{
  "bibcode": "2008GCN..7834....1C",
  "body": "C. Clemens, T. Kruehler, J. Greiner, A. Kupcu Yoldas, A. Yoldas (all MPE \nGarching) and G. Szokoly (Eoetvoes Univ., Budapest and MPE Garching) report \non behalf of the GROND team:\n\nWe observed the field of GRB 080605 (Swift trigger 313299; Sbarufatti et al., \nGCN #7828) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, \nPASP 120, 405) mounted at the 2.2m ESO/MPI telescope at La Silla Observatory \n(Chile).\n\nObservations started at 01:10:59 UT on June 6th, 2008, 83 mins after the GRB \ntrigger, and are continuing.\n\nWe found a single and relatively bright point source within the 1.0'' \nSwift-UVOT error circle reported by Holland et al. (GCN #7830) at\n\nRA (J2000.0) = 17h 28m 30.05s\nDEC (J2000.0) = +04d 00' 56.2\"\n\nwith a typical uncertainty of 0.8\", which is consistent with the sources \nreported by Kann et al. (GCN #7829) and Gomboc et al. (GCN #7831).\n\nBased on 460 s and 1500 s of effective exposures taken 1.65 hrs and 2.78 hrs \nafter the trigger, we estimate preliminary magnitudes of\n\nr' = 20.3 and i' = 19.4, as well as\nr' = 20.7 and i' = 19.9\n\nwith typical errors of +/- 0.1. (Given magnitudes are calibrated against \nUSNO-B1 field stars and might be affected by the bright, nearby star.)\n\nThis indicates a clear fading of the source, which we therefore suggest to be \nthe optical afterglow of GRB 080605.",
  "circularId": 7834,
  "createdOn": 1212726638000,
  "email": "cclemens@mpe.mpg.de",
  "subject": "GRB 080605: GROND detection of the optical afterglow candidate",
  "submitter": "Christian Clemens at MPE  <cclemens@mpe.mpg.de>",
  "eventId": "GRB 080605"
}