GCN Circular 30614
Subject
GRB 210610B: Assy optical observations
Event
Date
2021-08-08T05:33:17Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V. Kim (FAI, Pulkovo Observatory), A. Pozanenko (IKI), M. Krugov (FAI),
N. Pankov (HSE, IKI), S. Belkin (IKI) report on behalf of GRB IKI FuN:
We observed the field of GRB 210610B (Lien et al., GCN 30600) with
AZT-20 telescope of Assy-Turgen observatory starting on 2021-08-07 (UT)
20:45:22.
We clearly detect the optical afterglow (Lien et al., GCN 30600; Hu et
al., GCN 30602; Lipunov et al., GCN 30607).
Preliminary photometry of the optical afterglow in a stacked image is
following
Date UT start t-T0 Exp. Filter OT Err. UL(3sigma)
(mid, days) (s)
2021-08-07 20:45:22 0.47601 75*60 r' 21.28 0.05 23.6
The photometry is based on nearby PS1 stars.