TITLE:   GCN CIRCULAR
NUMBER:  16688
SUBJECT: GRB 140814A: MASTER optical follow-up inspection
DATE:    14/08/15 12:09:00 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>

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

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

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

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

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 (MASTER-Net: http://observ.pereplet.ru) 
located in Kislovodsk was automaticaly inspected  GRB140814A  (Uchida et 
al., GCN 16686) error box. The observations was started at 2014-08-14 
17:36:16 UT i.e.  37425 sec (~10.3 h) after trigger time directly after 
sunset and proceeded within ~1 hour. We cover full MAXI error-box (Uchida 
et al. GCN 16686).  On our single and coadd images we not found credible 
optical transient brighter then 20.0m .

The 5-sigma upper limit has been about 18.5m on single 180 s image and 
20.0m on coadd of 10 images with total exposure 1800 s.

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