[vsnet-grb-info 18892] GRB 161214A: MASTER-IAC early optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20343
SUBJECT: GRB 161214A: MASTER-IAC early optical observations
DATE:    16/12/27 16:40:44 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at 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 IAC was pointed to the  GRB161214A  17 sec after notice time 
and 27 sec after trigger time at 2016-12-14 04:46:43 UT. On our first (10s 
exposure)  set we haven`t found optical transient  within INTEGRAL 
error-box (ra=12 43 47 dec=+06 44 03 r=3.18) (Mereghetti et al., GCN 
20251). The 5-sigma upper limit set is about 16.2 mag(polaroid, 
unfiltered).

The observations made on zenit distance = 36 degrees, galaxy latitude b = 
69 degree.
The moon (99 % bright part) is 40 degrees above the horizon. The distance 
between  moon and  object is 102.6
The sun  altitude  is -39 degree.
The object can be observed till sunrise at 2016-12-14 07:46:48

Maximal coadded limit ~18.9 m. No OT found.

The message may be cited.