GCN Circular 30365
Subject
GRB 210702A: Chilescope optical observations
Date
2021-07-03T12:48:04Z (3 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Pozanenko (IKI), N. Pankov (HSE, IKI), M. Krugov
(FAI) report on behalf of GRB IKI FuN collaboration:
We observed the field of Swift GRB 210702A (Lien et al., GCN 30351)
with Chilescope RC-1000 starting on 2021-07-02 (UT) 23:40:26 in
r'-filter. Within enhanced XRT position (D'Elia et al., GCN 30358) we
clearly detect the afterglow (Lien et al., GCN 30351; Lipunov et al.,
GCN 30352; Groot et al., GCN 30354; Kuin et al., GCN 30355; Kuin et al.,
GCN 30356; Xu et al., GCN 30357; Romanov et al., GCN 30364).
Preliminary photometry of the afterglow is following
Date UT start t-T0 Filter Exp. OT(AB) Err. UL(AB)
(mid, days) (s)
2021-07-02 23:40:26 0.193202 r' 1*600 17.01 0.05 19.7
The photometry is based on nearby stars from the APASS_DR8
RA DEC r
11:14:16.46880 -36:49:58.2132 15.187
11:14:36.96576 -36:48:30.0132 15.320