TITLE:   GCN CIRCULAR
NUMBER:  36790
SUBJECT: Fermi GRB 240629A: Global MASTER-Net observations report
DATE:    24/06/29 18:45:51 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, V.Senik,  D. Vlasenko,
G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij
(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. Gress, N.M. Budnev, O.Ershova
(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),

V. Yurkov, A. Gabovich
(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 GRB 240629A ( Fermi GBM team, GCN 36786) errorbox  3278 sec after notice time and 3311 sec after trigger time at 2024-06-29 17:49:04 UT, with upper limit up to  15.4 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -25.7 deg. 

The galactic latitude b = -41 deg., longitude l =  4 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2512867

We obtain a following upper limits.  

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

    3342 | 2024-06-29 17:49:04 |         MASTER-SAAO | (20h 42m 14.15s , -40d 38m 12.5s) |   C |    60 | 15.4 |        
    4274 | 2024-06-29 18:04:36 |         MASTER-SAAO | (20h 42m 16.65s , -40d 39m 00.0s) |   C |    60 | 14.7 |        
    4512 | 2024-06-29 18:08:35 |         MASTER-SAAO | (20h 43m 44.62s , -36d 52m 01.5s) |   C |    60 | 12.7 |        
    4751 | 2024-06-29 18:12:33 |         MASTER-SAAO | (20h 37m 14.45s , -38d 45m 36.9s) |   C |    60 | 15.0 |        
    4910 | 2024-06-29 18:15:12 |         MASTER-SAAO | (20h 51m 47.88s , -40d 38m 24.9s) |   C |    60 | 14.1 |        
    5227 | 2024-06-29 18:20:30 |         MASTER-SAAO | (20h 42m 13.74s , -40d 38m 12.0s) |   C |    60 | 12.8 |        
    5782 | 2024-06-29 18:29:44 |         MASTER-SAAO | (20h 37m 14.76s , -38d 45m 58.6s) |   C |    60 | 12.1 |        
Filter C is a clear (unfiltred) band. 


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