TITLE:   GCN CIRCULAR
NUMBER:  37098
SUBJECT: Fermi  trigger No 744761058: Global MASTER-Net observations report
DATE:    24/08/08 03:30:32 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, 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 GRB240807.92 (trigger No 744761058,20h 17m 28.80s , -48d 16m 12.0s, R=9.87) errorbox  15438 sec after notice time and 15443 sec after trigger time at 2024-08-08 02:21:37 UT, with upper limit up to  19.1 mag. The observations began at zenith distance = 50 deg. The sun  altitude  is -38.5 deg. 

The galactic latitude b = -34 deg., longitude l = 351 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2554750

We obtain a following upper limits.  

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

   15474 | 2024-08-08 02:21:37 |         MASTER-SAAO | (20h 36m 35.52s , -48d 23m 07.0s) |   C |    60 | 19.0 |        
   15636 | 2024-08-08 02:24:19 |         MASTER-SAAO | (20h 25m 04.88s , -50d 14m 36.6s) |   C |    60 | 19.1 |        
   15715 | 2024-08-08 02:25:38 |         MASTER-SAAO | (20h 37m 40.10s , -50d 16m 19.0s) |   C |    60 | 19.1 |        
   15873 | 2024-08-08 02:28:16 |         MASTER-SAAO | (20h 01m 41.13s , -48d 19m 19.4s) |   C |    60 | 19.0 |        
   15953 | 2024-08-08 02:29:36 |         MASTER-SAAO | (20h 13m 43.24s , -48d 21m 14.8s) |   C |    60 | 19.0 |        
   16111 | 2024-08-08 02:32:14 |         MASTER-SAAO | (20h 01m 18.12s , -50d 12m 53.5s) |   C |    60 | 19.0 |        
   16191 | 2024-08-08 02:33:34 |         MASTER-SAAO | (20h 13m 54.55s , -50d 14m 35.8s) |   C |    60 | 19.1 |        
   16270 | 2024-08-08 02:34:53 |         MASTER-SAAO | (20h 24m 29.59s , -48d 22m 11.4s) |   C |    60 | 19.1 |        
   16439 | 2024-08-08 02:37:42 |         MASTER-SAAO | (20h 36m 34.61s , -48d 21m 16.0s) |   C |    60 | 19.1 |        
   16598 | 2024-08-08 02:40:21 |         MASTER-SAAO | (20h 25m 10.15s , -50d 14m 17.6s) |   C |    60 | 19.1 |        
   16677 | 2024-08-08 02:41:40 |         MASTER-SAAO | (20h 37m 34.39s , -50d 15m 46.0s) |   C |    60 | 19.1 |        
Filter C is a clear (unfiltred) band. 


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