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GCN Circular 27978

Subject
GRB 200613A: Mondy optical observations
Date
2020-06-18T10:44:12Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI),�� A. Pozanenko (IKI), E. Klunko (ISTP),�� M. Eselevich 
(ISTP), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf of IKI-GRB FuN:

We observed the�� GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et 
al., GCN 27930; Ohno et al., GCN 27931; Yamaoka Ohno et al., GCN 27964) 
with with AZT-33IK 1.5-m telescope of Sayan observatory (Mondy) starting 
on 2020-06-17 (UT) 16:30:12.

The optical afterglow (e.g., Kann et al., GCN 27935; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943; Marshall, GCN 27944; Liu et al., GCN 27949; Belkin et al., GCN 27958) is detected in a stacked image. Preliminary photometry of the afterglow is following

Date������������ UT start�� t-T0������ Filter Exp.���� OT������ Err. UL
 �������������������������������������� (mid, days)�������� (s)
2020-06-17 16:30:12�� 4.47365 R���������� 22*120 20.94 0.14 22.1

The photometry is based on nearby SDSS stars
SDSS-DR12_id���������� R(Lupton)
J101206.52+454606.4 14.962
J101207.75+454443.4 17.877
J101206.50+454322.2 15.151
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