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GCN Circular 22503

Subject
GRB180316A: MASTER-IAC OT light curve
Date
2018-03-16T07:15:51Z (6 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, N.Tyurina, V.Kornilov, E.Gorbovskoy, P.Balanutsa, V.Vladimirov, 
A.Krylov, I.Gorbunov, A.Kuznetsov, V.Chazov, D. Kuvshinov, D.Zimnukhov
(Lomonosov Moscow State University, SAI),

R. Rebolo, M. Serra-Ricart
(The Instituto de Astrofisica de Canarias),


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),

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


O.Gres,  N.M.Budnev
(Irkutsk State University),

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

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


MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in 
IAC was pointed to the  GRB180316A (Melandri et al GCN22500)
  15 sec after notice time and 44 sec after trigger time at 2018-03-16 04:58:09 
UT .

There is OT(GCN 22502)  as the GRB counterpart  coordinates
(17h 41m 42s.82, + 00d 44m 53s.6 ) 
error =+-0.5"

The automatical OT light curve available at
http://master.sai.msu.ru/static/OT/LC_GRB180316A.png

The message may be cited.


====================================================================



The observations made on zenit distance = 42 degrees, galaxy latitude b = 15 
degree.
The moon ( 2 % bright part) below the horizon (The altitude of the Moon is -22 
degree ).
The sun  altitude  is -30.4 degree.
The object can be observed till sunrise at 2018-03-16 07:14:55
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