TITLE:   GCN CIRCULAR
NUMBER:  26032
SUBJECT: GRB 191019A: MASTER optical observation
DATE:    19/10/19 15:46:07 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>

V. Lipunov, N.Tiurina, E. Gorbovskoy, V.Kornilov, F.Balakin,P.Balanutsa,A.Kuznetsov, V.Vladimirov, D. Vlasenko, I.Gorbunov,
D.Zimnukhov,V.Senik, T.Pogrosheva, K.Pozdnyakov,A.Chasovnikov, V.Topolev, D.Kuvshinov(Lomonosov Moscow State University, SAI,Physics Department),
R. Podesta, C.Lopez, F. Podesta, C.Francile(Observatorio Astronomico FelixAguilar 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 StateUniversity)


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, v.2010, 30L)
started Swift GRB191019A (Simpson et al. GCN26031 , BAT, RA,Dec= RA(J2000)  =  22h 40m 09s, -17d 19' 59")
observations at  2019-10-19 15:13:14Ut with exp. 10s, but sun altitude=-10.
The first image with mlim=15.0 made at 2019-10-19 15:23:59UT.

Real time updated cover map and possibly OT, that can be discovered, 
will be available here:
https://master.sai.msu.ru/site/master2/event.php?id=1171578


The observation and reduction will be continued.
The message may be cited.