{
  "bibcode": "2007GCN..6513....1K",
  "body": "Klotz, A. (CESR-OMP), Boer M. (OHP), Atteia J.L. (LATT-OMP),\nGendre, B. (IASFC-INAF) report:\n\nWe imaged the field of GRB 070610 detected by SWIFT\n(trigger 281993) with the TAROT robotic telescope (D=25cm)\nlocated at the Calern observatory, France.\n\nThe observations started 36.1s after the GRB trigger\n(7.5s after the notice). The elevation of the field increased from\nfrom 24 degrees above horizon and weather conditions\nwere good.\n\nThe date of trigger : t0 = 2007-06-10T20:52:26.400\n\nThe first 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 in the XRT location (Pagani et al.\nGCNC 6506) with a limiting magnitude of:\nt0+36.1s to t0+96.1s : R > 15.8\n\nThe second image is 30.0s exposure in tracking mode:\nt0+102.7s to t0+132.7s : R > 16.7\n\nWe co-added a series of exposures:\nt0+102.7s to t0+387.1s : R > 18.1\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= 63.2980 lat= -1.0201\nand the galactic extinction in R band is 2.5 magnitudes\nestimated from D. Schlegel et al. 1998ApJ...500..525S.\n\nThis message may be cited.",
  "circularId": 6513,
  "createdOn": 1181634422000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 070610: TAROT Calern observatory optical observations",
  "submitter": "Alain Klotz at CESR-CNRS  <Alain.Klotz@free.fr>",
  "eventId": "GRB 070610"
}