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GCN Circular 29143

Subject
Fermi GRB 201222B: Global MASTER-Net observations report
Date
2020-12-23T01:15:28Z (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-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 201222B ( Fermi GBM team, GCN 29126) errorbox  49075 sec after notice time and 49125 sec after trigger time at 2020-12-23 00:42:11 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 77 deg. The sun  altitude  is -12.3 deg. 

The galactic latitude b =  7 deg., longitude l = 185 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1509240

We obtain a following upper limits.  

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

   49156 | 2020-12-23 00:42:11 |         MASTER-OAFA | (06h 02m 01.37s , +23d 18m 10.6s) |   C |    60 | 16.0 |        
   49315 | 2020-12-23 00:44:50 |         MASTER-OAFA | (06h 13m 54.23s , +21d 18m 00.8s) |   C |    60 | 16.4 |        
   49635 | 2020-12-23 00:50:11 |         MASTER-OAFA | (05h 56m 25.50s , +27d 17m 21.2s) |   C |    60 | 16.4 |        
   49874 | 2020-12-23 00:54:09 |         MASTER-OAFA | (06h 07m 58.78s , +25d 17m 26.6s) |   C |    60 | 16.5 |        
   50033 | 2020-12-23 00:56:48 |         MASTER-OAFA | (06h 19m 26.67s , +23d 18m 41.9s) |   C |    60 | 16.8 |        
   50113 | 2020-12-23 00:58:08 |         MASTER-OAFA | (06h 01m 56.11s , +23d 19m 19.9s) |   C |    60 | 17.1 |        
   50193 | 2020-12-23 00:59:28 |         MASTER-OAFA | (06h 10m 47.69s , +23d 18m 33.8s) |   C |    60 | 17.0 |        
   50356 | 2020-12-23 01:02:11 |         MASTER-OAFA | (05h 59m 04.32s , +25d 17m 30.8s) |   C |    60 | 17.2 |        
   50436 | 2020-12-23 01:03:31 |         MASTER-OAFA | (06h 13m 54.45s , +21d 19m 15.0s) |   C |    60 | 17.3 |        
   50516 | 2020-12-23 01:04:51 |         MASTER-OAFA | (06h 22m 32.36s , +21d 18m 24.3s) |   C |    60 | 17.2 |        
Filter C is a clear (unfiltred) band. 


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