[vsnet-grb-info 18776] GRB 161129A: Mondy optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20226
SUBJECT: GRB 161129A: Mondy optical observations
DATE:    16/12/01 17:04:15 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

E. Mazaeva (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), A. Volnova
(IKI), I. Korobtsev (ISTP)  report on behalf of larger GRB follow-up
collaboration:

We observed the field of  GRB 161129A  (Kocevski et al., GCN 20210) with 
  AZT-33IK telescope of Sayan observatory (Mondy) starting on November, 
30 (UT) 11:19:53. We obtained several images in R-filter.
We detected  a source coinsiding with optical afterglow (Mazaeva et al. 
GCN 20215; Klose et al. GCN 20216; Kuin et al. GCN 20217; Kuroda et al. 
GCN 20218; Yanagisawa et al. GCN 20223). Preliminary photometry of a 
combined image is following

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

2016-11-30 11:19:53  1.19324  R      29*120    21.60  0.17  22.8

Photometry is based on nearby USNO-B1.0 stars
USNO-B.1_id    R2
1221-0612083 17.30
1221-0612140 19.02