[vsnet-grb-info 20987] GRB 180805B: MASTER optical late inspection short GRB with extended emission

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  23085
SUBJECT: GRB 180805B: MASTER optical late inspection short GRB with extended emission
DATE:    18/08/06 10:52:37 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, N.Tiurina, E. Gorbovskoy,
V.Kornilov, A.Kuznetsov, V.Chazov, I.  Gorbunov,
D.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov, D. Vlasenko
Lomonosov Moscow State University,SAI

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)

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)


MASTER-SAAO  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in SAAO was starting survey on the Swift short GRB with extended 
emission  GRB180805B (D'Avanzo et 
al., GCN #23076; Hamburg et al., GCN #23078;Sakamoto et al., GCN #23082) 
error-box 
(Evans et al., GCN #23077; )  37838 sec after notice time and 38322 
sec after trigger time at 2018-08-05 23:46:00 UT. The 5-sigma upper limit 
on our first (180s exposure)  set is about 20.5 mag

There is no OT detected.

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