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GCN Circular 29217

Subject
Fermi trigger No 631119348: Global MASTER-Net observations report
Date
2021-01-01T20:15:32Z (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 GRB201231.62 (trigger No 631119348,08h 18m 28.80s , +39d 03m 36.0s, R=17.94) errorbox  37186 sec after notice time and 37215 sec after trigger time at 2021-01-01 01:15:58 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 33 deg. The sun  altitude  is -84.6 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB201231.62 errorbox  1 days 16396 sec after notice time and 1 days 16425 sec after trigger time at 2021-01-01 19:29:28 UT, with upper limit up to  16.9 mag. The observations began at zenith distance = 38 deg. The sun  altitude  is -54.9 deg. 

The galactic latitude b = 34 deg., longitude l = 182 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1516180

We obtain a following upper limits.  

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

   37245 | 2021-01-01 01:15:58 |          MASTER-IAC | (08h 08m 38.58s , +58d 02m 51.4s) |   C |    60 | 18.0 |        
   37245 | 2021-01-01 01:15:58 |          MASTER-IAC | (07h 53m 14.29s , +58d 07m 41.8s) |   C |    60 | 17.8 |        
   41353 | 2021-01-01 02:24:25 |          MASTER-IAC | (08h 08m 39.01s , +58d 02m 38.2s) |   C |    60 | 18.1 |        
   41353 | 2021-01-01 02:24:25 |          MASTER-IAC | (07h 53m 15.77s , +58d 07m 21.4s) |   C |    60 | 17.8 |        
   46187 | 2021-01-01 03:45:00 |          MASTER-IAC | (08h 08m 39.00s , +58d 01m 54.0s) |   C |    60 | 17.9 |        
   46187 | 2021-01-01 03:45:00 |          MASTER-IAC | (07h 53m 15.76s , +58d 06m 27.0s) |   C |    60 | 17.7 |        
  102855 | 2021-01-01 19:29:28 |      MASTER-Tavrida | (08h 24m 36.87s , +56d 17m 08.5s) |   C |    60 | 13.8 |        
  102855 | 2021-01-01 19:29:28 |      MASTER-Tavrida | (08h 35m 24.84s , +56d 14m 23.6s) |   C |    60 | 14.0 |        
  104773 | 2021-01-01 20:01:25 |      MASTER-Tavrida | (08h 24m 31.27s , +56d 15m 45.2s) |   C |    60 | 16.7 |        
  104773 | 2021-01-01 20:01:25 |      MASTER-Tavrida | (08h 35m 18.03s , +56d 12m 54.2s) |   C |    60 | 16.9 |        
Filter C is a clear (unfiltred) band. 


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