{
  "bibcode": "2012GCN.13656....1K",
  "body": "Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR),\nBoer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report:\n\nWe imaged the field of GRB 120816A detected by SWIFT\n(trigger 531223) with the TAROT robotic telescope (D=25cm)\nlocated at the Calern observatory, France.\n\nThe observations started 526s after the GRB trigger\n(delay due to the beginning of the night).\nThe elevation of the field increased from\n36 degrees above horizon and weather conditions\nwere good.\n\nWe co-added a series of exposures but we do not\ndetect any OT at the XRT position (Page et al.\nGCNC 13654):\n\n From t0+526s to t0+942s, R > 16.5\n\nGalactic coordinates are lon= 26.384d lat= -2.527d\nand the galactic extinction in R band is about 3 magnitudes\n(estimated from D. Schlegel et al. 1998ApJ...500..525S).\nAlthough the field is very dense, there are no star brighter\nthan 18th mag in the XRT error box.\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": 13656,
  "createdOn": 1345151806000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 120816A: TAROT Calern observatory optical observations",
  "submitter": "Alain Klotz at CESR-CNRS  <Alain.Klotz@free.fr>",
  "eventId": "GRB 120816A"
}