TITLE:   GCN CIRCULAR
NUMBER:  34697
SUBJECT: Fermi  trigger No 716419312: Global MASTER-Net observations report
DATE:    23/09/15 00:30:46 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-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 GRB230914.89 (trigger No 716419312,11h 08m 36.00s , +20d 06m 00.0s, R=33.73) errorbox  10996 sec after notice time and 11008 sec after trigger time at 2023-09-15 00:25:16 UT, with upper limit up to  18.2 mag. The observations began at zenith distance = 70 deg. The sun  altitude  is -29.7 deg. 

The galactic latitude b = 66 deg., longitude l = 225 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2270502

We obtain a following upper limits.  

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

   11019 | 2023-09-15 00:25:16 |      MASTER-Tavrida | (09h 54m 44.14s , +50d 07m 28.9s) |   C |    20 | 17.9 |        
   11049 | 2023-09-15 00:25:42 |      MASTER-Tavrida | (09h 54m 38.82s , +50d 06m 29.6s) |   C |    30 | 18.0 |        
   11086 | 2023-09-15 00:26:18 |      MASTER-Tavrida | (09h 54m 44.05s , +50d 06m 59.0s) |   C |    30 | 18.0 |        
   11128 | 2023-09-15 00:26:56 |      MASTER-Tavrida | (09h 54m 41.60s , +50d 08m 24.1s) |   C |    40 | 18.2 |        
Filter C is a clear (unfiltred) band. 


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