{
  "bibcode": "2016GCN.20254....1K",
  "body": "Klotz A., Turpin D., Atteia J.L. (CNRS-OMP-IRAP),\nBoer, M., Laugier, R. (CNRS-ARTEMIS),\nGendre B. (UVI - Etelman Obs.) report:\n\nWe imaged the field of GRB 161214A detected by INTEGRAL\n(trigger 7644) with the TAROT robotic telescope (D=25cm)\nlocated at the Calern observatory, France.\n\nThe observations started 24.6s after the GRB trigger\n(17.7s after the notice). The elevation of the field increased from\n45 degrees above horizon and weather conditions\nwere good until the end of the night.\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).\n\nWe detected the couterpart mentioned by Guidorzi\net al. (GCNC 20252). The optical afterglow reached flux peak\nat t0+240s (+/- 15s). The early light curve:\n\nt0 +  25 s to t0 +   85s  : Rlim = 16.6 (trailed image)\nt0 +  99 s to t0 +  211s  : Rlim = 17.1\nt0 + 222 s to t0 +  293s  : R    = 16.9 +/- 0.3\nt0 + 304 s to t0 +  899s  : R    = 17.4 +/- 0.3\nt0 + 910 s to t0 + 2180s  : R    = 18.7 +/- 0.4\n\nMagnitudes were estimated with the nearby star\nNOMAD-1 0968-0244492 ra=190.7246097 dec=+06.8741839\nR=15.04.\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=296.86 lat=+69.60\nand the galactic extinction in R band is about 0.1 magnitudes\nestimated from D. Schlegel et al. 1998ApJ...500..525S.",
  "circularId": 20254,
  "createdOn": 1481717849000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 161214A: TAROT Calern observatory optical observations",
  "submitter": "Alain Klotz at IRAP-CNRS-OMP  <Alain.Klotz@free.fr>",
  "eventId": "GRB 161214A"
}