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GCN Circular 30052

Subject
Fermi trigger No 643065622: Global MASTER-Net observations report
Date
2021-05-19T18:52:05Z (3 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-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB210518.89 (trigger No 643065622,12h 51m 24.00s , +36d 55m 12.0s, R=6.1) errorbox  57396 sec after notice time and 73903 sec after trigger time at 2021-05-19 17:52:01 UT, with upper limit up to  18.7 mag. Observations started at twilight.  The observations began at zenith distance =  8 deg. The sun  altitude  is -12.8 deg. 

The galactic latitude b = 80 deg., longitude l = 120 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1616502

We obtain a following upper limits.  

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

   67312 | 2021-05-19 16:02:05 |             MASTER- | (12h 54m 26.93s , +35d 09m 00.6s) |   C |    10 | 13.6 |        
   67333 | 2021-05-19 16:02:26 |             MASTER- | (13h 04m 24.07s , +35d 08m 06.0s) |   C |    10 | 14.0 |        
   67352 | 2021-05-19 16:02:46 |             MASTER- | (12h 54m 29.25s , +37d 00m 57.6s) |   C |     5 | 13.0 |        
   67366 | 2021-05-19 16:03:00 |             MASTER- | (13h 04m 41.66s , +37d 01m 36.3s) |   C |     5 | 13.6 |        
   69569 | 2021-05-19 16:39:39 |             MASTER- | (12h 35m 42.17s , +35d 05m 32.6s) |   C |    15 | 14.5 |        
   69595 | 2021-05-19 16:40:04 |             MASTER- | (12h 45m 38.95s , +35d 05m 56.6s) |   C |    15 | 14.7 |        
   69617 | 2021-05-19 16:40:30 |             MASTER- | (12h 54m 26.60s , +35d 07m 41.3s) |   C |    10 | 15.0 |        
   69637 | 2021-05-19 16:40:50 |             MASTER- | (13h 04m 17.39s , +35d 06m 14.1s) |   C |    10 | 14.4 |        
   69657 | 2021-05-19 16:41:10 |             MASTER- | (12h 54m 30.33s , +37d 01m 39.3s) |   C |    10 | 13.0 |        
   69696 | 2021-05-19 16:41:50 |             MASTER- | (12h 35m 14.55s , +37d 01m 31.1s) |   C |     5 | 14.0 |        
   69718 | 2021-05-19 16:42:12 |             MASTER- | (12h 55m 19.02s , +38d 53m 50.5s) |   C |     5 | 13.4 |        
   69736 | 2021-05-19 16:42:31 |             MASTER- | (13h 05m 46.43s , +38d 54m 33.5s) |   C |     5 | 14.7 |        
   69975 | 2021-05-19 16:46:29 |             MASTER- | (12h 38m 58.39s , +31d 18m 42.5s) |   C |     5 | 13.8 |        
   69989 | 2021-05-19 16:46:44 |             MASTER- | (12h 48m 22.83s , +31d 17m 24.5s) |   C |     5 | 14.2 |        
   70005 | 2021-05-19 16:46:59 |             MASTER- | (12h 56m 49.31s , +31d 18m 06.5s) |   C |     5 | 12.6 |        
   70019 | 2021-05-19 16:47:14 |             MASTER- | (13h 06m 13.36s , +31d 19m 15.8s) |   C |     5 | 13.2 |        
   70037 | 2021-05-19 16:47:31 |             MASTER- | (12h 15m 57.29s , +38d 52m 20.6s) |   C |     5 | 14.5 |        
   70055 | 2021-05-19 16:47:50 |             MASTER- | (12h 26m 22.95s , +38d 52m 46.1s) |   C |     5 | 14.1 |        
   70077 | 2021-05-19 16:48:11 |             MASTER- | (13h 00m 00.13s , +42d 41m 46.3s) |   C |     5 | 14.1 |        
   70092 | 2021-05-19 16:48:26 |             MASTER- | (13h 11m 02.34s , +42d 43m 47.8s) |   C |     5 | 14.3 |        
   70243 | 2021-05-19 16:50:58 |             MASTER- | (13h 25m 26.67s , +38d 54m 15.7s) |   C |     5 | 12.5 |        
   70261 | 2021-05-19 16:51:15 |             MASTER- | (12h 16m 06.74s , +36d 58m 27.7s) |   C |     5 | 16.8 |        
   70279 | 2021-05-19 16:51:33 |             MASTER- | (12h 26m 15.18s , +37d 00m 00.8s) |   C |     5 | 16.7 |        
   70299 | 2021-05-19 16:51:53 |             MASTER- | (13h 18m 15.77s , +33d 12m 25.2s) |   C |     5 | 13.0 |        
   70339 | 2021-05-19 16:52:34 |             MASTER- | (12h 30m 25.79s , +31d 16m 11.4s) |   C |     5 | 13.7 |        
   70391 | 2021-05-19 16:53:25 |             MASTER- | (12h 16m 38.82s , +40d 47m 05.2s) |   C |     5 | 17.5 |        
   70406 | 2021-05-19 16:53:41 |             MASTER- | (12h 27m 16.58s , +40d 48m 25.9s) |   C |     5 | 17.6 |        
   70445 | 2021-05-19 16:54:19 |             MASTER- | (12h 29m 17.83s , +42d 40m 49.6s) |   C |     5 | 16.8 |        
   70505 | 2021-05-19 16:55:17 |             MASTER- | (13h 14m 40.64s , +31d 19m 06.1s) |   C |    10 | 14.2 |        
   70547 | 2021-05-19 16:56:00 |             MASTER- | (13h 17m 28.56s , +40d 47m 49.8s) |   C |    10 | 14.0 |        
   70596 | 2021-05-19 16:56:48 |             MASTER- | (12h 42m 22.80s , +44d 36m 36.9s) |   C |    10 | 16.9 |        
   70616 | 2021-05-19 16:57:08 |             MASTER- | (12h 53m 38.77s , +44d 36m 14.4s) |   C |    10 | 15.8 |        
   70636 | 2021-05-19 16:57:29 |             MASTER- | (12h 55m 15.93s , +38d 55m 01.5s) |   C |    10 | 15.1 |        
   70656 | 2021-05-19 16:57:48 |             MASTER- | (13h 05m 42.94s , +38d 54m 14.6s) |   C |    10 | 14.7 |        
   70677 | 2021-05-19 16:58:09 |             MASTER- | (12h 35m 36.79s , +38d 52m 29.6s) |   C |    10 | 14.6 |        
   70697 | 2021-05-19 16:58:29 |             MASTER- | (12h 46m 04.00s , +38d 53m 03.4s) |   C |    10 | 14.6 |        
   70718 | 2021-05-19 16:58:50 |             MASTER- | (12h 55m 13.19s , +33d 12m 35.0s) |   C |    10 | 16.4 |        
   70736 | 2021-05-19 16:59:10 |             MASTER- | (13h 04m 49.90s , +33d 11m 18.9s) |   C |     5 | 16.6 |        
   70754 | 2021-05-19 16:59:27 |             MASTER- | (12h 42m 17.24s , +40d 48m 20.7s) |   C |    10 | 16.3 |        
   70776 | 2021-05-19 16:59:48 |             MASTER- | (12h 36m 53.44s , +33d 11m 13.6s) |   C |    10 | 15.1 |        
   70799 | 2021-05-19 17:00:12 |             MASTER- | (12h 46m 29.49s , +33d 12m 24.2s) |   C |    10 | 15.1 |        
   70825 | 2021-05-19 17:00:37 |             MASTER- | (12h 57m 11.69s , +40d 48m 02.9s) |   C |    10 | 14.7 |        
   70844 | 2021-05-19 17:00:57 |             MASTER- | (13h 07m 46.63s , +40d 47m 16.0s) |   C |    10 | 15.5 |        
   70871 | 2021-05-19 17:01:24 |             MASTER- | (13h 18m 40.45s , +36d 59m 28.1s) |   C |    10 | 12.5 |        
   71070 | 2021-05-19 17:04:42 |             MASTER- | (12h 17m 00.01s , +35d 05m 20.2s) |   C |    10 | 12.7 |        
   71089 | 2021-05-19 17:05:01 |             MASTER- | (12h 26m 50.53s , +35d 04m 03.2s) |   C |    10 | 15.2 |        
   71110 | 2021-05-19 17:05:23 |             MASTER- | (12h 39m 10.75s , +42d 42m 30.4s) |   C |    10 | 14.9 |        
   71132 | 2021-05-19 17:05:46 |             MASTER- | (12h 50m 02.28s , +42d 41m 47.2s) |   C |     5 | 15.6 |        
   71148 | 2021-05-19 17:06:03 |             MASTER- | (12h 23m 25.02s , +33d 11m 37.6s) |   C |     5 | 15.7 |        
   71167 | 2021-05-19 17:06:21 |             MASTER- | (13h 13m 09.18s , +35d 05m 56.4s) |   C |     5 | 15.6 |        
   71182 | 2021-05-19 17:06:36 |             MASTER- | (13h 22m 52.76s , +35d 05m 06.9s) |   C |     5 | 14.9 |        
   71199 | 2021-05-19 17:06:52 |             MASTER- | (13h 15m 02.36s , +38d 53m 21.0s) |   C |    10 | 13.8 |        
   73933 | 2021-05-19 17:52:01 |   MASTER-Kislovodsk | (12h 43m 21.92s , +35d 32m 56.7s) |   C |    60 | 17.1 |        
   73933 | 2021-05-19 17:52:01 |   MASTER-Kislovodsk | (12h 48m 51.64s , +35d 08m 44.7s) |   C |    60 | 17.7 |        
   74093 | 2021-05-19 17:54:41 |   MASTER-Kislovodsk | (13h 02m 16.48s , +37d 28m 01.4s) |   C |    60 | 17.4 |        
   74094 | 2021-05-19 17:54:41 |   MASTER-Kislovodsk | (13h 07m 51.90s , +37d 04m 21.8s) |   C |    60 | 18.0 |        
   74173 | 2021-05-19 17:56:01 |   MASTER-Kislovodsk | (13h 02m 02.81s , +35d 32m 33.4s) |   C |    60 | 18.0 |        
   74173 | 2021-05-19 17:56:01 |   MASTER-Kislovodsk | (13h 07m 30.38s , +35d 08m 45.0s) |   C |    60 | 18.6 |        
   74254 | 2021-05-19 17:57:21 |   MASTER-Kislovodsk | (12h 43m 11.97s , +37d 27m 56.3s) |   C |    60 | 17.8 |        
   74254 | 2021-05-19 17:57:21 |   MASTER-Kislovodsk | (12h 48m 47.93s , +37d 04m 19.0s) |   C |    60 | 18.2 |        
   74334 | 2021-05-19 17:58:41 |   MASTER-Kislovodsk | (13h 03m 22.28s , +39d 21m 23.6s) |   C |    60 | 17.8 |        
   74334 | 2021-05-19 17:58:41 |   MASTER-Kislovodsk | (13h 09m 07.03s , +38d 57m 41.1s) |   C |    60 | 18.3 |        
   74414 | 2021-05-19 18:00:02 |   MASTER-Kislovodsk | (12h 43m 44.50s , +39d 22m 30.2s) |   C |    60 | 17.8 |        
   74414 | 2021-05-19 18:00:02 |   MASTER-Kislovodsk | (12h 49m 29.67s , +38d 58m 50.2s) |   C |    60 | 18.3 |        
   74826 | 2021-05-19 18:06:54 |   MASTER-Kislovodsk | (12h 45m 08.34s , +35d 24m 08.2s) |   C |    60 | 17.9 |        
   74826 | 2021-05-19 18:06:54 |   MASTER-Kislovodsk | (12h 39m 40.08s , +35d 47m 39.1s) |   C |    60 | 18.3 |        
   75075 | 2021-05-19 18:11:02 |   MASTER-Kislovodsk | (13h 07m 51.77s , +37d 04m 53.6s) |   C |    60 | 18.4 |        
   75075 | 2021-05-19 18:11:02 |   MASTER-Kislovodsk | (13h 02m 13.45s , +37d 29m 04.0s) |   C |    60 | 17.7 |        
   75155 | 2021-05-19 18:12:22 |   MASTER-Kislovodsk | (13h 02m 05.74s , +35d 33m 57.9s) |   C |    60 | 18.0 |        
   75155 | 2021-05-19 18:12:22 |   MASTER-Kislovodsk | (13h 07m 35.96s , +35d 09m 45.0s) |   C |    60 | 18.7 |        
   75238 | 2021-05-19 18:13:45 |   MASTER-Kislovodsk | (12h 44m 54.11s , +37d 18m 04.5s) |   C |    60 | 17.8 |        
   75238 | 2021-05-19 18:13:45 |   MASTER-Kislovodsk | (12h 39m 16.38s , +37d 41m 17.3s) |   C |    60 | 18.3 |        
   75323 | 2021-05-19 18:15:10 |   MASTER-Kislovodsk | (13h 03m 27.95s , +39d 21m 41.5s) |   C |    60 | 16.9 |        
   75323 | 2021-05-19 18:15:10 |   MASTER-Kislovodsk | (13h 09m 15.14s , +38d 57m 21.4s) |   C |    60 | 17.6 |        
   75406 | 2021-05-19 18:16:34 |   MASTER-Kislovodsk | (12h 39m 48.45s , +39d 37m 16.6s) |   C |    60 | 15.6 |        
   75406 | 2021-05-19 18:16:34 |   MASTER-Kislovodsk | (12h 45m 36.14s , +39d 13m 50.6s) |   C |    60 | 15.1 |        
   77127 | 2021-05-19 18:45:14 |   MASTER-Kislovodsk | (12h 45m 02.70s , +35d 23m 52.3s) |   C |    60 | 16.9 |        
   77127 | 2021-05-19 18:45:14 |   MASTER-Kislovodsk | (12h 39m 34.29s , +35d 47m 09.7s) |   C |    60 | 17.4 |        
Filter C is a clear (unfiltred) band. 


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