{
  "bibcode": "2009GCN..8826....1O",
  "body": "F. Olivares (MPE Garching), A. Rossi (Tautenburg Obs.), A. Kupcu Yoldas (ESO), J. Greiner, and A. Yoldas (both MPE Garching) report on behalf\nof the GROND team:\n\nWe observed the field of the possible GRB 090118 (Swift BATSS trigger, Copete et al. GCN\n#8825) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405)\nmounted at the 2.2m MPI/ESO telescope at La Silla (Chile).\nObservations started at 00:55 UT, about 11 hrs after the GRB.\n\nComparison to the Digital Sky Survey reveals no new sources within the Swift/BAT error circle\n(Copete et al. GCN #8825). Co-added images of the first 8 minutes yield the following 5-sigma limits (in AB magnitudes):\n\nr' > 23.2\ni' > 22.5\n\nThe magnitudes are calibrated against SDSS.",
  "circularId": 8826,
  "createdOn": 1232331794000,
  "email": "rossi@tls-tautenburg.de",
  "subject": "GRB 090118: GROND Upper Limits",
  "submitter": "Andrea Rossi at TLS Tautenburg  <rossi@tls-tautenburg.de>",
  "eventId": "GRB 090118"
}