GCN Circular 37923
Subject
GRB 241025A: further SAO RAS optical observations
Date
2024-10-28T03:22:13Z (a month ago)
From
Moskvitin Alexander at SAO RAS <mosk@sao.ru>
Via
legacy email
A. S. Moskvitin and O. I. Spiridonova (SAO RAS), report
on behalf of the GRB follow-up team.
We observed the field of GRB 241025A (Ambrosi et al. GCN 37859;
The Fermi GBM team, GCN 37860; Godwin, GCN 37886)
with the 1-m telescope of SAO RAS equipped with the CCD-photometer.
We obtained 12 x 300 sec. images in Rc band on October 27,
19:33:44--20:42:52 UT (t_mid - T0 = 2.7719 days).
The OT (Ambrosi et al., GCN 37859; Jiang et al., GCN 37862;
Pereyra et al., GCN 37865; Xu et al., GCN 37866; SVOM/VT team,
GCN 37871; Abdi et al., GCN 37882; Watson et al., GCN 37889;
Mohan et al., GCN 37890; Vinko et al., GCN 37891; Gupta et al.,
GCN 37893; Pankov et al., GCN 37912; Moskvitin and Spiridonova,
GCN 37914; Klingler and Ambrosi, GCN 37919) is clearly detected
in our stacked frame with the brightness of R = 22.98 +/- 0.11
(R_lim = 24.1).
This preliminary photometry is based on nearby USNO-B1.0 stars
and not corrected for the Galaxy extinction.