TITLE:   GCN CIRCULAR
NUMBER:  37784
SUBJECT: Fermi GRB 241013B: Global MASTER-Net observations report
DATE:    24/10/14 09:01:25 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>

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-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 241013B ( Fermi GBM team, GCN 37782) errorbox  36897 sec after notice time and 36928 sec after trigger time at 2024-10-14 08:43:10 UT, with upper limit up to  19.5 mag. Observations started at twilight.  The observations began at zenith distance = 51 deg. The sun  altitude  is -16.0 deg. 

The galactic latitude b = 17 deg., longitude l = 265 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2636881

We obtain a following upper limits.  

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

   36948 | 2024-10-14 08:43:10 |         MASTER-OAFA | (09h 47m 00.62s , -33d 27m 45.8s) |   C |    40 | 17.9 |        
   36959 | 2024-10-14 08:43:10 |         MASTER-OAFA | (09h 57m 48.11s , -33d 01m 25.2s) |   C |    60 | 19.5 |        
   37280 | 2024-10-14 08:48:42 |         MASTER-OAFA | (09h 34m 54.66s , -31d 32m 09.9s) |   C |    40 | 17.5 |        
   37290 | 2024-10-14 08:48:42 |         MASTER-OAFA | (09h 45m 29.22s , -31d 05m 56.8s) |   C |    60 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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