GCN Circular 30343
Subject
GRB 210619B: Sayan observatory 1.6-m telescope observations
Event
Date
2021-06-29T20:14:37Z (4 years ago)
From
Rodion Burenin at IKI, Moscow <rodion@hea.iki.rssi.ru>
I. Zaznobin, R. Burenin, A. Lutovinov (IKI),
E. Klunko, M. Eselevich (ISTP SB RAS)
report:
The field of GRB 210619B detected by Swift (D'Avanzo et al. GCN
30261), GECAM (Zhao et al. GCN 30264), CALET (Kawakubo et al. GCNC
30284), SRG/ART-XC (Levin et al. GCNC 30283), Fermi-LAT (Axelsson et
al. GCNC 30270), Konus-Wind (Svinkin et al. GCN 30276) and Fermi/GBM
(Poolakkil et al. GCNC 30279) was observed with the Sayan observatory
1.6-m telescope AZT-33IK, using a CCD photometer, starting at
2021/06/20 17:58 UT, i.e. approximately 18 hours after the burst.
We obtained 12x60 s images in each g,r,i,z SDSS filter. The OT is
clearly detected in every frame, with the following magnitudes:
g = 20.26 +- 0.06
r = 19.51 +- 0.08
i = 19.08 +- 0.06
z = 18.69 +- 0.07