GCN Circular 22273
Subject
GRB 171222A: MASTER-Net OT observations
Date
2017-12-23T11:26:55Z (7 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
N.Tyurina, V. Lipunov, E. Gorbovskoy,V.Kornilov, 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
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
O.Gres, K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk,
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
MASTER-IAC robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in IAC (Tenerife) was pointed to the Swift GRB171222A (Racusin et
al., GCN #22265;) 47159 seconds (~ 13h )
after trigger time at 2017-12-23 05:31:03 UT.
The 5-sigma upper limit has been about 19.3 at single (180 s) and 20.9 at
coadd (10x180 = 1800 s ) images.
We see OT detected by (Perley et al., GCN #22269; de Ugarte Postigo et
al., GCN #22272 ) at X-ray position (Osborne et al., GCN #22266; D'Elia
et al., GCN #22271).
The OT unfiltered magnitude is about ~ 21.
The observations made on zenit distance = 11 degrees, galaxy latitude b =
52 degree.
The moon (21 % bright part) below the horizon (The altitude of the Moon is
-73 degree ).
The sun altitude is -30.5 degree.
The object can be observed till sunrise at 2017-12-23 07:54:43 .
This message can be cited.