[vsnet-grb-info 20130] GRB 171205A: MASTER-Net OT recent photometry

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  22226
SUBJECT: GRB 171205A: MASTER-Net OT recent photometry 
DATE:    17/12/10 17:15:00 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

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 Global Robotic Net (http://observ.pereplet.ru) observes Swift GRB 
171205A (D'Elia et al., GCN 22177) every night at
MASTER-Kislovodsk, MASTER-IAC, MASTER-SAAO .

The optical counterpart (Izzo et al. GCN 22180; Emery et al. GCN 22181; 
Butler et al.GCN 22182; Mao et al. GCN 22186; Choi et al. GCN 22188; 
Melandri et al.GCN 22189; Steeghs et al. GCN 22190; Cobb et al. GCN 22192; 
Volnova et

al. GCN 22193; Guidorzi et al. GCN 22197; Schmidl et al. GCN 22198; 
Lipunov et al. GCN 22199;  Postigo et al. GCN 22204)

preliminary photometry of last nights is the following

    Date          UT        Filter            OT

2017-12-09 00:40:04.45    B            18.6+-0.2
2017-12-09 01:41:23.53    B            18.5+-0.2
2017-12-10 04:42:29.82    B            18.2+-0.2
2017-12-10 05:50:48.67    V            17.20+-0.20
2017-12-10 06:11:24.21    B            17.80+-0.24
2017-12-10 06:22:41.40    B            17.68+-0.16
2017-12-10 06:22:41.40    B            17.32+-0.19

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