[vsnet-grb-info 21423] GRB 181201A: continued optical observations in Mondy

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  23522
SUBJECT: GRB 181201A: continued optical observations in Mondy
DATE:    18/12/09 20:12:31 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

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

We continue  observations  the   optical afterglow (e.g. Podesta et al., 
GCN  23470; Kong  GCN 23475)  of INTEGRAL GRB 181201A  (Mereghetti et 
al., GCN  23469)  with   AZT-33IK telescope of Sayan observatory 
(Mondy).    Preliminary photometry of the OT is following.

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

2018-12-03 11:24:39 2.38658 R      30*120 18.91  0.03
2018-12-05 11:26:24 4.38780 R      30*120 20.03  0.09
2018-12-07 10:57:13 6.36753 R      30*120 20.23  0.05


The photometry is based on the SDSS-DR12 star

SDSS-DR12_id           R(Lupton)
J211710.81-123706.3    16.3