TITLE:   GCN CIRCULAR
NUMBER:  24892
SUBJECT: GRB 190627A: NUTTelA-TAO optical observations
DATE:    19/06/27 20:42:40 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

A. Pozanenko (IKI), M. Krugov (AFIF), P. ��inaev (IKI), I. Reva (AFIF), 
B. Grossan (ECL), E. Mazaeva  (IKI), A. Volnova (IKI) report on behalf 
of larger GRB IKI FuN collaboration:

We observed the field of the  GRB 190627A    (Sonbas  al., GCN  24888) 
with CDK700 telescope (NUTTelA-TAO project) of Assy-Turgen observatory 
starting on June 27  (UT) 17:01:00  in  R-filter.    We clearly detect 
the optical afterglow (Sonbas  al., GCN  24888; Siegel al., GCN  24889).
Preliminary photometry of the afterglow is following.

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

2019-06-27 17:19:20   0.25056     R     60  17.44 0.05
2019-06-27 19:10:35   0.32782     R     60  17.73 0.07


The photometry is based on the nearby USNO-B1  (R2) stars.