[vsnet-grb-info 16796] GRB 150724B: MASTER upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18077
SUBJECT: GRB 150724B: MASTER upper limit
DATE:    15/07/27 20:06:01 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

K.Ivanov, O.Gres, N.M.Budnev, S.Yazev,
Irkutsk State University

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

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

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)

Claudio Mallamaci, Carlos Lopez and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)



MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Tunka was pointed to the  GRB150724B (Bissaldi et al. GCN 
18065) 9244 sec after notice time and 78080 sec after trigger time
at 2015-07-25 16:26:57 UT.
We do not see any OT brighter than 20.3 inside Fermi LAT error box and at 
Swift XRT transient position (Osborne et al., GCN 18069).
All magnitudes are unfiltered (0.2B+0.8R) with respect to number USNO B 
stars).

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