TITLE:   GCN CIRCULAR
NUMBER:  35995
SUBJECT: Fermi GRB 240329A: Global MASTER-Net observations report
DATE:    24/03/29 22:15:55 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 240329A ( Fermi GBM team, GCN 35993) errorbox  567 sec after notice time and 601 sec after trigger time at 2024-03-29 21:53:08 UT, with upper limit up to  16.5 mag. The observations began at zenith distance = 81 deg. The sun  altitude  is -59.4 deg. 

The galactic latitude b = 18 deg., longitude l = 18 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2410319

We obtain a following upper limits.  

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

     631 | 2024-03-29 21:53:08 |         MASTER-SAAO | (17h 15m 08.53s , -04d 46m 28.6s) |   C |    60 | 16.5 |        
     711 | 2024-03-29 21:54:28 |         MASTER-SAAO | (17h 15m 09.18s , -04d 46m 22.7s) |   C |    60 | 16.3 |        
     790 | 2024-03-29 21:55:47 |         MASTER-SAAO | (17h 15m 09.74s , -04d 46m 17.5s) |   C |    60 | 16.2 |        
Filter C is a clear (unfiltred) band. 


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