TITLE:   GCN CIRCULAR
NUMBER:  32334
SUBJECT: MAXI GRB220706.73: Global MASTER-Net observations report 
DATE:    22/07/07 00:17:32 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 MAXI GRB220706.73 (trigger No 766598157,00h 00m 52.56s , -16d 28m 15.6s, R=1) errorbox 17924 sec after trigger time at 2022-07-06 22:32:09 UT, with upper limit up to  19.0 mag. The observations began at zenith distance = 71 deg. The sun  altitude  is -80.3 deg. 

The galactic latitude b = -74 deg., longitude l = 75 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2024084

We obtain a following upper limits.  

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

   18015 | 2022-07-06 22:32:09 |         MASTER-SAAO | (00h 01m 08.23s , -16d 37m 31.4s) |   C |   180 | 18.2 |        
   18533 | 2022-07-06 22:40:48 |         MASTER-SAAO | (00h 01m 10.85s , -16d 39m 30.3s) |   C |   180 | 18.6 |        
   19542 | 2022-07-06 22:57:37 |         MASTER-SAAO | (00h 01m 07.37s , -16d 40m 01.9s) |   C |   180 | 19.0 |        
   20543 | 2022-07-06 23:14:17 |         MASTER-SAAO | (00h 01m 06.20s , -16d 38m 08.9s) |   C |   180 | 18.9 |        
   20545 | 2022-07-06 23:14:19 |             MASTER- | (23h 55m 03.49s , -16d 16m 28.7s) |   C |   180 | 18.1 |        
   20737 | 2022-07-06 23:17:32 |             MASTER- | (23h 55m 04.59s , -16d 15m 04.9s) |   C |   180 | 18.2 |        
   21179 | 2022-07-06 23:24:54 |             MASTER- | (23h 55m 03.08s , -16d 15m 35.0s) |   C |   180 | 18.3 |        
   21542 | 2022-07-06 23:30:57 |             MASTER- | (23h 55m 04.89s , -16d 16m 38.8s) |   C |   180 | 18.3 |        
   22242 | 2022-07-06 23:42:37 |         MASTER-SAAO | (00h 01m 07.61s , -16d 38m 45.4s) |   C |   180 | 18.8 |        
   22599 | 2022-07-06 23:48:33 |             MASTER- | (23h 55m 02.70s , -16d 13m 38.8s) |   C |   180 | 18.4 |        
   22795 | 2022-07-06 23:51:50 |             MASTER- | (23h 55m 08.23s , -16d 14m 43.7s) |   C |   180 | 18.4 |        
   23293 | 2022-07-07 00:00:08 |             MASTER- | (23h 55m 09.06s , -16d 14m 51.7s) |   C |   180 | 18.4 |        
   23293 | 2022-07-07 00:00:08 |             MASTER- | (00h 03m 13.38s , -16d 22m 24.5s) |   C |   180 | 14.8 |        
Filter C is a clear (unfiltred) band. 


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