TITLE:   GCN CIRCULAR
NUMBER:  21749
SUBJECT: LIGO/Virgo G299232/PGWB170825.55: early MASTER observations of the Swift UVOT source position
DATE:    17/08/29 13:17:59 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov2007@gmail.com>

V.M.Lipunov, E. Gorbovskoy, V.G.Kornilov, N.Tyurina, V.Shumkov, D.Kuvshinov, 
P.Balanutsa,  O.Gress, A.Kuznetsov, M.I.Panchenko, A.V.Krylov, I.Gorbunov
Lomonosov Moscow State University, Sternberg Astronomical Institute

R. Rebolo, M. Serra-Ricart, G. Israelian, N.Lodiu
The Instituto de Astrofisica de Canarias

V.Yurkov, Yu.Sergienko, A.Gabovich
Blagoveschensk Educational State University, Blagoveschensk

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

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

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, M.Kotze,
South African Astronomical Observatory

We observed field with Swift/UVOT Optical Transient (LVG GCN 21733) 
~ 1 day before its detection. No OT detected brighter 19.1.


    Date       UT       Tstart -Ttrig   Exp        Type          Limit

  2017-08-26 05:13:29     0.708 day     180 	  Inspect 	19.1


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