GCN Circular 22923
Subject
GRB 180706A: TSHAO optical observations
Date
2018-07-06T21:15:30Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), I. Reva (FAPHI), E. Mazaeva (IKI), A. Pozanenko (IKI),
A. Kusakin (FAPHI), M. Krugov (FAPHI) report on behalf of larger GRB
follow-up collaboration:
We observed the field of GRB 180706A (Stamatikos et al., GCN 22909)
with Zeiss-1000 telescope of Tien Shan Astronomical Observatory starting
on July 06 (UT) 16:18:35. We obtained several images in R-filter. The
optical afterglow (Stamatikos et al., GCN 22909; Watson et al., GCN
22910) is clearly detected in a combined image. Preliminary photometry
of the afterglow is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2018-07-06 16:18:35 0.35345 R 29*120 20.65 0.09 22.2
The photometry is based on several SDSS-DR12 stars.
Ref.stars
SDSS-DR12_id R(Lupton)
J120642.39+660133.6 18.5600.025
J120649.22+660218.2 17.5190.018
J120653.24+660249.5 17.9870.017