{
  "bibcode": "2007GCN..6488....1K",
  "body": "Klotz, A. (CESR-OMP), Boer M. (OHP), Atteia J.L. (LATT-OMP) report:\n\nWe imaged the field of GRB 070412 detected by SWIFT\n(trigger 275119) with the TAROT robotic telescope (D=25cm)\nlocated at the Calern observatory, France.\nAnalysis of this burst is late due to a technichal\nproblem.\n\nThe observations started 676.6s after the GRB trigger\n(4.4s after the notice). The elevation of the field decreased from\nfrom 53 degrees above horizon and weather conditions\nwere very good.\n\nThe date of trigger : t0 = 2007-04-12T01:27:03.744\n\nThe first image is 90.0s exposure in tracking mode:\nWe do not detect any OT in the XRT location\n(Romano et al. 2007 GCNC 6273)\nwith a limiting magnitude of:\nt0+676.6s to t0+766.6s : R > 18.5\n\nWe co-added a series of exposures:\nt0+676.6s to t0+1251.3s : R > 19.5\n\nMagnitudes were estimated with the nearby USNO-B1 stars\nand are not corrected for galactic dust extinction.\n\nThis message may be cited.",
  "circularId": 6488,
  "createdOn": 1181281952000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 070412: TAROT Calern observatory optical observations",
  "submitter": "Alain Klotz at CESR-CNRS  <Alain.Klotz@free.fr>",
  "eventId": "GRB 070412"
}