[vsnet-grb-info 24079] GRB 191106A: MASTER optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26178
SUBJECT: GRB 191106A: MASTER optical observation 
DATE:    19/11/06 15:10:12 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tiurina,P.Balanutsa,A.Kuznetsov,V.Vladimirov, D. Vlasenko, I.Gorbunov,
D.Zimnukhov, A.Pozdnyakov, E.Minkina, V.Senik (Lomonosov Moscow State University, SAI,Physics Department),
R. Podesta, C.Lopez, F. Podesta, C.Francile(Observatorio Astronomico Felix Aguilar OAFA),
H. Levato(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),
R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias),
D. Buckley(South African Astronomical Observatory),
O.A. Gres, N.M. Budnev, O.Ershova(Irkutsk State University, API),
A. Tlatov, D. Dormidontov(Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich, Yu. Sergienko(Blagoveschensk Educational State University),

MASTER Global Robotic Net (http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)
started Swift GRB 191106A (Marshall et al. GCN 26177) alert observation 19 sec after at 2019-11-06 14:16:03 UT.

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory)
was pointed to the  GRB191106.59 19 sec after notice time (39 sec after trigger time)
  at 2019-11-06 14:16:03 UT at sunset (sun  altitude  is -8.5 deg.).

There is no OT with 5-sigma upper limit  14.0 mag at  2019-11-06 14:38:00UT.

Error-box galactic latitude b = 28 deg., longitude l = 73 deg.
The observations made on zenith distance = 27 deg.The moon (70 % bright part) is 26 deg. above the horizon.
The distance between  moon and  object is 87 deg.
The error-box can be observed till sunrise at 2019-11-07 03:49:40

MASTER-Amur was pointed to GRB 191106A 20 sec after notice time (41s after trigger time) 
at 2019-11-06 14:16:05 UT, but there are clouds.

The message may be cited.