TITLE:   GCN CIRCULAR
NUMBER:  23539
SUBJECT: GRB 181213A: AbAO optical observations
DATE:    18/12/14 11:31:27 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

S. Belkin (IKI), A. Pozanenko (IKI), R. Ya. Inasaridze (AbAO), 
V.R. Ayvazian (AbAO),    G. V.  Kapanadze (AbAO),   E. Mazaeva (IKI), 
A. Volnova  (IKI),  I. Molotov (KIAM) report on behalf of larger GRB 
follow-up collaboration:

We observed the field of GRB 181213A (Evans et al., GCN 23525; Osborne 
et al., GCN 23528) with AS-32 (0.7m) telescope of Abastumani Observatory 
starting on Dec. 13 (UT) 15:42:55.  We detected the OT   (e.g. Lipunov 
et al., GCN 23526; Hu et al. GCN 23527;  Siegel  et al., GCN 23529; 
Belkin et al., GCN 23530). Preliminary photometry of the afterglow is 
following.

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

2018-12-13 15:42:55 0.13264 R     65*60 18.75 0.08 20.9

The photometry is based on nearby USNO-B1.0 stars
USNO-B1.0_id R2
1684-0061916 15.83
1684-0061968 16.55