GCN Circular 26018
Subject
GRB 191016A: AZT-20 (Assy observatory) optical photometry
Date
2019-10-17T10:18:43Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V. Kim (AFIF, Pulkovo Observatory) A. Pozanenko (IKI), M. Krugov (AFIF),
I. Reva (AFIF), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf
of larger GRB IKI FuN collaboration:
We observed the field of the GRB 191016A (Gropp al., GCN 26008) with
AZT-20 telescope of Assy-Turgen observatory (MPC observatory code 217)
starting on Oct. 16 (UT) 14:58:49 in r'-filter. We clearly detect
the optical afterglow (Watson al., GCN 26010; Zheng al., GCN 26011;
Watson al., GCN 26015; Hu et al., GCN 26017).
Preliminary photometry of the afterglow is following.
Date UT start t-T0 Filter Exp. OT Err.
(mid, days) (s)
2019-10-16 14:58:49 0.48336 r' 120*30 20.6 0.15
The photometry is based on the nearby USNO-B1 stars and BRI
transformations to r'.
The photometry in agreement with non detection of the optical afterglow
by Jelinek et al. (GRB 26013).