[vsnet-grb-info 3153] GRB060418: optical observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4990
SUBJECT: GRB060418: optical observations
DATE:    06/04/21 14:00:18 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

B. Hafizov (MAO),   D. Sharapov (MAO and NOT, La Palma),  A. Pozanenko
(IKI),  M. Ibrahimov (MAO) on behalf of larger GRB follow up collaboration
report:

We observed the afterglow of  GRB060418 (Falcone et al. GCN 4966) with 1.5m
telescope of  Maidanak Astronomical Observatory (MAO) in BRI-bands on April
18. A series of BRI images (B: 8x180s, R: 7x120s, I:  9x120s) were taken on
April 18 (UT)  19:54  -  21:07 and  9x120s  I-images were taken between
22:14 - 22:37. We detect OT (Falcone et al. GCN 4966) on single images in I
and R;   preliminary OT brightness estimation of the first I-image
(UT=19:54) is ~20.5. Data reduction is continuing.

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