[vsnet-grb-info 12782] GRB 130102B: MASTER synchronous observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14137
SUBJECT: GRB 130102B: MASTER synchronous observations 
DATE:    13/01/05 14:27:55 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

H. Levato and C. Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

C. Mallamaci, C. Lopez and F. Podest
Observatorio Astronomico Felix Aguilar (OAFA)

E. Gorbovskoy, V. Lipunov,  V. Kornilov, D. Denisenko, A. Kuznetsov,
D. Kuvshinov, A. Belinski, N. Tyurina, N. Shatskiy, P. Balanutsa, D. Zimnukhov, 
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

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

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

V. Krushinski, I. Zalozhnich,  A. Popov, A. Bourdanov, A. Punanova
Ural Federal University

MASTER-ICATE robotic very wide field cameras (FOV=2x384 square degrees,
D=72mm, f/1.2, 1 pix = 22 arcsec, http://observ.pereplet.ru) located
in Argentina (Observatorio Astronomico Felix Aguilar,
http://93.180.27.230:8080/) were imaging the sky area of MAXI/GSC GRB 
130102B (M. Higa et al., GCN 14130) before, during and after trigger time 
with 2 sec exposures without time gap. Elevation of center of GRB error 
box at the moment of MAXI/GSC trigger was 16 deg.

We have covered the whole interval of gamma-ray activity by KONUS-WIND 
(Golenetski et al., GCN 14135) which corresponds to T-20 sec to T+10 sec 
from MAXI/GSC trigger time.

We haven't found optical transient within MAXI/GSC error box on our 2-s
frames and on the coadded image made of 15 frames and total exposure of 30 
seconds. The 3-sigma upper limit (with the reference to V magnitudes from 
Tycho-2 catalog) has been about 10.0 mag on single images and 11.5 mag on 
coadded image.

The reduction of the whole data set is continuing.

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