[vsnet-grb-info 14729] GRB 140320D: MASTER optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16043
SUBJECT: GRB 140320D: MASTER optical observations
DATE:    14/03/30 08:42:43 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk
Irkutsk State University

E. Gorbovskoy, V. Lipunov, M. Pruzhinskaya, D.Denisenko, V.Kornilov, N.Tyurina, 
P.Balanutsa, A.Kuznetsov, V.V.Chazov, D.Kuvshinov
Lomonosov Moscow State University, Sternberg Astronomical Institute

V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk

A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory

V.Krushinski, I.Zalozhnih,  A. Popov
Ural Federal University, Kourovka

Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

Claudio Mallamaci, Carlos Lopez and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)

MASTER II  robotic telescope located in Tunka  (MASTER-Net: 
http://observ.pereplet.ru)  have done a survey of the large area 
around IPN error box (Hurley et. al. GCN16023). The survey  was started 
2014-03-21 13:15:06  i.e.  16h 53m after the burst and proceeded during 5 
hours. The 5 sigma unfiltered upper limit was ~17.5 m on single 
180 image and ~18.8 m on coadd of 5 images with total exposure  900 s.

We haven`t found  credible  optical afterglow candidate within IPN error box.

The covarege map is available at
http://master.sai.msu.ru/static/GRB/GRB140320D_map.png

The message may be cited.