[vsnet-grb-info 26429] IceCube Alert 200929.74: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  28529
SUBJECT: IceCube Alert 200929.74: Global MASTER-Net observations report 
DATE:    20/09/29 19:26:07 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, 
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D.Kuvshinov,  D. Cheryasov
(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, O.Ershova 
(Irkutsk State University, API),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

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




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) was pointed to the IceCube Alert 200929.74 (trigger No 68615710,01h 56m 11.52s , +03d 04m 51.6s, R=0.51) errorbox  2654 sec after notice time and 2722 sec after trigger time at 2020-09-29 18:33:59 UT, with upper limit up to  18.2 mag. The observations began at zenith distance = 48 deg. The sun  altitude  is -37.6 deg. 

The galactic latitude b = -55 deg., longitude l = 154 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1452099

We obtain a following upper limits.  

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

    2812 | 2020-09-29 18:33:59 |        MASTER-Tunka | (01h 55m 20.08s , +02d 47m 06.9s) |   C |   180 | 18.2 |        
    3547 | 2020-09-29 18:46:13 |        MASTER-Tunka | (01h 55m 19.91s , +02d 46m 12.9s) |   C |   180 | 18.1 |        
Filter C is a clear (unfiltred) band. 


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