{
  "bibcode": "2002GCN..1467....1G",
  "body": "J. Gorosabel (IAA-CSIC), J.M. Castro Cer�n (ROA),\n A.J. Castro Tirado (IAA-CSIC), A. Guijarro (CAHA),\n F. Hoyo (CAHA), S. Pedraz (CAHA) and C. Wolf (Oxford Univ.),\n report:\n\n We have performed Ic-band observations of the central part\n (coverage 40%) of the GRB 020715 (GCN 1456) error box with\n the 2.2m Telescope of Calar Alto (+BUSCA) as follows:\n\n ========================================================\n Date             Seeing  Exp.Time   Lim.Mag.  Time Since\n (2002 UT)         (\")      (s)     (3 sigma)  GRB (days)\n --------------------------------------------------------\n 17.945-18.007/07  1.2     5x900      24.4        2.2      \n 18.872-18.947/07  1.0     6x900      24.7        3.1      \n 05.864-05.931/08  1.5     6x900      24.3       21.1      \n --------------------------------------------------------\n\n Marginal variability (< 0.2 mag) is detected for 3 sources.\n None of these objects shows flux variability consistent with\n a monotonic decay, as expected for an optical afterglow \n 2.2-21.1 days after the gamma ray event.",
  "circularId": 1467,
  "createdOn": 1029153728000,
  "email": "jgu@laeff.esa.es",
  "subject": "GRB 020715, optical observations",
  "submitter": "Javier Gorosabel at LAEFF-INTA, Madrid  <jgu@laeff.esa.es>",
  "eventId": "GRB 020715"
}