GCN Circular 17103
Subject
GRB 141121A: TSHAO optical observations
Event
Date
2014-11-27T00:21:38Z (11 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Kusakin
(Fesenkov Astrophysical Institute), E. Mazaeva (IKI), A. Pozanenko (IKI)
report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 141121A (Lien et al., GCN 17075)
with Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical
Observatory starting on Nov. 22 (UT) 21:45:26. We obtained several
images in R-filter. In a combined image we clearly detect optical
afterglow (Tanga et al., GCN 17078; Perley et al., GCN 17081).
A preliminary photometry is based on nearby SDSS DR9 stars:
date UT start t-T0 Filter Exp. OT OT_err
(mid, days) (s)
2014-11-22 21:45:26 1.8093 R 26*300 20.88 0.03