GCN Circular 17138
Subject
GRB 141121A: Mondy optical observations
Event
Date
2014-12-05T14:58:30Z (11 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Volnova (IKI), E. Klunko (ISTP), I. Korobtsev
(ISTP), M. Eselevich (ISTP), A. Pozanenko (IKI) report on behalf of
larger GRB follow-up collaboration:
We continue observations of the field of GRB 141121A (Lien et al., GCN
17075) with AZT-33IK telescope of Sayan observatory (Mondy). We obtained
several images in R-filter on Nov., 30, Dec. 1 - 2. In a combined image
we detect optical afterglow (Tanga et al., GCN 17078; Perley et al.,
GCN 17081).
A preliminary photometry of the OT is based on nearby SDSS DR9 stars:
date UT start t-T0 Filter Exp. OT OT_err
(mid, days) (s)
2014-11-30 18:45:29 9.7139 R 119*120 22.20 0.10
2014-12-01 18:35:23 10.6644 R 72*120 22.25* 0.17
2014-12-02 18:09:52 11.6606 R 92*120 22.40* 0.25
*)Due to bad seeing the photometry includes both afterglow and nearby
source (Watson et al., GCN 17105; Mazaeva et al., GCN 17111).