{
  "bibcode": "2014GCN.17243....1K",
  "body": "Klotz A. (IRAP-CNRS-OMP), Gendre B. (IRAP-CNRS-OMP),\nBoer M., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA),\nAtteia J.L. (IRAP-CNRS-OMP) report:\n\nWe imaged the field of GRB 141225A detected by SWIFT\n(trigger 513505) with the TAROT robotic telescope (D=25cm)\nlocated at the Calern observatory, France.\n\nThe observations started 8.2 min after the GRB trigger.\nThe elevation of the field increased from\n50 degrees above horizon and weather conditions\nwere good.\n\nWe co-added a series of exposures to measure the optical\nafterglow discovered by Gorosabel et al. (GCNC 17230):\n\nTstart Tend\n(sec)  (sec) Rmag +/-\n  496    907  18.8 0.3\n  918   1315  19.0 0.3\n1327   1728  19.9 0.5\n\nThe afterglow is no longer detected in the next images.\n\nMagnitudes were estimated using USNO-B1 star USNO-B1 1237-0186662\n(R.A.=138.789, Dec=+33.797) as Sonbas et al. (GCNC 17240).\nMagnitudes are not corrected for galactic dust extinction.",
  "circularId": 17243,
  "createdOn": 1419641135000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 141225A: TAROT Calern observatory optical observations",
  "submitter": "Alain Klotz at IRAP-CNRS-OMP  <Alain.Klotz@free.fr>",
  "eventId": "GRB 141225A"
}