{
  "eventId": "GRB 250114B",
  "bibcode": "2025GCN.38947....1S",
  "submitter": "Benjamin Schneider at MIT <bschn@mit.edu>",
  "subject": "GRB 250114B: OHP/T193 optical upper limit",
  "format": "text/plain",
  "submittedHow": "web",
  "createdOn": 1736894838019,
  "body": "B. Schneider (LAM), C. Adami (LAM/Pytheas/AMU), S. Basa (LAM/OHP/Pytheas/AMU), E. Le Floc'h (CEA), A. Saccardi (CEA), D. Turpin (CEA) report on behalf of a larger collaboration:\n\nWe observed the field of the INTEGRAL GRB 250114B (Gotz et al., GCN 38938) with the T193cm telescope at the Observatoire de Haute-Provence (France) equipped with the MISTRAL spectro-imager. We obtained a total of 61 minutes (1x300s + 4x180s + 11x240s) in the i-band using the red MISTRAL setting from 2025-01-14T18:08 to 2025-01-14T19:29 (mid-time 5.6h after the trigger).\nIn the stacked image, we do not detect any new source at the XRT #2 source position (Evans et al., GCN 38941) or within the INTEGRAL error circle (Gotz et. al., GCN 38938) down to the following 5-sigma limit:\n\ni > 20.88 mag (AB)\n\nThe photometric calibration was performed using nearby stars from the PanSTARRS catalog.\n\nWe acknowledge the excellent support from Observatoire de Haute-Provence, in particular Jean Balcaen, Orlagh Creevey and Flavien Kiefer.",
  "circularId": 38947
}