[vsnet-grb-info 21386] GRB 181201A: optical observations in Chilescope observatory

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  23485
SUBJECT: GRB 181201A: optical observations in Chilescope observatory
DATE:    18/12/02 13:19:51 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

S. Belkin (IKI), A. Pozanenko (IKI), E. Mazaeva (IKI), A. Volnova (IKI), 
M. Krugov (AFIF) report on behalf of IKI-FuN follow-up collaboration:

We observed  the field of the INTEGRAL GRB 181201A  (Mereghetti et al.,
GCN  23469)  with RC-1000 telescope of CHILESCOPE observatory. 
Observations started on Dec. 02 (UT) 01:11:25 in r'-filter.  We detected 
optical afterglow  (e.g. Podesta et al., GCN  23470; Kong, GCN 23475; 
Lipunov et al., GCN 23476: Volnova et al., GCN 23477; Heintz et al., GCN 
23478; Mazaeva et al., GCN 23479). Preliminary photometry   is following.

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

2018-12-02 01:11:25 0.9416  r'     300    18.00  0.05

The photometry is based on the SDSS DR12 star

SDSS-DR12_id        r
J211710.81-123706.3 16.517