GCN Circular 36737

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 GRB240622.44 (trigger No 740744838,09h 39m 07.92s , +74d 46m 01.2s, R=35.72) errorbox  29252 sec after notice time and 29284 sec after trigger time at 2024-06-22 18:35:17 UT, with upper limit up to  15.7 mag. Observations started at twilight.  The observations began at zenith distance = 75 deg. The sun  altitude  is -9.8 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB240622.44 errorbox  30316 sec after notice time and 30348 sec after trigger time at 2024-06-22 18:53:02 UT, with upper limit up to  16.6 mag. Observations started at twilight.  The observations began at zenith distance = 81 deg. The sun  altitude  is -16.2 deg. 

The galactic latitude b = 37 deg., longitude l = 137 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2503268

We obtain a following upper limits.  

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

   29314 | 2024-06-22 18:35:17 |      MASTER-Tavrida | (02h 37m 42.72s , +60d 36m 40.0s) |   C |    60 | 13.8 |        
   30003 | 2024-06-22 18:46:46 |      MASTER-Tavrida | (03h 43m 04.34s , +55d 36m 54.3s) |   C |    60 | 14.2 |        
   30103 | 2024-06-22 18:48:26 |      MASTER-Tavrida | (02h 37m 38.22s , +60d 38m 07.0s) |   C |    60 | 14.8 |        
   30103 | 2024-06-22 18:48:26 |      MASTER-Tavrida | (02h 37m 46.34s , +60d 34m 19.3s) |   C |    60 | 15.4 |        
   30201 | 2024-06-22 18:50:04 |      MASTER-Tavrida | (02h 54m 10.92s , +60d 42m 42.9s) |   C |    60 | 14.7 |        
   30201 | 2024-06-22 18:50:04 |      MASTER-Tavrida | (02h 53m 53.36s , +60d 47m 24.2s) |   C |    60 | 14.8 |        
   30379 | 2024-06-22 18:53:02 |   MASTER-Kislovodsk | (03h 46m 17.11s , +56d 07m 27.5s) |   C |    60 | 16.6 |        
   31280 | 2024-06-22 19:08:03 |      MASTER-Tavrida | (03h 43m 14.23s , +55d 27m 38.2s) |   C |    60 | 13.3 |        
   31280 | 2024-06-22 19:08:03 |      MASTER-Tavrida | (03h 43m 24.91s , +55d 23m 54.7s) |   C |    60 | 14.2 |        
   31376 | 2024-06-22 19:09:39 |      MASTER-Tavrida | (02h 54m 07.26s , +60d 41m 39.2s) |   C |    60 | 15.7 |        
   31376 | 2024-06-22 19:09:39 |      MASTER-Tavrida | (02h 53m 51.84s , +60d 46m 50.7s) |   C |    60 | 15.3 |        
Filter C is a clear (unfiltred) band. 


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