[vsnet-grb-info 25853] IceCube Alert 200615.62: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27953
SUBJECT: IceCube Alert 200615.62: Global MASTER-Net observations report 
DATE:    20/06/15 17:13:10 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),

H.Levato 
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),

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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the IceCube Alert 200615.62 (trigger No 17593623,09h 33m 48.48s , +03d 47m 20.4s, R=0.92) errorbox  5739 sec after notice time and 5852 sec after trigger time at 2020-06-15 16:26:49 UT, with upper limit up to  18.7 mag. Observations started at twilight.  The observations began at zenith distance = 45 deg. The sun  altitude  is -9.6 deg. 

The galactic latitude b = 38 deg., longitude l = 231 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1382374

We obtain a following upper limits.  

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

    5942 | 2020-06-15 16:26:49 |         MASTER-SAAO | (09h 30m 17.21s , +03d 46m 48.2s) |   C |   180 | 15.8 |        
    5942 | 2020-06-15 16:26:49 |         MASTER-SAAO | (09h 29m 23.02s , +03d 46m 13.0s) |   C |   180 | 15.8 |        
    6370 | 2020-06-15 16:34:57 |         MASTER-SAAO | (09h 35m 47.73s , +04d 08m 34.8s) |   C |    60 | 17.7 |        
    6370 | 2020-06-15 16:34:57 |         MASTER-SAAO | (09h 34m 53.19s , +04d 08m 01.2s) |   C |    60 | 18.0 |        
    6510 | 2020-06-15 16:36:17 |         MASTER-SAAO | (09h 30m 09.71s , +03d 46m 21.7s) |   C |   180 | 17.7 |        
    6510 | 2020-06-15 16:36:17 |         MASTER-SAAO | (09h 29m 15.24s , +03d 45m 47.4s) |   C |   180 | 18.0 |        
    6730 | 2020-06-15 16:40:57 |         MASTER-SAAO | (09h 35m 42.82s , +04d 07m 50.8s) |   C |    60 | 18.7 |        
    6730 | 2020-06-15 16:40:57 |         MASTER-SAAO | (09h 34m 48.55s , +04d 07m 17.1s) |   C |    60 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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