[vsnet-grb-info 15936] GRB 141222A: First MASTER-SAAO optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17224
SUBJECT: GRB 141222A: First MASTER-SAAO optical observation
DATE:    14/12/23 16:08:15 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

D.Buckley, S. Potter, A. Kniazev
South African Astronomical Observatory

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

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

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

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

V.Krushinsky, I.Zalozhnih,  A. Popov
Ural Federal University, Kourovka

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

C. Mallamacci, C. Lopez and F. Podest
Observatorio Astronomico Felix Aguilar (OAFA), San Juan National 
University, Argentina


MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
instaleted several days ago  in South African Astronomical 
Observatory (Sutherland) automaticaly was pointed 
to the  Fermi_LAT GRB141222A (McEnery et al., GCN 17218)  after error box 
rised     at 2014-12-22 22:34:35 UT (15.5 hours  after trigger time) in 
unfiltered regime.

Because we have no reference images we can only use DSS stars.
There is no any optical transients brighter  20.8 unfiltered magnitude
inside error box (between 2014-12-22 22:34:35 and 2014-12-23 00:26:09).

We note that error box has small Galactic Latitude b = 4.3 but no very
big absorption in R and I, they  are 0.9 and 0.7 correspondently (Schlafly 
& Finkbeiner 2011, ApJ 737, 103).

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