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GCN Circular 32234

Subject
Fermi GRB 220620A: Global MASTER-Net observations report
Date
2022-06-20T06:45:20Z (2 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, 
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin
(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
(Irkutsk State University, API),

L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez 
(INAOE, Guillermo Haro Astrophysics Observatory),

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

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


MASTER-OAGH robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Mexico (OAGH National Institute for Astrophysics, Optics and Electronics) started inspect of the Fermi GRB 220620A ( Fermi GBM team, GCN 32229) errorbox  13365 sec after notice time and 13402 sec after trigger time at 2022-06-20 05:15:28 UT, with upper limit up to  17.5 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -27.9 deg. 

The galactic latitude b = 28 deg., longitude l = 149 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2010828

We obtain a following upper limits.  

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

   13432 | 2022-06-20 05:15:28 |         MASTER-OAGH | (07h 10m 12.17s , +67d 39m 37.9s) |   C |    60 | 16.4 |        
   13432 | 2022-06-20 05:15:28 |         MASTER-OAGH | (07h 08m 49.08s , +68d 08m 56.2s) |   C |    60 | 16.9 |        
   13652 | 2022-06-20 05:19:08 |         MASTER-OAGH | (07h 30m 01.63s , +68d 09m 43.1s) |   C |    60 | 16.1 |        
   13652 | 2022-06-20 05:19:08 |         MASTER-OAGH | (07h 31m 15.11s , +67d 41m 43.0s) |   C |    60 | 13.9 |        
   13873 | 2022-06-20 05:22:49 |         MASTER-OAGH | (07h 15m 21.49s , +65d 46m 52.9s) |   C |    60 | 13.8 |        
   13873 | 2022-06-20 05:22:49 |         MASTER-OAGH | (07h 14m 04.15s , +66d 16m 23.8s) |   C |    60 | 15.9 |        
   14358 | 2022-06-20 05:30:54 |         MASTER-OAGH | (07h 34m 52.35s , +65d 46m 12.9s) |   C |    60 | 16.1 |        
   14358 | 2022-06-20 05:30:54 |         MASTER-OAGH | (07h 33m 37.45s , +66d 14m 59.2s) |   C |    60 | 16.4 |        
   14439 | 2022-06-20 05:32:15 |         MASTER-OAGH | (07h 10m 14.90s , +67d 41m 06.8s) |   C |    60 | 14.7 |        
   14439 | 2022-06-20 05:32:15 |         MASTER-OAGH | (07h 08m 52.19s , +68d 10m 24.0s) |   C |    60 | 16.4 |        
   14683 | 2022-06-20 05:36:19 |         MASTER-OAGH | (07h 31m 11.72s , +67d 40m 40.9s) |   C |    60 | 17.0 |        
   14683 | 2022-06-20 05:36:19 |         MASTER-OAGH | (07h 29m 50.03s , +68d 09m 26.4s) |   C |    60 | 16.9 |        
   14801 | 2022-06-20 05:38:17 |         MASTER-OAGH | (07h 15m 19.84s , +65d 47m 17.0s) |   C |    60 | 14.6 |        
   14801 | 2022-06-20 05:38:17 |         MASTER-OAGH | (07h 13m 57.08s , +66d 16m 46.3s) |   C |    60 | 16.2 |        
   14882 | 2022-06-20 05:39:38 |         MASTER-OAGH | (07h 04m 41.49s , +69d 33m 11.2s) |   C |    60 | 15.2 |        
   14882 | 2022-06-20 05:39:38 |         MASTER-OAGH | (07h 03m 10.86s , +70d 02m 25.2s) |   C |    60 | 16.6 |        
   15165 | 2022-06-20 05:44:21 |         MASTER-OAGH | (07h 27m 34.36s , +69d 35m 38.5s) |   C |    60 | 17.1 |        
   15165 | 2022-06-20 05:44:21 |         MASTER-OAGH | (07h 26m 08.83s , +70d 04m 14.5s) |   C |    60 | 17.5 |        
   15353 | 2022-06-20 05:47:29 |         MASTER-OAGH | (07h 50m 12.27s , +67d 41m 54.5s) |   C |    60 | 12.6 |        
   15353 | 2022-06-20 05:47:29 |         MASTER-OAGH | (07h 48m 59.51s , +68d 09m 40.1s) |   C |    60 | 13.0 |        
   16276 | 2022-06-20 06:02:51 |         MASTER-OAGH | (07h 48m 52.51s , +68d 09m 08.6s) |   C |    60 | 12.8 |        
   18478 | 2022-06-20 06:39:34 |         MASTER-OAGH | (07h 34m 44.93s , +65d 46m 15.6s) |   C |    60 | 12.9 |        
   18478 | 2022-06-20 06:39:34 |         MASTER-OAGH | (07h 33m 28.49s , +66d 14m 57.2s) |   C |    60 | 15.4 |        
   18560 | 2022-06-20 06:40:55 |         MASTER-OAGH | (07h 04m 45.02s , +69d 33m 39.3s) |   C |    60 | 15.5 |        
   18560 | 2022-06-20 06:40:55 |         MASTER-OAGH | (07h 03m 10.54s , +70d 03m 13.1s) |   C |    60 | 16.4 |        
Filter C is a clear (unfiltred) band. 


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