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GCN Circular 28869

Subject
Fermi GRB 201109A: Global MASTER-Net observations report
Date
2020-11-09T03:00:09Z (4 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 GRB 201109A ( Fermi GBM team, GCN 28868) errorbox  533 sec after notice time and 585 sec after trigger time at 2020-11-09 02:40:50 UT, with upper limit up to  18.2 mag. The observations began at zenith distance = 69 deg. The sun  altitude  is -61.5 deg. 

The galactic latitude b = 27 deg., longitude l = 235 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1478104

We obtain a following upper limits.  

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

     645 | 2020-11-09 02:40:50 |          MASTER-IAC | (09h 03m 30.97s , -05d 02m 21.6s) |   C |   120 | 17.3 |        
     805 | 2020-11-09 02:40:50 |          MASTER-IAC | (09h 03m 30.96s , -05d 02m 21.6s) |   C |   440 | 18.2 |  Coadd 
     795 | 2020-11-09 02:43:10 |          MASTER-IAC | (09h 03m 28.96s , -05d 01m 05.9s) |   C |   140 | 17.6 |        
     974 | 2020-11-09 02:45:50 |          MASTER-IAC | (09h 03m 29.14s , -05d 02m 40.8s) |   C |   180 | 17.9 |        
    1174 | 2020-11-09 02:49:09 |          MASTER-IAC | (09h 03m 33.03s , -05d 00m 53.6s) |   C |   180 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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