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GCN Circular 33619

Subject
Fermi GRB 230414A: Global MASTER-Net observations report
Date
2023-04-14T18:15:26Z (a year ago)
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, 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 GRB 230414A ( Fermi GBM team, GCN 33610) errorbox  32707 sec after notice time and 32748 sec after trigger time at 2023-04-14 17:06:37 UT, with upper limit up to  18.6 mag. Observations started at twilight.  The observations began at zenith distance = 78 deg. The sun  altitude  is -10.8 deg. 

The galactic latitude b = 44 deg., longitude l = 326 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2210136

We obtain a following upper limits.  

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

   32779 | 2023-04-14 17:06:37 |         MASTER-SAAO | (13h 41m 49.95s , -17d 47m 26.5s) |   C |    60 | 16.3 |        
   32870 | 2023-04-14 17:08:09 |         MASTER-SAAO | (13h 50m 07.61s , -17d 48m 34.9s) |   C |    60 | 16.6 |        
   32950 | 2023-04-14 17:09:28 |         MASTER-SAAO | (13h 33m 33.73s , -15d 52m 32.4s) |   C |    60 | 16.9 |        
   33041 | 2023-04-14 17:10:59 |         MASTER-SAAO | (13h 41m 52.62s , -15d 54m 01.8s) |   C |    60 | 17.0 |        
   33121 | 2023-04-14 17:12:19 |         MASTER-SAAO | (13h 51m 02.78s , -19d 41m 26.1s) |   C |    60 | 17.3 |        
   33212 | 2023-04-14 17:13:51 |         MASTER-SAAO | (13h 59m 32.50s , -19d 40m 35.2s) |   C |    60 | 17.3 |        
   33304 | 2023-04-14 17:15:22 |         MASTER-SAAO | (13h 49m 17.81s , -15d 54m 35.5s) |   C |    60 | 17.3 |        
   33383 | 2023-04-14 17:16:42 |         MASTER-SAAO | (13h 57m 42.23s , -15d 54m 43.1s) |   C |    60 | 17.4 |        
   33474 | 2023-04-14 17:18:13 |         MASTER-SAAO | (13h 42m 02.45s , -14d 00m 31.4s) |   C |    60 | 17.6 |        
   33554 | 2023-04-14 17:19:32 |         MASTER-SAAO | (13h 50m 19.32s , -13d 59m 03.9s) |   C |    60 | 17.8 |        
   33646 | 2023-04-14 17:21:04 |         MASTER-SAAO | (13h 57m 40.72s , -17d 46m 36.0s) |   C |    60 | 18.0 |        
   33725 | 2023-04-14 17:22:24 |         MASTER-SAAO | (14h 06m 11.41s , -17d 47m 48.0s) |   C |    60 | 17.9 |        
   33816 | 2023-04-14 17:23:55 |         MASTER-SAAO | (13h 47m 17.76s , -17d 48m 48.5s) |   C |    60 | 17.1 |        
   33816 | 2023-04-14 17:23:55 |         MASTER-SAAO | (13h 41m 44.56s , -17d 48m 23.7s) |   C |    60 | 18.3 |        
   33907 | 2023-04-14 17:25:26 |         MASTER-SAAO | (13h 55m 47.39s , -17d 48m 52.4s) |   C |    60 | 15.8 |        
   33907 | 2023-04-14 17:25:26 |         MASTER-SAAO | (13h 50m 14.13s , -17d 48m 28.2s) |   C |    60 | 18.4 |        
   33987 | 2023-04-14 17:26:46 |         MASTER-SAAO | (13h 39m 03.41s , -15d 53m 08.2s) |   C |    60 | 17.2 |        
   33987 | 2023-04-14 17:26:46 |         MASTER-SAAO | (13h 33m 33.68s , -15d 52m 42.2s) |   C |    60 | 17.9 |        
   34078 | 2023-04-14 17:28:16 |         MASTER-SAAO | (13h 47m 22.65s , -15d 54m 39.1s) |   C |    60 | 17.0 |        
   34078 | 2023-04-14 17:28:16 |         MASTER-SAAO | (13h 41m 52.80s , -15d 54m 13.3s) |   C |    60 | 18.3 |        
   34157 | 2023-04-14 17:29:36 |         MASTER-SAAO | (13h 56m 45.52s , -19d 41m 07.7s) |   C |    60 | 17.8 |        
   34157 | 2023-04-14 17:29:36 |         MASTER-SAAO | (13h 51m 08.55s , -19d 40m 42.7s) |   C |    60 | 18.6 |        
   34248 | 2023-04-14 17:31:07 |         MASTER-SAAO | (14h 05m 10.57s , -19d 41m 58.3s) |   C |    60 | 16.8 |        
   34248 | 2023-04-14 17:31:07 |         MASTER-SAAO | (13h 59m 33.52s , -19d 41m 34.0s) |   C |    60 | 18.5 |        
   34328 | 2023-04-14 17:32:26 |         MASTER-SAAO | (13h 54m 48.16s , -15d 53m 01.0s) |   C |    60 | 16.4 |        
   34328 | 2023-04-14 17:32:26 |         MASTER-SAAO | (13h 49m 18.24s , -15d 52m 34.9s) |   C |    60 | 18.3 |        
   34420 | 2023-04-14 17:33:58 |         MASTER-SAAO | (13h 57m 44.52s , -15d 53m 40.8s) |   C |    60 | 18.4 |        
   34511 | 2023-04-14 17:35:30 |         MASTER-SAAO | (13h 47m 26.91s , -14d 01m 03.9s) |   C |    60 | 17.3 |        
   34511 | 2023-04-14 17:35:30 |         MASTER-SAAO | (13h 41m 59.86s , -14d 00m 35.5s) |   C |    60 | 18.4 |        
   34591 | 2023-04-14 17:36:49 |         MASTER-SAAO | (13h 55m 46.61s , -14d 00m 59.0s) |   C |    60 | 15.9 |        
   34591 | 2023-04-14 17:36:49 |         MASTER-SAAO | (13h 50m 19.43s , -14d 00m 31.5s) |   C |    60 | 18.4 |        
   34681 | 2023-04-14 17:38:20 |         MASTER-SAAO | (14h 03m 17.85s , -17d 47m 23.6s) |   C |    60 | 17.3 |        
   34682 | 2023-04-14 17:38:20 |         MASTER-SAAO | (13h 57m 44.47s , -17d 46m 56.7s) |   C |    60 | 18.6 |        
   34761 | 2023-04-14 17:39:40 |         MASTER-SAAO | (14h 11m 41.67s , -17d 48m 50.5s) |   C |    60 | 15.2 |        
   34761 | 2023-04-14 17:39:40 |         MASTER-SAAO | (14h 06m 08.19s , -17d 48m 23.5s) |   C |    60 | 18.4 |        
   34852 | 2023-04-14 17:41:11 |         MASTER-SAAO | (13h 47m 23.27s , -17d 47m 21.2s) |   C |    60 | 17.8 |        
   34852 | 2023-04-14 17:41:11 |         MASTER-SAAO | (13h 41m 49.93s , -17d 46m 52.6s) |   C |    60 | 18.2 |        
Filter C is a clear (unfiltred) band. 


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