GCN Circular 27849
Subject
GRB 200528A: Assy optical upper limit
Date
2020-05-29T08:09:05Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), V. Kim (AFIF, Pulkovo Observatory), A. Pozanenko (IKI),
M. Krugov (AFIF), E. Mazaeva (IKI), A. Volnova (IKI) report on
behalf of larger GRB IKI FuN collaboration:
We observed GRB 200528A (Fermi GBM Team GCN 27831; Ambrosi et al.,
GCN 27832) with AZT-20 1.5 m telescope of Assy-Turgen observatory
starting on May., 28 (UT) 16:16:12.
We do not detect any sources in the Swift-XRT extended position (Evans
et al., GCN 27836).
Preliminary photometry of the field is following.
Date UT start t-T0 Filter Exp. OT Err. UL (3sigma)
(mid, days) (s)
2020-05-28 16:16:12 0.26777 r(AB) 54*60 n/d n/d 22.4
The photometry is based on the nearby stars of SDSS catalog
SDSS-DR12_id r
J114613.33+581329.5 19.455
J114632.90+581307.2 19.190
J114549.81+581044.3 19.004
J114600.53+580839.6 16.985