{
  "bibcode": "2002GCN..1351....1D",
  "body": "D. Durig and A. McDermott (Cordell-Lorenz)\nand B. Gary (Santa Barbara) report on behalf of the\nInternational AAVSO GRB Network:\n\nWe observed the RXTE/ASM revised error box for the\npossible GRB 020406 (Smith et al. GCN 1332, 1341)\nwith the Cordell-Lorenz Observatory 30cm telescope\n(ST-9E/AO-7 CCD) and Gary 25cm telescope (ST-8E).\n\ncoverage       lim mag     UTD\n entire box     CR=17    020407.356\n western half   CR=20    020407.356\n central 80%    Rc=17.5  020407.500\n remaining 20%  Rc=17.1  020407.500\n entire box     CR=20    020410\n\nWhere CR = unfiltered, using R-band zeropoint, and Rc = taken\nwith a standard Cousins R filter.  No new objects were\nfound in the revised error box to the limiting magnitudes\nlisted above.\n\nIn addition, the entire original box was covered to CR=17\non 020407.4 with no new source detected.  The candidate\nmentioned in Durig and McDermott (GCN 1338) was\nreobserved on 020410 and has shown no fading over\nthe past 72 hours; it can be eliminated as a possible\nafterglow candidate.",
  "circularId": 1351,
  "createdOn": 1018474853000,
  "email": "aah@nofs.navy.mil",
  "subject": "GRB020406(?), optical observations",
  "submitter": "Arne A. Henden at USNO/USRA  <aah@nofs.navy.mil>",
  "eventId": "GRB 020406"
}