GCN Circular 18254
Subject
GRB 150907B: MASTER-SAAO early optical observations
Date
2015-09-08T08:22:48Z (9 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
D.Buckley, S. Potter, M.Kotze
South African Astronomical Observatory
V. Lipunov, E.Gorbovskoy, N.Tyurina, V.Kornilov, P.Balanutsa,
A.Kuznetsov, D.Kuvshinov, I.Gorbunov
Lomonosov Moscow State University, Sternberg Astronomical Institute
R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias
A. Tlatov, D. Dormidontov, V.Senik
Kislovodsk Solar Station of the Pulkovo Observatory
K.Ivanov, O.Gres, N.M.Budnev, S.Yazev, O.Chuvalaev, V.A.Poleshchuk
Irkutsk State University
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov, A.Gabovich
Blagoveschensk Educational State University, Blagoveschensk
V.Krushinski, I.Zalozhnih
Ural Federal University, Kourovka
Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Carlos Lopez, Claudio Mallamaci and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in SAAO was pointed to the Swift Alert (Roegiers et al., GCN
18249) GRB150907B 25 sec after notice time
and 40 sec after trigger time at 2015-09-07 23:27:10 UT. On our first (10s
exposure) set we haven`t found optical transient within SWIFT error-box
(ra=17 00 51 dec=-63 49 07 r=0.050000).
The next images limit without OT:
Id Coord Pro.type Time,UT Exp.time Lim Filt. Tube
110113 16h 59m 04.1s -63d 41m 01s Alert 23:27:10 10 15.5 P EAST
110114 17h 00m 00.1s -63d 42m 55s Alert 23:27:10 10 15.7 P WEST
110115 16h 59m 47.7s -63d 42m 57s Alert 23:27:34 10 15.4 P WEST
110116 16h 59m 22.0s -63d 41m 10s Alert 23:27:34 10 15.2 P EAST
110117 16h 59m 47.5s -63d 42m 57s Alert 23:27:56 20 15.9 P WEST
110118 16h 59m 21.8s -63d 41m 10s Alert 23:27:56 20 15.7 P EAST
110119 16h 59m 21.6s -63d 41m 09s Alert 23:28:27 20 15.9 P EAST
110120 16h 59m 47.4s -63d 42m 56s Alert 23:28:27 20 16.1 P WEST
110121 16h 59m 21.6s -63d 41m 09s Alert 23:28:58 30 13.2 P EAST
110122 16h 59m 47.4s -63d 42m 56s Alert 23:28:58 30 13.5 P WEST
110123 17h 00m 00.1s -63d 42m 55s SumAlert23:27:10 40 16.3 P WEST
110124 16h 59m 21.4s -63d 41m 08s Alert 23:29:39 40 15.1 P EAST
110125 16h 59m 47.1s -63d 42m 55s Alert 23:29:39 40 15.5 P WEST
110126 16h 59m 04.1s -63d 41m 01s SumAlert23:27:10 40 16.1 P EAST
110127 16h 59m 47.1s -63d 42m 55s Alert 23:30:30 50 15.9 P WEST
110128 16h 59m 21.3s -63d 41m 08s Alert 23:30:30 50 15.5 P EAST
110129 16h 59m 47.4s -63d 42m 56s SumAlert23:28:27 90 15.9 P WEST
110130 16h 59m 21.2s -63d 41m 08s Alert 23:31:31 60 14.8 P EAST
110131 16h 59m 47.1s -63d 42m 56s Alert 23:31:31 60 15.4 P WEST
110132 16h 59m 21.6s -63d 41m 09s SumAlert23:28:27 110 16.1 P EAST
There was a short time between rain and clouds. Then the clouds returned.
The message may be cited.