{
  "bibcode": "2012GCN.13212....1S",
  "body": "Rhaana Starling, Klaas Wiersema (U. Leicester), Stuart Ryder (AAO), Peter Barnes (U. Florida) and Christopher Stockdale (Marquette Univ.) report:\n\nWe began observations of the field of GRB 120403B with IRIS2 on the 4m Anglo-Australian Telescope on 2012-04-04 at 08:34:00 UT, \n12 hours after the BAT trigger (D'Elia et al., GCN Circ. 13203). We performed near-infrared photometry in the Ks, H and J bands, \ntotalling 2x9 minutes in each filter. \n\nWe do not detect any source within the UVOT-enhanced XRT error circle (Goad et al., GCN Circ. 13205) down to limiting magnitudes of\nKs > 19.4 mag\nH  > 20.0 mag\nJ  > 20.9 mag.\nCalibration was carried out using 8 2MASS field stars. No correction for Galactic extinction has been applied.\n\n\nThese observations were obtained under programme AAT/11B/21.",
  "circularId": 13212,
  "createdOn": 1333551237000,
  "email": "rlcs1@star.le.ac.uk",
  "subject": "GRB 120403B: AAT nIR observations",
  "submitter": "Rhaana Starling at U of Leicester  <rlcs1@star.le.ac.uk>",
  "eventId": "GRB 120403B"
}