TITLE:   GCN CIRCULAR
NUMBER:  26943
SUBJECT: Fermi  trigger No 602056641: Global MASTER-Net observations report 
DATE:    20/01/30 07:45:14 GMT
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 GRB200130.25 (trigger No 602056641,21h 57m 09.60s , -65d 55m 48.0s, R=1.69) errorbox  3000 sec after notice time and 3031 sec after trigger time at 2020-01-30 06:47:47 UT, with upper limit up to  18.3 mag. The observations began at zenith distance = 81 deg. The sun  altitude  is -33.3 deg. 

The galactic latitude b = -43 deg., longitude l = 325 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1272515

We obtain a following upper limits.  

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

    3122 | 2020-01-30 06:47:47 |         MASTER-OAFA | (21h 50m 31.63s , -67d 22m 55.6s) |   C |   180 | 18.0 |        
    3852 | 2020-01-30 06:59:58 |         MASTER-OAFA | (21h 50m 32.48s , -67d 22m 54.7s) |   C |   180 | 17.9 |        
    4149 | 2020-01-30 07:04:54 |         MASTER-OAFA | (22h 11m 22.45s , -68d 50m 41.0s) |   C |   180 | 18.3 |        
    4866 | 2020-01-30 07:16:52 |         MASTER-OAFA | (22h 11m 23.63s , -68d 50m 40.5s) |   C |   180 | 18.3 |        
Filter C is a clear (unfiltred) band. 


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