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GCN Circular 29212

Subject
Fermi trigger No 631118376: Global MASTER-Net observations report
Date
2020-12-31T20:30:54Z (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) started inspect of the Fermi GRB201231.61 (trigger No 631118376,22h 13m 52.80s , -26d 13m 48.0s, R=12.51) errorbox  17135 sec after notice time and 17162 sec after trigger time at 2020-12-31 19:25:34 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -14.6 deg. 

The galactic latitude b = -56 deg., longitude l = 26 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1516263

We obtain a following upper limits.  

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

   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 14m 06.85s , -24d 08m 08.5s) |   C |    60 | 18.0 |        
   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 05m 13.30s , -24d 03m 09.9s) |   C |    60 | 17.8 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 11m 40.95s , -22d 07m 08.3s) |   C |    60 | 18.3 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 02m 55.34s , -22d 02m 09.3s) |   C |    60 | 17.8 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (22h 05m 58.56s , -28d 08m 38.1s) |   C |    60 | 18.2 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (21h 56m 46.61s , -28d 03m 43.8s) |   C |    60 | 17.8 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (22h 00m 24.73s , -26d 07m 04.0s) |   C |    60 | 18.2 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (21h 51m 22.63s , -26d 02m 08.6s) |   C |    60 | 18.0 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 31m 31.97s , -24d 07m 55.7s) |   C |    60 | 18.7 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 22m 38.57s , -24d 02m 59.6s) |   C |    60 | 18.4 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 35m 57.50s , -26d 06m 57.1s) |   C |    60 | 18.8 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 26m 55.39s , -26d 02m 03.2s) |   C |    60 | 18.3 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 13m 29.11s , -30d 07m 53.5s) |   C |    60 | 18.7 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 04m 06.40s , -30d 03m 02.8s) |   C |    60 | 17.8 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 28m 53.14s , -22d 08m 59.7s) |   C |    60 | 18.4 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 20m 07.48s , -22d 04m 04.0s) |   C |    60 | 18.1 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 31m 58.26s , -30d 08m 30.9s) |   C |    60 | 18.5 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 22m 35.49s , -30d 03m 40.3s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 56m 31.98s , -24d 06m 55.8s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 47m 38.52s , -24d 02m 02.9s) |   C |    60 | 17.9 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 42m 15.36s , -28d 09m 00.8s) |   C |    60 | 18.7 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 33m 03.33s , -28d 04m 09.7s) |   C |    60 | 18.4 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 11m 00.99s , -20d 07m 11.7s) |   C |    60 | 18.5 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 02m 22.28s , -20d 02m 17.0s) |   C |    60 | 18.0 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 27m 57.06s , -20d 08m 04.3s) |   C |    60 | 18.5 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 19m 18.31s , -20d 03m 08.8s) |   C |    60 | 18.1 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 14m 00.61s , -24d 07m 00.8s) |   C |    60 | 18.2 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 05m 07.04s , -24d 02m 08.2s) |   C |    60 | 17.9 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 11m 42.81s , -22d 08m 01.3s) |   C |    60 | 18.3 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 02m 57.02s , -22d 03m 06.9s) |   C |    60 | 17.9 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (22h 05m 54.28s , -28d 08m 59.8s) |   C |    60 | 18.1 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (21h 56m 42.01s , -28d 04m 10.0s) |   C |    60 | 17.5 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (22h 00m 24.14s , -26d 08m 53.4s) |   C |    60 | 18.1 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (21h 51m 21.64s , -26d 04m 02.5s) |   C |    60 | 17.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 31m 35.67s , -24d 07m 08.9s) |   C |    60 | 18.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 22m 42.14s , -24d 02m 15.7s) |   C |    60 | 18.1 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 36m 00.24s , -26d 09m 03.1s) |   C |    60 | 18.5 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 26m 57.75s , -26d 04m 11.6s) |   C |    60 | 18.0 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 13m 28.90s , -30d 07m 16.1s) |   C |    60 | 18.3 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 04m 05.81s , -30d 02m 28.9s) |   C |    60 | 17.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 28m 54.39s , -22d 08m 09.8s) |   C |    60 | 18.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 20m 08.54s , -22d 03m 16.6s) |   C |    60 | 17.9 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 31m 52.58s , -30d 07m 09.6s) |   C |    60 | 18.2 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 22m 29.66s , -30d 02m 21.7s) |   C |    60 | 18.1 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 56m 35.51s , -24d 08m 00.4s) |   C |    60 | 17.8 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 47m 41.66s , -24d 03m 10.1s) |   C |    60 | 17.4 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 42m 12.34s , -28d 09m 12.7s) |   C |    60 | 18.3 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 32m 59.99s , -28d 04m 23.2s) |   C |    60 | 18.0 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 11m 00.89s , -20d 08m 42.0s) |   C |    60 | 18.1 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 02m 21.80s , -20d 03m 49.0s) |   C |    60 | 17.6 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 28m 00.19s , -20d 07m 28.2s) |   C |    60 | 18.1 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 19m 21.16s , -20d 02m 35.2s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 14m 03.76s , -24d 08m 52.5s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 05m 09.70s , -24d 04m 02.2s) |   C |    60 | 17.3 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 11m 42.66s , -22d 07m 21.8s) |   C |    60 | 18.0 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 02m 56.57s , -22d 02m 30.1s) |   C |    60 | 17.5 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (22h 05m 55.28s , -28d 08m 06.4s) |   C |    60 | 17.7 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (21h 56m 42.46s , -28d 03m 21.0s) |   C |    60 | 16.9 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (22h 00m 24.65s , -26d 08m 11.4s) |   C |    60 | 17.5 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (21h 51m 22.18s , -26d 03m 17.1s) |   C |    60 | 16.6 |        
   19792 | 2020-12-31 20:08:53 |          MASTER-IAC | (22h 31m 31.80s , -24d 09m 22.1s) |   C |    60 | 18.1 |        
   19792 | 2020-12-31 20:08:54 |          MASTER-IAC | (22h 22m 38.42s , -24d 04m 22.8s) |   C |    60 | 17.6 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 36m 03.14s , -26d 08m 56.1s) |   C |    60 | 18.0 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 27m 01.00s , -26d 03m 58.7s) |   C |    60 | 17.6 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 13m 25.76s , -30d 07m 35.7s) |   C |    60 | 17.9 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 04m 02.66s , -30d 02m 46.2s) |   C |    60 | 16.6 |        
Filter C is a clear (unfiltred) band. 


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