{
  "bibcode": "2008GCN..7283....1K",
  "body": "A. Kuepcue Yoldas, A. Yoldas, J. Greiner (all MPE Garching),\nS. Klose (Tautenburg Obs), report for the GROND team:\n\nWe observed the field of GRB 080210 detected by Swift/BAT (Grupe et al.\n2008, GCN 7281)  simultaneously in grizJHK with GROND (Greiner et al. 2008,\nastro-ph/0801.4801), mounted at the 2.2m MPI/ESO telescope at La Silla (Chile).\nObservations started on Feb. 10, at 09:00 UT (1 hr after the GRB),\nwhen the GRB location was becoming visible at 20 degrees above horizon.\n\nWe detect the optical afterglow reported by Klotz et al. (2008, GCN 7280) \nand Grupe et al. (2008, GCN 7281) in all filters. At 9:02 UT we measure \ng'=20.97, r'=19.9, i'=19.61, z'=19.52, J=17.2, H=16.4 and K=15.6, with \nerrors of +-0.04 in the g'r'i'z' bands, and 0.13 in JHK. The g'-r' color \nis consistent with the Ly-break being below the g'-band. Thus, the\nredshift is smaller than 3.5, despite the possible expectation from the\nlong T90 duration of the GRB (and being an image trigger).\n\nThe afterglow has clearly faded since the TAROT and UVOT measurements, and\nalso continues to fade since the start of our observations.",
  "circularId": 7283,
  "createdOn": 1202637995000,
  "email": "jcg@mpe.mpg.de",
  "subject": "GRB 080210: GOND detection in all bands and redshift upper limit",
  "submitter": "Jochen Greiner at MPI  <jcg@mpe.mpg.de>",
  "eventId": "GRB 080210"
}