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GCN Circular 28262

Subject
Baksan Neutrino Observatory Alert 200819.09: Global MASTER-Net observations report
Date
2020-08-19T03:21:08Z (4 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 200819.09 (trigger No 1648520072,16h 13m 12.00s , -01d 18m 00.0s, R=3) errorbox  353 sec after notice time and 685 sec after trigger time at 2020-08-19 02:25:57 UT, with upper limit up to  18.7 mag. The observations began at zenith distance = 57 deg. The sun  altitude  is -54.5 deg. 

The galactic latitude b = 33 deg., longitude l = 11 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1422364

We obtain a following upper limits.  

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

     715 | 2020-08-19 02:25:57 |         MASTER-OAFA | (16h 11m 13.22s , -02d 39m 15.1s) |   C |    60 | 18.7 |        
     795 | 2020-08-19 02:27:17 |         MASTER-OAFA | (16h 10m 43.53s , -00d 39m 12.9s) |   C |    60 | 18.6 |        
    1281 | 2020-08-19 02:35:23 |         MASTER-OAFA | (16h 11m 16.05s , -02d 38m 23.8s) |   C |    60 | 18.7 |        
    1361 | 2020-08-19 02:36:43 |         MASTER-OAFA | (16h 19m 16.26s , -02d 40m 04.4s) |   C |    60 | 18.5 |        
    1441 | 2020-08-19 02:38:02 |         MASTER-OAFA | (16h 10m 43.32s , -00d 38m 21.5s) |   C |    60 | 18.6 |        
    1523 | 2020-08-19 02:39:25 |         MASTER-OAFA | (16h 18m 38.25s , -00d 39m 21.4s) |   C |    60 | 18.4 |        
    1603 | 2020-08-19 02:40:45 |         MASTER-OAFA | (16h 13m 05.09s , -04d 39m 09.9s) |   C |    60 | 18.4 |        
    1895 | 2020-08-19 02:45:36 |         MASTER-OAFA | (16h 19m 19.52s , -02d 40m 21.2s) |   C |    60 | 18.1 |        
    1974 | 2020-08-19 02:46:56 |         MASTER-OAFA | (16h 18m 40.53s , -00d 38m 46.2s) |   C |    60 | 18.4 |        
    2054 | 2020-08-19 02:48:16 |         MASTER-OAFA | (16h 13m 01.63s , -04d 39m 50.1s) |   C |    60 | 18.6 |        
    2134 | 2020-08-19 02:49:35 |         MASTER-OAFA | (16h 21m 04.87s , -04d 38m 39.6s) |   C |    60 | 18.6 |        
    2217 | 2020-08-19 02:50:59 |         MASTER-OAFA | (16h 11m 12.97s , +01d 21m 49.7s) |   C |    60 | 18.5 |        
    2297 | 2020-08-19 02:52:19 |         MASTER-OAFA | (15h 54m 36.89s , -00d 39m 41.8s) |   C |    60 | 18.6 |        
    2377 | 2020-08-19 02:53:38 |         MASTER-OAFA | (15h 55m 14.04s , -02d 37m 58.1s) |   C |    60 | 18.7 |        
    2456 | 2020-08-19 02:54:58 |         MASTER-OAFA | (16h 21m 02.57s , -04d 39m 52.7s) |   C |    60 | 18.5 |        
    2536 | 2020-08-19 02:56:18 |         MASTER-OAFA | (16h 11m 20.40s , +01d 21m 29.1s) |   C |    60 | 18.5 |        
    2616 | 2020-08-19 02:57:38 |         MASTER-OAFA | (16h 19m 14.32s , +01d 20m 39.3s) |   C |    60 | 18.3 |        
    2696 | 2020-08-19 02:58:57 |         MASTER-OAFA | (15h 54m 35.87s , -00d 37m 39.4s) |   C |    60 | 18.5 |        
    2775 | 2020-08-19 03:00:17 |         MASTER-OAFA | (16h 02m 43.94s , -00d 38m 52.2s) |   C |    60 | 18.7 |        
    2855 | 2020-08-19 03:01:37 |         MASTER-OAFA | (15h 55m 10.87s , -02d 39m 36.3s) |   C |    60 | 18.5 |        
    2937 | 2020-08-19 03:02:58 |         MASTER-OAFA | (16h 03m 16.72s , -02d 39m 25.7s) |   C |    60 | 18.7 |        
    3016 | 2020-08-19 03:04:18 |         MASTER-OAFA | (16h 19m 16.65s , +01d 21m 11.8s) |   C |    60 | 18.3 |        
    3096 | 2020-08-19 03:05:38 |         MASTER-OAFA | (16h 02m 39.78s , -00d 39m 21.8s) |   C |    60 | 18.4 |        
    3255 | 2020-08-19 03:08:17 |         MASTER-OAFA | (16h 03m 11.14s , -02d 37m 47.7s) |   C |    60 | 18.4 |        
    3414 | 2020-08-19 03:10:56 |         MASTER-OAFA | (16h 26m 40.28s , -00d 38m 36.2s) |   C |    60 | 18.3 |        
    3574 | 2020-08-19 03:13:35 |         MASTER-OAFA | (16h 05m 01.25s , -04d 38m 13.6s) |   C |    60 | 17.9 |        
    3733 | 2020-08-19 03:16:15 |         MASTER-OAFA | (16h 03m 12.95s , +01d 22m 04.5s) |   C |    60 | 17.6 |        
Filter C is a clear (unfiltred) band. 


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