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GCN Circular 32236

Subject
Fermi trigger No 677377371: Global MASTER-Net observations report
Date
2022-06-20T08:15:18Z (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 GRB220620.02 (trigger No 677377371,09h 30m 31.20s , +58d 41m 24.0s, R=9.23) errorbox  25388 sec after notice time and 25424 sec after trigger time at 2022-06-20 07:26:30 UT, with upper limit up to  18.0 mag. The observations began at zenith distance = 79 deg. The sun  altitude  is -35.5 deg. 

The galactic latitude b = 44 deg., longitude l = 156 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2010931

We obtain a following upper limits.  

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

   25454 | 2022-06-20 07:26:30 |         MASTER-OAGH | (09h 44m 35.04s , +58d 11m 50.7s) |   C |    60 | 16.7 |        
   25454 | 2022-06-20 07:26:30 |         MASTER-OAGH | (09h 43m 37.55s , +58d 40m 26.0s) |   C |    60 | 16.1 |        
   26190 | 2022-06-20 07:38:45 |         MASTER-OAGH | (09h 58m 19.20s , +58d 11m 24.6s) |   C |    60 | 17.5 |        
   26190 | 2022-06-20 07:38:45 |         MASTER-OAGH | (09h 57m 18.04s , +58d 38m 38.6s) |   C |    60 | 17.8 |        
   26271 | 2022-06-20 07:40:07 |         MASTER-OAGH | (10h 13m 29.29s , +58d 10m 08.1s) |   C |    60 | 17.7 |        
   26271 | 2022-06-20 07:40:07 |         MASTER-OAGH | (10h 12m 28.71s , +58d 37m 14.2s) |   C |    60 | 17.8 |        
   26353 | 2022-06-20 07:41:28 |         MASTER-OAGH | (10h 01m 54.00s , +60d 04m 39.0s) |   C |    60 | 17.8 |        
   26353 | 2022-06-20 07:41:28 |         MASTER-OAGH | (10h 00m 49.70s , +60d 31m 51.6s) |   C |    60 | 18.0 |        
   26434 | 2022-06-20 07:42:49 |         MASTER-OAGH | (10h 17m 57.01s , +60d 05m 39.4s) |   C |    60 | 18.0 |        
   26434 | 2022-06-20 07:42:49 |         MASTER-OAGH | (10h 16m 53.48s , +60d 32m 43.3s) |   C |    60 | 17.9 |        
   27250 | 2022-06-20 07:56:26 |         MASTER-OAGH | (10h 13m 25.16s , +58d 11m 36.2s) |   C |    60 | 17.5 |        
   27250 | 2022-06-20 07:56:26 |         MASTER-OAGH | (10h 12m 24.38s , +58d 38m 44.2s) |   C |    60 | 17.7 |        
   27332 | 2022-06-20 07:57:47 |         MASTER-OAGH | (10h 02m 00.72s , +60d 04m 32.4s) |   C |    60 | 17.6 |        
   27332 | 2022-06-20 07:57:47 |         MASTER-OAGH | (10h 00m 56.36s , +60d 31m 47.6s) |   C |    60 | 17.8 |        
   27413 | 2022-06-20 07:59:08 |         MASTER-OAGH | (10h 17m 55.90s , +60d 03m 30.9s) |   C |    60 | 17.6 |        
   27413 | 2022-06-20 07:59:08 |         MASTER-OAGH | (10h 16m 52.26s , +60d 30m 38.4s) |   C |    60 | 17.6 |        
Filter C is a clear (unfiltred) band. 


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