[vsnet-grb-info 25858] GRB 200613A: continued AbAO optical afterglow observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27958
SUBJECT: GRB 200613A: continued AbAO optical afterglow observations
DATE:    20/06/15 21:49:44 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

S. Belkin (IKI), A. Pozanenko (IKI), R. Ya. Inasaridze (AbAO), V. R. 
Ayvazian (AbAO),  G. V. Kapanadze (AbAO),  E. Mazaeva  (IKI), A. Volnova 
(IKI), I. Molotov (KIAM)  report on behalf of IKI-GRB-FuN:

We continue observations of Fermi  GRB 200613A (Fermi GBM team, GCN 
27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931) with  AS-32 
telescope of Abastumani observatory in R-filter. The afterglow (e.g., 
Kann et al., GCN 27935; Kennea et al., GCN 27936; Pozanenko et al., GCN 
27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943) is detected in a 
stacked image. Preliminary photometry of the afterglow is following

Date,      UT start, t-T0, Exp.,  Filter, OT,    Err., UL
                     (mid, days)

2020-06-15  17:44:15 2.53029 49*60  R       20.47  0.11  21.9

The photometry is based on nearby SDSS DR12 stars
SDSS-DR12_id        R(Lupton)
J101149.76+454320.7 12.404
J101245.45+455119.1 13.328