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GCN Circular 28462

Subject
Fermi GRB 200919C: Global MASTER-Net observations report
Date
2020-09-20T00:30:24Z (4 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@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),

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-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 Fermi GRB 200919C ( Fermi GBM team, GCN 28461) errorbox  92 sec after notice time and 120 sec after trigger time at 2020-09-19 23:10:23 UT, with upper limit up to  17.6 mag. Observations started at twilight.  The observations began at zenith distance =  9 deg. The sun  altitude  is -9.6 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 200919C errorbox  119 sec after notice time and 147 sec after trigger time at 2020-09-19 23:10:50 UT, with upper limit up to  14.2 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -57.8 deg. 

The galactic latitude b = -3 deg., longitude l =  8 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1444890

We obtain a following upper limits.  

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

     131 | 2020-09-19 23:10:23 |         MASTER-OAFA | (18h 19m 08.51s , -22d 37m 56.3s) |   C |    20 | 15.9 |        
     162 | 2020-09-19 23:10:50 |         MASTER-SAAO | (18h 19m 36.27s , -22d 32m 15.4s) |   C |    30 | 12.7 |        
     175 | 2020-09-19 23:11:02 |         MASTER-OAFA | (18h 15m 37.21s , -23d 14m 33.1s) |   C |    30 | 16.2 |        
     220 | 2020-09-19 23:11:02 |         MASTER-OAFA | (18h 15m 37.22s , -23d 14m 33.0s) |   C |   120 | 16.7 |  Coadd 
     217 | 2020-09-19 23:11:39 |         MASTER-SAAO | (18h 19m 42.17s , -22d 33m 13.2s) |   C |    40 | 14.2 |        
     230 | 2020-09-19 23:11:52 |         MASTER-OAFA | (18h 15m 40.83s , -23d 12m 39.1s) |   C |    40 | 16.3 |        
     281 | 2020-09-19 23:12:38 |         MASTER-SAAO | (18h 19m 37.00s , -22d 34m 10.9s) |   C |    50 | 13.8 |        
     294 | 2020-09-19 23:12:51 |         MASTER-OAFA | (18h 15m 33.60s , -23d 13m 34.7s) |   C |    50 | 16.5 |        
     356 | 2020-09-19 23:13:48 |         MASTER-SAAO | (18h 19m 41.80s , -22d 33m 51.0s) |   C |    60 | 13.8 |        
     374 | 2020-09-19 23:14:01 |         MASTER-OAFA | (18h 15m 34.31s , -23d 12m 34.4s) |   C |    70 | 16.6 |        
     464 | 2020-09-19 23:14:01 |         MASTER-OAFA | (18h 15m 34.30s , -23d 12m 34.4s) |   C |   250 | 17.0 |  Coadd 
     445 | 2020-09-19 23:15:08 |         MASTER-SAAO | (18h 19m 38.75s , -22d 32m 04.7s) |   C |    80 | 12.7 |        
     469 | 2020-09-19 23:15:31 |         MASTER-OAFA | (18h 15m 40.04s , -23d 13m 34.7s) |   C |    80 | 16.8 |        
     555 | 2020-09-19 23:16:47 |         MASTER-SAAO | (18h 19m 38.69s , -22d 33m 57.1s) |   C |   100 | 13.6 |        
     578 | 2020-09-19 23:17:10 |         MASTER-OAFA | (18h 15m 33.16s , -23d 14m 34.6s) |   C |   100 | 16.9 |        
     685 | 2020-09-19 23:18:47 |         MASTER-SAAO | (18h 16m 01.39s , -23d 13m 46.8s) |   C |   120 | 12.1 |        
     712 | 2020-09-19 23:19:10 |         MASTER-OAFA | (18h 11m 58.22s , -23d 56m 21.3s) |   C |   130 | 17.3 |        
     882 | 2020-09-19 23:19:10 |         MASTER-OAFA | (18h 11m 58.22s , -23d 56m 21.3s) |   C |   470 | 17.5 |  Coadd 
     839 | 2020-09-19 23:21:06 |         MASTER-SAAO | (18h 15m 54.46s , -23d 14m 35.1s) |   C |   150 | 12.5 |        
     877 | 2020-09-19 23:21:39 |         MASTER-OAFA | (18h 11m 55.67s , -23d 54m 35.7s) |   C |   160 | 17.4 |        
    1024 | 2020-09-19 23:23:56 |         MASTER-SAAO | (18h 15m 53.68s , -23d 13m 25.4s) |   C |   180 | 12.3 |        
    1066 | 2020-09-19 23:24:39 |         MASTER-OAFA | (18h 11m 55.63s , -23d 56m 13.8s) |   C |   180 | 17.5 |        
    1266 | 2020-09-19 23:27:58 |         MASTER-OAFA | (18h 11m 58.50s , -23d 54m 40.9s) |   C |   180 | 17.6 |        
    1465 | 2020-09-19 23:31:18 |         MASTER-OAFA | (18h 11m 52.71s , -23d 55m 31.2s) |   C |   180 | 17.5 |        
    1665 | 2020-09-19 23:34:37 |         MASTER-OAFA | (18h 11m 51.61s , -23d 54m 31.9s) |   C |   180 | 17.2 |        
Filter C is a clear (unfiltred) band. 


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