23:47 UT, 10.4 hours after the GRB trigger. They\nwere performed at an average seeing of 1.1\" and at an average airmass of\n1.0.\n\nThe GROND JHK observations fully covered the INTEGRAL error circle,\nwhereas the g'r'i'z observations covered ~60% of the error circle. We do\nnot detect any obvious new source brighter than the detection limits of\nDSS2 and 2MASS within the area covered by the 2arcmin INTEGRAL error\ncircle.",
  "circularId": 13697,
  "createdOn": 1345628874000,
  "email": "pschady@mpe.mpg.de",
  "subject": "GRB 120821A: GROND upper limits",
  "submitter": "Patricia Schady at MPE/Swift  <pschady@mpe.mpg.de>",
  "eventId": "GRB 120821A"
}