{
  "bibcode": "2012GCN.13426....1E",
  "body": "J. Elliott, J. Greiner (both MPE Garching), A. Nicuesa Guelbenzu, S. Schmidl, \nS. Klose (all TLS Tautenburg) report on behalf of the GROND team:\n \nWe observed the field of GRB 120709A (Kocevski et al., GCN #13423) with the \nWide-Field Imager (WFI; 33 arcmin field-of-view) at the 2.2 m MPG/ESO \ntelescope at La Silla Observatory (Chile). In order to cover the 0.35 deg \nradius error circle, a mosaic of 2*2 pointings was performed. The sequence \nof exposures started at 07:42 UT, 10.5 hrs after the GRB, with 10 min \nexposure per tile. The observations were performed at an average airmass \nof 1.13, mean seeing of 1 arcsec, and a Moon distance of 80 deg.\n\nWe compared our R-band images with the DSS2-R plates, but find no new object\nbrighter than R~19 mag within the 0.35 deg radius error circle.",
  "circularId": 13426,
  "createdOn": 1341949345000,
  "email": "jcg@mpe.mpg.de",
  "subject": "GRB 120709A: optical afterglow limits",
  "submitter": "Jochen Greiner at MPI  <jcg@mpe.mpg.de>",
  "eventId": "GRB 120709A"
}