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GCN Circular 34324

Subject
Fermi trigger No 712713532: Global MASTER-Net observations report
Date
2023-08-03T01:31:25Z (a year 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-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB230802.99 (trigger No 712713532,01h 28m 52.80s , +09d 37m 12.0s, R=5.88) errorbox  33 sec after notice time and 66 sec after trigger time at 2023-08-02 23:59:54 UT, with upper limit up to  18.6 mag. The observations began at zenith distance = 53 deg. The sun  altitude  is -21.4 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB230802.99 errorbox  578 sec after notice time and 611 sec after trigger time at 2023-08-03 00:08:59 UT, with upper limit up to  18.0 mag. The observations began at zenith distance = 62 deg. The sun  altitude  is -66.3 deg. 

The galactic latitude b = -52 deg., longitude l = 139 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2249252

We obtain a following upper limits.  

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

      72 | 2023-08-02 23:59:54 |      MASTER-Tavrida | (01h 58m 42.33s , +07d 15m 33.4s) |   C |    10 | 16.6 |        
      94 | 2023-08-03 00:00:11 |      MASTER-Tavrida | (01h 58m 44.94s , +07d 17m 12.7s) |   C |    20 | 17.3 |        
     121 | 2023-08-03 00:00:38 |      MASTER-Tavrida | (01h 58m 38.43s , +07d 16m 24.2s) |   C |    20 | 17.3 |        
     152 | 2023-08-03 00:01:05 |      MASTER-Tavrida | (01h 58m 38.24s , +07d 17m 24.3s) |   C |    30 | 17.6 |        
     195 | 2023-08-03 00:01:43 |      MASTER-Tavrida | (01h 58m 45.90s , +07d 16m 24.2s) |   C |    40 | 17.8 |        
     244 | 2023-08-03 00:02:31 |      MASTER-Tavrida | (01h 58m 38.80s , +07d 15m 24.1s) |   C |    40 | 17.8 |        
     296 | 2023-08-03 00:03:18 |      MASTER-Tavrida | (01h 58m 45.15s , +07d 15m 44.3s) |   C |    50 | 18.1 |        
     365 | 2023-08-03 00:04:18 |      MASTER-Tavrida | (01h 58m 42.05s , +07d 17m 21.2s) |   C |    70 | 18.2 |        
     646 | 2023-08-03 00:08:33 |      MASTER-Tavrida | (01h 26m 04.48s , +09d 43m 04.3s) |   C |   120 | 18.0 |        
     641 | 2023-08-03 00:08:59 |         MASTER-SAAO | (01h 27m 20.59s , +09d 19m 53.1s) |   C |    60 | 17.1 |        
     701 | 2023-08-03 00:08:59 |         MASTER-SAAO | (01h 27m 20.58s , +09d 19m 53.1s) |   C |   180 | 18.0 |  Coadd 
     641 | 2023-08-03 00:08:59 |         MASTER-SAAO | (01h 26m 30.45s , +09d 21m 11.6s) |   C |    60 | 16.7 |        
     701 | 2023-08-03 00:08:59 |         MASTER-SAAO | (01h 26m 30.45s , +09d 21m 11.6s) |   C |   180 | 17.5 |  Coadd 
     732 | 2023-08-03 00:10:30 |         MASTER-SAAO | (01h 27m 21.60s , +09d 20m 54.5s) |   C |    60 | 17.4 |        
     732 | 2023-08-03 00:10:30 |         MASTER-SAAO | (01h 26m 31.51s , +09d 22m 12.0s) |   C |    60 | 17.4 |        
     784 | 2023-08-03 00:10:42 |      MASTER-Tavrida | (01h 25m 57.88s , +09d 42m 17.1s) |   C |   140 | 18.3 |        
     812 | 2023-08-03 00:11:49 |         MASTER-SAAO | (01h 27m 27.50s , +09d 19m 55.4s) |   C |    60 | 17.2 |        
     812 | 2023-08-03 00:11:49 |         MASTER-SAAO | (01h 26m 37.38s , +09d 21m 12.9s) |   C |    60 | 16.8 |        
     946 | 2023-08-03 00:13:09 |      MASTER-Tavrida | (01h 25m 57.57s , +09d 43m 16.5s) |   C |   170 | 18.5 |        
     903 | 2023-08-03 00:13:20 |         MASTER-SAAO | (01h 26m 31.56s , +09d 20m 12.9s) |   C |    60 | 16.7 |        
     903 | 2023-08-03 00:13:20 |         MASTER-SAAO | (01h 27m 21.67s , +09d 18m 55.8s) |   C |    60 | 17.0 |        
    1131 | 2023-08-03 00:16:09 |      MASTER-Tavrida | (01h 26m 04.51s , +09d 42m 15.8s) |   C |   180 | 18.6 |        
Filter C is a clear (unfiltred) band. 


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