TITLE:   GCN CIRCULAR
NUMBER:  38185
SUBJECT: Fermi GRB 241112A: Global MASTER-Net observations report
DATE:    24/11/12 23:45:22 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>

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-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 241112A ( Fermi GBM team, GCN 38170) errorbox  24193 sec after notice time and 24227 sec after trigger time at 2024-11-12 08:33:26 UT, with upper limit up to  15.4 mag. Observations started at twilight.  The observations began at zenith distance = 35 deg. The sun  altitude  is -11.8 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 241112A errorbox  76564 sec after notice time and 76598 sec after trigger time at 2024-11-12 23:06:17 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 79 deg. The sun  altitude  is -39.0 deg. 

The galactic latitude b = 44 deg., longitude l = 245 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2666595

We obtain a following upper limits.  

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

   24317 | 2024-11-12 08:33:26 |         MASTER-OAFA | (09h 35m 01.12s , -12d 02m 29.4s) |   C |   180 | 15.4 |        
   76628 | 2024-11-12 23:06:17 |         MASTER-SAAO | (09h 35m 42.48s , -11d 59m 33.3s) |   C |    60 | 17.7 |        
   77437 | 2024-11-12 23:19:46 |         MASTER-SAAO | (09h 35m 39.66s , -11d 59m 47.3s) |   C |    60 | 17.9 |        
   78242 | 2024-11-12 23:33:11 |         MASTER-SAAO | (09h 35m 36.25s , -11d 58m 53.8s) |   C |    60 | 18.1 |        
   78480 | 2024-11-12 23:37:09 |         MASTER-SAAO | (09h 43m 03.10s , -11d 59m 31.4s) |   C |    60 | 18.0 |        
   78559 | 2024-11-12 23:38:28 |         MASTER-SAAO | (09h 51m 11.62s , -11d 58m 00.7s) |   C |    60 | 17.8 |        
Filter C is a clear (unfiltred) band. 


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