[vsnet-grb-info 25370] Fermi GRB 200401A: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27470
SUBJECT: Fermi GRB 200401A: Global MASTER-Net observations report 
DATE:    20/04/01 12:30:16 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, 
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D.Kuvshinov,  D. Cheryasov
(Lomonosov Moscow State University, SAI, Physics Department),

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),

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

D. Buckley 
(South African Astronomical Observatory),

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

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

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




MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB 200401A ( Fermi GBM team, GCN 27469) errorbox  15214 sec after notice time and 15242 sec after trigger time at 2020-04-01 11:14:30 UT, with upper limit up to  17.5 mag. Observations started at twilight.  The observations began at zenith distance = 34 deg. The sun  altitude  is -12.0 deg. 

The galactic latitude b = 37 deg., longitude l = 216 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1327489

We obtain a following upper limits.  

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

   15272 | 2020-04-01 11:14:30 |         MASTER-Amur | (09h 27m 57.60s , +18d 03m 51.2s) |   C |    60 | 17.2 |        
   15352 | 2020-04-01 11:15:50 |         MASTER-Amur | (09h 21m 55.66s , +16d 03m 03.0s) |   C |    60 | 17.2 |        
   15431 | 2020-04-01 11:17:09 |         MASTER-Amur | (09h 38m 32.22s , +16d 03m 05.9s) |   C |    60 | 17.1 |        
   15510 | 2020-04-01 11:18:29 |         MASTER-Amur | (09h 34m 43.85s , +20d 03m 44.3s) |   C |    60 | 17.2 |        
   15590 | 2020-04-01 11:19:48 |         MASTER-Amur | (09h 27m 53.86s , +18d 04m 43.8s) |   C |    60 | 17.2 |        
   15669 | 2020-04-01 11:21:08 |         MASTER-Amur | (09h 36m 23.78s , +18d 03m 45.9s) |   C |    60 | 17.2 |        
   15750 | 2020-04-01 11:22:28 |         MASTER-Amur | (09h 21m 51.89s , +16d 02m 42.0s) |   C |    60 | 17.2 |        
   15829 | 2020-04-01 11:23:47 |         MASTER-Amur | (09h 30m 15.73s , +16d 02m 54.4s) |   C |    60 | 17.2 |        
   15909 | 2020-04-01 11:25:07 |         MASTER-Amur | (09h 38m 32.58s , +16d 04m 21.2s) |   C |    60 | 17.0 |        
   15988 | 2020-04-01 11:26:27 |         MASTER-Amur | (09h 46m 51.33s , +16d 03m 13.6s) |   C |    60 | 17.1 |        
   16073 | 2020-04-01 11:27:51 |         MASTER-Amur | (09h 34m 51.09s , +20d 04m 22.2s) |   C |    60 | 17.2 |        
   16157 | 2020-04-01 11:29:16 |         MASTER-Amur | (09h 43m 14.92s , +20d 03m 41.7s) |   C |    60 | 17.1 |        
   16247 | 2020-04-01 11:30:46 |         MASTER-Amur | (09h 36m 16.97s , +18d 04m 42.1s) |   C |    60 | 17.0 |        
   16329 | 2020-04-01 11:32:07 |         MASTER-Amur | (09h 30m 16.05s , +16d 03m 41.8s) |   C |    60 | 17.3 |        
   16408 | 2020-04-01 11:33:27 |         MASTER-Amur | (09h 46m 49.85s , +16d 02m 47.4s) |   C |    60 | 17.1 |        
   16488 | 2020-04-01 11:34:46 |         MASTER-Amur | (09h 43m 22.30s , +20d 03m 01.8s) |   C |    60 | 17.1 |        
   16568 | 2020-04-01 11:36:06 |         MASTER-Amur | (09h 33m 10.02s , +14d 03m 12.4s) |   C |    60 | 17.0 |        
   16648 | 2020-04-01 11:37:26 |         MASTER-Amur | (09h 44m 43.16s , +18d 03m 42.5s) |   C |    60 | 17.1 |        
   16727 | 2020-04-01 11:38:46 |         MASTER-Amur | (09h 16m 44.38s , +14d 03m 37.6s) |   C |    60 | 17.1 |        
   16807 | 2020-04-01 11:40:05 |         MASTER-Amur | (09h 25m 21.07s , +22d 02m 48.1s) |   C |    60 | 17.2 |        
   16886 | 2020-04-01 11:41:25 |         MASTER-Amur | (09h 33m 10.23s , +14d 04m 26.8s) |   C |    60 | 17.3 |        
   16966 | 2020-04-01 11:42:44 |         MASTER-Amur | (09h 41m 25.07s , +14d 02m 50.0s) |   C |    60 | 17.3 |        
   17046 | 2020-04-01 11:44:04 |         MASTER-Amur | (09h 44m 49.15s , +18d 04m 25.7s) |   C |    60 | 17.2 |        
   17126 | 2020-04-01 11:45:24 |         MASTER-Amur | (09h 53m 07.25s , +18d 03m 44.0s) |   C |    60 | 17.2 |        
   17205 | 2020-04-01 11:46:44 |         MASTER-Amur | (09h 16m 37.55s , +14d 04m 36.2s) |   C |    60 | 17.1 |        
   17285 | 2020-04-01 11:48:03 |         MASTER-Amur | (09h 24m 58.46s , +14d 03m 38.1s) |   C |    60 | 17.3 |        
   17364 | 2020-04-01 11:49:23 |         MASTER-Amur | (09h 25m 15.33s , +22d 02m 27.2s) |   C |    60 | 17.2 |        
   17444 | 2020-04-01 11:50:42 |         MASTER-Amur | (09h 33m 59.19s , +22d 02m 42.0s) |   C |    60 | 17.4 |        
   17523 | 2020-04-01 11:52:02 |         MASTER-Amur | (09h 41m 25.38s , +14d 04m 44.0s) |   C |    60 | 17.3 |        
   17612 | 2020-04-01 11:53:30 |         MASTER-Amur | (09h 53m 10.41s , +18d 02m 47.9s) |   C |    60 | 17.2 |        
   17692 | 2020-04-01 11:54:50 |         MASTER-Amur | (09h 24m 59.64s , +14d 04m 30.5s) |   C |    60 | 17.4 |        
   17771 | 2020-04-01 11:56:09 |         MASTER-Amur | (09h 33m 54.25s , +22d 03m 29.0s) |   C |    60 | 17.5 |        
   17851 | 2020-04-01 11:57:29 |         MASTER-Amur | (09h 28m 38.48s , +12d 03m 39.5s) |   C |    60 | 17.0 |        
   17930 | 2020-04-01 11:58:48 |         MASTER-Amur | (09h 42m 38.34s , +22d 02m 46.8s) |   C |    60 | 17.3 |        
   18009 | 2020-04-01 12:00:08 |         MASTER-Amur | (09h 51m 49.87s , +20d 02m 50.8s) |   C |    60 | 17.2 |        
   18096 | 2020-04-01 12:01:34 |         MASTER-Amur | (09h 49m 37.22s , +14d 03m 45.2s) |   C |    60 | 17.2 |        
   18175 | 2020-04-01 12:02:54 |         MASTER-Amur | (09h 28m 32.57s , +12d 04m 39.1s) |   C |    60 | 17.2 |        
   18255 | 2020-04-01 12:04:13 |         MASTER-Amur | (09h 36m 47.63s , +12d 03m 40.5s) |   C |    60 | 17.1 |        
   18334 | 2020-04-01 12:05:32 |         MASTER-Amur | (09h 42m 31.26s , +22d 02m 30.6s) |   C |    60 | 17.2 |        
   18413 | 2020-04-01 12:06:52 |         MASTER-Amur | (09h 51m 15.35s , +22d 02m 59.2s) |   C |    60 | 17.5 |        
   18493 | 2020-04-01 12:08:11 |         MASTER-Amur | (09h 51m 51.16s , +20d 04m 13.2s) |   C |    60 | 17.2 |        
   18572 | 2020-04-01 12:09:31 |         MASTER-Amur | (10h 00m 21.49s , +20d 03m 01.2s) |   C |    60 | 17.3 |        
   18652 | 2020-04-01 12:10:50 |         MASTER-Amur | (09h 49m 42.15s , +14d 04m 43.5s) |   C |    60 | 17.3 |        
   18732 | 2020-04-01 12:12:10 |         MASTER-Amur | (09h 57m 52.00s , +14d 03m 45.9s) |   C |    60 | 17.5 |        
   18811 | 2020-04-01 12:13:29 |         MASTER-Amur | (09h 36m 42.00s , +12d 04m 39.9s) |   C |    60 | 17.1 |        
   18891 | 2020-04-01 12:14:49 |         MASTER-Amur | (09h 51m 16.93s , +22d 03m 31.6s) |   C |    60 | 17.4 |        
   18999 | 2020-04-01 12:16:38 |         MASTER-Amur | (10h 00m 18.41s , +20d 02m 37.0s) |   C |    60 | 17.1 |        
   19079 | 2020-04-01 12:17:57 |         MASTER-Amur | (09h 57m 57.86s , +14d 03m 08.8s) |   C |    60 | 17.3 |        
   19160 | 2020-04-01 12:19:18 |         MASTER-Amur | (09h 55m 13.22s , +16d 02m 50.8s) |   C |    60 | 17.1 |        
   19240 | 2020-04-01 12:20:38 |         MASTER-Amur | (09h 44m 54.12s , +12d 03m 39.8s) |   C |    60 | 16.8 |        
   19329 | 2020-04-01 12:22:08 |         MASTER-Amur | (09h 11m 44.18s , +11d 57m 32.4s) |   C |    60 | 16.7 |        
Filter C is a clear (unfiltred) band. 


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