TITLE:   GCN CIRCULAR
NUMBER:  20345
SUBJECT: GRB 161214B: MASTER-Kislovodsk early optical observations
DATE:    16/12/27 17:03:34 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>

D.Vlasenko, V. Lipunov, E.Gorbovskoy, N.Tyurina, V.Kornilov,
O.Gress, P.Balanutsa, A.Kuznetsov, D.Kuvshinov
Lomonosov Moscow State University, Sternberg Astronomical Institute

R. Rebolo, M. Serra Ricart, N. Lodieu, G. Israelian
The Instituto de Astrofisica de Canarias

R.Podesta, C.Lopez, F.Podesta
Observatorio Astronomico Felix Aguilar (OAFA), San Juan Univerdity,

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

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

O.Gres, K.Ivanov, J.Rabinovich, N.M.Budnev,
Irkutsk State University

A. Tlatov, V.Senik, D. Dormidontov, A.Parkhomenko
Kislovodsk Solar Station of the Pulkovo Observatory

V.Yurkov, Yu.Sergienko, A.Gabovich
Blagoveschensk Educational State University, Blagoveschensk


MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Kislovodsk was pointed to the  GRB161214B  882 sec after notice 
time and 900.34 sec after trigger time at 2016-12-14 17:35:11 UT. On our 
first (180s exposure)  set we haven`t found optical transient  within 
Swift error-box (ra=00 16 16 dec=+07 26 10 r=3.00) (D'Avanzo et al., GCN 
20257). The 5-sigma upper limit set is about 16.5 mag(polaroid, 
unfiltered).

The observations made on zenit distance = 49 degrees, galaxy latitude b = 
-54 degree.
The moon (98 % bright part) is 29.5 degrees above the horizon. The 
distance between  moon and  object is 87
The sun  altitude  is -40 degree.
The object can be observed till 2016-12-14 22:27:18

Maximal coadded limit ~18.7 m. No OT found.

The message may be cited.