[vsnet-grb-info 12795] GRB 130122A: MASTER-Net early marginal detection of the OT

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14142
SUBJECT: GRB 130122A: MASTER-Net early marginal detection of the OT 
DATE:    13/01/23 13:47:18 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

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

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: http://observ.pereplet.ru) 
located in Kislovodsk was pointed to the  GRB130122A  28 sec s after 
notice time and 91 sec after GRB time at 2013-01-22 23:45:40 UT in two 
polarizations.
The weather conditions were not very good and continuosly deteriorated. 
On our first (20s exposure) double set we marginally find an optical 
transient at the Swift UVOT position (Lien et al., GCN 14140) with 
unfiltered magnitude 16.8+-0.3 (m = 0.8R + 0.2B from USNO-B).

This message may be cited.