{
  "bibcode": "2009GCN..9782....1G",
  "body": "J. Gorosabel, V. Terron, M. Fernandez, P. Kubanek, M. Jelinek, A.J.\nCastro-Tirado (IAA-CSIC), on behalf of a larger collaboration, report;\n\nWe have  carried out  I-band observations of  the XRT position  of GRB\n090813  (GCN  9781) with  the  1.23m  telescope  of Calar  Alto.   The \nobservations started  at 04:18  UT (437 s  after the GRB  trigger). We\ndetect an object  with a rough magnitude of I~17 coincident with the XRT\nposition  no present  on the  DSS. We propose  that object  as the optical\nafterglow of GRB 090813.",
  "circularId": 9782,
  "createdOn": 1250139708000,
  "email": "jgu@iaa.es",
  "subject": "GRB 090813: optical candidate from 1.23m CAHA telescope",
  "submitter": "Javier Gorosabel at IAA-CSIC  <jgu@iaa.es>",
  "eventId": "GRB 090813"
}