{
  "bibcode": "2014GCN.16554....1C",
  "body": "A.J. Castro-Tirado (IAA-CSIC, ISA-UMA), J. Gorosabel (IAA-CSIC, UPV-EHU),\nJ. C. Tello, R. Cunniffe, A. Gonzalez-Rodriguez, A. Sota, M. Jelinek, S.\nJeong, O. Lara-Gil, S. R. Oates, R. Sanchez-Ramirez (IAA-CSIC, Granada), P.\nKubanek (IP-ASCR, Prague) and S. Pandey (ARIES) report:\n\nFollowing the detection of GRB 140709A by Swift (Hagen et al., GCNC 16546),\nthe 0.6m TELMA robotic telescope at the BOOTES-2 astronomical station\nMalaga (Spain), responded to the GRB location starting at 01:14:41 UT (i.e.\n60s postburst, in the clear filter, 5s integrations), with an upper limit\nof R > 16.5. Further optical observations were carried out at the 1.5m OSN\ntelescope starting on July 9.06-9.12 UT (i.e. 0.37--1.72 hours post GRB). A\nsource coincident with the enhanced XRT position is found (Evans et al. GCN\n16548) at coordinates RA(J2000) = 20:18:38.95,  DEC(J2000) = 51:13:29.6\n(+/-0.5\") when the 78x60s frames are co-added.  Using USNO-B1.0 as\nreference, we measure a Vega magnitude of I = 20.8 (uncorrected for\nGalactic reddening), which is the potential optical afterglow. At the\npresent stage we do not know is the source is fading or not. We also detect\nthe object reported by RATIR (Butler et al. GCN 16547), which is not\nconsistent with the position of our candidate. Further observations are\nplanned.",
  "circularId": 16554,
  "createdOn": 1404924688000,
  "email": "jtello@iaa.es",
  "subject": "GRB 140709A: BOOTES-2 and OSN optical observations",
  "submitter": "Juan Carlos Tello at IAA-CSIC  <jtello@iaa.es>",
  "eventId": "GRB 140709A"
}