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GCN Circular 15692

GRB 140105A/Fermi410578384: MASTER-Net early optical observations
2014-01-06T14:46:32Z (10 years ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
E. Gorbovskoy,  V. Lipunov, D.Denisenko, V.Kornilov, D.Kuvshinov, N.Tyurina, 
P.Balanutsa,  A.Kuznetsov
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
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: 
located in Kislovodsk was pointed to the  GRB140105.06 60 sec after notice 
time and 21 sec after trigger time at 2014-01-05 01:32:39.028 UT. On our 
first (10s exposure) set we haven`t found optical transient  within our 
FOW  error-box (ra=13 43 08 dec=+52 55 47) .
The 5-sigma upper limit has been about 16.8 mag.
We have one possible OT candidate iPTF14ae (Singer, Kasliwal and Cenko, 
GCN 15686) inside our FOV. But we do not see any OT at this place 
brighter  than 16.8 unfiltered magnitude.

We have Very Wide Field camera images at this direction (FOV=2x400 
square degrees). We have a part of the Error Box at synchronous 
images (Shaolin Xiong  and Valerie Connaughton, GCN 15688). The reduction 
is being continued.

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