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GCN Circular 27918

Subject
Fermi trigger No 613630183: Global MASTER-Net observations report
Date
2020-06-12T05:30:23Z (5 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),

H.Levato 
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),

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 GRB200612.20 (trigger No 613630183,18h 53m 52.08s , -36d 55m 01.2s, R=34.25) errorbox 25 sec after trigger time at 2020-06-12 04:50:04 UT, with upper limit up to  18.9 mag. The observations began at zenith distance = 33 deg. The sun  altitude  is -81.4 deg. 

The galactic latitude b = -17 deg., longitude l = 360 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1380117

We obtain a following upper limits.  

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

      85 | 2020-06-12 04:50:04 |         MASTER-OAFA | (20h 09m 37.26s , -45d 26m 59.1s) |   C |   120 | 18.5 |        
     252 | 2020-06-12 04:52:35 |         MASTER-OAFA | (20h 09m 33.88s , -45d 25m 35.5s) |   C |   150 | 18.6 |        
     449 | 2020-06-12 04:55:38 |         MASTER-OAFA | (20h 09m 34.04s , -45d 27m 14.1s) |   C |   180 | 18.7 |        
     661 | 2020-06-12 04:59:09 |         MASTER-OAFA | (20h 09m 37.75s , -45d 25m 33.7s) |   C |   180 | 18.8 |        
     872 | 2020-06-12 05:02:40 |         MASTER-OAFA | (20h 09m 30.94s , -45d 26m 22.0s) |   C |   180 | 18.9 |        
    1083 | 2020-06-12 05:06:11 |         MASTER-OAFA | (20h 09m 31.75s , -45d 25m 21.9s) |   C |   180 | 18.9 |        
    1295 | 2020-06-12 05:09:43 |         MASTER-OAFA | (20h 09m 37.94s , -45d 26m 20.9s) |   C |   180 | 18.8 |        
    1505 | 2020-06-12 05:13:14 |         MASTER-OAFA | (20h 09m 31.14s , -45d 27m 20.6s) |   C |   180 | 18.9 |        
    1717 | 2020-06-12 05:16:45 |         MASTER-OAFA | (20h 09m 37.75s , -45d 26m 57.9s) |   C |   180 | 18.9 |        
Filter C is a clear (unfiltred) band. 


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