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GCN Circular 33318

Subject
Fermi trigger No 697904388: Global MASTER-Net observations report
Date
2023-02-12T21:30:28Z (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 GRB230212.60 (trigger No 697904388,04h 06m 19.20s , +37d 51m 36.0s, R=19.41) errorbox  22498 sec after notice time and 22510 sec after trigger time at 2023-02-12 20:34:53 UT, with upper limit up to  18.3 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -33.6 deg. 

The galactic latitude b = -10 deg., longitude l = 160 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2198479

We obtain a following upper limits.  

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

   22540 | 2023-02-12 20:34:53 |         MASTER-SAAO | (04h 09m 25.52s , +33d 29m 15.0s) |   C |    60 | 16.7 |        
   22540 | 2023-02-12 20:34:53 |         MASTER-SAAO | (04h 10m 23.58s , +33d 29m 05.8s) |   C |    60 | 17.8 |        
   22620 | 2023-02-12 20:36:13 |         MASTER-SAAO | (04h 18m 54.06s , +33d 30m 27.7s) |   C |    60 | 17.4 |        
   22620 | 2023-02-12 20:36:13 |         MASTER-SAAO | (04h 19m 51.99s , +33d 30m 18.6s) |   C |    60 | 17.9 |        
   22711 | 2023-02-12 20:37:44 |         MASTER-SAAO | (04h 04m 15.65s , +31d 37m 03.6s) |   C |    60 | 16.8 |        
   22711 | 2023-02-12 20:37:44 |         MASTER-SAAO | (04h 05m 12.29s , +31d 36m 53.3s) |   C |    60 | 17.9 |        
   22791 | 2023-02-12 20:39:04 |         MASTER-SAAO | (04h 13m 26.79s , +31d 36m 02.9s) |   C |    60 | 17.3 |        
   22791 | 2023-02-12 20:39:04 |         MASTER-SAAO | (04h 14m 23.38s , +31d 35m 53.2s) |   C |    60 | 18.1 |        
   22881 | 2023-02-12 20:40:34 |         MASTER-SAAO | (04h 40m 29.52s , +37d 18m 11.4s) |   C |    60 | 17.6 |        
   22881 | 2023-02-12 20:40:34 |         MASTER-SAAO | (04h 41m 29.81s , +37d 18m 01.9s) |   C |    60 | 18.3 |        
   22960 | 2023-02-12 20:41:53 |         MASTER-SAAO | (04h 50m 23.33s , +37d 17m 12.2s) |   C |    60 | 17.8 |        
   22960 | 2023-02-12 20:41:53 |         MASTER-SAAO | (04h 51m 23.57s , +37d 17m 02.6s) |   C |    60 | 18.2 |        
   23052 | 2023-02-12 20:43:25 |         MASTER-SAAO | (03h 59m 31.88s , +29d 43m 07.5s) |   C |    60 | 16.2 |        
   23052 | 2023-02-12 20:43:25 |         MASTER-SAAO | (04h 00m 27.03s , +29d 42m 55.4s) |   C |    60 | 17.9 |        
   23353 | 2023-02-12 20:48:26 |         MASTER-SAAO | (04h 08m 42.27s , +29d 43m 04.9s) |   C |    60 | 16.9 |        
   23353 | 2023-02-12 20:48:26 |         MASTER-SAAO | (04h 09m 37.81s , +29d 42m 47.7s) |   C |    60 | 18.1 |        
   23444 | 2023-02-12 20:49:57 |         MASTER-SAAO | (04h 33m 46.78s , +35d 24m 29.0s) |   C |    60 | 17.5 |        
   23444 | 2023-02-12 20:49:57 |         MASTER-SAAO | (04h 34m 45.44s , +35d 24m 09.9s) |   C |    60 | 18.3 |        
   23524 | 2023-02-12 20:51:17 |         MASTER-SAAO | (04h 43m 25.25s , +35d 23m 28.7s) |   C |    60 | 17.7 |        
   23524 | 2023-02-12 20:51:17 |         MASTER-SAAO | (04h 44m 23.81s , +35d 23m 10.0s) |   C |    60 | 18.3 |        
   23615 | 2023-02-12 20:52:48 |         MASTER-SAAO | (04h 27m 38.92s , +33d 31m 13.4s) |   C |    60 | 17.1 |        
   23615 | 2023-02-12 20:52:48 |         MASTER-SAAO | (04h 28m 36.11s , +33d 30m 53.2s) |   C |    60 | 18.0 |        
   23695 | 2023-02-12 20:54:07 |         MASTER-SAAO | (04h 37m 05.01s , +33d 30m 33.8s) |   C |    60 | 17.5 |        
   23695 | 2023-02-12 20:54:07 |         MASTER-SAAO | (04h 38m 02.23s , +33d 30m 14.1s) |   C |    60 | 18.2 |        
   23785 | 2023-02-12 20:55:38 |         MASTER-SAAO | (04h 22m 05.72s , +31d 35m 47.1s) |   C |    60 | 16.9 |        
   23785 | 2023-02-12 20:55:38 |         MASTER-SAAO | (04h 23m 01.72s , +31d 35m 26.7s) |   C |    60 | 18.0 |        
   23865 | 2023-02-12 20:56:58 |         MASTER-SAAO | (04h 31m 20.80s , +31d 37m 25.4s) |   C |    60 | 17.2 |        
   23865 | 2023-02-12 20:56:58 |         MASTER-SAAO | (04h 32m 16.78s , +31d 37m 06.1s) |   C |    60 | 18.0 |        
   23956 | 2023-02-12 20:58:29 |         MASTER-SAAO | (04h 16m 56.41s , +29d 43m 44.3s) |   C |    60 | 16.6 |        
   23956 | 2023-02-12 20:58:29 |         MASTER-SAAO | (04h 17m 51.34s , +29d 43m 23.5s) |   C |    60 | 18.0 |        
   24046 | 2023-02-12 20:59:59 |         MASTER-SAAO | (04h 26m 08.44s , +29d 42m 43.3s) |   C |    60 | 17.2 |        
   24046 | 2023-02-12 20:59:59 |         MASTER-SAAO | (04h 27m 03.31s , +29d 42m 23.0s) |   C |    60 | 18.1 |        
   24143 | 2023-02-12 21:01:36 |         MASTER-SAAO | (04h 45m 46.87s , +33d 29m 52.7s) |   C |    60 | 17.5 |        
   24143 | 2023-02-12 21:01:36 |         MASTER-SAAO | (04h 46m 43.96s , +33d 29m 32.4s) |   C |    60 | 18.2 |        
   24234 | 2023-02-12 21:03:07 |         MASTER-SAAO | (04h 55m 16.40s , +33d 31m 39.9s) |   C |    60 | 17.7 |        
   24234 | 2023-02-12 21:03:07 |         MASTER-SAAO | (04h 56m 13.57s , +33d 31m 19.9s) |   C |    60 | 18.2 |        
   24314 | 2023-02-12 21:04:27 |         MASTER-SAAO | (04h 52m 17.26s , +35d 24m 59.1s) |   C |    60 | 17.5 |        
   24314 | 2023-02-12 21:04:27 |         MASTER-SAAO | (04h 53m 15.60s , +35d 24m 38.5s) |   C |    60 | 18.1 |        
   24406 | 2023-02-12 21:05:59 |         MASTER-SAAO | (05h 02m 02.07s , +35d 26m 00.4s) |   C |    60 | 17.5 |        
   24406 | 2023-02-12 21:05:59 |         MASTER-SAAO | (05h 03m 00.50s , +35d 25m 40.4s) |   C |    60 | 17.9 |        
   24497 | 2023-02-12 21:07:30 |         MASTER-SAAO | (04h 39m 49.07s , +31d 36m 01.1s) |   C |    60 | 17.2 |        
   24497 | 2023-02-12 21:07:30 |         MASTER-SAAO | (04h 40m 44.91s , +31d 35m 40.8s) |   C |    60 | 18.0 |        
   24577 | 2023-02-12 21:08:49 |         MASTER-SAAO | (04h 49m 10.68s , +31d 37m 46.8s) |   C |    60 | 17.6 |        
   24577 | 2023-02-12 21:08:50 |         MASTER-SAAO | (04h 50m 06.60s , +31d 37m 27.4s) |   C |    60 | 18.1 |        
   24669 | 2023-02-12 21:10:22 |         MASTER-SAAO | (04h 34m 24.67s , +29d 43m 53.5s) |   C |    60 | 17.0 |        
   24670 | 2023-02-12 21:10:22 |         MASTER-SAAO | (04h 35m 19.45s , +29d 43m 33.6s) |   C |    60 | 18.0 |        
   24749 | 2023-02-12 21:11:42 |         MASTER-SAAO | (04h 43m 32.05s , +29d 42m 18.4s) |   C |    60 | 17.5 |        
   24749 | 2023-02-12 21:11:42 |         MASTER-SAAO | (04h 44m 26.84s , +29d 41m 58.8s) |   C |    60 | 18.1 |        
   24840 | 2023-02-12 21:13:13 |         MASTER-SAAO | (05h 03m 58.18s , +33d 30m 26.3s) |   C |    60 | 17.4 |        
   24840 | 2023-02-12 21:13:13 |         MASTER-SAAO | (05h 04m 55.28s , +33d 30m 06.9s) |   C |    60 | 17.8 |        
   24920 | 2023-02-12 21:14:33 |         MASTER-SAAO | (05h 13m 27.13s , +33d 31m 44.2s) |   C |    60 | 17.5 |        
   24920 | 2023-02-12 21:14:33 |         MASTER-SAAO | (05h 14m 24.33s , +33d 31m 25.1s) |   C |    60 | 17.8 |        
   25011 | 2023-02-12 21:16:04 |         MASTER-SAAO | (05h 10m 51.89s , +35d 24m 20.6s) |   C |    60 | 17.3 |        
   25011 | 2023-02-12 21:16:04 |         MASTER-SAAO | (05h 11m 50.26s , +35d 24m 00.5s) |   C |    60 | 17.7 |        
   25103 | 2023-02-12 21:17:36 |         MASTER-SAAO | (05h 20m 44.10s , +35d 24m 36.1s) |   C |    60 | 17.5 |        
   25103 | 2023-02-12 21:17:36 |         MASTER-SAAO | (05h 21m 42.47s , +35d 24m 16.6s) |   C |    60 | 17.8 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
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