[vsnet-grb-info 25413] Baksan Neutrino Observatory Alert 200409.23: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27513
SUBJECT: Baksan Neutrino Observatory Alert 200409.23: Global MASTER-Net observations report 
DATE:    20/04/09 18:21:14 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at 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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the Baksan Neutrino Observatory Alert 200409.23 (trigger No 1637127300,07h 12m 48.00s , -47d 24m 00.0s, R=3) errorbox  40579 sec after notice time and 41481 sec after trigger time at 2020-04-09 17:06:22 UT, with upper limit up to  19.9 mag. Observations started at twilight.  The observations began at zenith distance = 17 deg. The sun  altitude  is -9.6 deg. 

The galactic latitude b = -16 deg., longitude l = 259 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1333183

We obtain a following upper limits.  

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

   41512 | 2020-04-09 17:06:22 |         MASTER-SAAO | (07h 14m 47.80s , -47d 54m 59.4s) |   C |    60 | 17.2 |        
   41514 | 2020-04-09 17:06:23 |         MASTER-SAAO | (07h 04m 15.18s , -47d 56m 20.3s) |   C |    60 | 17.1 |        
   41592 | 2020-04-09 17:07:41 |         MASTER-SAAO | (07h 21m 52.73s , -45d 55m 46.7s) |   C |    60 | 17.6 |        
   41593 | 2020-04-09 17:07:43 |         MASTER-SAAO | (07h 11m 43.07s , -45d 57m 07.0s) |   C |    60 | 17.6 |        
   41872 | 2020-04-09 17:12:21 |         MASTER-SAAO | (07h 14m 49.96s , -47d 56m 39.2s) |   C |    60 | 18.9 |        
   41874 | 2020-04-09 17:12:23 |         MASTER-SAAO | (07h 04m 23.80s , -47d 58m 01.2s) |   C |    60 | 18.7 |        
   41951 | 2020-04-09 17:13:41 |         MASTER-SAAO | (07h 21m 45.62s , -45d 55m 19.5s) |   C |    60 | 18.5 |        
   41953 | 2020-04-09 17:13:43 |         MASTER-SAAO | (07h 11m 42.50s , -45d 56m 41.0s) |   C |    60 | 18.3 |        
   42031 | 2020-04-09 17:15:01 |         MASTER-SAAO | (07h 07m 47.18s , -49d 57m 19.5s) |   C |    60 | 18.8 |        
   42033 | 2020-04-09 17:15:03 |         MASTER-SAAO | (06h 56m 54.98s , -49d 58m 41.8s) |   C |    60 | 18.7 |        
   42111 | 2020-04-09 17:16:20 |         MASTER-SAAO | (07h 06m 34.81s , -43d 55m 45.4s) |   C |    60 | 19.6 |        
   42113 | 2020-04-09 17:16:22 |         MASTER-SAAO | (06h 56m 52.02s , -43d 57m 08.0s) |   C |    60 | 19.4 |        
   42190 | 2020-04-09 17:17:40 |         MASTER-SAAO | (07h 38m 37.74s , -47d 55m 14.4s) |   C |    60 | 19.6 |        
   42192 | 2020-04-09 17:17:42 |         MASTER-SAAO | (07h 28m 11.31s , -47d 56m 33.8s) |   C |    60 | 19.5 |        
   42270 | 2020-04-09 17:18:59 |         MASTER-SAAO | (06h 58m 41.99s , -45d 55m 50.9s) |   C |    60 | 19.9 |        
   42272 | 2020-04-09 17:19:01 |         MASTER-SAAO | (06h 48m 38.51s , -45d 57m 14.1s) |   C |    60 | 19.5 |        
   42549 | 2020-04-09 17:23:39 |         MASTER-SAAO | (07h 07m 43.08s , -49d 57m 25.9s) |   C |    60 | 19.4 |        
   42551 | 2020-04-09 17:23:41 |         MASTER-SAAO | (06h 56m 52.20s , -49d 58m 48.8s) |   C |    60 | 19.2 |        
   42629 | 2020-04-09 17:24:59 |         MASTER-SAAO | (07h 06m 33.42s , -43d 57m 24.5s) |   C |    60 | 19.5 |        
   42631 | 2020-04-09 17:25:01 |         MASTER-SAAO | (06h 56m 51.50s , -43d 58m 47.6s) |   C |    60 | 19.4 |        
   42709 | 2020-04-09 17:26:19 |         MASTER-SAAO | (07h 38m 39.65s , -47d 54m 43.1s) |   C |    60 | 19.4 |        
   42711 | 2020-04-09 17:26:21 |         MASTER-SAAO | (07h 28m 14.49s , -47d 56m 03.1s) |   C |    60 | 19.3 |        
   42789 | 2020-04-09 17:27:39 |         MASTER-SAAO | (06h 58m 43.37s , -45d 57m 53.8s) |   C |    60 | 19.4 |        
   42791 | 2020-04-09 17:27:41 |         MASTER-SAAO | (06h 48m 40.62s , -45d 59m 17.7s) |   C |    60 | 19.1 |        
   42869 | 2020-04-09 17:28:59 |         MASTER-SAAO | (07h 32m 40.81s , -49d 54m 43.5s) |   C |    60 | 19.3 |        
   42871 | 2020-04-09 17:29:01 |         MASTER-SAAO | (07h 21m 50.07s , -49d 56m 03.8s) |   C |    60 | 19.2 |        
   42949 | 2020-04-09 17:30:18 |         MASTER-SAAO | (06h 50m 47.69s , -47d 57m 13.3s) |   C |    60 | 19.5 |        
   43030 | 2020-04-09 17:31:40 |         MASTER-SAAO | (07h 15m 18.84s , -51d 56m 05.4s) |   C |    60 | 19.0 |        
   43108 | 2020-04-09 17:32:58 |         MASTER-SAAO | (07h 28m 48.21s , -43d 55m 52.0s) |   C |    60 | 18.6 |        
   43110 | 2020-04-09 17:33:00 |         MASTER-SAAO | (07h 19m 06.16s , -43d 57m 13.8s) |   C |    60 | 18.3 |        
   43188 | 2020-04-09 17:34:18 |         MASTER-SAAO | (07h 32m 35.62s , -49d 56m 36.4s) |   C |    60 | 18.1 |        
   43190 | 2020-04-09 17:34:20 |         MASTER-SAAO | (07h 21m 44.21s , -49d 57m 57.2s) |   C |    60 | 18.2 |        
   43268 | 2020-04-09 17:35:38 |         MASTER-SAAO | (06h 50m 54.05s , -47d 57m 59.1s) |   C |    60 | 17.9 |        
   43350 | 2020-04-09 17:36:59 |         MASTER-SAAO | (07h 15m 21.00s , -51d 56m 27.2s) |   C |    60 | 17.5 |        
   43429 | 2020-04-09 17:38:19 |         MASTER-SAAO | (07h 19m 03.37s , -43d 57m 56.7s) |   C |    60 | 17.8 |        
Filter C is a clear (unfiltred) band. 


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