GCN Circular 14020
Subject
GRB 121125A: optical upper limit
Date
2012-11-29T17:52:31Z (11 years ago)
From
Alina Volnova at SAI MSU <alinusss@gmail.com>
A. Volnova (SAI MSU, IKI), D. Varda (ISON), E. Sinyakov (ISON), I. Molotov
(KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up
collaboration:
We observed the field of GRB 121125A (Barlow et al., GCN 13993) with ORI-25
telescope of ISON-Blagoveshensk observatory starting on Nov.25 (UT)
09:05:39. We took several unfiltered images. We do not detect the OT
(Barlow et al., GCN 13993; Yurkov et al., GCN 13994; Im et al., GCN 13995)
in any combined images. A photometry of stacked image is based on nearby
USNO-B1.0 stars (R2):
T_start T0+, Filter, exposure, UL (3 sigma)
(UT) mid (d) (s)
08:58:19 0.03078 none 52 x 40 15.6