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GCN Circular 36365

Subject
Fermi trigger No 736197684: Global MASTER-Net observations report
Date
2024-05-01T18:16:47Z (2 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, 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-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 GRB240430.81 (trigger No 736197684,13h 24m 04.80s , +01d 32m 24.0s, R=2.55) errorbox 198 sec after trigger time at 2024-04-30 19:24:38 UT, with upper limit up to  19.9 mag. The observations began at zenith distance = 44 deg. The sun  altitude  is -23.4 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB240430.81 errorbox 1871 sec after trigger time at 2024-04-30 19:52:31 UT, with upper limit up to  19.4 mag. The observations began at zenith distance = 40 deg. The sun  altitude  is -49.2 deg. 

The galactic latitude b = 63 deg., longitude l = 322 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2440878

We obtain a following upper limits.  

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

     289 | 2024-04-30 19:24:38 |      MASTER-Tavrida | (13h 23m 21.65s , +02d 30m 51.9s) |   C |   180 | 19.4 |        
     469 | 2024-04-30 19:24:38 |      MASTER-Tavrida | (13h 23m 21.65s , +02d 30m 51.9s) |   C |   540 | 19.9 |  Coadd 
     477 | 2024-04-30 19:27:46 |      MASTER-Tavrida | (13h 23m 15.20s , +02d 30m 00.3s) |   C |   180 | 19.3 |        
     668 | 2024-04-30 19:30:57 |      MASTER-Tavrida | (13h 23m 15.93s , +02d 30m 56.4s) |   C |   180 | 19.4 |        
    1088 | 2024-04-30 19:37:57 |      MASTER-Tavrida | (13h 31m 18.88s , +03d 42m 23.5s) |   C |   180 | 19.3 |        
    1268 | 2024-04-30 19:37:57 |      MASTER-Tavrida | (13h 31m 18.88s , +03d 42m 23.4s) |   C |   540 | 19.6 |  Coadd 
    1278 | 2024-04-30 19:41:07 |      MASTER-Tavrida | (13h 31m 24.17s , +03d 42m 37.3s) |   C |   180 | 19.2 |        
    1469 | 2024-04-30 19:44:18 |      MASTER-Tavrida | (13h 31m 21.48s , +03d 44m 13.4s) |   C |   180 | 19.1 |        
    1662 | 2024-04-30 19:47:31 |      MASTER-Tavrida | (13h 22m 18.52s , +01d 48m 50.7s) |   C |   180 | 19.1 |        
    1842 | 2024-04-30 19:47:31 |      MASTER-Tavrida | (13h 22m 18.51s , +01d 48m 50.7s) |   C |   540 | 19.9 |  Coadd 
    1850 | 2024-04-30 19:50:39 |      MASTER-Tavrida | (13h 22m 21.59s , +01d 49m 60.0s) |   C |   180 | 19.2 |        
    1901 | 2024-04-30 19:52:31 |         MASTER-SAAO | (13h 22m 23.31s , +01d 16m 32.9s) |   C |    60 | 19.2 |        
    1901 | 2024-04-30 19:52:31 |         MASTER-SAAO | (13h 24m 12.47s , +01d 03m 30.1s) |   C |    60 | 19.2 |        
    2039 | 2024-04-30 19:53:48 |      MASTER-Tavrida | (13h 22m 15.25s , +01d 49m 21.0s) |   C |   180 | 19.2 |        
    2023 | 2024-04-30 19:54:33 |         MASTER-SAAO | (13h 22m 19.93s , +01d 17m 36.9s) |   C |    60 | 19.3 |        
    2023 | 2024-04-30 19:54:33 |         MASTER-SAAO | (13h 24m 09.11s , +01d 04m 34.4s) |   C |    60 | 19.4 |        
    2231 | 2024-04-30 19:57:00 |      MASTER-Tavrida | (13h 30m 14.68s , +01d 50m 18.5s) |   C |   180 | 19.3 |        
    2411 | 2024-04-30 19:57:00 |      MASTER-Tavrida | (13h 30m 14.67s , +01d 50m 18.5s) |   C |   540 | 19.8 |  Coadd 
    2422 | 2024-04-30 20:00:11 |      MASTER-Tavrida | (13h 30m 21.66s , +01d 49m 16.4s) |   C |   180 | 19.1 |        
    2617 | 2024-04-30 20:03:26 |      MASTER-Tavrida | (13h 30m 14.91s , +01d 48m 14.5s) |   C |   180 | 19.4 |        
    4597 | 2024-04-30 20:37:26 |         MASTER-SAAO | (13h 22m 32.98s , +01d 18m 15.1s) |   C |    60 | 19.3 |        
    4597 | 2024-04-30 20:37:26 |         MASTER-SAAO | (13h 24m 23.25s , +01d 05m 15.4s) |   C |    60 | 19.3 |        
    4676 | 2024-04-30 20:38:46 |         MASTER-SAAO | (13h 22m 34.12s , +01d 19m 17.6s) |   C |    60 | 19.2 |        
    4676 | 2024-04-30 20:38:46 |         MASTER-SAAO | (13h 24m 24.37s , +01d 06m 17.8s) |   C |    60 | 19.2 |        
    5247 | 2024-04-30 20:48:16 |         MASTER-SAAO | (13h 22m 45.18s , +01d 18m 29.9s) |   C |    60 | 19.2 |        
    5247 | 2024-04-30 20:48:16 |         MASTER-SAAO | (13h 24m 35.35s , +01d 05m 29.7s) |   C |    60 | 19.2 |        
   14756 | 2024-04-30 23:26:45 |      MASTER-Tavrida | (13h 15m 02.14s , -00d 04m 57.2s) |   C |    60 | 18.1 |        
   14901 | 2024-04-30 23:29:10 |      MASTER-Tavrida | (13h 14m 58.84s , -00d 05m 07.1s) |   C |    60 | 17.9 |        
   79004 | 2024-05-01 17:17:33 |         MASTER-SAAO | (13h 24m 53.62s , +02d 59m 31.3s) |   C |    60 | 18.8 |        
   79004 | 2024-05-01 17:17:33 |         MASTER-SAAO | (13h 23m 04.43s , +03d 12m 23.3s) |   C |    60 | 18.8 |        
   79084 | 2024-05-01 17:18:53 |         MASTER-SAAO | (13h 23m 48.22s , -00d 46m 45.0s) |   C |    60 | 19.0 |        
   79084 | 2024-05-01 17:18:53 |         MASTER-SAAO | (13h 21m 58.84s , -00d 33m 54.0s) |   C |    60 | 19.0 |        
   79163 | 2024-05-01 17:20:13 |         MASTER-SAAO | (13h 08m 37.59s , +01d 06m 38.3s) |   C |    60 | 19.2 |        
   79163 | 2024-05-01 17:20:13 |         MASTER-SAAO | (13h 06m 47.92s , +01d 19m 29.2s) |   C |    60 | 19.4 |        
   79243 | 2024-05-01 17:21:32 |         MASTER-SAAO | (13h 09m 36.22s , +03d 01m 39.3s) |   C |    60 | 19.1 |        
   79243 | 2024-05-01 17:21:32 |         MASTER-SAAO | (13h 07m 46.49s , +03d 14m 30.3s) |   C |    60 | 19.1 |        
   79323 | 2024-05-01 17:22:52 |         MASTER-SAAO | (13h 26m 50.92s , +04d 54m 30.0s) |   C |    60 | 18.9 |        
   79323 | 2024-05-01 17:22:52 |         MASTER-SAAO | (13h 25m 01.37s , +05d 07m 21.5s) |   C |    60 | 19.0 |        
   79403 | 2024-05-01 17:24:13 |         MASTER-SAAO | (13h 39m 02.10s , +01d 05m 26.1s) |   C |    60 | 18.9 |        
   79403 | 2024-05-01 17:24:13 |         MASTER-SAAO | (13h 37m 12.92s , +01d 18m 17.1s) |   C |    60 | 19.2 |        
   79563 | 2024-05-01 17:26:52 |         MASTER-SAAO | (13h 24m 31.64s , -02d 40m 29.2s) |   C |    60 | 19.0 |        
   79563 | 2024-05-01 17:26:52 |         MASTER-SAAO | (13h 22m 41.80s , -02d 27m 39.4s) |   C |    60 | 19.0 |        
   79643 | 2024-05-01 17:28:12 |         MASTER-SAAO | (13h 40m 07.21s , +02d 59m 49.8s) |   C |    60 | 18.7 |        
   79643 | 2024-05-01 17:28:12 |         MASTER-SAAO | (13h 38m 17.92s , +03d 12m 41.7s) |   C |    60 | 19.0 |        
   79723 | 2024-05-01 17:29:32 |         MASTER-SAAO | (13h 39m 00.27s , -00d 46m 45.2s) |   C |    60 | 19.1 |        
   79723 | 2024-05-01 17:29:32 |         MASTER-SAAO | (13h 37m 10.83s , -00d 33m 54.3s) |   C |    60 | 19.1 |        
   79963 | 2024-05-01 17:33:32 |         MASTER-SAAO | (13h 24m 56.23s , +03d 00m 34.2s) |   C |    60 | 19.0 |        
   79963 | 2024-05-01 17:33:32 |         MASTER-SAAO | (13h 23m 06.45s , +03d 13m 25.3s) |   C |    60 | 19.2 |        
   80043 | 2024-05-01 17:34:52 |         MASTER-SAAO | (13h 23m 42.41s , -00d 48m 22.7s) |   C |    60 | 19.0 |        
   80043 | 2024-05-01 17:34:52 |         MASTER-SAAO | (13h 21m 52.46s , -00d 35m 32.1s) |   C |    60 | 19.1 |        
   80123 | 2024-05-01 17:36:12 |         MASTER-SAAO | (13h 08m 43.78s , +01d 06m 06.5s) |   C |    60 | 19.1 |        
   80123 | 2024-05-01 17:36:12 |         MASTER-SAAO | (13h 06m 53.58s , +01d 18m 57.2s) |   C |    60 | 19.3 |        
   80202 | 2024-05-01 17:37:31 |         MASTER-SAAO | (13h 09m 39.58s , +03d 01m 42.2s) |   C |    60 | 19.1 |        
   80202 | 2024-05-01 17:37:31 |         MASTER-SAAO | (13h 07m 49.33s , +03d 14m 33.4s) |   C |    60 | 19.0 |        
   80282 | 2024-05-01 17:38:51 |         MASTER-SAAO | (13h 26m 47.46s , +04d 53m 42.4s) |   C |    60 | 19.1 |        
   80282 | 2024-05-01 17:38:51 |         MASTER-SAAO | (13h 24m 57.31s , +05d 06m 34.0s) |   C |    60 | 19.1 |        
   80363 | 2024-05-01 17:40:12 |         MASTER-SAAO | (13h 39m 08.25s , +01d 07m 11.6s) |   C |    60 | 19.0 |        
   80363 | 2024-05-01 17:40:12 |         MASTER-SAAO | (13h 37m 18.45s , +01d 20m 02.8s) |   C |    60 | 19.1 |        
   80522 | 2024-05-01 17:42:52 |         MASTER-SAAO | (13h 24m 28.33s , -02d 40m 23.5s) |   C |    60 | 18.8 |        
   80522 | 2024-05-01 17:42:52 |         MASTER-SAAO | (13h 22m 37.91s , -02d 27m 32.6s) |   C |    60 | 18.8 |        
   80603 | 2024-05-01 17:44:12 |         MASTER-SAAO | (13h 40m 09.77s , +03d 00m 22.4s) |   C |    60 | 18.5 |        
   80603 | 2024-05-01 17:44:12 |         MASTER-SAAO | (13h 38m 19.88s , +03d 13m 14.1s) |   C |    60 | 18.6 |        
   80682 | 2024-05-01 17:45:32 |         MASTER-SAAO | (13h 38m 55.46s , -00d 48m 34.5s) |   C |    60 | 18.7 |        
   80682 | 2024-05-01 17:45:32 |         MASTER-SAAO | (13h 37m 05.45s , -00d 35m 43.2s) |   C |    60 | 18.6 |        
   80922 | 2024-05-01 17:49:32 |         MASTER-SAAO | (13h 24m 53.03s , +02d 59m 41.9s) |   C |    60 | 18.8 |        
   80922 | 2024-05-01 17:49:32 |         MASTER-SAAO | (13h 23m 02.75s , +03d 12m 34.1s) |   C |    60 | 18.8 |        
   81002 | 2024-05-01 17:50:51 |         MASTER-SAAO | (13h 23m 48.48s , -00d 46m 41.8s) |   C |    60 | 18.5 |        
   81002 | 2024-05-01 17:50:51 |         MASTER-SAAO | (13h 21m 58.08s , -00d 33m 50.0s) |   C |    60 | 18.5 |        
   81082 | 2024-05-01 17:52:12 |         MASTER-SAAO | (13h 08m 36.31s , +01d 06m 45.0s) |   C |    60 | 18.7 |        
   81082 | 2024-05-01 17:52:12 |         MASTER-SAAO | (13h 06m 45.67s , +01d 19m 37.2s) |   C |    60 | 18.8 |        
   81163 | 2024-05-01 17:53:32 |         MASTER-SAAO | (13h 09m 36.51s , +03d 01m 43.6s) |   C |    60 | 18.5 |        
   81163 | 2024-05-01 17:53:32 |         MASTER-SAAO | (13h 07m 45.80s , +03d 14m 35.9s) |   C |    60 | 18.5 |        
   81242 | 2024-05-01 17:54:51 |         MASTER-SAAO | (13h 26m 50.48s , +04d 54m 29.5s) |   C |    60 | 18.6 |        
   81242 | 2024-05-01 17:54:51 |         MASTER-SAAO | (13h 24m 59.82s , +05d 07m 22.0s) |   C |    60 | 18.8 |        
   81323 | 2024-05-01 17:56:12 |         MASTER-SAAO | (13h 39m 02.46s , +01d 05m 22.2s) |   C |    60 | 18.6 |        
   81323 | 2024-05-01 17:56:12 |         MASTER-SAAO | (13h 37m 12.17s , +01d 18m 14.0s) |   C |    60 | 18.6 |        
   81482 | 2024-05-01 17:58:51 |         MASTER-SAAO | (13h 24m 30.85s , -02d 40m 47.7s) |   C |    60 | 18.5 |        
   81482 | 2024-05-01 17:58:51 |         MASTER-SAAO | (13h 22m 39.89s , -02d 27m 56.2s) |   C |    60 | 18.5 |        
   81562 | 2024-05-01 18:00:12 |         MASTER-SAAO | (13h 40m 06.61s , +02d 59m 28.0s) |   C |    60 | 18.3 |        
   81562 | 2024-05-01 18:00:12 |         MASTER-SAAO | (13h 38m 16.17s , +03d 12m 19.9s) |   C |    60 | 18.3 |        
   81652 | 2024-05-01 18:01:41 |         MASTER-SAAO | (13h 39m 00.87s , -00d 46m 50.4s) |   C |    60 | 18.1 |        
   81652 | 2024-05-01 18:01:41 |         MASTER-SAAO | (13h 37m 10.31s , -00d 33m 58.8s) |   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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