GCN Circular 22913
Subject
GRB 180705A: TSHAO optical upper limit
Date
2018-07-06T11:29:42Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Pozanenko (IKI), A. Kusakin (FAPHI), I. Reva
(FAPHI), A. Volnova (IKI), M. Krugov (FAPHI) report on behalf of larger
GRB follow-up collaboration:
We observed the field of GRB 180705A (Stamatikos et al., GCN 22902)
with Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory
starting on July 05 (UT) 16:13:52. We obtained several images in
R-filter. Within enhanced XRT Swift-XRT position (Goad et al., GCN
22906) we do not detect any object. Preliminary photometry of the
field is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2018-07-05 16:13:52 0.04895 R 25*120 n/d n/d 21.3
The photometry is based on several nearby SDSS-DR12 stars.
Ref.stars
SDSS-DR12_id R(Lupton)
J141030.67-113927.0 17.460
J141015.17-113809.7 17.680