GCN Circular 38464

V.Lipunov, E.Gorbovskoy, N.Tiurina,  P.Balanutsa, , D.Vlasenko, I.Panchenko,
A.Kuznetsov,  G.Antipov,  A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, Ya.Kechin,
V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU),
O.Gress, N.Budnev (ISU),
C.Francile,  F. Podesta, R.Podesta, E. Gonzalez  (Observatorio Astronomico Felix Aguilar (OAFA),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity)
D.Buckley (SAAO),
R.Rebolo (The Instituto de Astrofisica de Canarias),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) 

MASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB241207.04 (trigger No 755225799,20h 13m 19.92s , +01d 52m 58.8s, R=27) errorbox  42443 sec after notice time and 42477 sec after trigger time at 2024-12-07 12:44:32 UT, with upper limit up to  17.4 mag. The observations began at zenith distance = 82 deg. The sun  altitude  is -34.0 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB241207.04 errorbox  49802 sec after notice time and 49836 sec after trigger time at 2024-12-07 14:47:11 UT, with upper limit up to  12.7 mag. Observations started at twilight.  The observations began at zenith distance = 60 deg. The sun  altitude  is -12.6 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB241207.04 errorbox  85440 sec after notice time and 85474 sec after trigger time at 2024-12-08 00:41:09 UT, with upper limit up to  18.6 mag. Observations started at twilight.  The observations began at zenith distance = 61 deg. The sun  altitude  is -13.9 deg. 

The galactic latitude b = -18 deg., longitude l = 45 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2698706

We obtain a following upper limits.  

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

   42508 | 2024-12-07 12:44:32 |        MASTER-Tunka | (19h 11m 44.73s , +05d 08m 47.3s) |   C |    60 | 17.4 |        
   49867 | 2024-12-07 14:47:11 |   MASTER-Kislovodsk | (19h 11m 05.58s , +05d 03m 36.5s) |   C |    60 | 12.7 |        
   54645 | 2024-12-07 16:06:50 |   MASTER-Kislovodsk | (19h 11m 08.51s , +04d 59m 37.3s) |   C |    60 | 12.3 |        
   85487 | 2024-12-08 00:41:09 |         MASTER-OAFA | (20h 36m 54.99s , -22d 53m 32.3s) |   C |    25 | 16.6 |        
   85512 | 2024-12-08 00:41:09 |         MASTER-OAFA | (20h 36m 54.99s , -22d 53m 32.3s) |   C |    75 | 17.3 |  Coadd 
   85498 | 2024-12-08 00:41:09 |         MASTER-OAFA | (20h 27m 07.85s , -23d 14m 22.0s) |   C |    45 | 17.9 |        
   85543 | 2024-12-08 00:41:09 |         MASTER-OAFA | (20h 27m 07.85s , -23d 14m 22.0s) |   C |   135 | 18.6 |  Coadd 
   85549 | 2024-12-08 00:42:11 |         MASTER-OAFA | (20h 37m 00.75s , -22d 54m 33.0s) |   C |    25 | 16.6 |        
   85559 | 2024-12-08 00:42:11 |         MASTER-OAFA | (20h 27m 13.60s , -23d 15m 22.0s) |   C |    45 | 18.1 |        
   85613 | 2024-12-08 00:43:14 |         MASTER-OAFA | (20h 36m 55.72s , -22d 55m 33.7s) |   C |    25 | 16.8 |        
   85623 | 2024-12-08 00:43:15 |         MASTER-OAFA | (20h 27m 08.52s , -23d 16m 21.9s) |   C |    45 | 18.1 |        
   85673 | 2024-12-08 00:44:15 |         MASTER-OAFA | (20h 37m 01.73s , -22d 55m 30.7s) |   C |    25 | 16.8 |        
   85684 | 2024-12-08 00:44:15 |         MASTER-OAFA | (20h 27m 14.60s , -23d 16m 18.7s) |   C |    45 | 18.0 |        
   85736 | 2024-12-08 00:45:18 |         MASTER-OAFA | (20h 36m 58.39s , -22d 53m 48.8s) |   C |    25 | 16.9 |        
   85746 | 2024-12-08 00:45:18 |         MASTER-OAFA | (20h 27m 11.43s , -23d 14m 36.5s) |   C |    45 | 18.2 |        
   85834 | 2024-12-08 00:46:18 |         MASTER-OAFA | (20h 36m 58.46s , -22d 55m 16.4s) |   C |   100 | 17.7 |        
   85804 | 2024-12-08 00:46:19 |         MASTER-OAFA | (20h 27m 11.44s , -23d 16m 03.0s) |   C |    40 | 18.2 |        
   85850 | 2024-12-08 00:47:05 |         MASTER-OAFA | (20h 27m 11.45s , -23d 16m 03.3s) |   C |    40 | 18.2 |        
   85896 | 2024-12-08 00:47:50 |         MASTER-OAFA | (20h 27m 11.44s , -23d 16m 03.5s) |   C |    40 | 18.2 |        
   85955 | 2024-12-08 00:48:49 |         MASTER-OAFA | (20h 37m 01.58s , -22d 54m 05.1s) |   C |    40 | 17.4 |        
   85965 | 2024-12-08 00:48:50 |         MASTER-OAFA | (20h 27m 14.72s , -23d 14m 51.6s) |   C |    60 | 18.5 |        
   86032 | 2024-12-08 00:50:07 |         MASTER-OAFA | (20h 36m 55.16s , -22d 54m 38.4s) |   C |    40 | 17.3 |        
   86043 | 2024-12-08 00:50:07 |         MASTER-OAFA | (20h 27m 08.24s , -23d 15m 24.4s) |   C |    60 | 18.4 |        
Filter C is a clear (unfiltred) band. 


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