{
  "circularId": 40510,
  "bibcode": "2025GCN.40510....1K",
  "eventId": "GRB 250502A",
  "submitter": "Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de>",
  "body": "\nK. Kritik, L. Berthel, T. Ranganathan, J. Kahl, S. Schmidl (all FSU Jena),\nM. Hartmann, B. Stecklum, S. Klose (all Tautenburg) report:\n\nWe observed the field of GRB 250502A (Wang et. al., GCN 40313) with\nthe 1.3m Schmidt telescope using the prime focus CCD\ncamera. Observations started on May 2, 2025, at 22:18:13 UT, about\n13.5 hrs after the SVOM trigger, at a mean airmass of 2.2.\n\nThe optical transient first reported by Rakotondrainibe et. al. (GCN\n40315) was clearly detected. Based on 40 min of exposure, at a midtime\nof 22:38 UT, we measure a preliminary r-band magnitude (AB) of 20.88\n+/- 0.20 mag, calibrated against Pan-STARRS DR1. We apologize for the\nlate submission of this circular.\n\n",
  "createdOn": 1747836566308,
  "submittedHow": "email",
  "subject": "GRB 250502A: Tautenburg observations"
}