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GCN Circular 20215

GRB 161129A: TSHAO optical observations / possible afterglow+host galaxy
2016-11-29T16:41:01Z (8 years ago)
Alexei Pozanenko at IKI, Moscow <>
E. Mazaeva (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Kusakin 
(Fesenkov Astrophysical Institute),  A. Volnova (IKI), A. Pozanenko 
(IKI) report on behalf of larger GRB follow-up collaboration:

We observed the field of 161129A  (Kocevski et al., GCN 20210)  with 
Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory. 
We obtained several images in R filter starting on 2016-11-29 (UT) 
12:51:12.  Within enhanced XRT position (Beardmore et al. GCN 20211)  we 
detected  optical source which is absent in USNO-B1.0 but barely visible 
in DSS2 (red). At the moment we can not say anything about the source 
variability. The source might be a superposition of the afterglow and a 
host galaxy.  Preliminary photometry of the source  is following

Date       UT start   t-T0   Filter  Exp.   OT     Err.  UL
                       (mid, days)    (s)

2016-11-29 12:51:12 0.25949  R       13*300 20.60  0.06  22.4

Photometry is based on nearby USNO-B1.0 stars
USNO-B1.0_id    R2
1221-0612083 17.30
1221-0612140 19.02
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