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GCN Circular 24776

Subject
Fermi trigger No 581841498 Global MASTER-Net observations report
Date
2019-06-10T17:32:00Z (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 
(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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB190610.28 (trigger No 581841498, 10h 22m 04.08s , -47d  1m 01.20s, R=24.63) errorbox  36430 sec after trigger time at 2019-06-10 16:45:23 UT, with upper limit up to  19.3 mag. Observations started at twilight.  The observations began at zenit distance = 19 deg. The sun  altitude  is -13.4 deg. 

The galactic latitude b = -60 deg., longitude l = 98 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1044320

We obtain a following upper limits.  

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

   36520 | 2019-06-10 16:45:23 |         MASTER-SAAO | ( 11h 59m 16.63s , -52d 32m 36.30s) |   I |   180 | 16.7 |        
   36732 | 2019-06-10 16:48:54 |         MASTER-SAAO | ( 11h 59m 18.50s , -52d 32m 46.65s) |   I |   180 | 17.3 |        
   36912 | 2019-06-10 16:48:54 |         MASTER-SAAO | ( 11h 59m 18.50s , -52d 32m 46.71s) |   I |   540 | 18.0 |  Coadd 
   36943 | 2019-06-10 16:52:26 |         MASTER-SAAO | ( 11h 59m 18.86s , -52d 32m 33.85s) |   I |   180 | 17.5 |        
   37160 | 2019-06-10 16:56:02 |         MASTER-SAAO | ( 11h 59m 18.17s , -52d 32m 38.31s) |   I |   180 | 17.6 |        
   37553 | 2019-06-10 16:59:35 |         MASTER-SAAO | ( 11h 59m 18.60s , -52d 33m 04.63s) |   V |   540 | 19.3 |  Coadd 


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