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GCN Circular 37235

Subject
Fermi trigger No 746019401: Global MASTER-Net observations report
Date
2024-08-22T18:46:11Z (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 GRB240822.48 (trigger No 746019401,18h 53m 31.92s , +05d 36m 00.0s, R=15.28) errorbox  21896 sec after notice time and 21927 sec after trigger time at 2024-08-22 17:42:03 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 50 deg. The sun  altitude  is -11.8 deg. 

The galactic latitude b =  2 deg., longitude l = 38 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2571281

We obtain a following upper limits.  

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

   22018 | 2024-08-22 17:42:03 |      MASTER-Tavrida | (18h 41m 17.95s , -04d 57m 32.8s) |   C |   180 | 16.1 |        
   22018 | 2024-08-22 17:42:03 |      MASTER-Tavrida | (18h 41m 14.05s , -04d 52m 38.5s) |   C |   180 | 16.5 |        
   22150 | 2024-08-22 17:45:16 |      MASTER-Tavrida | (18h 41m 24.14s , -04d 58m 46.3s) |   C |    60 | 17.0 |        
   22150 | 2024-08-22 17:45:16 |      MASTER-Tavrida | (18h 41m 20.20s , -04d 53m 49.5s) |   C |    60 | 17.1 |        
   22224 | 2024-08-22 17:46:30 |      MASTER-Tavrida | (18h 41m 16.96s , -04d 58m 31.4s) |   C |    60 | 17.0 |        
   22224 | 2024-08-22 17:46:30 |      MASTER-Tavrida | (18h 41m 13.00s , -04d 53m 33.6s) |   C |    60 | 17.1 |        
   22306 | 2024-08-22 17:47:52 |      MASTER-Tavrida | (18h 41m 24.92s , -04d 59m 57.4s) |   C |    60 | 17.0 |        
   22306 | 2024-08-22 17:47:52 |      MASTER-Tavrida | (18h 41m 20.95s , -04d 54m 58.8s) |   C |    60 | 17.1 |        
   22378 | 2024-08-22 17:49:03 |      MASTER-Tavrida | (18h 41m 20.25s , -04d 57m 05.6s) |   C |    60 | 17.0 |        
   22378 | 2024-08-22 17:49:04 |      MASTER-Tavrida | (18h 41m 16.28s , -04d 52m 06.1s) |   C |    60 | 17.1 |        
   22450 | 2024-08-22 17:50:15 |      MASTER-Tavrida | (18h 41m 21.34s , -04d 59m 38.9s) |   C |    60 | 17.2 |        
   22450 | 2024-08-22 17:50:16 |      MASTER-Tavrida | (18h 41m 17.38s , -04d 54m 38.6s) |   C |    60 | 17.1 |        
   22524 | 2024-08-22 17:51:30 |      MASTER-Tavrida | (18h 41m 23.86s , -04d 57m 05.7s) |   C |    60 | 17.1 |        
   22524 | 2024-08-22 17:51:30 |      MASTER-Tavrida | (18h 41m 19.91s , -04d 52m 04.9s) |   C |    60 | 17.2 |        
   22597 | 2024-08-22 17:52:42 |      MASTER-Tavrida | (18h 41m 18.11s , -04d 59m 16.1s) |   C |    60 | 17.1 |        
   22597 | 2024-08-22 17:52:42 |      MASTER-Tavrida | (18h 41m 14.18s , -04d 54m 14.8s) |   C |    60 | 17.2 |        
   22672 | 2024-08-22 17:53:58 |      MASTER-Tavrida | (18h 41m 16.30s , -04d 56m 58.4s) |   C |    60 | 17.1 |        
   22672 | 2024-08-22 17:53:58 |      MASTER-Tavrida | (18h 41m 12.41s , -04d 51m 56.9s) |   C |    60 | 17.2 |        
   22746 | 2024-08-22 17:55:12 |      MASTER-Tavrida | (18h 41m 24.95s , -04d 59m 23.4s) |   C |    60 | 17.1 |        
   23252 | 2024-08-22 18:02:38 |      MASTER-Tavrida | (18h 41m 19.12s , -04d 59m 48.3s) |   C |   180 | 17.1 |        
   23252 | 2024-08-22 18:02:38 |      MASTER-Tavrida | (18h 41m 15.53s , -04d 54m 43.5s) |   C |   180 | 17.3 |        
   24474 | 2024-08-22 18:22:59 |      MASTER-Tavrida | (18h 41m 23.07s , -04d 59m 51.6s) |   C |   180 | 17.2 |        
   24474 | 2024-08-22 18:22:59 |      MASTER-Tavrida | (18h 41m 19.89s , -04d 54m 44.5s) |   C |   180 | 17.2 |        
Filter C is a clear (unfiltred) band. 


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