{
  "bibcode": "2022GCN.31753....1K",
  "body": "A. Klotz (CNRS-OMP-IRAP),\nM. Fortune, R. Augerai (Universite de la Renuion),\nP. Thierry�� (AGORA),\nL. Eymar, S. Antier, M. Boer, A. de Ugarte Postigo (CNRS-OCA-ARTEMIS),\n\nWe analyzed archive images of the SWIFT trigger 1034325 (GRB 210222B,\nBAT detection by Gropp et al. GCN Circ. 29545,\nearly optical ground observations by Fernandez-Garcia et al. GCN Circ. \n29546,\nredshift by Agui Fernandez et al. GCN Circ. 29552)\nwith the TAROT robotic telescope (D=18cm) located\nat Les Makes Observatory, Reunion Island, France.\n\nImages were acquired without any filter, camera FLI PL16803\nand Takahashi Epsilon 180ED.\n\nAccording the reference star NOMAD-1 0750-0237314 R=15.43\nwe give the photometry of the GRB optical transient:\n\nt1(s) t2(s)�������� R�� dmag\n �� 342���� 433 15.76�� 0.06\n �� 439���� 529 16.08�� 0.07\n �� 536���� 626 16.14�� 0.08\n �� 658���� 748 16.28�� 0.09\n �� 755���� 845 16.38�� 0.09\n �� 853���� 942 16.38�� 0.09\n ��1526�� 1706 16.98�� 0.12\n ��1714�� 1894 17.28�� 0.15\n ��1902�� 2543 17.32�� 0.13\n ��2550�� 3317 17.74�� 0.21\n ��3347�� 4843 17.92�� 0.25\n ��4852�� 6755 18.52�� 0.47\n\nt1 and t2 are start and stop acquisition since the trigger.\n\nMagnitudes are not corrected for Galactic dust extinction.",
  "circularId": 31753,
  "createdOn": 1647209471000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 210222B: TAROT Reunion observatory optical light curve",
  "submitter": "Alain Klotz at IRAP-CNRS-OMP  <Alain.Klotz@free.fr>",
  "eventId": "GRB 210222B"
}