{
  "bibcode": "2022GCN.32360....1T",
  "body": "D. Turpin (CEA), C. Adami (LAM), B. Schneider,\nE. Le Floc�h (CEA), S. Basa (LAM) report on behalf of\na larger collaboration:\n\nWe observed the field of GRB 220708B (Tohuvavohu et al. GCN 32345,\nKobayashi et al. GCN 32356, Frederiks et al. GCN 32358) using the T193cm\ntelescope at Observatoire de Haute-Provence (France) equipped with the \nMISTRAL spectro-imager. Six exposures (6x600s) were obtained in the r band\nusing the bleu MISTRAL set-up from 2022 08 Jul 20:55:39 UT to 2022 08 Jul\n22:14:27 UT (mid time ~19.5h after trigger). In the combined frame, we do not\ndetect any source within the 4 arcsec error circle of the XRT position \n(Osborne et al. GCN 32350) down to the following 3-sigma limit:\n\nr > 22.3 mag (AB)\n\nThe photometric calibration was performed using nearby stars \nfrom the PanSTARRS catalog. The magnitude is not corrected \nfor Galactic extinction and it is consistent with the non-detections \nreported by Jiang et al. (GCN 32355).\n\nWe express our deepest thanks to the Observatoire de Haute-Provence for its\nsupport, in particular to St�phane Favard and J�r�me Schmitt.",
  "circularId": 32360,
  "createdOn": 1657486474000,
  "email": "dturpin-astro@hotmail.com",
  "subject": "GRB 220708B: T193-OHP optical upper limit",
  "submitter": "Damien Turpin at NAOC (CAS)  <dturpin-astro@hotmail.com>",
  "eventId": "GRB 220708B"
}