{
  "bibcode": "2006GCN..5333....1S",
  "body": "A. Stefanescu, G. Kanbach, S. Duscha, F. Schrey, M. Muehlegger,\nN.Prymak, H. Steinle (MPE Garching) of the OPTIMA-Burst team report from \nthe 1.3m Skinakas Observatory(University of Crete, Heraklion, Greece):\n\nWe observed the position of the refined XRT errorcircle (GCN 5331, \nCapalbi et al.) on 2006-07-17 at 18:55 UT (9:48h post burst). We do not \ndetect a counterpart candidate in our 3x600s white light exposures \nbrighter than 21mag.",
  "circularId": 5333,
  "createdOn": 1153165003000,
  "email": "astefan@mpe.mpg.de",
  "subject": "GRB 060717 optical upper limit",
  "submitter": "Alexander Stefanescu at MPE  <astefan@mpe.mpg.de>",
  "eventId": "GRB 060717"
}