[vsnet-grb-info 18752] GRB 161119A: MASTER-SAAO possible OT detection during Fermi Alert

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20201
SUBJECT: GRB 161119A: MASTER-SAAO possible OT detection during Fermi Alert 
DATE:    16/11/21 19:49:43 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V.M. Lipunov, E.Popova, E.Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina,
A.V.Krylov, I.Gorbunov, P.Balanutsa, A.Kuznetsov, V.V.Chazov
Lomonosov Moscow State University, Sternberg Astronomical Institut of MSU

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

R.Podesta, C.Lopez, F. Podesta
Observatorio Astronomico Felix Aguilar (OAFA) , National University of San 
Juan, Argentina

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

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

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

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias

MASTER OT J032252.81-482912.8 discovery

MASTER-SAAO  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in SAAO was starting survey on the FERMI  GRB161119.63 error-box 
(ra=03 08 45 dec=-47 12 35 r=3.27)  8795 sec after notice time and 11978 
sec after trigger time at 2016-11-19 18:30:45 UT. The 5-sigma upper limit 
on our first (60s exposure)  set is about 18.9 mag

During inspection of Fermi trigger 501261070 ( RaDec=47.190;-47.210, 
GRB_ERROR=3.27deg, GRB_TIME=2016/11/19 15:11:06.40UT 
http://gcn.gsfc.nasa.gov/other/501261070.fermi  , at alert time the 
GRB_altitude= MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER 
Global Robotic 
Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) 
= 03h 22m 52.70s -48d 29m 10.9s  on
  2016-11-19 21:17:17.878UT with unfiltered m_OT=17.8 (mlim=19.7).

This OT is seen on 6 sequential images ( 180s expositions), from 
2016-11-19 21:07:11 to 2016-11-19 21:20:34 with m_lim=19.8 on single and 
20.7 on summary images with m_OT=17.8

There is no OT on 2016-11-18 21:14:00UT with unfiltered mlim=20.3 and on 
2016-11-20 22:48:44UT with mlim=19.8

There is no any sources in VIZIER database outside.

Spectral observations are required.
The discovery and reference images are available at:

http://master.sai.msu.ru/static/OT/032252.81-482912.8.png

The observations made on zenit distance = 40 degrees, galaxy latitude b = 
-56 degree.
The moon (67 % bright part) below the horizon (The altitude of the Moon is 
-44 degree ).
Observations started at twilight.
The sun  altitude  is -14.2 degree.
The object can be observed till sunrise at 2016-11-20 03:24:39

The message may be cited.