TITLE:   GCN CIRCULAR
NUMBER:  11129
SUBJECT: GRB 100814A: optical observations
DATE:    10/08/18 17:23:27 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

L. Elenin, I. Molotov (ISON), A. Pozanenko (IKI) report on behalf of larger 
GRB  follow-up collaboration:

We observed the field of the Swift GRB 100814A (Beardmore et al. GCN  11087) 
with 0.45-m telescope Ïf ISON-NM observatory  on Aug. 17 (UT) 10:07:17 - 
10:48:07.

The afterglow (Schaefer et al. GCN  11086; Beardmore et al. GCN  11087)  is 
well detected. Preliminary photometry of unfiltered image against USNO-B1.0 
field stars (R)  is following

T-T0,  filter, exposure,  OT
(day)

3.2689    W     300x7    19.79  +/- 0.05

the photometry error is statistical only.