GCN Circular 37891
Subject
GRB 241025A: optical photometry from Konkoly
Date
2024-10-26T09:55:26Z (6 days ago)
From
Jozsef Vinko at Konkoly Observator <vinko@konkoly.hu>
Via
legacy email
GRB 241025A: optical photometry from Konkoly
J. Vinko, K. Sarneczky, Zs. Bora, A. Horti-David, R. Konyves-Toth, L. Kriskovics, A. Pal, R. Szakats
(Konkoly Observatory, Hungary)
We report detection and photometry of the optical afterglow of GRB 241025A
(Ambrosi et al., GCN 37859; Fermi GBM team GCN 37860; Wang et al. GCN 37863)
taken with the RC80 robotic telescope at Piszkesteto Station of Konkoly
Observatory, Hungary. The observations started on 2024-10-25 16:48:09.79 UT,
15.19 hours after the trigger. 7 sets of 300 sec frames were collected through.
Sloan r'- and i' bands.
The optical afterglow (Jiang et al. GCN 37862; Pereyra et al. GCN 37865; SVOM/VT team GCN 37871;
Abdi et al. GCN 37882; Watson et al. GCN 37889; Mohan et al. GCN 37890)
was detected on the stacked frames with the following magnitudes, calibrated
via nearby PS1 stars:
Date UT-middle t-T0(days) Exp(s) r'(AB) i'(AB)
2024-10-25 17:18:57.70 0.65425 7x300 22.04 (0.35) 20.07 (0.17)
The magnitudes above are not corrected for galactic extinction.