GCN Circular 22978
Subject
GRB 180715A: MASTER optical observation
Date
2018-07-20T18:09:52Z (6 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
D. Vlasenko, N.Tiurina, E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Kuznetsov,
V.Chazov, I. Gorbunov, D.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov
Lomonosov Moscow State University,SAI
4
A. Tlatov, V.Senik, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory
R. Podesta, F. Podesta, C. Lopez, C.Francile
Observatorio Astronomico Felix Aguilar (OAFA)
H.Levato,
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
O. Gres, N.M.Budnev , Yu.Ishmuhametova
Irkutsk State University (ISU)
A. Gabovich, V. Yurkov, Yu. Sergienko
Blagoveschensk Educational State University (BSPU)
D. Buckley,
South African Astronomical Observatory (SAAO)
R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias (IAC)
MASTER-Tavrida robotic telescope (MASTER-Net: http://observ.pereplet.ru,
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in
Russia (SAI Crimea astronomical station) was pointed to the GRB180715A
(Ukwatta et al., GCN Circ #22947) 96 sec after trigger time at 2018-07-15
18:08:41 UT as sun altitude was -6.95 dec first image was at 2018-07-15
18:30:37. On our first (180s exposure) set we do not found optical
transients within Swift error-box (ra=235.069 dec=-0.925 r=0.05) brighter
then 20.7.
The observations made on zenit distance = 44.16 degrees, galaxy latitude b
= 40,1 degree.
The moon (10 % bright part) is 8 degrees above the horizon. The distance
between moon and object is 82
The sun altitude is -9.85 degree.
The object can be observed till 2018-07-15 21:36:28
MASTER-SAAO robotic telescope (MASTER-Net: http://observ.pereplet.ru,
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in
South Africa (South African Astronomical observatory) was pointed to the
GRB180715A (Ukwatta et al., GCN Circ #22947) 495 sec after trigger time at
2018-07-15 18:15:20 UT . On our first (100s exposure) set we do not
found optical transients within Swift error-box (ra=235.069 dec=-0.925
r=0.05) brighter then 20.8.
The observations made on zenit distance = 57.43 degrees, galaxy latitude b
= 40.1 degree.
The moon (10 % bright part) is 6.5 degrees above the horizon. The distance
between moon and object is 83
The sun altitude is -28.83 degree.
The object can be observed till 2018-07-15 22:48:22.
The visibility GRB error box (coord: 235.069 -0.925 error_box: 0.05) at
trigger time at different MASTER sites:
obj: 44.19 sun: -6.73 - Tavrida (Crimea, Russia)
obj: 36.94 sun: 23.52 - IAC, Teide (Tenerife,Spain)
obj: 57.43 sun: -28.83 - SAAO (Sutherland, SA)
obj: 43.89 sun: -11.87 - Kislovodsk (Russia)
obj: 27.30 sun: -7.55 - Ural (Kourovka, Russia)
obj: 9.49 sun: -15.74 - Tunka (near Baykal Lake, Russia)
obj: -5.64 sun: -10.73 - Amur(Blagoveschensk)
obj: -7.22 sun: 32.97 - OAFA (Argentina)
The message may be cited.