{
  "eventId": "GRB 250920B",
  "body": "A. Reguitti (INAF/OAPd), L. Tomasella (INAF/OAPd), D. B. Malesani \n(DAWN/NBI and Radboud) report on behalf of a larger collaboration:\n\nWe observed the field of GRB 250920B (Gupta et al., GCN 41898; Sonawane \n& Meegan, GCN 41919) using the 67/92 Schmidt Telescope located at the \nAsiago observatory (Italy). Observations were carried out using a clear \nfilter, which covers roughly the r and i bands.\n\nThe optical counterpart (Gupta et al., GCN 41898; Wu et al., GCN 41908; \nHall et al., GCN 41914; Kuin & Gupta, GCN 41915) is well detected in our \nframes. At a mean epoch 2025 Sep 20.771 UT (9.74 hr after the GRB), we \nmeasure an AB magnitude r = 18.62 +- 0.06 (calibrated directly against \nr-band magnitudes from the Pan-STARRS catalog).\n\nConsidering the filter difference, our measurement is consistent with \nthe nearly simultaneous observation by Hall et al. (GCN 41914).\n",
  "submittedHow": "email",
  "createdOn": 1758477442655,
  "submitter": "Daniele Bjørn Malesani at Cosmic Dawn Center, Niels Bohr Institute <daniele.malesani@nbi.ku.dk>",
  "bibcode": "2025GCN.41932....1R",
  "subject": "GRB 250920B: Asiago optical observations",
  "circularId": 41932
}