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GCN Circular 19683

GRB 160625B: Global MASTER-Crimea prompt optical emission detection (fwd)
2016-07-12T19:03:59Z (8 years ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov,
P.Balanutsa,  A.Kuznetsov, D.Kuvshinov,
Lomonosov Moscow State University, Sternberg Astronomical Institute

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

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

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

V.Yurkov, Yu.Sergienko, A.Gabovich, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk

Ricardo Podesta, Carlos Lopez and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)

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

MASTER-Crimea  robotic telescope (testing camera 20 cm)  pointing to LAT 
error box (Dirirsa et al., GCN 19580) 12  sec after LAT notice time and 66 
sec after trigger time at 
2016-06-25  22:44:30 UT in unfiltered mode. The OT was about 9.55 +-0.01 
mag at this  moment ( 0.2B + 0.8R with respect  to USNOB1.0 stars)
The automatic photometry and astrometry  are:

+id-		    time	           coord2000		mag

179841451	22:44:30.055	20h 34m 23.49s , +06d 55m 07s.6	 9.55
179890027	22:44:30.055	20h 34m 23.52s , +06d 55m 07s.9	10.11
179845079	22:45:00.899	20h 34m 23.50s , +06d 55m 07s.8	10.03
179878574	22:45:37.806	20h 34m 23.52s , +06d 55m 08s.0	10.54
179909653	22:46:25.105	20h 34m 23.53s , +06d 55m 07s.8	11.46
179883969	22:46:25.105	20h 34m 23.52s , +06d 55m 07s.8	11.04
179895778	22:47:20.57	20h 34m 23.52s , +06d 55m 07s.9	11.52
179901960	22:48:26.68	20h 34m 23.52s , +06d 55m 08s.0	11.91

The delay with internet problems last time .

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