{
  "bibcode": "2006GCN..5510....1D",
  "body": "A. de Ugarte Postigo (IAA-CSIC Granada), J.French (UCD Dublin) and\nP.Kubanek (AsU AV CR Ondrejov & ISDC Versoix) reports on behalf of the\nWatcher collaboration:\n\nThe 0.4m Watcher telescope, located at Boyden Observatory, South Africa,\nobserved the SWIFT error box for GRB 060904B (Grupe et al. GCN 5505)\nstarting at 02:32:05 UT observing in R, V, I bands + unfiltered. We\ndetect the optical counterpart at coordinates reported by Rykoff et al.\n(GCN 5504), with peak brightness unfiltered 17.1+/-0.3 at 02:39:30 UT,\nconsistent with Tarot peak detection (Klotz et al. GCN 5508).\n\nThis message is quotable.",
  "circularId": 5510,
  "createdOn": 1157346341000,
  "email": "petr@lascaux.asu.cas.cz",
  "subject": "GRB060904B: Watcher observations",
  "submitter": "Petr Kubanek at AIO  <petr@lascaux.asu.cas.cz>",
  "eventId": "GRB 060904B"
}