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GCN Circular 24439

Subject
Fermi GRB190510.12 Global MASTER-Net observations report
Date
2019-05-10T05:31:18Z (6 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa,
A.Kuznetsov, V.V.Chazov, D. Vlasenko
(Lomonosov Moscow State University,
Sternberg Astronomical Institute, Moscow State University)

A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory)

K. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk
(Irkutsk State University)

V. Yurkov, A. Gabovich, Yu. Sergienko
(Blagoveschensk Educational State University, Blagoveschensk)

R. Podesta, Carlos Lopez and F. Podesta
(Observatorio Astronomico Felix Aguilar (OAFA))

Hugo Levato and Carlos Saffe
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE))

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
(The Instituto de Astrofisica de Canarias)

D. Buckley, S. Potter, A. Kniazev, M. Kotze
(South African Astronomical Observatory)



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 GRB190510.12 (trigger No 579149538,  8h 18m 09.60s , -53d  4m 12.00s, R=1.17) errorbox  2364 sec after trigger time at 2019-05-10 03:31:37 UT, with upper limit up to  18.8 mag. The observations began at zenit distance = 64 deg. The sun  altitude  is -70.8 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=1014488

We obtain a following upper limits.  

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

    2394 | 2019-05-10 03:31:37 |         MASTER-OAFA | (  8h 12m 59.54s , -55d 56m 50.14s) |   C |    60 | 18.0 |        
    2712 | 2019-05-10 03:36:55 |         MASTER-OAFA | (  8h 12m 59.22s , -55d 56m 31.18s) |   C |    60 | 17.9 |        
    2927 | 2019-05-10 03:40:29 |         MASTER-OAFA | (  8h  2m 33.51s , -53d 56m 47.02s) |   C |    60 | 17.8 |        
    3349 | 2019-05-10 03:47:32 |         MASTER-OAFA | (  8h  2m 33.17s , -53d 57m 06.45s) |   C |    60 | 17.9 |        
    3457 | 2019-05-10 03:49:20 |         MASTER-OAFA | (  8h 16m 10.07s , -53d 56m 47.81s) |   C |    60 | 17.8 |        
    3879 | 2019-05-10 03:56:21 |         MASTER-OAFA | (  8h 16m 09.63s , -53d 56m 46.55s) |   C |    60 | 17.7 |        
    4313 | 2019-05-10 04:03:35 |         MASTER-OAFA | (  8h  6m 36.17s , -51d 57m 00.30s) |   C |    60 | 17.6 |        
    4837 | 2019-05-10 04:12:20 |         MASTER-OAFA | (  8h  6m 37.03s , -51d 56m 59.06s) |   C |    60 | 17.7 |        
    5084 | 2019-05-10 04:15:27 |         MASTER-OAFA | (  8h 17m 28.43s , -53d  0m 56.19s) |   C |   180 | 18.3 |        
    5264 | 2019-05-10 04:15:27 |         MASTER-OAFA | (  8h 17m 28.43s , -53d  0m 56.14s) |   C |   540 | 18.8 |  Coadd 
    5306 | 2019-05-10 04:19:09 |         MASTER-OAFA | (  8h 17m 28.23s , -53d  0m 55.19s) |   C |   180 | 18.2 |        
    5527 | 2019-05-10 04:22:50 |         MASTER-OAFA | (  8h 17m 28.06s , -53d  0m 54.37s) |   C |   180 | 18.2 |        
    5748 | 2019-05-10 04:26:30 |         MASTER-OAFA | (  8h 17m 27.84s , -53d  0m 53.36s) |   C |   180 | 18.1 |        
    6129 | 2019-05-10 04:33:51 |         MASTER-OAFA | (  8h 19m 35.09s , -51d 56m 39.52s) |   C |    60 | 17.3 |        
Filter C is a clear (unfiltred) band. 


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