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GCN Circular 25858

Subject
Baksan Neutrino Observatory Alert 190928.37: Global MASTER-Net observations report
Date
2019-09-28T14:22:58Z (5 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, P.Balanutsa, I.Gorbunov, D.Vlasenko, 
V.Vladimirov, A.Kuznetsov,  A. Chasovnikov, V.Topolev, D.Kuvshinov, F.Balakin, V.A. Senik
(Lomonosov Moscow State University, SAI, Physics Department),

V.B. Petkov, M.M. Boliev, A.N. Kurenya,
(Baksan Neutrino Observatory, Institute for Nuclear Research of RAS, Moscow, Russia),

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

D. Buckley 
(South African Astronomical Observatory),

N.M. Budnev, O. Gress,  O.Ershova 
(Applied Physics Institute, Irkutsk State University),

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

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

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

H.Levato 
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE  SJNU)

MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Baksan Neutrino Observatory Alert 190928.37 (23h 45m 36.000s , -21d 12m 00.00s, R=3) errorbox  914 sec after trigger time at 2019-09-28 09:05:33 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenit distance = 69 deg. The sun  altitude  is -16.1 deg. 

The galactic latitude b = -60 deg., longitude l = 98 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1151803

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

    1005 | 2019-09-28 09:05:33 |         MASTER-OAFA | (23h 43m 22.815s , -22d 03m 50.57s) |   C |   180 | 18.3 |        
    1185 | 2019-09-28 09:05:33 |         MASTER-OAFA | (23h 43m 22.807s , -22d 03m 50.49s) |   C |   540 | 18.8 |  Coadd 
    1229 | 2019-09-28 09:09:17 |         MASTER-OAFA | (23h 43m 22.655s , -22d 03m 44.57s) |   C |   180 | 18.1 |        
    1451 | 2019-09-28 09:13:00 |         MASTER-OAFA | (23h 43m 22.437s , -22d 03m 41.21s) |   C |   180 | 18.0 |        
    1673 | 2019-09-28 09:16:41 |         MASTER-OAFA | (23h 43m 22.209s , -22d 03m 39.82s) |   C |   180 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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