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GCN Circular 34326

Subject
Fermi trigger No 712718833: Global MASTER-Net observations report
Date
2023-08-03T02:15:33Z (8 months ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
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 GRB230803.06 (trigger No 712718833,10h 33m 38.40s , -64d 22m 48.0s, R=3.33) errorbox  566 sec after notice time and 602 sec after trigger time at 2023-08-03 01:37:10 UT, with upper limit up to  15.2 mag. The observations began at zenith distance = 83 deg. The sun  altitude  is -48.7 deg. 

The galactic latitude b = -6 deg., longitude l = 289 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2249288

We obtain a following upper limits.  

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

     632 | 2023-08-03 01:37:10 |         MASTER-SAAO | (10h 31m 29.69s , -64d 13m 16.9s) |   C |    60 | 14.0 |        
     692 | 2023-08-03 01:37:10 |         MASTER-SAAO | (10h 31m 29.69s , -64d 13m 16.9s) |   C |   180 | 14.0 |  Coadd 
     632 | 2023-08-03 01:37:10 |         MASTER-SAAO | (10h 33m 24.96s , -64d 14m 58.3s) |   C |    60 | 14.9 |        
     692 | 2023-08-03 01:37:10 |         MASTER-SAAO | (10h 33m 24.97s , -64d 14m 57.9s) |   C |   180 | 15.2 |  Coadd 
     723 | 2023-08-03 01:38:41 |         MASTER-SAAO | (10h 31m 23.52s , -64d 13m 50.9s) |   C |    60 | 13.4 |        
     723 | 2023-08-03 01:38:41 |         MASTER-SAAO | (10h 33m 18.65s , -64d 15m 33.1s) |   C |    60 | 14.6 |        
     803 | 2023-08-03 01:40:00 |         MASTER-SAAO | (10h 31m 24.53s , -64d 12m 54.1s) |   C |    60 | 13.6 |        
     803 | 2023-08-03 01:40:00 |         MASTER-SAAO | (10h 33m 19.47s , -64d 14m 36.0s) |   C |    60 | 14.8 |        
     894 | 2023-08-03 01:41:32 |         MASTER-SAAO | (10h 31m 30.04s , -64d 13m 54.6s) |   C |    60 | 13.6 |        
     894 | 2023-08-03 01:41:32 |         MASTER-SAAO | (10h 33m 24.97s , -64d 15m 37.3s) |   C |    60 | 14.6 |        
Filter C is a clear (unfiltred) band. 


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


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