{
  "subject": "GRB241212A: OHP/T193 optical observations",
  "bibcode": "2024GCN.38551....1A",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Christophe Adami at LAM <christophe.adami@lam.fr>",
  "version": 2,
  "circularId": 38551,
  "eventId": "GRB 241212A",
  "submitter": "Christophe Adami at LAM <christophe.adami@lam.fr>",
  "createdOn": 1734085973949,
  "submittedHow": "web",
  "format": "text/plain",
  "body": "C. Adami (LAM/Pytheas/AMU), J. Schmitt (OHP/Pytheas/AMU), S. Basa (LAM/OHP/Pytheas/AMU) report \non behalf of a larger collaboration:\n\nWe observed the field of GRB241212A (Fermi GBM team, GCN 38540; Zhang Li et al., GCN 38541; Joshi \net al., GCN 38544; Qiu et al., GCN 38545; Zhe Kang et al., GCN 38546) using the T193cm telescope \nat Observatoire de Haute-Provence (France) equipped with the MISTRAL spectro-imager. Six exposures \nwere obtained in the Y-band (6x300s) with the MISTRAL red mode during technical time from 2024 12 \nDecember 18:43 UT to 2024 12 December 19:15 UT (~+9.5h after detection). The moon was at an \nillumination of ~92% and at a distance of 13deg from target.\n\nWe do not detect the SVOM VT GRB counterpart provided by Qiu et al. (GCN 38545). The combined \nframe has a detection upper limit of Y~19.25+/-0.6 (5sigma limit). The photometric calibration \nwas performed using objects from the PanSTARRS catalog. The magnitude is not corrected for \nGalactic extinction.\n\nWe acknowledge the excellent support from Observatoire de Haute-Provence, in particular Jean Pierre \nTroncin, Francois Huppert, and Jean-Claude Brunel and the SOPHIE observers Guillaume Hebrard and Florian Destriez. ",
  "editedOn": 1734096649303
}