GCN Circular 15713
Subject
GRB 140108A: Mondy optical upper limit
Date
2014-01-10T12:39:53Z (10 years ago)
From
Alina Volnova at SAI MSU <alinusss@gmail.com>
A. Volnova (IKI), E. Klunko (ISTP), M. Eselevich(ISTP), A.
Pozanenko(IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 140108A (Racusin et al., GCN
15699) with AZT-33IK telescope of Sayan observatory (Mondy) starting
Jan., 09 (UT) 15:10:20. We obtained several images in R-filter with
exposure of 180 seconds. On the stacked image we do not detected
the optical afterglow (Gorbovskoy et al., GCN 15701; Gorosabel et al.,
15702).
The details of the photometry are the following:
UT start, t-T0 Filter Exp. OT UL
(mid, days) (s) (3 sigma)
15:10:20 0.94627 R 34*180 n/d 22.0
The photometry is based on 3 USNO-B1.0 stars:
USNO-B id RA Dec R2
1487-0322168 21:40:30.85 +58:43:53.1 18.18
1487-0322049 21:40:20.16 +58:43:58.3 17.96
1487-0322069 21:40:21.62 +58:45:00.6 17.29