GCN Circular 16729
Subject
GRB 140817A: Khureltogot optical upper limit
Date
2014-08-20T17:29:16Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Pozanenko (IKI), N. Tungalag (Research Center of Astronomy and
Geophysics MAS), S. Schmalz (AIP), A. Volnova (IKI), I.Molotov (KIAM)
report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 140817A (Sbarufatti et al., GCN 16695)
with ORI-40 telescope of Khureltogot observatory. We started
observation on Aug. 17 (UT) 14:20:48 and obtained 60 unfiltered images
of 60 s exposure. Within enhanced XRT error circle (Osborne et al., GCN
16697) we do not detect any new object and in particular the afterglow
candidate (Marshall et al., GCN 16710). Details of a photometry of the
stacked image is following
Date UT start t-T0 Filter Exp. UL(3 sigma)
(mid, days) (s)
2014-08-17 14:20:48 0.3269 None 60*60 18.2
The photometry is based on USNO-B1.0 star 1481-0233222 assuming
R=15.43.