TITLE:   GCN CIRCULAR
NUMBER:  32187
SUBJECT: Fermi  trigger No 676537486: Global MASTER-Net observations report 
DATE:    22/06/10 16:45:28 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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB220610.29 (trigger No 676537486,15h 18m 33.60s , -57d 48m 00.0s, R=3.12) errorbox  8827 sec after notice time and 33635 sec after trigger time at 2022-06-10 16:25:17 UT, with upper limit up to  16.8 mag. Observations started at twilight.  The observations began at zenith distance = 50 deg. The sun  altitude  is -9.4 deg. 

The galactic latitude b = -1 deg., longitude l = 322 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2002453

We obtain a following upper limits.  

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

   33666 | 2022-06-10 16:25:17 |         MASTER-SAAO | (15h 16m 06.73s , -57d 45m 54.6s) |   C |    60 | 16.4 |        
   33746 | 2022-06-10 16:26:37 |         MASTER-SAAO | (15h 10m 45.84s , -55d 50m 06.0s) |   C |    60 | 16.5 |        
   33840 | 2022-06-10 16:28:12 |         MASTER-SAAO | (15h 24m 59.72s , -55d 51m 50.4s) |   C |    60 | 16.8 |        
   33930 | 2022-06-10 16:29:42 |         MASTER-SAAO | (15h 21m 36.56s , -59d 38m 59.4s) |   C |    60 | 16.2 |        
Filter C is a clear (unfiltred) band. 


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