GCN Circular 14255
Subject
GRB 121128A: optical upper limit in Maidanak observatory
Date
2013-03-04T20:09:12Z (11 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Pozanenko (IKI), A. Volnova (SAI MSU), A. Sergeev (Institute of Radio
Astronomy of NASU), O. Burhonov (UBAI), I. Molotov (KIAM) report on
behalf of larger GRB follow-up collaboration:
We observed the field of Swift GRB 121128A (Oates et al., GCN 14007)
with AZT-22 telescope of Maidanak observatory starting on Nov. 30 (UT)
13:47:48 under mean seeing (FWHM) of about 1 arcsec. We obtained several
images of 180 s exposure in R filter. The optical afterglow
(Oates et al., GCN 14007; Japelj et al., GCN 14008) is not detected in
our images. A photometry of the stacked image is based on nearby
USNO-B1.0 stars:
t_start, T0+ (mid), filter, exp., OT, Upper Limit(3sigma)
(UT) d s
13:47:48 2.37924 R 15x180 n/d 23.7