{
  "bibcode": "2008GCN..8018....1M",
  "body": "F. Munz (INAF/IASF Bologna), F. Terra (Second University of Roma \"Tor\n  Vergata\"),,G. Greco, C. Bartolini, A. Guarnieri, A. Piccioni (Bologna\n   University), G. Pizzichini (INAF/IASF Bologna), D. Nanni (INAF/OAR and\n   Second University of Rome \"Tor Vergata\"), S. Galleti, R. Gualandi (Bologna\n   Observatory) report:\n\n   We observed the field of GRB 080723A (GCN 8000 Stamatikos et al.)\n   with the 152 cm telescope located in Loiano under clear sky conditions\n   (seeing~2.5\").\n\n   In our 20 min exposure in the Rc filter at mean time 2008 July 23\n   20.62 UT we do not detect any afterglow candidate in the enhanced Swift-XRT\n   position (GCN 8001, Beardmore et al.).\n\n   Our 3-sigma limiting magnitude is R~20 (based on Nomad1 catalogue).\n   In this area there is a strong galactic extinction, A_lambda ~ 4 mag in R\n   from the NASA/IPAC extragalactic data base.\n   The image has been posted in our public directory\n   from where it can be retrieved by sftp using\n\n   hostname: ermione.bo.astro.it\n   username: publicGRB\n   password: GRB_bo\n   directory: GRB080723A",
  "circularId": 8018,
  "createdOn": 1216995570000,
  "email": "pizzichini@iasfbo.inaf.it",
  "subject": "GRB 080723A: optical upper limit",
  "submitter": "Graziella Pizzichini at IASF/CNR,Bologna  <pizzichini@iasfbo.inaf.it>",
  "eventId": "GRB 080723A"
}