GCN Circular 30212
Subject
GRB 210610A: CrAO/ZTSH optical observations
Date
2021-06-11T21:17:06Z (3 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
N. Pankov (IKI, HSE), A. Pozanenko (IKI), V. Rumyantsev (CrAO), S.
Belkin (IKI, HSE) report on behalf of IKI GRB FuN:
We observed the GRB 210610A (Page et al., GCN 30170) with ZTSH 2.6m
telescope of CrAO observatory starting on June 11 (UT) 19:46:53. The
optical afterglow first reported by UVOT (Page et al., GCN 30170) is
clearly detected in each of a single image of 120 exposure in R filter.
Preliminary photometry of the afterglow in the first image is following
Date UT start t-T0 Filter Exp. OT err
(mid, days) (s)
2021-06-11 19:46:53 0.99683 R 1*120 19.50 0.12
The photometry is based on several nearby USNO-B1.0 (R2) stars
USNO-B1.0 id
USNO_B10-1043-00282648
USNO_B10-1043-00282621