{
  "bibcode": "2007GCN..7052....1K",
  "body": "Klotz, A. (CESR-OMP), Boer M. (OHP), Atteia J.L. (LATT-OMP) report:\n\nWe imaged the field of GRB 071109 detected by INTEGRAL\n(trigger 4761) with the TAROT robotic telescope (D=25cm)\nlocated at the Calern observatory, France.\n\nThe observations started 36s after the GRB trigger\n(8s after the notice). The elevation of the field decreased from\nfrom 12 degrees above horizon and weather conditions\nwere good.\n\nWe analyzed carefully the following zones:\n\nMereghetti et al. 2007 (GCNC 7046):\nCenter 19h19m39.12m +02�02'52.8\" radius=2.5 arcmin\n\nChandra & Frail 2007 (GCNC 7049):\nCenter 19h19m51.67m +02�01'49.9\" radius=15 arcsec\n\nPerri, Stratta et al. 2007 (GCNC 7050):\nCenter 19h19m53.9m +02�02'47.5\" radius=9 arcsec\n\nThe first TAROT image is trailed with a duration of 60.0s\n(see the description in Klotz et al., 2006, A&A 451, L39).\nWe do not detect any OT with a limiting magnitude of:\nt0+36s to t0+96s : R > 15.4\n\nThe second image is 30.0s exposure in tracking mode:\nt0+103s to t0+133s : R > 15.5\n\nMagnitudes were estimated with the nearby USNO-B1 stars\nand are not corrected for galactic dust extinction.\n\nN.B. Galactic coordinates are lon= 37.9724 lat= -5.3391\nand the galactic extinction in R band is about 1.8 magnitudes\nestimated from D. Schlegel et al. 1998ApJ...500..525S.\n\nThis message may be cited.",
  "circularId": 7052,
  "createdOn": 1194710820000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 071109: TAROT Calern observatory optical observations",
  "submitter": "Alain Klotz at CESR-CNRS  <Alain.Klotz@free.fr>",
  "eventId": "GRB 071109"
}