[vsnet-grb-info 15742] GRB 141028A: TShAO optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17030
SUBJECT: GRB 141028A: TShAO optical observation
DATE:    14/11/05 20:23:23 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

E. Mazaeva (IKI),  A. Volnova (IKI), A. Khruslov (INASAN), A. Kusakin 
(Fesenkov Astrophysical Institute), A. Pozanenko (IKI) report on behalf 
of larger GRB follow-up collaboration:

We observed the field of GRB 141028A (Bissaldi et al., GCN 16969)
with  Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical
Observatory on Oct., 29  starting on (UT) 15:58:47.  We obtained several 
images in R-filter. In a combined image  we clearly  detect optical 
afterglow (Gorbovskoy et al., GCN 16972; Graham et al., GCN 16977). 
Details of the photometry are following:

date       UT start   t-T0      Filter  Exp.    OT   OT_err
                      (mid, days)        (s)

2014-10-29 15:58:47   1.2300    R       10*300  20.5 0.10


The photometry is based on  following SDSS DR9 stars:

SDSS_id                   R_Lupton
J213021,99-001255,7       15.503
J213030,76-001427,8       17.205
J213035,56-001205,6       16.620