{
  "bibcode": "2023GCN.34762....1A",
  "submitter": "Christophe Adami at LAM <christophe.adami@lam.fr>",
  "body": "P. Amram, C. Adami, S. Basa (LAM/Pythéas), T. Adami (ENS Paris-Saclay), B. \nSchneider (MIT), A. Saccardi, S. D. Vergani, (GEPI, Obs. de Paris), S. \nAntier, A. de Ugarte Postigo (OCA), E. Le Floc'h, D. Götz, F. Schüssler, \nD. Turpin (CEA-Saclay), report, on behalf of a larger collaboration:\n\nWe observed the field of GRB 230812B (Fermi GBM Team GCN, 34386 and all \nsubsequent GCNs) using the MISTRAL spectro-imager of Observatoire de Haute \nProvence (OHP) in imaging mode. We obtained during the 2023 09 22 night 12x600s \nexposure in the r'-band with a mid-epoch of 20:30 UT.\n\nWe derive the following photometry, calibrated against the Pan-STARRS catalog, \nnot corrected for the underlying galaxy, and not corrected for Galactic dust reddening:\n\n2023 09 22 20:30 UT r' = 22.37 +/- 0.14\n\nWe acknowledge the excellent support from Yoann Degot-Longhi (Observatoire de Haute \nProvence) and we thank Isabelle Boisse.\n",
  "createdOn": 1695583719515,
  "subject": "GRB 230812B: r'-band observations from MISTRAL at Observatoire de Haute-Provence",
  "submittedHow": "web",
  "eventId": "GRB 230812B",
  "circularId": 34762
}