TITLE:   GCN CIRCULAR
NUMBER:  32226
SUBJECT: Fermi  trigger No 677307509: Global MASTER-Net observations report 
DATE:    22/06/19 09:30:14 GMT
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-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 GRB220619.21 (trigger No 677307509,02h 50m 31.20s , -02d 19m 12.0s, R=1.21) errorbox  14241 sec after notice time and 14278 sec after trigger time at 2022-06-19 08:56:23 UT, with upper limit up to  17.0 mag. The observations began at zenith distance = 69 deg. The sun  altitude  is -32.4 deg. 

The galactic latitude b = -52 deg., longitude l = 177 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2010147

We obtain a following upper limits.  

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

   14309 | 2022-06-19 08:56:23 |         MASTER-OAFA | (02h 41m 54.52s , -03d 22m 39.1s) |   C |    60 | 16.9 |        
   14400 | 2022-06-19 08:57:55 |         MASTER-OAFA | (02h 49m 49.25s , -03d 23m 28.7s) |   C |    60 | 16.7 |        
   14918 | 2022-06-19 09:06:32 |         MASTER-OAFA | (02h 41m 45.61s , -01d 27m 40.8s) |   C |    60 | 16.7 |        
   15009 | 2022-06-19 09:08:03 |         MASTER-OAFA | (02h 49m 39.17s , -01d 28m 26.9s) |   C |    60 | 16.8 |        
   15192 | 2022-06-19 09:11:06 |         MASTER-OAFA | (02h 50m 11.24s , -05d 17m 28.1s) |   C |    60 | 17.0 |        
   15285 | 2022-06-19 09:12:39 |         MASTER-OAFA | (02h 41m 55.32s , -03d 23m 22.3s) |   C |    60 | 17.0 |        
   15377 | 2022-06-19 09:14:11 |         MASTER-OAFA | (02h 49m 53.15s , -03d 21m 36.8s) |   C |    60 | 16.8 |        
   15772 | 2022-06-19 09:20:46 |         MASTER-OAFA | (02h 49m 40.31s , +00d 26m 31.5s) |   C |    60 | 16.9 |        
Filter C is a clear (unfiltred) band. 


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