{
  "circularId": 37891,
  "submitter": "Jozsef Vinko at Konkoly Observator <vinko@konkoly.hu>",
  "submittedHow": "email-legacy",
  "body": "GRB 241025A: optical photometry from Konkoly \n\nJ. Vinko, K. Sarneczky, Zs. Bora, A. Horti-David, R. Konyves-Toth, L. Kriskovics, A. Pal, R. Szakats \n(Konkoly Observatory, Hungary) \n\nWe report detection and photometry of the optical afterglow of GRB 241025A \n(Ambrosi et al., GCN 37859; Fermi GBM team GCN 37860; Wang et al. GCN 37863) \ntaken with the RC80 robotic telescope at Piszkesteto Station of Konkoly \nObservatory, Hungary. The observations started on 2024-10-25 16:48:09.79 UT, \n15.19 hours after the trigger. 7 sets of 300 sec frames were collected through. \nSloan r'- and i' bands. \n\nThe optical afterglow (Jiang et al. GCN 37862; Pereyra et al. GCN 37865; SVOM/VT team GCN 37871; \nAbdi et al. GCN 37882; Watson et al. GCN 37889; Mohan et al. GCN 37890) \nwas detected on the stacked frames with the following magnitudes, calibrated \nvia nearby PS1 stars: \n\nDate       UT-middle   t-T0(days) Exp(s) r'(AB)       i'(AB) \n2024-10-25 17:18:57.70 0.65425    7x300  22.04 (0.35) 20.07 (0.17) \n\nThe magnitudes above are not corrected for galactic extinction.\n\n",
  "createdOn": 1729936526816,
  "eventId": "GRB 241025A",
  "bibcode": "2024GCN.37891....1V",
  "subject": "​GRB 241025A: optical photometry from Konkoly"
}