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GCN Circular 28968

Subject
IceCube Alert 201130.85: Global MASTER-Net observations report
Date
2020-11-30T20:39:08Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@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-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) was pointed to the IceCube Alert 201130.85 (trigger No 31476488,02h 01m 58.80s , -11d 36m 50.4s, R=0.71) errorbox  38 sec after notice time and 82 sec after trigger time at 2020-11-30 20:23:09 UT, with upper limit up to  17.2 mag. The observations began at zenith distance = 49 deg. The sun  altitude  is -29.5 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) was pointed to the IceCube Alert 201130.85 errorbox  57 sec after notice time and 101 sec after trigger time at 2020-11-30 20:23:27 UT, with upper limit up to  17.8 mag. The observations began at zenith distance = 21 deg. The sun  altitude  is -28.6 deg. 

The galactic latitude b = -67 deg., longitude l = 174 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1493295

We obtain a following upper limits.  

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

      93 | 2020-11-30 20:23:09 |          MASTER-IAC | (02h 01m 03.53s , -11d 41m 42.3s) |   C |    20 | 15.9 |        
     118 | 2020-11-30 20:23:09 |          MASTER-IAC | (02h 01m 03.53s , -11d 41m 42.3s) |   C |    70 | 16.7 |  Coadd 
     111 | 2020-11-30 20:23:27 |         MASTER-SAAO | (02h 00m 40.65s , -11d 40m 55.8s) |  P/ |    20 | 16.1 |        
     111 | 2020-11-30 20:23:27 |         MASTER-SAAO | (01h 59m 49.05s , -11d 41m 44.3s) | P\  |    20 | 17.2 |        
     132 | 2020-11-30 20:23:48 |          MASTER-IAC | (02h 00m 56.87s , -11d 42m 43.8s) |   C |    20 | 16.0 |        
     156 | 2020-11-30 20:24:07 |         MASTER-SAAO | (02h 00m 34.15s , -11d 41m 30.6s) |  P/ |    30 | 16.4 |        
     156 | 2020-11-30 20:24:07 |         MASTER-SAAO | (01h 59m 42.53s , -11d 42m 19.3s) | P\  |    30 | 17.7 |        
     176 | 2020-11-30 20:24:27 |          MASTER-IAC | (02h 01m 02.80s , -11d 42m 35.9s) |   C |    30 | 16.4 |        
     211 | 2020-11-30 20:24:57 |         MASTER-SAAO | (02h 00m 34.44s , -11d 40m 30.0s) |  P/ |    40 | 16.6 |        
     211 | 2020-11-30 20:24:57 |         MASTER-SAAO | (01h 59m 42.85s , -11d 41m 18.6s) | P\  |    40 | 17.8 |        
     231 | 2020-11-30 20:25:17 |          MASTER-IAC | (02h 00m 59.89s , -11d 40m 47.7s) |   C |    40 | 16.4 |        
     291 | 2020-11-30 20:25:17 |          MASTER-IAC | (02h 00m 59.88s , -11d 40m 47.7s) |   C |   160 | 17.2 |  Coadd 
     275 | 2020-11-30 20:25:56 |         MASTER-SAAO | (02h 00m 41.18s , -11d 41m 29.0s) |  P/ |    50 | 16.7 |        
     275 | 2020-11-30 20:25:56 |         MASTER-SAAO | (01h 59m 49.59s , -11d 42m 17.8s) | P\  |    50 | 17.7 |        
     295 | 2020-11-30 20:26:16 |          MASTER-IAC | (02h 00m 59.92s , -11d 42m 37.5s) |   C |    50 | 16.5 |        
     350 | 2020-11-30 20:27:06 |         MASTER-SAAO | (02h 00m 35.36s , -11d 42m 28.8s) |  P/ |    60 | 16.9 |        
     350 | 2020-11-30 20:27:06 |         MASTER-SAAO | (01h 59m 43.80s , -11d 43m 17.5s) | P\  |    60 | 17.8 |        
     375 | 2020-11-30 20:27:26 |          MASTER-IAC | (02h 01m 03.90s , -11d 40m 52.2s) |   C |    70 | 16.7 |        
     469 | 2020-11-30 20:28:55 |          MASTER-IAC | (02h 00m 57.69s , -11d 41m 51.7s) |   C |    80 | 16.7 |        
     578 | 2020-11-30 20:30:34 |          MASTER-IAC | (02h 00m 57.12s , -11d 40m 52.6s) |   C |   100 | 16.8 |        
     713 | 2020-11-30 20:32:34 |          MASTER-IAC | (02h 01m 02.57s , -11d 41m 53.8s) |   C |   130 | 17.1 |        
Filter C is a clear (unfiltred) band. 


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