TITLE:   GCN CIRCULAR
NUMBER:  31718
SUBJECT: Fermi GRB 220309A: Global MASTER-Net observations report 
DATE:    22/03/09 06:45:16 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 GRB 220309A ( Fermi GBM team, GCN 31717) errorbox  213 sec after notice time and 221 sec after trigger time at 2022-03-09 06:08:25 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 57 deg. The sun  altitude  is -49.3 deg. 

The galactic latitude b = 38 deg., longitude l = 238 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1905062

We obtain a following upper limits.  

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

     251 | 2022-03-09 06:08:25 |         MASTER-OAFA | (09h 00m 07.82s , -05d 38m 13.1s) |   C |    60 | 18.3 |        
     451 | 2022-03-09 06:11:44 |         MASTER-OAFA | (08h 58m 21.00s , -03d 42m 28.9s) |   C |    60 | 18.3 |        
     649 | 2022-03-09 06:15:03 |         MASTER-OAFA | (09h 02m 29.80s , -07d 32m 16.1s) |   C |    60 | 18.4 |        
     757 | 2022-03-09 06:16:50 |         MASTER-OAFA | (09h 49m 38.47s , +01d 59m 09.4s) |   C |    60 | 18.3 |        
     856 | 2022-03-09 06:18:30 |         MASTER-OAFA | (09h 57m 42.22s , +02d 00m 50.4s) |   C |    60 | 18.5 |        
     956 | 2022-03-09 06:20:09 |         MASTER-OAFA | (09h 49m 30.23s , +00d 06m 46.0s) |   C |    60 | 18.4 |        
    1057 | 2022-03-09 06:21:50 |         MASTER-OAFA | (09h 57m 37.25s , +00d 05m 55.5s) |   C |    60 | 18.3 |        
    1256 | 2022-03-09 06:25:10 |         MASTER-OAFA | (09h 00m 09.29s , -05d 38m 01.8s) |   C |    60 | 18.4 |        
    1456 | 2022-03-09 06:28:29 |         MASTER-OAFA | (08h 58m 24.29s , -03d 44m 13.4s) |   C |    60 | 18.3 |        
    1654 | 2022-03-09 06:31:48 |         MASTER-OAFA | (09h 02m 22.89s , -07d 31m 31.6s) |   C |    60 | 18.4 |        
    1754 | 2022-03-09 06:33:27 |         MASTER-OAFA | (09h 49m 34.41s , +02d 00m 41.6s) |   C |    60 | 18.2 |        
    1854 | 2022-03-09 06:35:07 |         MASTER-OAFA | (09h 57m 42.21s , +01d 59m 52.0s) |   C |    60 | 18.5 |        
    1953 | 2022-03-09 06:36:47 |         MASTER-OAFA | (09h 49m 30.51s , +00d 04m 42.6s) |   C |    60 | 18.2 |        
Filter C is a clear (unfiltred) band. 


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