[vsnet-grb-info 19357] Short GRB 170428A: MASTER-OAFA final reduction of the optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  21054
SUBJECT: Short GRB 170428A: MASTER-OAFA  final reduction  of the optical observations 
DATE:    17/05/01 11:13:25 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, D.Kuvshinov, A.V.Krylov,
I.Gorbunov, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D. Vlasenko
Lomonosov Moscow State University, Sternberg Astronomical Institut of MSU

R.Podesta, C.Lopez, F. Podesta Observatorio Astronomico Felix Aguilar (OAFA) , 
National University of San Juan, Argentina

H. Levato, C. Saffe
Instituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE),
San Juan, Argentina

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

V.Yurkov, Yu.Sergienko
Blagoveschensk Educational State University, Blagoveschensk

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

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

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

MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in 
OAFA was pointed to the  GRB170428A (Beardmore et al., GCN 21042) 17 sec 
after notice time and 31 sec after 
trigger time at 2017-04-28 09:14:14 UT (Podesta et al., GCN 21044).

Our unfiletred limits are:

     Date time 	       Exp 	Proc.type 	Lim.
                         (s)

2017-04-28 09:14:14	10 	Alert (SWIFT) 	16.6 
2017-04-28 09:15:04     20 	Alert (SWIFT) 	17.1 
2017-04-28 09:16:07     30 	Alert (SWIFT) 	17.6
2017-04-28 09:17:19     40 	Alert (SWIFT) 	17.9
2017-04-28 09:18:42     60 	Alert (SWIFT) 	18.2 
2017-04-28 09:20:24     80 	Alert (SWIFT) 	18.6
2017-04-28 09:17:19    180    SumAlert(SWIFT) 	19.1 
2017-04-28 09:22:28    110 	Alert (SWIFT) 	18.9
2017-04-28 09:24:59    140 	Alert (SWIFT) 	19.0
2017-04-28 09:28:01    170 	Alert (SWIFT) 	19.2 
2017-04-28 09:22:28    420    SumAlert(SWIFT)   19.7
2017-04-28 09:31:33    180 	Alert (SWIFT) 	19.3
2017-04-28 09:35:16    180 	Alert (SWIFT) 	19.4 
2017-04-28 09:38:59    180 	Alert (SWIFT) 	19.5
2017-04-28 09:31:33    540    SumAlert (SWIFT) 	19.9 
2017-04-28 09:42:42    180 	Alert (SWIFT) 	19.5
2017-04-28 09:48:50    180 	Alert (SWIFT) 	19.5 
2017-04-28 09:55:02    180 	Alert (SWIFT) 	19.5
2017-04-28 09:42:42    540    SumAlert (SWIFT) 	20.1
2017-04-28 09:58:46    180 	Alert (SWIFT) 	19.4
2017-04-28 10:02:26    180 	Alert (SWIFT) 	19.1 
2017-04-28 10:06:07    180 	Alert (SWIFT) 	18.8
2017-04-28 09:58:46    540    SumAlert (SWIFT)  19.3
2017-04-28 10:09:49    180      Alert (SWIFT)   18.3 
2017-04-28 09:31:33   1800    SumAlert (SWIFT) 	20.3
2017-04-28 10:02:26   1440    SumAlert (SWIFT) 	19.8


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