[vsnet-grb-info 24585] Fermi-LAT ANTARES coincidence /ANTARES alert 200108.39: MASTER alert and inspect observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26684
SUBJECT: Fermi-LAT ANTARES coincidence /ANTARES alert 200108.39: MASTER alert and inspect observation 
DATE:    20/01/09 12:35:13 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, O.Gress, V.Kornilov, N.Tyurina,P.Balanutsa,A.Kuznetsov,
V. Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D. Kuvshinov, F.Balakin (Lomonosov Moscow State University, SAI, Physics Department),
D. Buckley(South African Astronomical Observatory),
R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
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),
O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API),
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,v. 2010, 30L)
started alert observations of ANTARES alert 200108.39 (FermiLAT ANTARES GCN 26674)
21 sec after notice time (31 sec after trigger time) at 2020-01-08 09:25:43 UT.

We also have images 9h,11h and 14h befor ANTARES alerts (MASTER LVC inspect survey).
and MASTER observed this error-box at MASTER-Amur,-Kislovodsk,-IAC,-SAAO during 2020-01-08 15:41:24-23:36:23UT

https://master.sai.msu.ru/site/master2/event.php?id=1254160

Optical observations and analysis proceed.

MASTER-Amur robotic telescope, located in Russia (Blagoveshchensk State Pedagogical University)
started alert observations of   ANTARES Alert200108.39 21 sec after notice time (31 sec after trigger time) at 2020-01-08 09:25:43 UT.
We started 180s exposure set.
The galactic latitude b = -60 deg., longitude l = 202 deg.
The observations made on zenith distance = 72 deg.
The moon (93 % bright part) is  35 deg. above the horizont. The distance between  moon and  object is 50deg.
The sun  altitude  was -15.5 deg. (twilight)

MASTER-Kislovodsk started inspect of  ANTARES Alert200108.39 at 2020-01-08 15:41:24UT.
Error-box_center_Altitude was 26deg, Sun_altitude was -20deg.

MASTER-SAAO started inspect of  ANTARES Alert200108.39 at 2020-01-08 20:35:58UT
Error-box_center_Altitude was 56deg, Sun_altitude was -27deg.

MASTER-IAC started inspect of  ANTARES Alert200108.39 at 2020-01-08 22:20:00UT
Error-box_center_Altitude was 38deg, Sun_altitude was -51deg.