[vsnet-grb-info 15260] GRB 140709B: MASTER optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16552
SUBJECT: GRB 140709B: MASTER optical observation
DATE:    14/07/09 16:04:23 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, V.Kornilov, D.Kuvshinov,
  N.Tyurina,  P.Balanutsa, A.Kuznetsov, V.V.Chazov, D.Denisenko, 
Lomonosov Moscow State University,
Sternberg Astronomical Institute

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

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

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

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 (MASTER-Net: http://observ.pereplet.ru) 
located in Tunka was pointed to the  GRB140709B  40 sec after Notice 
time and 94 sec after trigger 
time at 2014-07-09 15:17:19 UT (Swenson et al., GCN 16551). On our first 
(20s exposure)  set we  haven`t found optical transient  within SWIFT 
BAT error-box.
The 5-sigma upper limit has been about 17.1mag
We have number images with out OT brighter 18.2  at
  94s < T - T_trigger < 289s.

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