[vsnet-grb-info 23501] Fermi trigger No 589060361 Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  25600
SUBJECT: Fermi  trigger No 589060361 Global MASTER-Net observations report 
DATE:    19/09/01 21:17:22 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at 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 GRB190901.83 (trigger No 589060361,12h 37m 09.600s , -61d 37m 48.00s, R=6.99) errorbox  2237 sec after notice time and 2268 sec after trigger time at 2019-09-01 20:30:24 UT, with upper limit up to  18.2 mag. The observations began at zenit distance = 78 deg. The sun  altitude  is -51.9 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=1122516

We obtain a following upper limits.  

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

    2359 | 2019-09-01 20:30:24 |         MASTER-SAAO | (11h 23m 53.822s , -63d 55m 34.90s) |   C |   180 | 17.3 |        
    2578 | 2019-09-01 20:34:04 |         MASTER-SAAO | (11h 23m 52.977s , -63d 55m 00.39s) |   C |   180 | 17.5 |        
    3005 | 2019-09-01 20:41:11 |         MASTER-SAAO | (11h 23m 51.234s , -63d 55m 14.90s) |   C |   180 | 18.0 |        
    3225 | 2019-09-01 20:44:51 |         MASTER-SAAO | (11h 23m 50.532s , -63d 54m 46.94s) |   C |   180 | 18.2 |        
    3445 | 2019-09-01 20:48:30 |         MASTER-SAAO | (11h 42m 02.721s , -63d 54m 50.84s) |   C |   180 | 18.0 |        
    4020 | 2019-09-01 20:58:05 |         MASTER-SAAO | (11h 37m 37.611s , -65d 54m 53.11s) |   C |   180 | 17.6 |        
Filter C is a clear (unfiltred) band. 


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