TITLE:   GCN CIRCULAR
NUMBER:  34167
SUBJECT: IceCube Alert 230708.35: Global MASTER-Net observations report
DATE:    23/07/08 08:39:49 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, D. Vlasenko, 
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin
(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. Gres, N.M. Budnev
(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),

A. Gabovich, V.Yurkov 
(Blagoveschensk Educational State University)


MASTER-OAGH robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Mexico (OAGH National Institute for Astrophysics, Optics and Electronics) was pointed to the IceCube Alert 230708.35 (trigger No 35302784,18h 05m 13.44s , +08d 45m 14.4s, R=0.51) errorbox  156 sec after notice time and 202 sec after trigger time at 2023-07-08 08:20:27 UT, with upper limit up to  17.6 mag. The observations began at zenith distance = 36 deg. The sun  altitude  is -34.8 deg. 

The galactic latitude b = 14 deg., longitude l = 36 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2235528

We obtain a following upper limits.  

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

     222 | 2023-07-08 08:20:27 |         MASTER-OAGH | (18h 04m 21.46s , +08d 30m 44.1s) |  P- |    40 | 17.2 |        
     442 | 2023-07-08 08:23:46 |         MASTER-OAGH | (18h 04m 20.37s , +08d 31m 20.1s) |  P- |    80 | 17.6 |        
     708 | 2023-07-08 08:27:47 |         MASTER-OAGH | (18h 04m 27.68s , +08d 29m 58.1s) |  P- |   130 | 17.6 |        


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