TITLE:   GCN CIRCULAR
NUMBER:  14238
SUBJECT: GRB 130216A: MASTER-Net early observations 
DATE:    13/02/18 11:19:43 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>

E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, 
N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, 
D.Denisenko, A.Sankovich
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-VWF robotic telescope (MASTER-Net: http://observ.pereplet.ru) in 
Kislovodsk was pointed to the GRB130216A 15 sec after notice time and 31 
sec after GRB time at 2013-02-16 22:15:52.273 UT using FERMI coordinates 
(V.Chaplin et. al. GCN14236).  We observ  SWIFT error-box by very wide 
field cameras (FOV=400 sq. deg. d=8.2 cm) and  haven`t found optical 
transient on images with 5-sigma upper limit has been about 8 mag.

MASTER II  robotic telescope  located in Kislovodsk was pointed to the 
GRB130216A 23 sec  after notice time and 582 sec after GRB time at 
2013-02-16 22:25:06.231 UT. On our first (120s exposure) set we haven`t 
found optical transient  within SWIFT error-box (A. Melandri  et. al. 
GCN14223).
The 5-sigma upper limit has been about 14.0 mag

All Ïbservations were made on high (z>85 deg.) zenith distances and in bad 
weather condition .

The message may be cited.